Registrado por

SUAREZ MORALES EDUARDO

Tipo de artículo

Revistas indexadas

Título de artículo

A redescription of Moina hutchinsoni, a rare cladoceran (Branchio-poda: Anomopoda) found in remnants of a Mexican saline lake, with notes on its life history.

Volúmen

24

Número de registro

187

Campo

CIENCIAS DE LA VIDA

Disciplina

BIOLOGIA ANIMAL Y ZOOLOGIA

Subdisciplina

CRECIMIENTO DE LOS ANIMALES

Resumen

Mooina hutchinsoni BREHM, 1937, A NEARCTIC ANOMOPOD CLADOCERAN, WAS OBSERVED IN SHALLOW EPHEMERAL PONDS OF THE FORMER TEXCOCO LAKE, NEAR MEXICO CITY, MEXICO. THE TYPE MATERIAL, FROM LAKE WINNEMUCCA, NEVADA, WAS CONSIDERED LOST; ADDITIONAL TOPOTYPIC MATERIAL COULD NOT BE OBTAINED FROM THAT LOCALITY BECAUSE THE SITE IS COMPLETELY DRY. THE SPECIES IS REDESCRIBED HEREIN BASED ON SPECIMENS FROM TEXCOCO LAKE AND BORDER LAKE, NEBRASKA. SPECIMENS FROM THESE LOCALITIES WERE COMPARED TO STUDY THE MORPHOLOGICAL VARIABILITY OF THIS SPECIES; DIFFERENCES WERE FOUND IN THE CUTICULAR HAIR PATTERNS ON HEAD, BODY, ANTENNULES, AND SECOND ANTENNAE, IN THE NUMBER OF FEATHERED SETAE ON THE POSTABDOMEN, AND IN THE STRUCTURE OF PECTENS IN CLAWS. THE LIFE CYCLE OF THIS RARE SPECIES WAS ANALYZED IN THE LABORATORY. IN CULTURE, DIET CONSISTED OF THE MICROALGAE Ankistrodemus falcatus (FRESHWATER) AND Chlorella sp. (MARINE); BOTH ALGAE WERE CONSUMED BY THE CLADOCERAN. CULTURE TEMPERATURE RANGED BETWEEN 15º AND 20ºC, AND SALINITY RANGE WAS 5-25 g L-1. CULTURED SPECIMENS WERE SIGNIFICANTLY LARGER THAN THOSE FROM FIELD POPULATIONS. LOWER TEMPERATURES CORRELATED WITH A DELAYED FIRST REPRODUCTION AND WITH A LONGER INACTIVE TIME BETWEEN SUCCEEDING CLUTCHES.

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Fuente

Sistema Estatal de Información y Documentación Científica y Tecnológica

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13