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dc.contributor.authorPleguezuelos Gómez, Juan Manuel 
dc.contributor.authorFernández-Cardenete, Juan R.
dc.contributor.authorHonrubia, Santiago
dc.contributor.authorFeriche Fernández-Castanys, Mónica 
dc.contributor.authorVillafranca, Carmen
dc.date.accessioned2014-06-25T11:41:42Z
dc.date.available2014-06-25T11:41:42Z
dc.date.issued2007
dc.identifier.citationPleguezuelos, J.M.; et al. Correlates between morphology, diet and foraging mode in the Ladder Snake Rhinechis scalaris (Schinz, 1822). Contributions to Zoology, 76(3): 179-186 (2007). [http://hdl.handle.net/10481/32366]es_ES
dc.identifier.issn1383-4517
dc.identifier.urihttp://hdl.handle.net/10481/32366
dc.description.abstractIn many vertebrates, foraging mode (active versus sit-and-wait) is tied to some traits of their natural history such as morphology, type of prey, rate of food acquisition, and survival rate. We explore the correlates between some morphological traits of a Mediterranean colubrid and its feeding ecology and the predation risk, by comparing data on teeth number, tail damage, and diet. A large sample (n = 368) of the Ladder Snake, Rhinechis scalaris is used. The species feeds almost exclusively on endotherms, mainly mammals (nearly 95% of the diet in mass), which set R. scalaris among the most stenophagous snakes in the western Palaearctic. There is also a high percentage of motionless prey in the diet (up to 50% in prey mass), such as nestling birds, mammals and bird eggs. The species is so canalised to a diet based on endotherms that it does not follow the general rule in medium-sized snakes of an ontogenetic dietary shift from ectothermic to endothermic prey; juveniles consumed the smallest endothermic animals: nestling small-mammals. The number of maxillary teeth (mean 15.1), the lowest within the former and large genus Elaphe, is likely related to its trophic specialization. Rhinechis scalaris also faces an elevated risk of predation, something general in active searcher snakes compared to ambush foragers, as revealed by many individuals with damaged tails (19.9%), the highest within the Iberian community of snakes. We conclude from indirect evidence (high predation on stationary prey, many individuals with damaged tails) that the species is an active searcher and that this foraging mode influences other natural-history traits (i.e. reproductive habits).es_ES
dc.description.sponsorshipThe last stage of this study was supported by the Research Award REN2000-1376 GLO of the Spanish MCYT to the senior author and to MF.es_ES
dc.language.isoenges_ES
dc.publisherNationaal Natuurhistorisch Museumes_ES
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 Licensees_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es_ES
dc.subjectFeeding habitses_ES
dc.subjectTeeth numberes_ES
dc.subjectTail breakagees_ES
dc.subjectSpaines_ES
dc.titleCorrelates between morphology, diet and foraging mode in the Ladder Snake Rhinechis scalaris (Schinz, 1822)es_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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