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Hidrobiológica
versão impressa ISSN 0188-8897
Resumo
VELAZQUEZ-VELAZQUEZ, Ernesto; ANZUETO-CALVO, Manuel e 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-Jan-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.
Palavras-chave : Amphioxus; Mexican Pacific; The Joya-Buenavista; new record; Chiapas.