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FECUNDITY AND DISTRIBUTION OF FRESHWATER PRAWNS OF THE GENUS MACROBRACHIUM IN THE HUITZILAPAN RIVER, VERACRUZ, MEXICO

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[Three aspects of the reproductive biology (fecundity, size of ovigerous females, and egg size) of the freshwater prawns Macrobrachium acanthurus, M. heterochirus, and M. carcinus, in the Huitzilapan river, Veracruz, Mexico, were studied. Adults of Macrobrachium acanthurus and M. carcinus occupied the lower part of the river in the estuarine area, while reproductive M. heterochirus were distributed from 105 to 535 m altitude. Macrobrachium acanthurus exhibited significant differences in fecundity, mean size of ovigerous females, and egg size, according to the time of year. For M. heterochirus, egg size varied depending on the time of year and on their position in the river. Finally, for M. carcinus, egg size varied only depending on the time of year.

Tres aspectos de la biología reproductiva (fecundidad, talla de hembras ovígeras y tamaño de huevo) de los camarones de agua dulce Macrobrachium acanthurus, M. heterochirus y M. carcinus, en el río Huitzilapan, Veracruz, Mexico, fueron estudiados. Adultos de Macrobrachium acanthurus y M. carcinus ocuparon las partes bajas del río en la zona estuarina, mientras que organismos reproductivos de M. heterochirus se distribuyeron de los 105 a los 535 m de altitud. Macrobrachium acanthurus exhibió diferencias significativas debidas a la época del año en fecundidad, talla promedio de hembras ovígeras y tamaño de huevo. Para M. heterochirus el tamaño del huevo varió dependiendo de la época del año y de la posición dentro del río. Finalmente, para M. carcinus , el tamaño del huevo varió solamente debido a la época del año., Three aspects of the reproductive biology (fecundity, size of ovigerous females, and egg size) of the freshwater prawns Macrobrachium acanthurus, M. heterochirus, and M. carcinus, in the Huitzilapan river, Veracruz, Mexico, were studied. Adults of Macrobrachium acanthurus and M. carcinus occupied the lower part of the river in the estuarine area, while reproductive M. heterochirus were distributed from 105 to 535 m altitude. Macrobrachium acanthurus exhibited significant differences in fecundity, mean size of ovigerous females, and egg size, according to the time of year. For M. heterochirus, egg size varied depending on the time of year and on their position in the river. Finally, for M. carcinus, egg size varied only depending on the time of year.

Tres aspectos de la biología reproductiva (fecundidad, talla de hembras ovígeras y tamaño de huevo) de los camarones de agua dulce Macrobrachium acanthurus, M. heterochirus y M. carcinus, en el río Huitzilapan, Veracruz, Mexico, fueron estudiados. Adultos de Macrobrachium acanthurus y M. carcinus ocuparon las partes bajas del río en la zona estuarina, mientras que organismos reproductivos de M. heterochirus se distribuyeron de los 105 a los 535 m de altitud. Macrobrachium acanthurus exhibió diferencias significativas debidas a la época del año en fecundidad, talla promedio de hembras ovígeras y tamaño de huevo. Para M. heterochirus el tamaño del huevo varió dependiendo de la época del año y de la posición dentro del río. Finalmente, para M. carcinus , el tamaño del huevo varió solamente debido a la época del año.]

Affiliations: 1: Laboratorio de Fisiología y Comportamiento Animal, Departamento del Hombre y su Ambiente, Universidad Autónoma Metropolitana-Xochimilco, Apartado Postal 70-458, Mexico 04510, D.F., Mexico; 2: Colección Nacional de Crustáceos, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-153, Mexico 04510, D.F., Mexico; 3: Laboratorio de Parasitología Marina, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Apartado Postal 70-305, Mexico 04510, D.F., Mexico

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/content/journals/10.1163/156854001505442
2001-01-01
2016-12-11

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