Exploring the phylogenetic signal in the cranial variation of European populations of grayling (Actinopterygii, Salmonidae)
2023
Authors:
Jojić, VidaBajić, Aleksandar
Barišić Klisarić, Nataša
Bugarski-Stanojević, Vanja
Snoj, Aleš
Miljanović, Branko
Askeyev, Oleg
Askeyev, Igor
Marić, Saša
Document Type:
Article (Published version)
Metadata
Show full item recordAbstract:
This is a preliminary and exploratory study of cranial variation in European populations of grayling. We
investigated the correspondence between size/shape variation of the dorsal (dc), ventral (vc) and occipital
(oc) cranium and phylogenetic relationships (inferred from mitochondrial control region – mtDNA cr
and microsatellite dna data) of six grayling populations: three from Balkan phylogenetic clade and two
from Caspian phylogenetic clade of the European grayling Thymallus thymallus and one population of
the Adriatic grayling Thymallus aeliani, which until recently was considered the Adriatic phylogenetic
clade of T. thymallus. Significant size and shape differences were found between populations in all three
cranial views. However, significant size-related shape variation (allometry) was found for dc and vc, but
not for oc. The size variation of each cranial view does not contain phylogenetic signal, but size variation
of oc is consistent with genetic variation inferred from microsatellite dna. Regarding shape variation, a
significant phylogenetic signal was detected only for oc, and only the shape variation of oc is consistent
with the genetic variation inferred from the mtDNA cr. Moreover, the Adriatic grayling T. aeliani (Soča
population) was clearly separated from the three T. thymallus populations of the Balkan phylogenetic
clade and the two T. thymallus populations of the Caspian phylogenetic clade only at the level of oc. Thus,
our results suggest that different cranial regions differ in allometry, reflect phylo(genetic) relationships
differently, and exhibit differences in ecophenotypic plasticity, with oc seeming best suited to represent
the phylogenetic relationships of the grayling populations studied.
Keywords:
geometric morphometrics; microsatellite DNA; mtDNA CR; salmonids; Thymallus aeliani; Thymallus thymallusSource:
Contributions to Zoology, 2023, 92, 5, 510-532Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200125 (University of Novi Sad, Faculty of Science) (RS-MESTD-inst-2020-200125)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200007 (University of Belgrade, Institute for Biological Research 'Siniša Stanković') (RS-MESTD-inst-2020-200007)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200178 (University of Belgrade, Faculty of Biology) (RS-MESTD-inst-2020-200178)
DOI: 10.1163/18759866-bja10051
ISSN: 1383-4517