TY  - JOUR
AU  - Robbemont, Jody
AU  - van Veldhuijzen, Sam
AU  - Allain, Steven J.R.
AU  - Ambu, Johanna
AU  - Boyle, Ryan
AU  - Canestrelli, Daniele
AU  - Cathasaigh, Éinne Ó
AU  - Cathrine, Chris
AU  - Chiocchio, Andrea
AU  - Cogalniceanu, Dan
AU  - Cvijanović, Milena
AU  - Dufresnes, Christophe
AU  - Ennis, Collie
AU  - Gandola, Rob
AU  - Jablonski, Daniel
AU  - Julian, Angela
AU  - Kranželić, Daria
AU  - Lukanov, Simeon
AU  - Martínez-Solano, Iñigo
AU  - Montgomery, Ryan
AU  - Naumov, Borislav
AU  - O’Neill, Matthew
AU  - North, Alexandra
AU  - Pabijan, Maciej
AU  - Pushendorf, Robert
AU  - Salvi, Daniele
AU  - Schmidt, Bruno
AU  - Sotiropoulos, Konstantinos
AU  - Stanescu, Florina
AU  - Stanković, David
AU  - Stapleton, Sarah
AU  - Šunje, Emina
AU  - Szabolcs, Márton
AU  - Vacheva, Emiliya
AU  - Willis, David
AU  - Zimić, Adnan
AU  - France, James
AU  - Meilink, Willem R.M.
AU  - Stark, Tariq
AU  - Struijk, Richard P.J.H.
AU  - Theodoropoulos, Anagnostis
AU  - de Visser, Manon C.
AU  - Wielstra, Ben
PY  - 2023
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/6052
AB  - Many herpetofauna species have been introduced outside of their native range. MtDNA barcoding is regularly used to determine the provenance of such populations. The alpine newt has been introduced across the Netherlands, the United Kingdom and Ireland. However, geographical mtDNA structure across the natural range of the alpine newt is still incompletely understood and certain regions are severely undersampled. We collect mtDNA sequence data of over seven hundred individuals, from both the native and the introduced range. The main new insights from our extended mtDNA phylogeography are that 1) haplotypes from Spain do not form a reciprocally monophyletic clade, but are nested inside the mtDNA clade that covers western and eastern Europe; and 2) haplotypes from the northwest Balkans form a monophyletic clade together with those from the Southern Carpathians and Apuseni Mountains. We also home in on the regions where the distinct mtDNA clades meet in nature. We show that four out of the seven distinct mtDNA clades that comprise the alpine newt are implicated in the introductions in the Netherlands, United Kingdom and Ireland. In several introduced localities, two distinct mtDNA clades co-occur. As these mtDNA clades presumably represent cryptic species, we urge that the extent of genetic admixture between them is assessed from genome-wide nuclear DNA markers. We mobilized a large number of citizen scientists in this project to support the collection of DNA samples by skin swabbing and underscore the effectiveness of this sampling technique for mtDNA barcoding.
PB  - Brill Academic Publishers
T2  - Amphibia-Reptilia
T1  - An extended mtDNA phylogeography for the alpine newt illuminates the provenance of introduced populations
IS  - 3
VL  - 44
DO  - 10.1163/15685381-bja10144
SP  - 347
EP  - 361
ER  - 

@article{
author = "Robbemont, Jody and van Veldhuijzen, Sam and Allain, Steven J.R. and Ambu, Johanna and Boyle, Ryan and Canestrelli, Daniele and Cathasaigh, Éinne Ó and Cathrine, Chris and Chiocchio, Andrea and Cogalniceanu, Dan and Cvijanović, Milena and Dufresnes, Christophe and Ennis, Collie and Gandola, Rob and Jablonski, Daniel and Julian, Angela and Kranželić, Daria and Lukanov, Simeon and Martínez-Solano, Iñigo and Montgomery, Ryan and Naumov, Borislav and O’Neill, Matthew and North, Alexandra and Pabijan, Maciej and Pushendorf, Robert and Salvi, Daniele and Schmidt, Bruno and Sotiropoulos, Konstantinos and Stanescu, Florina and Stanković, David and Stapleton, Sarah and Šunje, Emina and Szabolcs, Márton and Vacheva, Emiliya and Willis, David and Zimić, Adnan and France, James and Meilink, Willem R.M. and Stark, Tariq and Struijk, Richard P.J.H. and Theodoropoulos, Anagnostis and de Visser, Manon C. and Wielstra, Ben",
year = "2023",
abstract = "Many herpetofauna species have been introduced outside of their native range. MtDNA barcoding is regularly used to determine the provenance of such populations. The alpine newt has been introduced across the Netherlands, the United Kingdom and Ireland. However, geographical mtDNA structure across the natural range of the alpine newt is still incompletely understood and certain regions are severely undersampled. We collect mtDNA sequence data of over seven hundred individuals, from both the native and the introduced range. The main new insights from our extended mtDNA phylogeography are that 1) haplotypes from Spain do not form a reciprocally monophyletic clade, but are nested inside the mtDNA clade that covers western and eastern Europe; and 2) haplotypes from the northwest Balkans form a monophyletic clade together with those from the Southern Carpathians and Apuseni Mountains. We also home in on the regions where the distinct mtDNA clades meet in nature. We show that four out of the seven distinct mtDNA clades that comprise the alpine newt are implicated in the introductions in the Netherlands, United Kingdom and Ireland. In several introduced localities, two distinct mtDNA clades co-occur. As these mtDNA clades presumably represent cryptic species, we urge that the extent of genetic admixture between them is assessed from genome-wide nuclear DNA markers. We mobilized a large number of citizen scientists in this project to support the collection of DNA samples by skin swabbing and underscore the effectiveness of this sampling technique for mtDNA barcoding.",
publisher = "Brill Academic Publishers",
journal = "Amphibia-Reptilia",
title = "An extended mtDNA phylogeography for the alpine newt illuminates the provenance of introduced populations",
number = "3",
volume = "44",
doi = "10.1163/15685381-bja10144",
pages = "347-361"
}

Robbemont, J., van Veldhuijzen, S., Allain, S. J.R., Ambu, J., Boyle, R., Canestrelli, D., Cathasaigh, É. Ó., Cathrine, C., Chiocchio, A., Cogalniceanu, D., Cvijanović, M., Dufresnes, C., Ennis, C., Gandola, R., Jablonski, D., Julian, A., Kranželić, D., Lukanov, S., Martínez-Solano, I., Montgomery, R., Naumov, B., O’Neill, M., North, A., Pabijan, M., Pushendorf, R., Salvi, D., Schmidt, B., Sotiropoulos, K., Stanescu, F., Stanković, D., Stapleton, S., Šunje, E., Szabolcs, M., Vacheva, E., Willis, D., Zimić, A., France, J., Meilink, W. R.M., Stark, T., Struijk, R. P.J.H., Theodoropoulos, A., de Visser, M. C.,& Wielstra, B.. (2023). An extended mtDNA phylogeography for the alpine newt illuminates the provenance of introduced populations. in Amphibia-Reptilia
Brill Academic Publishers., 44(3), 347-361.
https://doi.org/10.1163/15685381-bja10144

Robbemont J, van Veldhuijzen S, Allain SJ, Ambu J, Boyle R, Canestrelli D, Cathasaigh ÉÓ, Cathrine C, Chiocchio A, Cogalniceanu D, Cvijanović M, Dufresnes C, Ennis C, Gandola R, Jablonski D, Julian A, Kranželić D, Lukanov S, Martínez-Solano I, Montgomery R, Naumov B, O’Neill M, North A, Pabijan M, Pushendorf R, Salvi D, Schmidt B, Sotiropoulos K, Stanescu F, Stanković D, Stapleton S, Šunje E, Szabolcs M, Vacheva E, Willis D, Zimić A, France J, Meilink WR, Stark T, Struijk RP, Theodoropoulos A, de Visser MC, Wielstra B. An extended mtDNA phylogeography for the alpine newt illuminates the provenance of introduced populations. in Amphibia-Reptilia. 2023;44(3):347-361.
doi:10.1163/15685381-bja10144 .

Robbemont, Jody, van Veldhuijzen, Sam, Allain, Steven J.R., Ambu, Johanna, Boyle, Ryan, Canestrelli, Daniele, Cathasaigh, Éinne Ó, Cathrine, Chris, Chiocchio, Andrea, Cogalniceanu, Dan, Cvijanović, Milena, Dufresnes, Christophe, Ennis, Collie, Gandola, Rob, Jablonski, Daniel, Julian, Angela, Kranželić, Daria, Lukanov, Simeon, Martínez-Solano, Iñigo, Montgomery, Ryan, Naumov, Borislav, O’Neill, Matthew, North, Alexandra, Pabijan, Maciej, Pushendorf, Robert, Salvi, Daniele, Schmidt, Bruno, Sotiropoulos, Konstantinos, Stanescu, Florina, Stanković, David, Stapleton, Sarah, Šunje, Emina, Szabolcs, Márton, Vacheva, Emiliya, Willis, David, Zimić, Adnan, France, James, Meilink, Willem R.M., Stark, Tariq, Struijk, Richard P.J.H., Theodoropoulos, Anagnostis, de Visser, Manon C., Wielstra, Ben, "An extended mtDNA phylogeography for the alpine newt illuminates the provenance of introduced populations" in Amphibia-Reptilia, 44, no. 3 (2023):347-361,
https://doi.org/10.1163/15685381-bja10144 . .

TY  - CONF
AU  - Vučić, Tijana
AU  - Ivanović, Ana
AU  - Cvijanović, Milena
AU  - Wielstra, Ben
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5588
AB  - Large-bodied newts (Triturus sp.) represent a good model system for evo-devo studies. Females lay relatively large eggs, which are protected by transparent jelly layer, enabling easily observation of external anatomical features throughout embryonic development – from fertilized egg to fully formed larvae. MicroCT scanning aids another, more in depth insight into the development. Virtual cross sections enable visualization of internal anatomy, while volume renderings and reconstructions of 3D models enable exploration of development of internal organs and external morphology. Throughout Triturus embryonic development, homozygous embryos die due to a balanced lethal system known as chromosome 1 syndrome, which involves two non-recombining types of chromosome 1 (1A and 1B). It is hypothesized that the two potential homozygous genotypes (1A1A and 1B1B) arrest at different embryonic stages and express different phenotypes. Hence, knowledge of the embryo’s genotype is crucial for understanding normal embryonic development of heterozygous embryos and malformations which lead to lethality in homozygous embryos. In a pilot project, we tested and optimized a protocol for Triturus embryo scanning which allowed exploration of external and internal morphology while preserving the DNA. Our protocol provides an opportunity to further explore embryonic development in Triturus in diverse research lines: 1) normal embryonic development as a base line for further studies; 2) arrested development to uncover the basis of lethality; and 3) testing various evo-devo hypotheses.
PB  - Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade
C3  - Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
T1  - Insights from the inside: 3D embryonic development of Triturus newts
SP  - 40
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5588
ER  - 

@conference{
author = "Vučić, Tijana and Ivanović, Ana and Cvijanović, Milena and Wielstra, Ben",
year = "2022",
abstract = "Large-bodied newts (Triturus sp.) represent a good model system for evo-devo studies. Females lay relatively large eggs, which are protected by transparent jelly layer, enabling easily observation of external anatomical features throughout embryonic development – from fertilized egg to fully formed larvae. MicroCT scanning aids another, more in depth insight into the development. Virtual cross sections enable visualization of internal anatomy, while volume renderings and reconstructions of 3D models enable exploration of development of internal organs and external morphology. Throughout Triturus embryonic development, homozygous embryos die due to a balanced lethal system known as chromosome 1 syndrome, which involves two non-recombining types of chromosome 1 (1A and 1B). It is hypothesized that the two potential homozygous genotypes (1A1A and 1B1B) arrest at different embryonic stages and express different phenotypes. Hence, knowledge of the embryo’s genotype is crucial for understanding normal embryonic development of heterozygous embryos and malformations which lead to lethality in homozygous embryos. In a pilot project, we tested and optimized a protocol for Triturus embryo scanning which allowed exploration of external and internal morphology while preserving the DNA. Our protocol provides an opportunity to further explore embryonic development in Triturus in diverse research lines: 1) normal embryonic development as a base line for further studies; 2) arrested development to uncover the basis of lethality; and 3) testing various evo-devo hypotheses.",
publisher = "Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade",
journal = "Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia",
title = "Insights from the inside: 3D embryonic development of Triturus newts",
pages = "40",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5588"
}

Vučić, T., Ivanović, A., Cvijanović, M.,& Wielstra, B.. (2022). Insights from the inside: 3D embryonic development of Triturus newts. in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade., 40.
https://hdl.handle.net/21.15107/rcub_ibiss_5588

Vučić T, Ivanović A, Cvijanović M, Wielstra B. Insights from the inside: 3D embryonic development of Triturus newts. in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia. 2022;:40.
https://hdl.handle.net/21.15107/rcub_ibiss_5588 .

Vučić, Tijana, Ivanović, Ana, Cvijanović, Milena, Wielstra, Ben, "Insights from the inside: 3D embryonic development of Triturus newts" in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia (2022):40,
https://hdl.handle.net/21.15107/rcub_ibiss_5588 .

TY  - CONF
AU  - Bugarčić, Marko
AU  - Ivanović, Ana
AU  - Cvijanović, Milena
AU  - Ajduković, Maja
AU  - Wielstra, Ben
AU  - Vučić, Tijana
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5228
AB  - In developmental biology a plethora of studies support the existence of a
conserved stage during the ontogeny of vertebrates – the pharyngula. The
developmental hourglass model predicts that the most conserved morphological
pattern occurs in the middle of embryonic development. We explored external
morphology of the craniofacial region of Triturus newts using 3D geometric
morphometrics. The craniofacial region was selected because it experiences
pleiotropic developmental constrains due to its major role in feeding, respiration and
the housing of substantial parts of nervous and sensory systems. We aimed to uncover
differences in variance between successive developmental stages, because it is
proposed that the more constrained stages should have the lowest variance. In
addition, we explored differences in the craniofacial shape between successive
developmental stages. Stages included start from the moment after the completion of
neurulation and span the mid-tailbud phase. The least amount of variance in shape was
recorded at stage 24 (according to D’Amen and colleagues). In general, this stage is
characterized by changes in overall head shape, the distinction of optical vesicles,
intensive somitogenesis and formation of the tailbud which overgrows the blastopore,
indicating that these processes could be highly constrained. Only significant
craniofacial shape change occurred between this and successive stage. The most
pronounced differences were due to growing of the head region and gill bud balancers.
Optic vesicles became concave due to inductive processes preceding eye formation.
These preliminary results indicate that stage 24 could be the most conserved one
during early ontogeny as it is preceded and followed by stages exhibiting more
variance in shape. Our results indicate that the craniofacial development represents a
suitable model system for testing the hourglass model of development. Larger sample
size, exploration of the entire embryonic development and ontogeny of additional newt
species is needed to confirm our preliminary findings.
PB  - Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade
C3  - Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
T1  - Craniofacial development of Triturus newts – a suitable model system for  testing the developmental hourglass model
SP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5228
ER  - 

@conference{
author = "Bugarčić, Marko and Ivanović, Ana and Cvijanović, Milena and Ajduković, Maja and Wielstra, Ben and Vučić, Tijana",
year = "2022",
abstract = "In developmental biology a plethora of studies support the existence of a
conserved stage during the ontogeny of vertebrates – the pharyngula. The
developmental hourglass model predicts that the most conserved morphological
pattern occurs in the middle of embryonic development. We explored external
morphology of the craniofacial region of Triturus newts using 3D geometric
morphometrics. The craniofacial region was selected because it experiences
pleiotropic developmental constrains due to its major role in feeding, respiration and
the housing of substantial parts of nervous and sensory systems. We aimed to uncover
differences in variance between successive developmental stages, because it is
proposed that the more constrained stages should have the lowest variance. In
addition, we explored differences in the craniofacial shape between successive
developmental stages. Stages included start from the moment after the completion of
neurulation and span the mid-tailbud phase. The least amount of variance in shape was
recorded at stage 24 (according to D’Amen and colleagues). In general, this stage is
characterized by changes in overall head shape, the distinction of optical vesicles,
intensive somitogenesis and formation of the tailbud which overgrows the blastopore,
indicating that these processes could be highly constrained. Only significant
craniofacial shape change occurred between this and successive stage. The most
pronounced differences were due to growing of the head region and gill bud balancers.
Optic vesicles became concave due to inductive processes preceding eye formation.
These preliminary results indicate that stage 24 could be the most conserved one
during early ontogeny as it is preceded and followed by stages exhibiting more
variance in shape. Our results indicate that the craniofacial development represents a
suitable model system for testing the hourglass model of development. Larger sample
size, exploration of the entire embryonic development and ontogeny of additional newt
species is needed to confirm our preliminary findings.",
publisher = "Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade",
journal = "Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia",
title = "Craniofacial development of Triturus newts – a suitable model system for  testing the developmental hourglass model",
pages = "42",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5228"
}

Bugarčić, M., Ivanović, A., Cvijanović, M., Ajduković, M., Wielstra, B.,& Vučić, T.. (2022). Craniofacial development of Triturus newts – a suitable model system for  testing the developmental hourglass model. in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia
Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade., 42.
https://hdl.handle.net/21.15107/rcub_ibiss_5228

Bugarčić M, Ivanović A, Cvijanović M, Ajduković M, Wielstra B, Vučić T. Craniofacial development of Triturus newts – a suitable model system for  testing the developmental hourglass model. in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia. 2022;:42.
https://hdl.handle.net/21.15107/rcub_ibiss_5228 .

Bugarčić, Marko, Ivanović, Ana, Cvijanović, Milena, Ajduković, Maja, Wielstra, Ben, Vučić, Tijana, "Craniofacial development of Triturus newts – a suitable model system for  testing the developmental hourglass model" in Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia (2022):42,
https://hdl.handle.net/21.15107/rcub_ibiss_5228 .

TY  - JOUR
AU  - Dufresnes, Christophe
AU  - Strachinis, Ilias
AU  - Suriadna, Nataliia
AU  - Mykytynets, Galyna
AU  - Cogălniceanu, Dan
AU  - Székely, Paul
AU  - Vukov, Tanja
AU  - Arntzen, Jan W.
AU  - Wielstra, Ben
AU  - Lymberakis, Petros
AU  - Geffen, Eli
AU  - Gafny, Sarig
AU  - Kumlutaş, Yusuf
AU  - Ilgaz, Çetin
AU  - Candan, Kamil
AU  - Mizsei, Edvárd
AU  - Szabolcs, Márton
AU  - Kolenda, Krzysztof
AU  - Smirnov, Nazar
AU  - Géniez, Philippe
AU  - Lukanov, Simeon
AU  - Crochet, Pierre-André
AU  - Dubey, Sylvain
AU  - Perrin, Nicolas
AU  - Litvinchuk, Spartak N.
AU  - Denoël, Mathieu
PY  - 2019
UR  - http://doi.wiley.com/10.1111/mec.15133
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3412
AB  - Cryptic phylogeographic diversifications provide unique models to examine the role of phylogenetic divergence on the evolution of reproductive isolation, without extrinsic factors such as ecological and behavioural differentiation. Yet, to date very few comparative studies have been attempted within such radiations. Here, we characterize a new speciation continuum in a group of widespread Eurasian amphibians, the Pelobates spadefoot toads, by conducting multilocus (restriction site associated DNA sequencing and mitochondrial DNA) phylogenetic, phylogeographic and hybrid zone analyses. Within the P. syriacus complex, we discovered species-level cryptic divergences (>5 million years ago [My]) between populations distributed in the Near-East (hereafter P. syriacus sensu stricto [s.s.]) and southeastern Europe (hereafter P. balcanicus), each featuring deep intraspecific lineages. Altogether, we could scale hybridizability to divergence time along six different stages, spanning from sympatry without gene flow (P. fuscus and P. balcanicus, >10 My), parapatry with highly restricted hybridization (P. balcanicus and P. syriacus s.s., >5 My), narrow hybrid zones (~15 km) consistent with partial reproductive isolation (P. fuscus and P. vespertinus, ~3 My), to extensive admixture between Pleistocene and refugial lineages (≤2 My). This full spectrum empirically supports a gradual build up of reproductive barriers through time, reversible up until a threshold that we estimate at ~3 My. Hence, cryptic phylogeographic lineages may fade away or become reproductively isolated species simply depending on the time they persist in allopatry, and without definite ecomorphological divergence.
T2  - Molecular Ecology
T1  - Phylogeography of a cryptic speciation continuum in Eurasian spadefoot toads (Pelobates).
DO  - 10.1111/mec.15133
ER  - 

@article{
author = "Dufresnes, Christophe and Strachinis, Ilias and Suriadna, Nataliia and Mykytynets, Galyna and Cogălniceanu, Dan and Székely, Paul and Vukov, Tanja and Arntzen, Jan W. and Wielstra, Ben and Lymberakis, Petros and Geffen, Eli and Gafny, Sarig and Kumlutaş, Yusuf and Ilgaz, Çetin and Candan, Kamil and Mizsei, Edvárd and Szabolcs, Márton and Kolenda, Krzysztof and Smirnov, Nazar and Géniez, Philippe and Lukanov, Simeon and Crochet, Pierre-André and Dubey, Sylvain and Perrin, Nicolas and Litvinchuk, Spartak N. and Denoël, Mathieu",
year = "2019",
abstract = "Cryptic phylogeographic diversifications provide unique models to examine the role of phylogenetic divergence on the evolution of reproductive isolation, without extrinsic factors such as ecological and behavioural differentiation. Yet, to date very few comparative studies have been attempted within such radiations. Here, we characterize a new speciation continuum in a group of widespread Eurasian amphibians, the Pelobates spadefoot toads, by conducting multilocus (restriction site associated DNA sequencing and mitochondrial DNA) phylogenetic, phylogeographic and hybrid zone analyses. Within the P. syriacus complex, we discovered species-level cryptic divergences (>5 million years ago [My]) between populations distributed in the Near-East (hereafter P. syriacus sensu stricto [s.s.]) and southeastern Europe (hereafter P. balcanicus), each featuring deep intraspecific lineages. Altogether, we could scale hybridizability to divergence time along six different stages, spanning from sympatry without gene flow (P. fuscus and P. balcanicus, >10 My), parapatry with highly restricted hybridization (P. balcanicus and P. syriacus s.s., >5 My), narrow hybrid zones (~15 km) consistent with partial reproductive isolation (P. fuscus and P. vespertinus, ~3 My), to extensive admixture between Pleistocene and refugial lineages (≤2 My). This full spectrum empirically supports a gradual build up of reproductive barriers through time, reversible up until a threshold that we estimate at ~3 My. Hence, cryptic phylogeographic lineages may fade away or become reproductively isolated species simply depending on the time they persist in allopatry, and without definite ecomorphological divergence.",
journal = "Molecular Ecology",
title = "Phylogeography of a cryptic speciation continuum in Eurasian spadefoot toads (Pelobates).",
doi = "10.1111/mec.15133"
}

Dufresnes, C., Strachinis, I., Suriadna, N., Mykytynets, G., Cogălniceanu, D., Székely, P., Vukov, T., Arntzen, J. W., Wielstra, B., Lymberakis, P., Geffen, E., Gafny, S., Kumlutaş, Y., Ilgaz, Ç., Candan, K., Mizsei, E., Szabolcs, M., Kolenda, K., Smirnov, N., Géniez, P., Lukanov, S., Crochet, P., Dubey, S., Perrin, N., Litvinchuk, S. N.,& Denoël, M.. (2019). Phylogeography of a cryptic speciation continuum in Eurasian spadefoot toads (Pelobates).. in Molecular Ecology.
https://doi.org/10.1111/mec.15133

Dufresnes C, Strachinis I, Suriadna N, Mykytynets G, Cogălniceanu D, Székely P, Vukov T, Arntzen JW, Wielstra B, Lymberakis P, Geffen E, Gafny S, Kumlutaş Y, Ilgaz Ç, Candan K, Mizsei E, Szabolcs M, Kolenda K, Smirnov N, Géniez P, Lukanov S, Crochet P, Dubey S, Perrin N, Litvinchuk SN, Denoël M. Phylogeography of a cryptic speciation continuum in Eurasian spadefoot toads (Pelobates).. in Molecular Ecology. 2019;.
doi:10.1111/mec.15133 .

Dufresnes, Christophe, Strachinis, Ilias, Suriadna, Nataliia, Mykytynets, Galyna, Cogălniceanu, Dan, Székely, Paul, Vukov, Tanja, Arntzen, Jan W., Wielstra, Ben, Lymberakis, Petros, Geffen, Eli, Gafny, Sarig, Kumlutaş, Yusuf, Ilgaz, Çetin, Candan, Kamil, Mizsei, Edvárd, Szabolcs, Márton, Kolenda, Krzysztof, Smirnov, Nazar, Géniez, Philippe, Lukanov, Simeon, Crochet, Pierre-André, Dubey, Sylvain, Perrin, Nicolas, Litvinchuk, Spartak N., Denoël, Mathieu, "Phylogeography of a cryptic speciation continuum in Eurasian spadefoot toads (Pelobates)." in Molecular Ecology (2019),
https://doi.org/10.1111/mec.15133 . .

TY  - JOUR
AU  - Arntzen, Jan W.
AU  - Üzüm, Nazan
AU  - Ajduković, Maja
AU  - Ivanović, Ana
AU  - Wielstra, Ben
PY  - 2018
UR  - https://peerj.com/articles/5317
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3120
AB  - Relationships between phylogenetic relatedness, hybrid zone spatial structure, the amount of interspecific gene flow and population demography were investigated, with the newt genus Triturus as a model system. In earlier work, a bimodal hybrid zone of two distantly related species combined low interspecific gene flow with hybrid sterility and heterosis was documented. Apart from that, a suite of unimodal hybrid zones in closely related Triturus showed more or less extensive introgressive hybridization with no evidence for heterosis. We here report on population demography and interspecific gene flow in two Triturus species ( T. macedonicus and T. ivanbureschi in Serbia). These are two that are moderately related, engage in a heterogeneous uni-/bimodal hybrid zone and hence represent an intermediate situation. This study used 13 diagnostic nuclear genetic markers in a population at the species contact zone. This showed that all individuals were hybrids, with no parentals detected. Age, size and longevity and the estimated growth curves are not exceeding that of the parental species, so that we conclude the absence of heterosis in T. macedonicus – T. ivanbureschi . Observations across the genus support the hypothesis that fertile hybrids allocate resources to reproduction and infertile hybrids allocate resources to growth. Several Triturus species hybrid zones not yet studied allow the testing of this hypothesis.
T2  - PeerJ
T1  - Absence of heterosis in hybrid crested newts
VL  - 6
DO  - 10.7717/peerj.5317
SP  - e5317
ER  - 

@article{
author = "Arntzen, Jan W. and Üzüm, Nazan and Ajduković, Maja and Ivanović, Ana and Wielstra, Ben",
year = "2018",
abstract = "Relationships between phylogenetic relatedness, hybrid zone spatial structure, the amount of interspecific gene flow and population demography were investigated, with the newt genus Triturus as a model system. In earlier work, a bimodal hybrid zone of two distantly related species combined low interspecific gene flow with hybrid sterility and heterosis was documented. Apart from that, a suite of unimodal hybrid zones in closely related Triturus showed more or less extensive introgressive hybridization with no evidence for heterosis. We here report on population demography and interspecific gene flow in two Triturus species ( T. macedonicus and T. ivanbureschi in Serbia). These are two that are moderately related, engage in a heterogeneous uni-/bimodal hybrid zone and hence represent an intermediate situation. This study used 13 diagnostic nuclear genetic markers in a population at the species contact zone. This showed that all individuals were hybrids, with no parentals detected. Age, size and longevity and the estimated growth curves are not exceeding that of the parental species, so that we conclude the absence of heterosis in T. macedonicus – T. ivanbureschi . Observations across the genus support the hypothesis that fertile hybrids allocate resources to reproduction and infertile hybrids allocate resources to growth. Several Triturus species hybrid zones not yet studied allow the testing of this hypothesis.",
journal = "PeerJ",
title = "Absence of heterosis in hybrid crested newts",
volume = "6",
doi = "10.7717/peerj.5317",
pages = "e5317"
}

Arntzen, J. W., Üzüm, N., Ajduković, M., Ivanović, A.,& Wielstra, B.. (2018). Absence of heterosis in hybrid crested newts. in PeerJ, 6, e5317.
https://doi.org/10.7717/peerj.5317

Arntzen JW, Üzüm N, Ajduković M, Ivanović A, Wielstra B. Absence of heterosis in hybrid crested newts. in PeerJ. 2018;6:e5317.
doi:10.7717/peerj.5317 .

Arntzen, Jan W., Üzüm, Nazan, Ajduković, Maja, Ivanović, Ana, Wielstra, Ben, "Absence of heterosis in hybrid crested newts" in PeerJ, 6 (2018):e5317,
https://doi.org/10.7717/peerj.5317 . .

TY  - JOUR
AU  - Wielstra, Ben
AU  - Canestrelli, Daniele
AU  - Cvijanović, Milena
AU  - Denoël, Mathieu
AU  - Fijarczyk, Anna
AU  - Jablonski, Daniel
AU  - Liana, Marcin
AU  - Naumov, Borislav
AU  - Olgun, Kurtuluş
AU  - Pabijan, Maciej
AU  - Pezzarossa, Alice
AU  - Popgeorgiev, Georgi
AU  - Salvi, Daniele
AU  - Si, Yali
AU  - Sillero, Neftalí
AU  - Sotiropoulos, Konstantinos
AU  - Zieliński, Piotr
AU  - Babik, Wiesław
PY  - 2018
UR  - http://booksandjournals.brillonline.com/content/journals/10.1163/15685381-17000128
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/3041
AB  - The ‘smooth newt’, the taxon traditionally referred to as Lissotriton vulgaris, consists of multiple morphologically distinct taxa. Given the uncertainty concerning the validity and rank of these taxa, L. vulgaris sensu lato has often been treated as a single, polytypic species. A recent study, driven by genetic data, proposed to recognize five species, L. graecus, L. kosswigi, L. lantzi, L. schmidtleri and a more restricted L. vulgaris. The Carpathian newt L. montandoni was confirmed to be a closely related sister species. We propose to refer to this collective of six Lissotriton species as the smooth newt or Lissotriton vulgaris species complex. Guided by comprehensive genomic data from throughout the range of the smooth newt species complex we 1) delineate the distribution ranges, 2) provide a distribution database, and 3) produce distribution maps according to the format of the New Atlas of Amphibians and Reptiles of Europe, for the six constituent species. This allows us to 4) highlight regions where more research is needed to determine the position of contact zones.
T2  - Amphibia-Reptilia
T1  - The distributions of the six species constituting the smooth newt species complex (Lissotriton vulgaris sensu lato and L. montandoni) – an addition to the New Atlas of Amphibians and Reptiles of Europe
IS  - 2
VL  - 39
DO  - 10.1163/15685381-17000128
SP  - 252
EP  - 259
ER  - 

@article{
author = "Wielstra, Ben and Canestrelli, Daniele and Cvijanović, Milena and Denoël, Mathieu and Fijarczyk, Anna and Jablonski, Daniel and Liana, Marcin and Naumov, Borislav and Olgun, Kurtuluş and Pabijan, Maciej and Pezzarossa, Alice and Popgeorgiev, Georgi and Salvi, Daniele and Si, Yali and Sillero, Neftalí and Sotiropoulos, Konstantinos and Zieliński, Piotr and Babik, Wiesław",
year = "2018",
abstract = "The ‘smooth newt’, the taxon traditionally referred to as Lissotriton vulgaris, consists of multiple morphologically distinct taxa. Given the uncertainty concerning the validity and rank of these taxa, L. vulgaris sensu lato has often been treated as a single, polytypic species. A recent study, driven by genetic data, proposed to recognize five species, L. graecus, L. kosswigi, L. lantzi, L. schmidtleri and a more restricted L. vulgaris. The Carpathian newt L. montandoni was confirmed to be a closely related sister species. We propose to refer to this collective of six Lissotriton species as the smooth newt or Lissotriton vulgaris species complex. Guided by comprehensive genomic data from throughout the range of the smooth newt species complex we 1) delineate the distribution ranges, 2) provide a distribution database, and 3) produce distribution maps according to the format of the New Atlas of Amphibians and Reptiles of Europe, for the six constituent species. This allows us to 4) highlight regions where more research is needed to determine the position of contact zones.",
journal = "Amphibia-Reptilia",
title = "The distributions of the six species constituting the smooth newt species complex (Lissotriton vulgaris sensu lato and L. montandoni) – an addition to the New Atlas of Amphibians and Reptiles of Europe",
number = "2",
volume = "39",
doi = "10.1163/15685381-17000128",
pages = "252-259"
}

Wielstra, B., Canestrelli, D., Cvijanović, M., Denoël, M., Fijarczyk, A., Jablonski, D., Liana, M., Naumov, B., Olgun, K., Pabijan, M., Pezzarossa, A., Popgeorgiev, G., Salvi, D., Si, Y., Sillero, N., Sotiropoulos, K., Zieliński, P.,& Babik, W.. (2018). The distributions of the six species constituting the smooth newt species complex (Lissotriton vulgaris sensu lato and L. montandoni) – an addition to the New Atlas of Amphibians and Reptiles of Europe. in Amphibia-Reptilia, 39(2), 252-259.
https://doi.org/10.1163/15685381-17000128

Wielstra B, Canestrelli D, Cvijanović M, Denoël M, Fijarczyk A, Jablonski D, Liana M, Naumov B, Olgun K, Pabijan M, Pezzarossa A, Popgeorgiev G, Salvi D, Si Y, Sillero N, Sotiropoulos K, Zieliński P, Babik W. The distributions of the six species constituting the smooth newt species complex (Lissotriton vulgaris sensu lato and L. montandoni) – an addition to the New Atlas of Amphibians and Reptiles of Europe. in Amphibia-Reptilia. 2018;39(2):252-259.
doi:10.1163/15685381-17000128 .

Wielstra, Ben, Canestrelli, Daniele, Cvijanović, Milena, Denoël, Mathieu, Fijarczyk, Anna, Jablonski, Daniel, Liana, Marcin, Naumov, Borislav, Olgun, Kurtuluş, Pabijan, Maciej, Pezzarossa, Alice, Popgeorgiev, Georgi, Salvi, Daniele, Si, Yali, Sillero, Neftalí, Sotiropoulos, Konstantinos, Zieliński, Piotr, Babik, Wiesław, "The distributions of the six species constituting the smooth newt species complex (Lissotriton vulgaris sensu lato and L. montandoni) – an addition to the New Atlas of Amphibians and Reptiles of Europe" in Amphibia-Reptilia, 39, no. 2 (2018):252-259,
https://doi.org/10.1163/15685381-17000128 . .

TY  - JOUR
AU  - Vukov, Tanja
AU  - Cvijanović, Milena
AU  - Wielstra, Ben
AU  - Kalezić, Miloš L.
PY  - 2014
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/2137
AB  - Assessing the origin of trait variation during evolutionary history is
   an important first step in understanding evolutionary diversification.
   Here, we tested the influence of shared ancestry and climate, and the
   interplay of both, on the variation of ten life history traits in
   Triturus newts. We showed that (1) climate alone has driven the
   evolution of variation in live life history traits, (2) phylogenetic
   signal partly explains the variation in two traits (vitellus diameter
   and snout-vent length of larvae at metamorphosis), and (3) the interplay
   of shared ancestry and climate explains the variation in one trait
   (snout-vent length of larvae at metamorphosis). This study highlights
   the coarse-grained influence of shared ancestry and climate on the
   structure of phenotypic trait variation in Triturus and provides a
   handle for more detailed, fine grained studies on the evolution of
   phenotypic trait variation.
PB  - Helsinki: Finnish Zoological Botanical Publishing Board
T2  - Annales Zoologici Fennici
T1  - The roles of phylogeny and climate in shaping variation in life-history
 traits of the newt genus Triturus (Caudata, Salamandridae)
IS  - 5
VL  - 51
DO  - 10.5735/086.051.0505
SP  - 445
EP  - 456
ER  - 

@article{
author = "Vukov, Tanja and Cvijanović, Milena and Wielstra, Ben and Kalezić, Miloš L.",
year = "2014",
abstract = "Assessing the origin of trait variation during evolutionary history is
   an important first step in understanding evolutionary diversification.
   Here, we tested the influence of shared ancestry and climate, and the
   interplay of both, on the variation of ten life history traits in
   Triturus newts. We showed that (1) climate alone has driven the
   evolution of variation in live life history traits, (2) phylogenetic
   signal partly explains the variation in two traits (vitellus diameter
   and snout-vent length of larvae at metamorphosis), and (3) the interplay
   of shared ancestry and climate explains the variation in one trait
   (snout-vent length of larvae at metamorphosis). This study highlights
   the coarse-grained influence of shared ancestry and climate on the
   structure of phenotypic trait variation in Triturus and provides a
   handle for more detailed, fine grained studies on the evolution of
   phenotypic trait variation.",
publisher = "Helsinki: Finnish Zoological Botanical Publishing Board",
journal = "Annales Zoologici Fennici",
title = "The roles of phylogeny and climate in shaping variation in life-history
 traits of the newt genus Triturus (Caudata, Salamandridae)",
number = "5",
volume = "51",
doi = "10.5735/086.051.0505",
pages = "445-456"
}

Vukov, T., Cvijanović, M., Wielstra, B.,& Kalezić, M. L.. (2014). The roles of phylogeny and climate in shaping variation in life-history
 traits of the newt genus Triturus (Caudata, Salamandridae). in Annales Zoologici Fennici
Helsinki: Finnish Zoological Botanical Publishing Board., 51(5), 445-456.
https://doi.org/10.5735/086.051.0505

Vukov T, Cvijanović M, Wielstra B, Kalezić ML. The roles of phylogeny and climate in shaping variation in life-history
 traits of the newt genus Triturus (Caudata, Salamandridae). in Annales Zoologici Fennici. 2014;51(5):445-456.
doi:10.5735/086.051.0505 .

Vukov, Tanja, Cvijanović, Milena, Wielstra, Ben, Kalezić, Miloš L., "The roles of phylogeny and climate in shaping variation in life-history
 traits of the newt genus Triturus (Caudata, Salamandridae)" in Annales Zoologici Fennici, 51, no. 5 (2014):445-456,
https://doi.org/10.5735/086.051.0505 . .

TY  - JOUR
AU  - Vukov, Tanja
AU  - Sotiropoulos, Konstantinos
AU  - Wielstra, Ben
AU  - Džukić, Georg V.
AU  - Kalezić, Miloš L.
PY  - 2011
UR  - https://radar.ibiss.bg.ac.rs/handle/123456789/1251
AB  - We characterized the adult body form of the crested newt (Triturus cristatus superspecies) and explored its evolution. From seven morphometric traits, we determined that body size, interlimb distance and head width define the body form. None of the morphometric traits showed a phylogenetic signal. Three body-shape morphotypes (Triturus dobrogicus + T. cristatus, Triturus carnifex + Triturus macedonicus and Triturus karelinii + Triturus arntzeni) and three body-size morphotypes (T. dobrogicus, T. cristatus and all other crested newts) could be recognized. The ancestral phenotype (a large body with a short trunk and a wide head) characterized T. karelinii and T. arntzeni. Triturus carnifex and T. macedonicus had a somewhat different phenotype (large body and wide head, accompanied by mild body elongation). The most derived phenotype included body size reduction and more pronounced body elongation in T. cristatus and, especially, in T. dobrogicus. Body elongation occurred by trunk lengthening but not head and tail lengthening. Additionally, contrary to other tetrapods, evolutionary axis elongation in crested newts was followed by a decrease in body size. We advocate the hypothesis that ecology drives the evolution of body form in crested newts.
T2  - Journal of Zoological Systematics and Evolutionary Research
T1  - The evolution of the adult body form of the crested newt (Triturus cristatus superspecies, Caudata, Salamandridae)
IS  - 4
VL  - 49
EP  - 334
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_1251
ER  - 

@article{
author = "Vukov, Tanja and Sotiropoulos, Konstantinos and Wielstra, Ben and Džukić, Georg V. and Kalezić, Miloš L.",
year = "2011",
abstract = "We characterized the adult body form of the crested newt (Triturus cristatus superspecies) and explored its evolution. From seven morphometric traits, we determined that body size, interlimb distance and head width define the body form. None of the morphometric traits showed a phylogenetic signal. Three body-shape morphotypes (Triturus dobrogicus + T. cristatus, Triturus carnifex + Triturus macedonicus and Triturus karelinii + Triturus arntzeni) and three body-size morphotypes (T. dobrogicus, T. cristatus and all other crested newts) could be recognized. The ancestral phenotype (a large body with a short trunk and a wide head) characterized T. karelinii and T. arntzeni. Triturus carnifex and T. macedonicus had a somewhat different phenotype (large body and wide head, accompanied by mild body elongation). The most derived phenotype included body size reduction and more pronounced body elongation in T. cristatus and, especially, in T. dobrogicus. Body elongation occurred by trunk lengthening but not head and tail lengthening. Additionally, contrary to other tetrapods, evolutionary axis elongation in crested newts was followed by a decrease in body size. We advocate the hypothesis that ecology drives the evolution of body form in crested newts.",
journal = "Journal of Zoological Systematics and Evolutionary Research",
title = "The evolution of the adult body form of the crested newt (Triturus cristatus superspecies, Caudata, Salamandridae)",
number = "4",
volume = "49",
pages = "334",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_1251"
}

Vukov, T., Sotiropoulos, K., Wielstra, B., Džukić, G. V.,& Kalezić, M. L.. (2011). The evolution of the adult body form of the crested newt (Triturus cristatus superspecies, Caudata, Salamandridae). in Journal of Zoological Systematics and Evolutionary Research, 49(4).
https://hdl.handle.net/21.15107/rcub_ibiss_1251

Vukov T, Sotiropoulos K, Wielstra B, Džukić GV, Kalezić ML. The evolution of the adult body form of the crested newt (Triturus cristatus superspecies, Caudata, Salamandridae). in Journal of Zoological Systematics and Evolutionary Research. 2011;49(4):null-334.
https://hdl.handle.net/21.15107/rcub_ibiss_1251 .

Vukov, Tanja, Sotiropoulos, Konstantinos, Wielstra, Ben, Džukić, Georg V., Kalezić, Miloš L., "The evolution of the adult body form of the crested newt (Triturus cristatus superspecies, Caudata, Salamandridae)" in Journal of Zoological Systematics and Evolutionary Research, 49, no. 4 (2011),
https://hdl.handle.net/21.15107/rcub_ibiss_1251 .