%0 Journal Article
%T Distribution of some Calanoida (Crustacea: Copepoda) from the Yucat¨¢n Peninsula, Belize and Guatemala
%A Gerd-Oltmann Brandorff
%J Revista de Biolog¨ªa Tropical
%D 2012
%I Universidad de Costa Rica
%X Southern Mexico and Central America have many water bodies of different morphology and water chemistry with an interesting zooplankton fauna, originating from North or South America. A set of 63 samples, taken in 2005 and 2008, from water bodies of the Yucatan Peninsula karst, Belize and Guatemala, were studied for the content of calanoid copepods. Old and recent literature was used to determine animals to species level. Drawings were prepared with a microscope and a camera lucida. A total of 32 samples with totally six species contained calanoid copepods: one estuarine pseudodiaptomid and five freshwater diaptomids. Pseudodiaptomus marshi was found at different salinities. It is confirmed that the commonest diaptomids in the Yucatan Peninsula are Arctodiaptomus dorsalis and Mastigodiaptomus nesus. The former was also recorded from Lake Amatitlan. Mastigodiaptomus nesus is as widespread as A. dorsalis but it is absent from the Lake Peten area in Guatemala. Mastigodiaptomus reidae was found in two shallow habitats, these specimens differ from those from the type locality by having a set of peculiar large spine-like processes on the last thoracic and the urosome segments of the females. Leptodiaptomus siciloides was found only in Lake Ayarza with high salinity. Prionodiaptomus colombiensis occurred in the highlands of Guatemala in Lago de G¨¹ija and in the Peten area in Laguna Sacpuy. We contributed with our occurrence records to a better knowledge of the geographic distribution of some calanoid copepods. Morphological findings in some species are of value for taxonomic differentiation between species. El sur de M¨¦xico y Am¨¦rica Central tienen varios cuerpos de agua con diferente morfolog¨ªa, composici¨®n qu¨ªmica y una interesante fauna de zooplancton procedente de Am¨¦rica del Norte o del Sur. Un grupo de 63 muestras, fueron tomadas en 2005 y 2008 para conocer la cantidad de cop¨¦podos calanoides en los cuerpos de agua del karst Pen¨ªnsula de Yucat¨¢n, Belice y Guatemala. Se utiliz¨® literatura antigua y reciente para la identificaci¨®n de los espec¨ªmenes a nivel de especie y se preparon dibujos con un microscopio y una c¨¢mara l¨²cida. En un total de 32 muestras se obtuvieron seis especies de cop¨¦podos calanoides: un pseudodiaptomidos estuarino y cinco diaptomidos de agua dulce. Pseudodiaptomus marshi fue encontrado a diferentes salinidades. Adem¨¢s, se confirm¨® que los diaptomidos m¨¢s comunes en la Pen¨ªnsula de Yucat¨¢n fueron: Arctodiaptomus dorsalis y Mastigodiaptomus nesus. El primero se registr¨® tambi¨¦n en el lago de Amatitl¨¢n. Mastigodiaptomus nesus est¨¢ ampli
%K Am¨¦rica Central
%K zooplancton
%K cop¨¦podos calanoides
%K Pseudodiaptomidae
%K Diaptomidae
%K distribuci¨®n geogr¨¢fica
%K Central America
%K zooplankton
%K calanoid copepods
%K Pseudodiaptomidae
%K Diaptomidae
%K geographic distribution
%U http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442012000100013