Feeding ecology, density and biomass of the freshwater turtle, Phrynops geoffroanus, inhabiting a polluted urban river in south-eastern Brazil

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorSouza, Franco Leandro
dc.creatorAbe, Augusto Shinya
dc.date2014-05-27T11:19:58Z
dc.date2016-10-25T18:16:39Z
dc.date2014-05-27T11:19:58Z
dc.date2016-10-25T18:16:39Z
dc.date2000-12-01
dc.date.accessioned2017-04-06T00:58:01Z
dc.date.available2017-04-06T00:58:01Z
dc.identifierJournal of Zoology, v. 252, n. 4, p. 437-446, 2000.
dc.identifier0952-8369
dc.identifierhttp://hdl.handle.net/11449/66306
dc.identifierhttp://acervodigital.unesp.br/handle/11449/66306
dc.identifier10.1017/S0952836900000194
dc.identifierWOS:000166123900004
dc.identifier2-s2.0-0034490355
dc.identifierhttp://dx.doi.org/10.1017/S0952836900000194
dc.identifierhttp://dx.doi.org/10.1111/j.1469-7998.2000.tb01226.x
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/887900
dc.descriptionThis study examines the ecology of a population of Geoffroy's side-necked turtle Phrynops geoffroanus inhabiting a polluted urban river in Ribeirão Preto city, São Paulo state, south-eastern Brazil. Adult turtles fed mainly on Chironomidae larvae and pupae (Chironomus cf. plumosus, 100% of occurrence frequency) and domestic waste, but they also consumed terrestrial items (cockroach, snails) and carrion. Juvenile turtles showed more feeding diversity than the adults and exhibited a trend for predation on Chironomidae pupae, but this is not reflected in resource partitioning. The elevated number of turtles (170-230 turtles/ha of river) and biomass (255-345 kg/ha of river) inhabiting this urban river is probably the result of the abundance of sewage and organic waste produced by humans, the absence of predators, and increased availability of nesting areas. Such factors convert this area into an environment highly advantageous for the survival of Geoffroy's side-necked turtle.
dc.languageeng
dc.relationJournal of Zoology
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectBiomass
dc.subjectBrazil
dc.subjectDensity
dc.subjectPhrynops geoffroanus
dc.subjectTurtle
dc.subjectbiomass
dc.subjectfeeding ecology
dc.subjectpollution effect
dc.subjectpopulation density
dc.subjectsewage
dc.subjectturtle
dc.subjectBlattaria
dc.subjectChironomidae
dc.subjectDiptera
dc.subjectGastropoda
dc.subjectPleurodira
dc.subjectTestudines
dc.subjectVertebrata
dc.titleFeeding ecology, density and biomass of the freshwater turtle, Phrynops geoffroanus, inhabiting a polluted urban river in south-eastern Brazil
dc.typeOtro


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