Comparison of the diel and spatial distribution patterns of ichthyoplankton and ichthyoneuston in the Southeastern Brazilian Bight
Fish larvae were collected by neuston and bongo nets, in the Southeastern Brazil, during four océanographie cruises (January 1980; January 1981; October 1981; and March 1982). The results are compared and analyzed in order to study the patterns of diel vertical distributions of fish larvae and to de...
Published in: | Brazilian Journal of Oceanography |
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Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Universidade de São Paulo. Instituto Oceanográfico
1990
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Online Access: | https://www.revistas.usp.br/biocean/article/view/6728 |
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ftunivsaopojs:oai:revistas.usp.br:article/6728 2023-05-15T17:45:47+02:00 Comparison of the diel and spatial distribution patterns of ichthyoplankton and ichthyoneuston in the Southeastern Brazilian Bight Katsuragawa, Mario Matsuura, Yasunobu 1990-12-01 application/pdf https://www.revistas.usp.br/biocean/article/view/6728 eng eng Universidade de São Paulo. Instituto Oceanográfico https://www.revistas.usp.br/biocean/article/view/6728/8197 https://www.revistas.usp.br/biocean/article/view/6728 Boletim do Instituto Oceanografico; Vol. 38 No. 2 (1990); 133-146 Boletim do Instituto Oceanográfico; Vol. 38 Núm. 2 (1990); 133-146 Boletim do Instituto Oceanográfico; v. 38 n. 2 (1990); 133-146 2316-8951 0373-5524 Levantamentos do ictioplâncton Nêuston Microcamada de superfície Equipamentos para coleta de plâncton Distribuição vertical Brasil costa sudeste Ichthyoplankton survey Neuston Surface microlayer Sampling Plankton collecting devices Vertical distribution Southeastern Brazilian coast info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1990 ftunivsaopojs 2022-08-23T00:14:28Z Fish larvae were collected by neuston and bongo nets, in the Southeastern Brazil, during four océanographie cruises (January 1980; January 1981; October 1981; and March 1982). The results are compared and analyzed in order to study the patterns of diel vertical distributions of fish larvae and to detect sampling problems. Larvae collected with neuston net were quite different in types and size composition, when compared with those collected with bongo net in oblique tows. Clear tendency of stratification in size composition at the uppermost layer can be observed on juveniles ( >; 19 mm) of Sardinella brasiliensis which also showed day time avoidance. Most of the neustonic taxa were also caught in the deeper layers, although some groups, e.g. Mugilidae, Mullidae, and Gerreidae, were more abundant at the surface. Density of ichthyoneuston is much higher than those observed in the Northwest Atlantic and number of fish larvae collected during the day by neuston net exceeded that of night samples. Larvas de peixes foram coletadas com rede de nêuston e rede bongô, na costa sudeste do Brasil, durante quatro cruzeiros oceanográficos (Jan/1980; Jan/1981; Out/1981; Mar/1982). São estudados os padrões de distribuição diária de larvas e problemas de amostragem. Numa comparação entre coletas de superfície e coletas oblíquas, observam-se diferenças em composição, tanto em termos de espécies como de tamanho de larvas. Pode ser observada uma clara tendência de estratificação por composição de tamanho para Sardinella brasiliensis em que espécimes juvenis (>; 19 mm) ocorreram preferencialmente na camada superficial. Estes juvenis também apresentaram maior capacidade de fuga da boca da rede durante o período diurno. A maioria dos táxons de ocorrência neustônica foi também capturada em camadas mais profundas, mas alguns grupos como Mugilidae, Mullidae e Gerreidae predomiram na camada superficial. A densidade do ictionêuston é mais elevada na nossa região do que a observada no Atlântico noroeste, e o numero de larvas de ... Article in Journal/Newspaper Northwest Atlantic Universidade de São Paulo: Portal de Revistas da USP Fuga ENVELOPE(-67.100,-67.100,-68.202,-68.202) Sudeste ENVELOPE(-60.516,-60.516,-62.988,-62.988) Brazilian Journal of Oceanography 38 2 133 146 |
institution |
Open Polar |
collection |
Universidade de São Paulo: Portal de Revistas da USP |
op_collection_id |
ftunivsaopojs |
language |
English |
topic |
Levantamentos do ictioplâncton Nêuston Microcamada de superfície Equipamentos para coleta de plâncton Distribuição vertical Brasil costa sudeste Ichthyoplankton survey Neuston Surface microlayer Sampling Plankton collecting devices Vertical distribution Southeastern Brazilian coast |
spellingShingle |
Levantamentos do ictioplâncton Nêuston Microcamada de superfície Equipamentos para coleta de plâncton Distribuição vertical Brasil costa sudeste Ichthyoplankton survey Neuston Surface microlayer Sampling Plankton collecting devices Vertical distribution Southeastern Brazilian coast Katsuragawa, Mario Matsuura, Yasunobu Comparison of the diel and spatial distribution patterns of ichthyoplankton and ichthyoneuston in the Southeastern Brazilian Bight |
topic_facet |
Levantamentos do ictioplâncton Nêuston Microcamada de superfície Equipamentos para coleta de plâncton Distribuição vertical Brasil costa sudeste Ichthyoplankton survey Neuston Surface microlayer Sampling Plankton collecting devices Vertical distribution Southeastern Brazilian coast |
description |
Fish larvae were collected by neuston and bongo nets, in the Southeastern Brazil, during four océanographie cruises (January 1980; January 1981; October 1981; and March 1982). The results are compared and analyzed in order to study the patterns of diel vertical distributions of fish larvae and to detect sampling problems. Larvae collected with neuston net were quite different in types and size composition, when compared with those collected with bongo net in oblique tows. Clear tendency of stratification in size composition at the uppermost layer can be observed on juveniles ( >; 19 mm) of Sardinella brasiliensis which also showed day time avoidance. Most of the neustonic taxa were also caught in the deeper layers, although some groups, e.g. Mugilidae, Mullidae, and Gerreidae, were more abundant at the surface. Density of ichthyoneuston is much higher than those observed in the Northwest Atlantic and number of fish larvae collected during the day by neuston net exceeded that of night samples. Larvas de peixes foram coletadas com rede de nêuston e rede bongô, na costa sudeste do Brasil, durante quatro cruzeiros oceanográficos (Jan/1980; Jan/1981; Out/1981; Mar/1982). São estudados os padrões de distribuição diária de larvas e problemas de amostragem. Numa comparação entre coletas de superfície e coletas oblíquas, observam-se diferenças em composição, tanto em termos de espécies como de tamanho de larvas. Pode ser observada uma clara tendência de estratificação por composição de tamanho para Sardinella brasiliensis em que espécimes juvenis (>; 19 mm) ocorreram preferencialmente na camada superficial. Estes juvenis também apresentaram maior capacidade de fuga da boca da rede durante o período diurno. A maioria dos táxons de ocorrência neustônica foi também capturada em camadas mais profundas, mas alguns grupos como Mugilidae, Mullidae e Gerreidae predomiram na camada superficial. A densidade do ictionêuston é mais elevada na nossa região do que a observada no Atlântico noroeste, e o numero de larvas de ... |
format |
Article in Journal/Newspaper |
author |
Katsuragawa, Mario Matsuura, Yasunobu |
author_facet |
Katsuragawa, Mario Matsuura, Yasunobu |
author_sort |
Katsuragawa, Mario |
title |
Comparison of the diel and spatial distribution patterns of ichthyoplankton and ichthyoneuston in the Southeastern Brazilian Bight |
title_short |
Comparison of the diel and spatial distribution patterns of ichthyoplankton and ichthyoneuston in the Southeastern Brazilian Bight |
title_full |
Comparison of the diel and spatial distribution patterns of ichthyoplankton and ichthyoneuston in the Southeastern Brazilian Bight |
title_fullStr |
Comparison of the diel and spatial distribution patterns of ichthyoplankton and ichthyoneuston in the Southeastern Brazilian Bight |
title_full_unstemmed |
Comparison of the diel and spatial distribution patterns of ichthyoplankton and ichthyoneuston in the Southeastern Brazilian Bight |
title_sort |
comparison of the diel and spatial distribution patterns of ichthyoplankton and ichthyoneuston in the southeastern brazilian bight |
publisher |
Universidade de São Paulo. Instituto Oceanográfico |
publishDate |
1990 |
url |
https://www.revistas.usp.br/biocean/article/view/6728 |
long_lat |
ENVELOPE(-67.100,-67.100,-68.202,-68.202) ENVELOPE(-60.516,-60.516,-62.988,-62.988) |
geographic |
Fuga Sudeste |
geographic_facet |
Fuga Sudeste |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
Boletim do Instituto Oceanografico; Vol. 38 No. 2 (1990); 133-146 Boletim do Instituto Oceanográfico; Vol. 38 Núm. 2 (1990); 133-146 Boletim do Instituto Oceanográfico; v. 38 n. 2 (1990); 133-146 2316-8951 0373-5524 |
op_relation |
https://www.revistas.usp.br/biocean/article/view/6728/8197 https://www.revistas.usp.br/biocean/article/view/6728 |
container_title |
Brazilian Journal of Oceanography |
container_volume |
38 |
container_issue |
2 |
container_start_page |
133 |
op_container_end_page |
146 |
_version_ |
1766149047798726656 |