Data/hora: 23/06/2024 01:55:43

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 30/03/1999
Data da última atualização: | 30/03/1999
Autoria: | MENEZES, N. A.; WAGNER, H. J.; ALI, M. A.
Afiliação: | Museu de Zoologia, Universidade de Sao Paulo, Bresil. Abt. Klin. Morphologie, Unibersttaed Ulm, Rep. federale d' Allemagne. Department de biologie, Universite de Montreal, Quebec, Canada.
Título: | Retinal adaptions in fishes from a floodplain environment in the Central Amazon Basin.
Ano de publicação: | 1981
Fonte/Imprenta: | Revista Canadense de Biologia, v.40, n.1, p.111-132, mar. 1981.
Idioma: | Inglês
Conteúdo: | Retinal structure in 18 species belonging to 9 families from a floodplain habitat in the amazon basin studied and attempts made to understand the retinal adaptations in relation to the peculiarities of the habitat, ages of fishes and their taxonomic position. This habitat has a relatively rich and diversified fish fauna, which represent the main groups such as Characoidei, Siluroidei, Gymnotoidei and Perciformes. the predominante of immature forms indicates that these habiotats are used as nursery grounds. A consideration of the young belong to species which, as adult, are not typical inhabitants of the floodplains and are thus temporary dwellers in these biotopes, only during their juvenile stages. The young of the other species may be considered permanent dwellers. All the adults belong species which are typical floodplain inhabitants. There are no retinal characteristics which may be considered unique to the young permanmet-or temporary dwellers to the adults. the floodplain areas are characterised by dim light and turbid water. The retinal adaptations in the three groups seem more closely related to the species position in the habitat (permanent or temporary) and to their than to the stage of development (age).
Palavras-Chave: | Amazon basin; Bacia Amazonica; Estrutura retiniana; Floodplain environment; Planicie de inundacao; Retinal structure.
Thesagro: | Meio Ambiente; Peixe.
Thesaurus Nal: | Brazil; fish.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (37873-1) - ADD - SP - -- - SP4433 -  - 4433 - DIS