| the effect of short-term fasting on the oxidative status of larvae of crested newt species and their hybrids. | in nature, animals often face periods without food caused by seasonal fluctuations and/or prey scarcity. an organism's physiological response to imposed energetic limitations is followed by changes in mitochondrial functioning (adjustment of energy metabolism) and a reduction of non-essential processes. however, this energy-saving strategy can have its costs. in this study, we examined oxidative stress as one of the possible physiological costs of short-term, two-week-long food deprivation on de ... | 2021 | 33022409 |
| the effect of shelter on oxidative stress and aggressive behavior in crested newt larvae (triturus spp.). | shelters are important for animal survival. provision of adequate hiding places allow animals to express their natural sheltering behavior and it can have different positive effects on cortisol levels, physiological processes and mental performance. although the absence of a refuge activates some stress response, its effect on oxidative stress has not been adequately examined. this study investigated whether the presence/absence of a shelter modifies the oxidative status (the antioxidant system ... | 2020 | 32244815 |
| oxidative cost of interspecific hybridization: a case study of two triturus species and their hybrids. | 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 ... | 2018 | 30127083 |
| postglacial species displacement in triturus newts deduced from asymmetrically introgressed mitochondrial dna and ecological niche models. | if the geographical displacement of one species by another is accompanied by hybridization, mitochondrial dna can introgress asymmetrically, from the outcompeted species into the invading species, over a large area. we explore this phenomenon using the two parapatric crested newt species, triturus macedonicus and t. karelinii, distributed on the balkan peninsula in south-eastern europe, as a model. | 2012 | 22935041 |
| new polymorphic microsatellite loci for the macedonian crested newt, triturus macedonicus, and cross-priming testing in four other crested newt species. | eleven microsatellites have been characterized for triturus macedonicus. nine loci showed different variation patterns in a sample of 40 individuals from a single breeding pond in zagori province (greece), with an average number of 4.2 alleles per locus and an expected heterozygosity ranging from 0.1199 to 0.8079. distinct cross-priming amplification rates were recovered on four additional crested newt species. two monomorphic t. macedonicus loci were polymorphic in other triturus species. the m ... | 2008 | 21586058 |