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A New Species of Troglohyphantes(Araneae:Linyphiidae)from a Turkish Cave
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作者 Aydin Topcu Tuncay Turkes +2 位作者 Osman Seyyar Nurcan Demircan Hayriye Karabulut 《Open Journal of Animal Sciences》 2014年第2期85-91,共7页
The spider family Linyphiidae comprises 104 species in Turkey that of them eight species are known from the caves, we recently started to conduct intensive taxonomic and faunistic studies on this family. The genus Tro... The spider family Linyphiidae comprises 104 species in Turkey that of them eight species are known from the caves, we recently started to conduct intensive taxonomic and faunistic studies on this family. The genus Troglohyphantes was described in 1882 by Joseph as a cave spider from Carniola in western Slovenia. Members of this genus inhabited cave environment, neighbouring habitat and some species of them are true troglobites. A new species of Troglohyphantes Joseph 1881 is described from Turkey. Differences between the new species and related species are discussed. Troglohyphantes turcicus sp. n. (Araneae: Linyphiidae) is described from Buzluk cave in Turkey. Drawing of characteristic features, the male palpal organs and the female genitalia are presented. Key to the species of Troglohyphantes group is given including in T. turcicus sp. n. 展开更多
关键词 linyphiidae Troglohyphantes New Species Cave Spider Turkey
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Dispersal syndrome and landscape fragmentation in the salt-marsh specialist spider Erigone longipalpis
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作者 Maxime Dahirel Marie Wullschleger +2 位作者 Tristan Berry Solène Croci Julien Pétillon 《Current Zoology》 SCIE CAS CSCD 2023年第1期21-31,共11页
Dispersal and its evolution play a key role for population persistence in fragmented landscapes where habitat loss and fragmentation increase the cost of between-habitat movements.In such contexts,it is important to k... Dispersal and its evolution play a key role for population persistence in fragmented landscapes where habitat loss and fragmentation increase the cost of between-habitat movements.In such contexts,it is important to know how variation in dispersal and other traits is structured,and whether responses to landscape fragmentation are aligned with underlying dispersal-trait correlations,or dispersal syndromes.We,therefore,studied trait variation in Erigone longipalpis,a European spider species specialist of(often patchy)salt marshes.We collected spiders in two salt-marsh landscapes differing in habitat availability.We then reared lab-born spiders for two generations in controlled conditions,and measured dispersal and its association with various key traits.Erigone longipalpis population densities were lower in the more fragmented landscape.Despite this,we found no evidence of differences in dispersal,or any other trait we studied,between the two landscapes.While a dispersal syndrome was present at the among-individual level(dispersers were more fecund and faster growing,among others),there was no indication it was genetically driven:among-family differences in dispersal were not correlated with differences in other traits.Instead,we showed that the observed phenotypic covariations were mostly due to within-family correlations.We hypothesize that the dispersal syndrome is the result of asymmetric food access among siblings,leading to variation in development rates and carrying over to adult traits.Our results show we need to better understand the sources of dispersal variation and syndromes,especially when dispersal may evolve rapidly in response to environmental change. 展开更多
关键词 context-dependent dispersal habitat loss linyphiidae phenotypic correlations population density
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