Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle Channel, Argentina

Authors

  • Patricia Pérez Barros Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Depto. Ecología, Genética y Evolución - Consejo Nacional de Investigaciones Científicas y Técnicas, Centro Austral de Investigaciones Científicas, CADIC
  • Federico Tapella Consejo Nacional de Investigaciones Científicas y Técnicas, Centro Austral de Investigaciones Científicas, CADIC
  • M. Carolina Romero Consejo Nacional de Investigaciones Científicas y Técnicas, Centro Austral de Investigaciones Científicas, CADIC
  • Javier A. Calagno Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Depto. Ecología, Genética y Evolución
  • Gustavo A. Lovrich Consejo Nacional de Investigaciones Científicas y Técnicas, Centro Austral de Investigaciones Científicas, CADIC

DOI:

https://doi.org/10.3989/scimar.2004.68n2237

Keywords:

decapod crustaceans, benthos, species composition, distribution, Magellan region

Abstract


Benthic decapod crustacean assemblages in the Beagle Channel are dominated by the galatheid crabs Munidasubrugosa and Munida gregaria. This study deals with the bathymetric and spatial distribution, density and diversity of the assemblage of decapod species that co-occur with Munida spp. in the Beagle Channel. A total of 131 samples were obtained using an epibenthic trawl from February 1999 to December 2000. They were taken monthly from two depth strata separated by the 40 m isobath (range: 4-262 m), and from three different sites: Bahía Lapataia, Ushuaia and Punta Segunda. Sixteen of the 36 recorded species of decapod crustaceans from the Beagle Channel were caught. Munidasubrugosa and M. gregaria contributed 94% to the total decapod material. Of the remaining 6%, Austropandalusgrayi (Caridea) was the most abundant species, constituting 43% of the non-galatheid decapod fraction. Some species, namely Paguruscomptus and Eurypodius spp., were characteristic of shallow waters (<40 m), while others like Campylonotus semistriatus occurred in deeper waters (> 40 m). The average density and diversity of non-galatheid decapods varied with depth and location. Decapod diversity correlated positively with the density of algae and polychaete tubes. The influence of three-dimensional bottom structure on decapod diversity in the Beagle Channel is discussed.

Downloads

Download data is not yet available.

Downloads

Published

2004-06-30

How to Cite

1.
Pérez Barros P, Tapella F, Romero MC, Calagno JA, Lovrich GA. Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle Channel, Argentina. scimar [Internet]. 2004Jun.30 [cited 2020Dec.1];68(2):237-46. Available from: http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/363

Issue

Section

Articles

Similar Articles

You may also start an advanced similarity search for this article.