Artigo

Goliath catfish spawning in the far western Amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles

We mapped the inferred long-distance migrations of four species of Amazonian goliath catfishes (Brachyplatystoma rousseauxii, B. platynemum, B. juruense and B. vaillantii) based on the presence of individuals with mature gonads and conducted statistical analysis of the expected long-distance downstr...

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Autor principal: Barthem, Ronaldo B.
Outros Autores: Goulding, Michael, Leite, Rosseval G., Cañas, Carlos, Forsberg, Bruce, Venticinque, Eduardo
Grau: Artigo
Idioma: eng
Publicado em: Museu Paraense Emilio Goeldi 2018
Assuntos:
bagres da Amazônia
CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA
Acesso em linha: http://repositorio.museu-goeldi.br/handle/mgoeldi/1248
id ir-mgoeldi-1248
recordtype dspace
spelling ir-mgoeldi-12482019-07-17T18:09:53Z Goliath catfish spawning in the far western Amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles Catfish Goliath desova no Amazônia ocidental distante confirmada por a distribuição de adultos maduros, larvas à deriva e migrando juvenis Barthem, Ronaldo B. Goulding, Michael Leite, Rosseval G. Cañas, Carlos Forsberg, Bruce Venticinque, Eduardo bagres da Amazônia CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA We mapped the inferred long-distance migrations of four species of Amazonian goliath catfishes (Brachyplatystoma rousseauxii, B. platynemum, B. juruense and B. vaillantii) based on the presence of individuals with mature gonads and conducted statistical analysis of the expected long-distance downstream migrations of their larvae and juveniles. By linking the distribution of larval, juvenile and mature adult size classes across the Amazon, the results showed: (i) that the main spawning regions of these goliath catfish species are in the western Amazon; (ii) at least three species—B. rousseauxii, B. platynemum, and B. juruense—spawn partially or mainly as far upstream as the Andes; (iii) the main spawning area of B. rousseauxii is in or near the Andes; and (iv) the life history migration distances of B. rousseauxii are the longest strictly freshwater fish migrations in the world. These results provide an empirical baseline for tagging experiments, life histories extrapolated from otolith microchemistry interpretations and other methods to establish goliath catfish migratory routes, their seasonal timing and possible return (homing) to western headwater tributaries where they were born. Nós mapeamos as migrações de longa distância inferidas de quatro espécies de bagres da Amazônia (Brachyplatystoma rousseauxii, B. platynemum, B. juruense e B. vaillantii) com base na presença de indivíduos com gônadas maduras e realizamos análises estatísticas da distância longa esperada. migrações a jusante de suas larvas e juvenis. Ao ligar a distribuição das classes de tamanho adulto, larval, juvenil e adulto em toda a Amazônia, os resultados mostraram: (i) que as principais regiões de desova dessas espécies de bagres de golias são na Amazônia ocidental; (ii) pelo menos três espécies - B. rousseauxii, B. platynemum e B. juruense - desovam parcial ou principalmente a montante dos Andes; (iii) a principal área de desova de B. rousseauxii está nos Andes ou nas proximidades; e (iv) as distâncias de migração da história de vida de B. rousseauxii são as mais longas migrações de peixes de água doce no mundo. Estes resultados fornecem uma linha de base empírica para experiências de marcação, histórias de vida extrapoladas a partir de interpretações microcirúrgicas de otólitos e outros métodos para estabelecer rotas migratórias de golias douradas, seu tempo sazonal e possível retorno a afluentes de cabeceira ocidentais onde eles nasceram. 2018-07-06T13:17:15Z 2018-06-26 2018-07-06T13:17:15Z 2016-12-28 Artigo de Periódico 2045-2322 http://repositorio.museu-goeldi.br/handle/mgoeldi/1248 eng Scientific Reports Acesso Aberto application/pdf Museu Paraense Emilio Goeldi Brasil MPEG
institution Repositório Institucional - Museu Paraense Emílio Goeldi
collection RepositorioEmilioGoeldi
language eng
topic bagres da Amazônia
CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA
spellingShingle bagres da Amazônia
CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA
Barthem, Ronaldo B.
Goliath catfish spawning in the far western Amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles
topic_facet bagres da Amazônia
CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA
description We mapped the inferred long-distance migrations of four species of Amazonian goliath catfishes (Brachyplatystoma rousseauxii, B. platynemum, B. juruense and B. vaillantii) based on the presence of individuals with mature gonads and conducted statistical analysis of the expected long-distance downstream migrations of their larvae and juveniles. By linking the distribution of larval, juvenile and mature adult size classes across the Amazon, the results showed: (i) that the main spawning regions of these goliath catfish species are in the western Amazon; (ii) at least three species—B. rousseauxii, B. platynemum, and B. juruense—spawn partially or mainly as far upstream as the Andes; (iii) the main spawning area of B. rousseauxii is in or near the Andes; and (iv) the life history migration distances of B. rousseauxii are the longest strictly freshwater fish migrations in the world. These results provide an empirical baseline for tagging experiments, life histories extrapolated from otolith microchemistry interpretations and other methods to establish goliath catfish migratory routes, their seasonal timing and possible return (homing) to western headwater tributaries where they were born.
format Artigo
author Barthem, Ronaldo B.
author2 Goulding, Michael
Leite, Rosseval G.
Cañas, Carlos
Forsberg, Bruce
Venticinque, Eduardo
author2Str Goulding, Michael
Leite, Rosseval G.
Cañas, Carlos
Forsberg, Bruce
Venticinque, Eduardo
title Goliath catfish spawning in the far western Amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles
title_short Goliath catfish spawning in the far western Amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles
title_full Goliath catfish spawning in the far western Amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles
title_fullStr Goliath catfish spawning in the far western Amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles
title_full_unstemmed Goliath catfish spawning in the far western Amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles
title_sort goliath catfish spawning in the far western amazon confirmed by the distribution of mature adults, drifting larvae and migrating juveniles
publisher Museu Paraense Emilio Goeldi
publishDate 2018
url http://repositorio.museu-goeldi.br/handle/mgoeldi/1248
_version_ 1787135666286493696
score 11.755432

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