Biologia populacional de Imparfinis minutus (Siluriformes, Heptapteridae) na microbacia do Ribeirão Grande, serra da Mantiqueira oriental, Estado de São Paulo

dc.contributor.authorde Moraes, Mariana Bissoli
dc.contributor.authorBraga, Francisco Manoel de Souza [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:34:58Z
dc.date.available2014-05-20T15:34:58Z
dc.date.issued2011-07-01
dc.description.abstractPopulational biology of Imparfinis minutus (Siluriformes, Heptapteridae) in the Ribeirao Grande microbasin, eastern Mantiqueira mountain range, São Paulo State. The aim of the work was to analyze biological aspects and distribution of Imparfinis minutus in the Ribeirao Grande microbasin (22[degree]4708[minute]''S, 45[degree]28[minute]17''W), in eastern Mantiqueira mountain range, from July 2001 to April 2002. Among the 37 species sampled, I. minutus (Siluriformes, Heptapteridae), was distributed from the piedmont to the plains of the Vale do Paraiba. The occurrence of this species was associated with the environments of small water volume, bottom with stones and gravel. The amplitude length of I. minutus was 4.75 to 12.75 cm. The length-weight relationship of the population was estimated at W = 0.0052 L3,13. Analyzing the alometric (Ka) and relative (Kr) condition factors, both indexes presented similar values. The lowest value was obtained in July, increasing gradually in October and January, and peaking in April. The analysis of the gonadossomatic relationship (GSR) of females showed higher values in July and January. The reproductive period of I. minutus occurred on spring/summer (October to January), as suggested by the gonadossomatic relationship and condition factor results. Feeding activity was constant, with fat visceral deposition concentrated in April and July. Imparfinis minutus is an aquatic insectivore opportunist species, consuming Diptera and Trichoptera larvae as secondary items. Most ingested food items were autochthonous resources.en
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Av 24-A,1515, São Paulo, BR-13506-900 BC, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Av 24-A,1515, São Paulo, BR-13506-900 BC, Brazil
dc.format.extent301-310
dc.identifierhttp://dx.doi.org/10.4025/actascibiolsci.v33i3.6591
dc.identifier.citationActa Scientiarum Biological Sciences. , v. 33, n. 3, p. 301-310, 2011.
dc.identifier.doi10.4025/actascibiolsci.v33i3.6591
dc.identifier.fileZOORECZOOR14801001430.pdf
dc.identifier.issn1679-9283
dc.identifier.issn1807-863X
dc.identifier.lattes2425382266290470
dc.identifier.urihttp://hdl.handle.net/11449/42720
dc.identifier.wosZOOREC:ZOOR14801001430
dc.language.isopor
dc.relation.ispartofActa Scientiarum: Biological Sciences
dc.relation.ispartofsjr0,208
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleBiologia populacional de Imparfinis minutus (Siluriformes, Heptapteridae) na microbacia do Ribeirão Grande, serra da Mantiqueira oriental, Estado de São Paulopt
dc.title.alternativePopulational biology of Imparfinis minutus (Siluriformes, Heptapteridae) in the Ribeirao Grande microbasin, eastern Mantiqueira mountain range, São Paulo State.en
dc.typeArtigo
dcterms.licensehttp://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/about/editorialPolicies#openAccessPolicy
unesp.author.lattes2425382266290470
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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