Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da FURG (RI FURG) |
Texto Completo: | http://repositorio.furg.br/handle/1/2369 |
Resumo: | The distribution of paralarvae and small juvenile cephalopods sampled by a rectangular midwater trawl (opening area 8 m²) over the continental shelf off Cape Santa Marta Grande, southern Brazil (28º09’S–29º56’S) during spring 1989 is discussed. An intrusion of Brazil Current Tropical Water (22ºC; 36.5) separates warm, less-saline water (22ºC; 35.2) from cooler, more-saline water (15ºC; 36.4). Prevailing northeasterly winds led to upwelling of South Atlantic Central Water over the shelf, promoting high Chl a concentrations. Three species constituted 99% of the 628 cephalopods collected: Illex argentinus (n = 540; 4–40 mm mantle length, ML), Argonauta nodosa (n = 46; 2–19 mm ML), and Loligo sanpaulensis (n = 42, 2–21 mm ML). Segregation of I. argentinus juveniles of similar size suggests school formation as small as 10 mm ML. The presence of mature males along with fertilized female A. nodosa indicates mating early in life. There was a consistent and direct link between high plankton production and high densities of juvenile cephalopods through a short and ecologically efficient food chain. The relationship between production, pycnocline intensity, and the density of paralarvae and juveniles revealed suitable conditions for survival and growth during the upwelling season. |
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Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern BrazilArgonauta nodosaCephalopodsChl aIllex argentinusLoligo sanpaulensisParalarvaeUpwellingThe distribution of paralarvae and small juvenile cephalopods sampled by a rectangular midwater trawl (opening area 8 m²) over the continental shelf off Cape Santa Marta Grande, southern Brazil (28º09’S–29º56’S) during spring 1989 is discussed. An intrusion of Brazil Current Tropical Water (22ºC; 36.5) separates warm, less-saline water (22ºC; 35.2) from cooler, more-saline water (15ºC; 36.4). Prevailing northeasterly winds led to upwelling of South Atlantic Central Water over the shelf, promoting high Chl a concentrations. Three species constituted 99% of the 628 cephalopods collected: Illex argentinus (n = 540; 4–40 mm mantle length, ML), Argonauta nodosa (n = 46; 2–19 mm ML), and Loligo sanpaulensis (n = 42, 2–21 mm ML). Segregation of I. argentinus juveniles of similar size suggests school formation as small as 10 mm ML. The presence of mature males along with fertilized female A. nodosa indicates mating early in life. There was a consistent and direct link between high plankton production and high densities of juvenile cephalopods through a short and ecologically efficient food chain. The relationship between production, pycnocline intensity, and the density of paralarvae and juveniles revealed suitable conditions for survival and growth during the upwelling season.2012-08-15T21:50:41Z2012-08-15T21:50:41Z2010info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfVIDAL, Erica Alves Gonzalez; HAIMOVICI, Manuel; HACKBART, Vivian Cristina dos Santos. Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil. ICES Journal of Marine Science, v. 67, n. 7, p. 1346-1352, 2010. Disponível em: <http://www.demersais.furg.br/Files/2010.Vidal.etal.paralarvae.primary.production.CIAC.ICES.J.MAr.Sci.pdf>. Acesso em: 30 jun. 2012.http://repositorio.furg.br/handle/1/2369engVidal, Erica Alves GonzalezHaimovici, ManuelHackbart, Vivian Cristina dos Santosinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURG2012-08-15T21:50:41Zoai:repositorio.furg.br:1/2369Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2012-08-15T21:50:41Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false |
dc.title.none.fl_str_mv |
Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil |
title |
Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil |
spellingShingle |
Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil Vidal, Erica Alves Gonzalez Argonauta nodosa Cephalopods Chl a Illex argentinus Loligo sanpaulensis Paralarvae Upwelling |
title_short |
Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil |
title_full |
Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil |
title_fullStr |
Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil |
title_full_unstemmed |
Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil |
title_sort |
Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil |
author |
Vidal, Erica Alves Gonzalez |
author_facet |
Vidal, Erica Alves Gonzalez Haimovici, Manuel Hackbart, Vivian Cristina dos Santos |
author_role |
author |
author2 |
Haimovici, Manuel Hackbart, Vivian Cristina dos Santos |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Vidal, Erica Alves Gonzalez Haimovici, Manuel Hackbart, Vivian Cristina dos Santos |
dc.subject.por.fl_str_mv |
Argonauta nodosa Cephalopods Chl a Illex argentinus Loligo sanpaulensis Paralarvae Upwelling |
topic |
Argonauta nodosa Cephalopods Chl a Illex argentinus Loligo sanpaulensis Paralarvae Upwelling |
description |
The distribution of paralarvae and small juvenile cephalopods sampled by a rectangular midwater trawl (opening area 8 m²) over the continental shelf off Cape Santa Marta Grande, southern Brazil (28º09’S–29º56’S) during spring 1989 is discussed. An intrusion of Brazil Current Tropical Water (22ºC; 36.5) separates warm, less-saline water (22ºC; 35.2) from cooler, more-saline water (15ºC; 36.4). Prevailing northeasterly winds led to upwelling of South Atlantic Central Water over the shelf, promoting high Chl a concentrations. Three species constituted 99% of the 628 cephalopods collected: Illex argentinus (n = 540; 4–40 mm mantle length, ML), Argonauta nodosa (n = 46; 2–19 mm ML), and Loligo sanpaulensis (n = 42, 2–21 mm ML). Segregation of I. argentinus juveniles of similar size suggests school formation as small as 10 mm ML. The presence of mature males along with fertilized female A. nodosa indicates mating early in life. There was a consistent and direct link between high plankton production and high densities of juvenile cephalopods through a short and ecologically efficient food chain. The relationship between production, pycnocline intensity, and the density of paralarvae and juveniles revealed suitable conditions for survival and growth during the upwelling season. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010 2012-08-15T21:50:41Z 2012-08-15T21:50:41Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
VIDAL, Erica Alves Gonzalez; HAIMOVICI, Manuel; HACKBART, Vivian Cristina dos Santos. Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil. ICES Journal of Marine Science, v. 67, n. 7, p. 1346-1352, 2010. Disponível em: <http://www.demersais.furg.br/Files/2010.Vidal.etal.paralarvae.primary.production.CIAC.ICES.J.MAr.Sci.pdf>. Acesso em: 30 jun. 2012. http://repositorio.furg.br/handle/1/2369 |
identifier_str_mv |
VIDAL, Erica Alves Gonzalez; HAIMOVICI, Manuel; HACKBART, Vivian Cristina dos Santos. Distribution of paralarvae and small juvenile cephalopods in relation to primary production in an upwelling area off southern Brazil. ICES Journal of Marine Science, v. 67, n. 7, p. 1346-1352, 2010. Disponível em: <http://www.demersais.furg.br/Files/2010.Vidal.etal.paralarvae.primary.production.CIAC.ICES.J.MAr.Sci.pdf>. Acesso em: 30 jun. 2012. |
url |
http://repositorio.furg.br/handle/1/2369 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da FURG (RI FURG) instname:Universidade Federal do Rio Grande (FURG) instacron:FURG |
instname_str |
Universidade Federal do Rio Grande (FURG) |
instacron_str |
FURG |
institution |
FURG |
reponame_str |
Repositório Institucional da FURG (RI FURG) |
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Repositório Institucional da FURG (RI FURG) |
repository.name.fl_str_mv |
Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG) |
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