On the relationship between squid and the environment: artisanal jigging for Loligo plei at Sao Sebastiao Island (24 degrees S), southeastern Brazil
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2010
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Resumo |
The squid Loligo plei concentrates in the southeastern Brazil Bight, where it has traditionally supported small-scale fisheries around Sao Sebastiao Island (SSI). Sea surface temperature (SST), chlorophyll-a (Chl a), windspeed, wave height, rainfall, and lunar phase are related to fishing records and to the results of a survey of local fishers to investigate how they believe environmental variables might affect catches of L. plei. Daily fishery-dependent data over the years 2005-2009 were obtained from a fishing cooperative and were matched with satellite and meteorological forecast data. Generalized linear models were used to explore the significance of environmental variables in relation to variability in catch and catch per unit effort (cpue). Squid are fished with jigs in water shallower than 20 m, generally where SST is warmer and Chl a and windspeed are lower. Cpue and monthly catches decreased from 2005 to 2008, followed by a slight increase in 2009. The correlations between fishery and environmental data relate well to fishers` oceanological knowledge, underscoring the potential of incorporating such knowledge into evaluations of the fishery. |
Identificador |
ICES JOURNAL OF MARINE SCIENCE, v.67, n.7, p.1353-1362, 2010 1054-3139 http://producao.usp.br/handle/BDPI/31950 10.1093/icesjms/fsq105 |
Idioma(s) |
eng |
Publicador |
OXFORD UNIV PRESS |
Relação |
Ices Journal of Marine Science |
Direitos |
restrictedAccess Copyright OXFORD UNIV PRESS |
Palavras-Chave | #cpue #environmental variables #fishers` knowledge #fishing cooperative #sea surface temperature #small-scale fisheries #South Brazil #time-series #ILLEX-ILLECEBROSUS #SOUTHERN BRAZIL #NORTHWEST ATLANTIC #SCOTTISH WATERS #LIFE-CYCLE #CEPHALOPODA #ABUNDANCE #FISHERY #FORBESI #OMMASTREPHIDAE #Fisheries #Marine & Freshwater Biology #Oceanography |
Tipo |
article proceedings paper publishedVersion |