Journal Article

Growth and mortality of transient shrimp populations (<i>Farfantepenaeus</i> spp.) in a coastal lagoon of Mexico: role of the environment and density-dependence

Roberto Pérez-Castañeda and Omar Defeo

in ICES Journal of Marine Science

Published on behalf of ICES/CIEM

Volume 62, issue 1, pages 14-24
Published in print January 2005 | ISSN: 1054-3139
Published online January 2005 | e-ISSN: 1095-9289 | DOI: http://dx.doi.org/10.1016/j.icesjms.2004.10.005
Growth and mortality of transient shrimp populations (Farfantepenaeus spp.) in a coastal lagoon of Mexico: role of the environment and density-dependence

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The influence of environmental (temperature, salinity, aquatic vegetation) and density-dependent (abundance of recruits) factors on growth and mortality of four Farfantepenaeus species were evaluated during their period of estuarine residence, through a 2-year field study at Celestun lagoon, Mexico. Growth rates of the three most abundant species (F. brasiliensis, F. duorarum, F. notialis) were positively related with temperature and aquatic vegetation biomass, whereas some significant relationships between environmental factors and mortality rates were also demonstrated. Our results suggest that density-dependent processes regulate growth and mortality in these shrimp populations. Density-dependent mortality was also suggested by a strong compensatory relationship between recruits and juveniles. We conclude that population dynamics of Farfantepenaeus shrimps during their estuarine phase seem to be driven by the combined forces of density-dependent and environmental factors operating together.

Keywords: coastal lagoon; density-dependence; Farfantepenaeus; juvenile shrimps; Penaeid; population dynamics

Journal Article.  5029 words.  Illustrated.

Subjects: Environmental Science ; Marine and Estuarine Biology

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