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Hidrobiológica

versión impresa ISSN 0188-8897

Resumen

VELAZQUEZ-VELAZQUEZ, Ernesto; ANZUETO-CALVO, Manuel  y  DOMINGUEZ-CISNEROS, Sara E.. First record of Branchiostoma californiense (Cephalochordata: Branchiostomatidae) in a lagoon-estuarine system from Chiapas, Mexico. Hidrobiológica [online]. 2021, vol.31, n.1, pp.107-110.  Epub 16-Ene-2023. ISSN 0188-8897.  https://doi.org/10.24275/uam/izt/dcbs/hidro/2021v31n1/velazquez.

Background:

Amphioxi (Cephalochordata), are a group of marine organisms of great relevance and interest in evolutionary studies, due to their phylogenetic position; inhabit the sandy bottoms of coastal waters around the world. Two species Branchiostoma elongatum and B. californiense are widely distributed throughout the Tropical Eastern Pacific.

Objectives:

The objective of this work is to document the occurrence of Branchiostoma californiense, in a lagoon-estuarine system from Chiapas, Mexico.

Methods:

The specimens were collected from the sandy bottom between 50 and 90 cm deep, using a stainless-steel sieve in the estuarine channel of the estuarine-lagoon system La Joya-Buenavista.

Results:

A total of 19 specimens of B. californiense were collected. The specimens collected were juvenile stages less than 10mm in length (3.1-5.9 mm).

Conclusions:

These records indicate the first record of this species in the inland waters of Chiapas and represent the southernmost records of this species in the Mexican Pacific.

Palabras llave : Amphioxus; Mexican Pacific; The Joya-Buenavista; new record; Chiapas.

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