Oxidative cost of interspecific hybridization: a case study of two Triturus species and their hybrids.
2018
Аутори:
Prokić, MarkoDespotović, Svetlana
Vučić, Tijana
Petrović, Tamara
Gavrić, Jelena
Gavrilović, Branka
Radovanović, Tijana
Saičić, Zorica
Тип документа:
Чланак у часопису (Објављена верзија)
,
© 2018. Published by The Company of Biologists Ltd.
Метаподаци
Приказ свих података о документуАпстракт:
Oxidative stress has most recently been suggested as one of the possible mechanisms responsible for reduced fitness of hybrids. To explore possible oxidative cost of hybridization, we examined anti-oxidant defence system parameters (superoxide dismutase, catalase, glutathione peroxidase, glutathione S-transferase, glutathione reductase, glutathione, SH groups), their interconnectedness (index of integration) and levels of oxidative damage [concentrations of lipid peroxides, TBARS (thiobarbituric acid reactive substances)] in laboratory-reared newt species, Triturus macedonicus and T. ivanbureschi, and their hybrid. Our results showed that parental species differed in anti-oxidant defence system parameters, but not in the levels of integration of the whole system and oxidative damage. Individuals of T. ivanbureschi had higher activities of superoxide dismutase, glutathione S-transferase and concentrations of glutathione. Hybrid individuals of crested newts displayed higher levels of the anti-oxidant defence system (higher superoxide dismutase, catalase, glutathione peroxidase activities and concentrations of SH groups), and a lower overall correlation of anti-oxidant system (lower index of integration) in comparison with both parental species, suggesting that they may possess a less efficient anti-oxidant defence system and a higher investment in maintaining oxidative balance. The higher investment in the anti-oxidant system could divert limited resources away from other functions and affect further hybrid fitness. The presented findings contribute to a better understanding of the anti-oxidant defence system of crested newts and their interspecies differences, and support the hypothesis that oxidative stress is one of the costs of interspecific hybridization.
Кључне речи:
Anti-oxidative defence system; Crested newts; Fitness; Integration; Oxidative stressИзвор:
The Journal of Experimental Biology, 2018, 221, Pt 19, jeb182055-Финансирање / пројекти:
- Молекуларно физиолошки биомониторинг аеробних организама заснован на одређивању биохемијских биомаркера оксидационог стреса (RS-MESTD-Basic Research (BR or ON)-173041)
- Диверзитет водоземаца и гмизаваца Балкана: еволуциони аспекти и конзервација (RS-MESTD-Basic Research (BR or ON)-173043)
DOI: 10.1242/jeb.182055
PubMed: 30127083
WoS: 000447340900012
Scopus: 2-s2.0-85054458075
URI
http://jeb.biologists.org/content/early/2018/08/17/jeb.182055https://radar.ibiss.bg.ac.rs/handle/123456789/3160