The Afro-Asian cyclopoid Mesocyclops aspericornis (Crustacea: Copepoda) in eastern Mexico with comments on the distribution of exotic copepods
The Afro-Asian freshwater copepod Mesocyclops aspericornis (Daday, 1906), deemed as an exotic species in the Americas, is known to occur disjunctly in Mexico, South America, and the insular Caribbean. Adult females of this species were recorded.from samples collected in the state of Veracruz, on the...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universidad Nacional Autónoma de México
2011-03-01
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| Series: | Revista Mexicana de Biodiversidad |
| Subjects: | |
| Online Access: | https://revista.ib.unam.mx/index.php/bio/article/view/449 |
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| Summary: | The Afro-Asian freshwater copepod Mesocyclops aspericornis (Daday, 1906), deemed as an exotic species in
the Americas, is known to occur disjunctly in Mexico, South America, and the insular Caribbean. Adult females of this
species were recorded.from samples collected in the state of Veracruz, on the Atlantic coast of Mexico.The morphology
of these specimens is identical in most characters to those described or depicted in previous taxonomic accounts. The
3 known Mexican populations belong to the “western” group of M. aspericornis. The subtle morphological variations
among the Mexican populations and their isolation suggest that each could be the result of independent events of
dispersion or introduction via aquaculture. This is the third confirmed report of M. aspericornis in Mexico, but the
first one in the Atlantic side of Middle America. The states of Tabasco and Chiapas harbour 3 of the 4 species of exotic
freshwater copepods known to occur in Mexico. |
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| ISSN: | 1870-3453 2007-8706 |