Biology of a catfish, Trichomycterus sp (Pisces, Siluriformes), in a pristine stream in the Morro do Diabo State Park, southeastern Brazil

Página do item simplificado
dc.contributor.authorCasatti, L.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:03:19Z
dc.date.available2014-05-20T14:03:19Z
dc.date.issued2003-08-01
dc.description.abstractThe distribution, activity, diet, and reproduction of an undescribed catfish species of the genus Trichomycterus (Trichomycteridae) were studied in the Morro do Diabo State Park, an important conservation area in the Rio Paranapanema basin, State of São Paulo, southeastern Brazil. Trichomycterus sp. is a rheophilic species occurring solely in the riffle areas of the streams and hunts mostly immature aquatic insects during the day by picking them from the substrate. The population has a balanced sex ratio, but females were uncommon in the smallest and largest size classes suggesting that females demonstrate a more accelerated growth pattern. Presence of mature individuals throughout the year represents an opportunistic reproductive tactic for fishes living in fast flowing waters, where the clutches could be shifted by the current, but the high incidence of mature individuals in the wet season may be related to optimal environmental conditions for juveniles during that period. Because of the restriction of Trichomycterus sp. to riffle environments, the conservation of this species depends on the maintenance of the original characteristics of these headwaters. That demands protecting the riparian vegetation and consequently the stream from excessive siltation resulting from runoff and erosion.en
dc.description.affiliationUNESP, IBILCE, Dept Bot & Zool, Lab Ictiol, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.description.affiliationUnespUNESP, IBILCE, Dept Bot & Zool, Lab Ictiol, BR-15054000 Sao Jose do Rio Preto, SP, Brazil
dc.format.extent105-110
dc.identifierhttp://dx.doi.org/10.1076/snfe.38.2.105.15928
dc.identifier.citationStudies on Neotropical Fauna and Environment. Lisse: Swets Zeitlinger Publishers, v. 38, n. 2, p. 105-110, 2003.
dc.identifier.doi10.1076/snfe.38.2.105.15928
dc.identifier.issn0165-0521
dc.identifier.lattes8041011456158217
dc.identifier.urihttp://hdl.handle.net/11449/22315
dc.identifier.wosWOS:000185320700004
dc.language.isoeng
dc.publisherSwets Zeitlinger Publishers
dc.relation.ispartofStudies on Neotropical Fauna and Environment
dc.relation.ispartofjcr0.722
dc.relation.ispartofsjr0,445
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectTrichomycteruspt
dc.subjectcatfishpt
dc.subjectconservationpt
dc.subjectStreampt
dc.subjectfeeding behaviorpt
dc.subjectreproductionpt
dc.subjectdietpt
dc.subjectupper Rio Paranapt
dc.subjectRio Paranapanemapt
dc.subjectMorro do Diabo State Parkpt
dc.titleBiology of a catfish, Trichomycterus sp (Pisces, Siluriformes), in a pristine stream in the Morro do Diabo State Park, southeastern Brazilen
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/preparation/copyright.asp
dcterms.rightsHolderSwets Zeitlinger Publishers
unesp.author.lattes8041011456158217
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Zoologia e Botânica - IBILCE