Observations On The Feeding Habits Of The Shark Heterodontus Francisci Girard 1854 (Chondrichthyes: Heterodontidae), In San Ignacio Lagoon, Baja California Sur, Mexico
Article Sidebar
Published:
Mar 6, 1997
Main Article Content
Abstract
Se revisaron 108 estómagos del tiburón Heterodontus francisci Girard, 1854, capturados en Laguna San Ignacio, Baja California Sur, en muestreos trimestrales de enero de 1992 a febrero de 1993. Esta especie se encuentra en la laguna durante todo el año, disminuyendo su abundancia durante las estaciones de verano y otoño. De acuerdo con el índice de importancia relativa (IIR), el tiburón se alimenta de los siguientes invertebrados bentónicos: gasterópodos (Lucapinella milleri y Calyptraea spp.), crustáceos (Callinectes bellicosus, Penaeus spp. e isópodos), pelecípodos (no identificados), sipuncúlidos (Sipunculus nudus), cefalópodos (Octopus spp.), así como de peces pequeños (Syngnathus auliscus). Heterodontus francisci es un consumidor de tercer orden, ya que es una especie bentónica, predominantemente carnívora, que se caracteriza por ser un depredador selectivo de hábitos nocturnos y/o crepusculares.
A total of 108 stomach contents of horn shark (Heterodontus francisci Girard, 1854) from San Ignacio Lagoon were analyzed. The samples were taken seasonally from January 1992 to February 1993. This species occurred all year round, with low abundance in summer and fall. The index of relative importance (IRI) was used to determine the prey importance. The horn shark feeds mainly on benthic invertebrates, such as gastropods (Lucapinella milleri and Calyptraea spp.), crustaceans (Callinectes bellicosus, Penaeus spp. and isopods), pelecypods (unidentified). sipunculoids (Sipunculus nudus), cephalopods (Octopus spp.), as well as on small fishes (Syngnathus auliscus). This shark is a third-order consumer, because it is a predominantly carnivorous benthic species: it is a selective predator with nocturnal or crepuscular habits.
A total of 108 stomach contents of horn shark (Heterodontus francisci Girard, 1854) from San Ignacio Lagoon were analyzed. The samples were taken seasonally from January 1992 to February 1993. This species occurred all year round, with low abundance in summer and fall. The index of relative importance (IRI) was used to determine the prey importance. The horn shark feeds mainly on benthic invertebrates, such as gastropods (Lucapinella milleri and Calyptraea spp.), crustaceans (Callinectes bellicosus, Penaeus spp. and isopods), pelecypods (unidentified). sipunculoids (Sipunculus nudus), cephalopods (Octopus spp.), as well as on small fishes (Syngnathus auliscus). This shark is a third-order consumer, because it is a predominantly carnivorous benthic species: it is a selective predator with nocturnal or crepuscular habits.
Downloads
Download data is not yet available.
Article Details
How to Cite
Segura-Zarzosa, J., Abitia-Cardenas, L., & Galvan-Magaña, F. (1997). Observations On The Feeding Habits Of The Shark Heterodontus Francisci Girard 1854 (Chondrichthyes: Heterodontidae), In San Ignacio Lagoon, Baja California Sur, Mexico. Ciencias Marinas, 23(1), 111–128. https://doi.org/10.7773/cm.v23i1.771
Issue
Section
Research Article
This is an open access article distributed under a Creative Commons Attribution 4.0 License, which allows you to share and adapt the work, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Figures, tables and other elements in the article are included in the article’s CC BY 4.0 license, unless otherwise indicated. The journal title is protected by copyrights and not subject to this license. Full license deed can be viewed here.