Morphological and ecological divergence in two populations of European glass lizard,Pseudopus apodus(Squamata:Anguidae)  

作　　者：Olga Jovanovic Glavas Paula Pocanic Vanja Lovric Lorena Derezanin Zoran Tadic Duje Lisicic 

机构地区：[1]Department of Biology,University of Osijek,Osijek 31000,Croatia [2]Department of Animal Physiology,Faculty of Science,University of Zagreb,Zagreb 10000,Croatia

出　　处：《Zoological Research》2020年第2期172-181,共10页动物学研究（英文）

基　　金：supported through grant 119-0000000-1285 of the Ministry of Science of the Republic of Croatia to Z.T。

摘　　要：The European glass lizard,Pseudopus apodus(Pallas,1775),is a large,legless lizard with wide distribution across south-eastern Europe and eastern and central Asia.To date,morphological diversification among populations on a geographically small scale has not yet been reported in this lizard.Thus,we investigated the morphological variations and corresponding differences in habitat utilization between two populations of P.apodus inhabiting the same biogeographical zone within a relatively close geographic area.We hypothesized that minor differences in habitat could induce a significant level of morphological differentiation,thus indicating morphological plasticity in this species on a small geographical scale.We sampled 164 individuals(92 from the Croatian mainland and 72 from the island of Cres).Results showed that P.apodus indeed exhibited morphological differences between populations in the same biogeographical zone within a relatively close geographic area,with the Cres Island individuals being generally larger than the individuals from the mainland.Some ecological characteristics were similar in both populations(e.g.,soil temperature,distance to hiding place),whereas others were distinct(e.g.,air temperature and humidity).In addition,vegetation cover differed between the two sites,with more vegetation present on the mainland than on the island.Furthermore,the Cres Island population showed clear sexual dimorphism,which was absent in the mainland population.The European glass lizard, Pseudopus apodus(Pallas, 1775), is a large, legless lizard with wide distribution across south-eastern Europe and eastern andcentralAsia.Todate,morphological diversificationamongpopulationsona geographically small scale has not yet been reported in this lizard. Thus, we investigated the morphologicalvariationsandcorresponding differences in habitat utilization between two populations of P. apodus inhabiting the same biogeographical zone within a relatively close geographic area. We hypothesized that minor differences in habitat could induce a significant level of morphological differentiation, thus indicating morphological plasticity in this species on a small geographical scale. We sampled 164 individuals(92 from the Croatian mainland and 72 from the island of Cres). Results showed that P. apodus indeed exhibitedmorphologicaldifferencesbetween populations in the same biogeographical zone within a relatively close geographic area, with the Cres Island individuals being generally larger than the individuals from the mainland. Some ecological characteristics were similar in both populations(e.g.,soil temperature, distance to hiding place), whereas others were distinct(e.g., air temperature and humidity). In addition, vegetation cover differed between the two sites, with more vegetation present on the mainland than on the island. Furthermore, the Cres Island population showed clear sexual dimorphism, which was absent in the mainland population.

关 键 词：Mediterranean Morphology SAURIA Sexual DIMORPHISM 

分 类 号：Q954[生物学—动物学]