| population genetic structure of the endangered kaiser's mountain newt, neurergus kaiseri (amphibia: salamandridae). | species often exhibit different levels of genetic structuring correlated to their environment. however, understanding how environmental heterogeneity influences genetic variation is difficult because the effects of gene flow, drift and selection are confounded. we investigated the genetic variation and its ecological correlates in an endemic and critically endangered stream breeding mountain newt, neurergus kaiseri, within its entire range in southwestern iran. we identified two geographic regio ... | 2016 | 26918642 |
| sperm collection and cryopreservation for threatened newt species. | the aims of this project were to transfer hormone-induced spermiation and sperm cryopreservation protocols developed in the model salamander species, ambystoma tigrinum, to three threatened newt species. additionally, we tested if supplementation with trehalose or thawing at different temperatures impacts post-thaw sperm parameters. hormone stimulation protocols were applied to male notophthalmus meridionalis (n = 10), neurergus kaiseri (n = 5) and tylototriton kweichowensis (n = 6) with sperm c ... | 2020 | 32437677 |
| geographic separation and genetic differentiation of populations are not coupled with niche differentiation in threatened kaiser's spotted newt (neurergus kaiseri). | the combination of niche modelling and landscape genetics (genomics) helps to disentangle processes that have shaped population structure in the evolutionary past and presence of species. herein, we integrate a comprehensive genomic dataset with ecological parameters and niche modelling for the threatened kaiser's newt, a newt species adapted to mountain spring-ponds in iran. genomic analysis suggests the existence of two highly differentiated clades north and south of the dez river. genetic var ... | 2019 | 30996234 |