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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
11/09/1997 |
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Data da última atualização: |
05/04/2017 |
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Autoria: |
BALON, E. K. |
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Título: |
Reproductive guilds of fishes: a proposal and definition. |
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Ano de publicação: |
1975 |
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Fonte/Imprenta: |
Journal of the Fisheries Research Board of Canada, v.32, n.6, p.821-864, 1975. |
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Idioma: |
Inglês |
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Conteúdo: |
The emergence of efficient ecosystem modelling is severely hampered by the need for an ecological classification of fishes. An earlier concept of ecological groups is here expanded to cover all living fishes. This eecological classification is based mainly on form and function in early developmental intervals, on preferred spawning grounds, and on features of reproductive bethavior. Within the adaptations for reproduction and embryonic develeopment two factors prevail - predators and the oxygen regime; consequently, spawning behavior and spawning grounds determine ensuing respiratory conditions and available protection from predators. The remaining factors are more or less associated with those two. From the point of view of resource exploitation, factors other than feeding habits governing density, biomass, and production are more important. In this sense reproductive guilds are more meningful than feeding strategies, to which one usage og "guild " was limited. Thirty-two guilds putatively encompass all the 30.000 living fish taxa (or about 20.000 species) and form an ecological classification unrelated to the Linnean classification. The guilds retain phyletic significance in respect to reproductive systems and form a basis for the construction of models on natural and cultural succession. Number of guilds and frequency of taxa within guilds in a given area reflect geochronological sequences and invasion abilities of members of different guilds. |
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Palavras-Chave: |
Classificacao ecologica; Ecological classification. |
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Thesagro: |
Peixe; População; Reprodução. |
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Thesaurus Nal: |
fish; population; reproduction. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02066naa a2200217 a 4500
001 1791613
005 2017-04-05
008 1975 bl --- 0-- u #d
100 1 $aBALON, E. K.
245 $aReproductive guilds of fishes$ba proposal and definition.
260 $c1975
520 $aThe emergence of efficient ecosystem modelling is severely hampered by the need for an ecological classification of fishes. An earlier concept of ecological groups is here expanded to cover all living fishes. This eecological classification is based mainly on form and function in early developmental intervals, on preferred spawning grounds, and on features of reproductive bethavior. Within the adaptations for reproduction and embryonic develeopment two factors prevail - predators and the oxygen regime; consequently, spawning behavior and spawning grounds determine ensuing respiratory conditions and available protection from predators. The remaining factors are more or less associated with those two. From the point of view of resource exploitation, factors other than feeding habits governing density, biomass, and production are more important. In this sense reproductive guilds are more meningful than feeding strategies, to which one usage og "guild " was limited. Thirty-two guilds putatively encompass all the 30.000 living fish taxa (or about 20.000 species) and form an ecological classification unrelated to the Linnean classification. The guilds retain phyletic significance in respect to reproductive systems and form a basis for the construction of models on natural and cultural succession. Number of guilds and frequency of taxa within guilds in a given area reflect geochronological sequences and invasion abilities of members of different guilds.
650 $afish
650 $apopulation
650 $areproduction
650 $aPeixe
650 $aPopulação
650 $aReprodução
653 $aClassificacao ecologica
653 $aEcological classification
773 $tJournal of the Fisheries Research Board of Canada$gv.32, n.6, p.821-864, 1975.
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Registro original: |
Embrapa Pantanal (CPAP) |
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