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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Format: | Article in Journal/Newspaper |
Language: | English |
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Universidade de São Paulo
1990
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Online Access: | https://doi.org/10.1590/S1679-87591990000200003 https://doaj.org/article/4252fea56da84b80aa884d668d30d869 |
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ftdoajarticles:oai:doaj.org/article:4252fea56da84b80aa884d668d30d869 2023-05-15T17:45:47+02:00 Comparison of the diel and spatial distribution patterns of ichthyoplankton and ichthyoneuston in the Southeastern Brazilian Bight Mario Katsuragawa Yasunobu Matsuura 1990-12-01T00:00:00Z https://doi.org/10.1590/S1679-87591990000200003 https://doaj.org/article/4252fea56da84b80aa884d668d30d869 EN eng Universidade de São Paulo http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87591990000200003 https://doaj.org/toc/1679-8759 https://doaj.org/toc/1982-436X doi:10.1590/S1679-87591990000200003 1679-8759 1982-436X https://doaj.org/article/4252fea56da84b80aa884d668d30d869 Brazilian Journal of Oceanography, Vol 38, Iss 2, Pp 133-146 (1990) 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 Oceanography GC1-1581 article 1990 ftdoajarticles https://doi.org/10.1590/S1679-87591990000200003 2022-12-31T11:53:13Z 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 peixes ... Article in Journal/Newspaper Northwest Atlantic Directory of Open Access Journals: DOAJ Articles 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 |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
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 Oceanography GC1-1581 |
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 Oceanography GC1-1581 Mario Katsuragawa Yasunobu Matsuura 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 Oceanography GC1-1581 |
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 peixes ... |
format |
Article in Journal/Newspaper |
author |
Mario Katsuragawa Yasunobu Matsuura |
author_facet |
Mario Katsuragawa Yasunobu Matsuura |
author_sort |
Mario Katsuragawa |
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 |
publishDate |
1990 |
url |
https://doi.org/10.1590/S1679-87591990000200003 https://doaj.org/article/4252fea56da84b80aa884d668d30d869 |
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 |
Brazilian Journal of Oceanography, Vol 38, Iss 2, Pp 133-146 (1990) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87591990000200003 https://doaj.org/toc/1679-8759 https://doaj.org/toc/1982-436X doi:10.1590/S1679-87591990000200003 1679-8759 1982-436X https://doaj.org/article/4252fea56da84b80aa884d668d30d869 |
op_doi |
https://doi.org/10.1590/S1679-87591990000200003 |
container_title |
Brazilian Journal of Oceanography |
container_volume |
38 |
container_issue |
2 |
container_start_page |
133 |
op_container_end_page |
146 |
_version_ |
1766149034142072832 |