
Con el objetivo de evaluar los efectos a largo plazo de variables ambientales en la población de camarón rosado Farfantepenaeus duorarum en la Sonda de Campeche, al sur del Golfo de México, se analizaron los patrones de variación del reclutamiento, la salinidad y la temperatura superficial de 1969 a 1991. El reclutamiento muestra una clara tendencia decreciente desde la década de los años setenta, con una disminución acentuada desde los años ochenta. La temperatura superficial muestra una tendencia al aumento, particularmente desde 1972. La diferencia entre la temperatura a mediados de los setenta y finales de los ochenta fue de 0.5 °C. A lo largo del periodo de estudio la salinidad disminuyó. En el largo plazo, el reclutamiento muestra correlación negativa con la temperatura superficial y positiva con la salinidad. Los efectos de estas variables son estadísticamente significativos, explicando respectivamente el 52 % y 55 % de la variación del reclutamiento y, aunque no implican relaciones causa-efecto, sugieren simultaneidad de cambio.
We studied the long term effects of two environmental variables, salinity and surface temperature, on the pink shrimp (Farfantepenaeus duorarum) population in the southern Gulf of Mexico, considering the relationship between recruiting and the concurrent shrimp stock depletion of the last two decades. Our data were collected from 1969 to 1991. Recruitment has been clearly declining, particularly in the 1970s, with an accentuated drop since the 1980s. Sea surface temperatures have steadily risen, particularly since 1972. The temperature difference between the mid 1970s and the late 1980s is 0.5 °C. Salinity decreased throughout the period. From a long term perspective, recruitment is negatively correlated with temperature and positively correlated with salinity. The effects of temperature and salinity are statistically significant, explaining 52 % and 55 % of the variation in recruitment, respectively.
Penaeidae, Temperature, Animals, Sodium Chloride, Mexico
Penaeidae, Temperature, Animals, Sodium Chloride, Mexico
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