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Observations On An Isolated Population Of Sagitta Hispida Conant (Chaetognatha) In A Tropical Lagoon System Of Northeast Yucatan (Mexico), Jose N. Alvarez-Cadena, Eduardo Suarez-Morales, Jerry A. Mclelland
Observations On An Isolated Population Of Sagitta Hispida Conant (Chaetognatha) In A Tropical Lagoon System Of Northeast Yucatan (Mexico), Jose N. Alvarez-Cadena, Eduardo Suarez-Morales, Jerry A. Mclelland
Gulf and Caribbean Research
Monthly zooplankton collections were carried out from January to December 1991 at two sampling sites, Cuenca Norte and Bojórquez lagoon, in the Nichupté lagoon system, a partially enclosed network of interconnected waterways located in the northeastern region of the Yucatan Peninsula (Mexico) adjacent to the Caribbean Sea. Only one species of Chaetognatha, Sagitta hispida Conant, was present and was more abundant at Cuenca Norte (total density 450.6 organisms/m3) than at Bojórquez (138.6 organisms/m3). The latter site is smaller, more physically isolated, and more environmentally stressed than the former. From monthly gonadal and length-frequency analyses of 1390 specimens, it was found …