Ecología, distribución y taxonomía de los Ostracoda recientes de la Laguna de Términos, Campeche, México

Autores/as

  • Gustavo A. Morales Instituto de Geología, Universidad Nacional Autónoma de México.

DOI:

https://doi.org/10.22201/10.22201/igl.01855530e.1966.81.99

Palabras clave:

especies eurihalinas, banco de ostiones, paleoecología, Acdnocythereis triangularis, Leptocythere nikraveshae

Resumen

Treinta y nueve especies de ostrácodos Recientes, que representan veintidós géneros, han sido reconocidas en la Laguna de Términos, Campeche, México. Cinco de estas especies son

nuevas: Acdnocythereis triangularis, Leptocythere nikraveshae, Pumilocytheridea ayalai, Xestoleberis rigbyi y Cytherura sandbergi.

Debido a la gran variación en la salinidad del agua, la fauna de ostrácodos está compuesta en su mayoría de especies eurihalinas; sin embargo tres grupos más o menos bien definidos caracterizan (1) el banco de ostiones, (2) la laguna y (3) el delta submarino del interior de la laguna. Con la información disponible no es posible el evaluar con seguridad el efecto que la vegetación sumergida y la turbidez del agua puedan tener en la distribución y abundancia de los ostrácodos. Cerca de la mitad de los ostrácodos colectados en la Laguna de Términos fueron encontrados en Jas estaciones alrededor del contacto de la zona de agua clara con vegetación sumergida y la zona de agua turbia sin vegetación. El ambiente más propicio para el desarrollo de los ostrácodos parece ser el resultado de la combinación de las plantas sumergidas y los materiales nutritivos que son acarreados por los ríos en la parte oeste de la laguna. Se ha confirmado que los requisitos ecológicos varían considerablemente de una a otra especie dentro del mismo género y que el uso de un solo género como indicador de ambiente en trabajos paleocológicos puede resultar en errores.

Citas

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Publicado

1966-01-01