Resumo

GARCIA-HERNANDEZ, Víctor; ORDONEZ-LOPEZ, Uriel; HERNANDEZ-VAZQUEZ, Tania  e  ALVAREZ-CADENA, José Nicolás. Fish larvae and juveniles checklist (Pisces) from the northern Yucatán Peninsula, Mexico, with 39 new records for the region. Rev. Mex. Biodiv. [online]. 2009, vol.80, n.1, pp.85-94. ISSN 2007-8706.

A taxonomic checklist for fish larvae and juveniles occurring at Yalahau (June 2001-May 2002), Celestún (July 1994-June 1995), Chelem (July 1999-June 2000) and Río Lagartos (November 1996- October 1997) lagoons located in the northern part of the Yucatán Peninsula is presented. Sampling was carried out for 5 minutes using a zooplankton net for larvae, while a Renfro net was hauled for 50 m2 to capture juveniles. This work aims to provide the current state of the taxonomic composition and general distribution for 34 377 fish larvae and juveniles. Our samples represent 2 classes, 17 orders, 45 families, 83 genera and 117 species were caught, including 39 new records, where 24 have been found only in the Gulf of Mexico, 3 in the Caribbean Sea, and 90 are common to both regions. This study updates and increases the number of species in larval and juvenile stages previously reported. It was found that early reef larval stages were more abundant towards the East of the Yucatán Peninsula and less to the West. The high number of shared species (90) suggests that the northern region of the Yucatán Peninsula is a transition zone for fish larvae and juveniles between the Gulf of Mexico and the Caribbean Sea.

Palavras-chave : fish larvae and juvenile checklist; Yucatán Peninsula; Mexico.

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