Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle channel, Argentina
Benthic decapod crustacean assemblages in the Beagle Channel are dominated by the galatheid crabs Munida subrugosa 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 Bea...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_02148358_v68_n2_p237_PerezBarros |
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todo:paper_02148358_v68_n2_p237_PerezBarros2023-10-03T15:10:15Z Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle channel, Argentina Pérez-Barros, P. Tapella, F. Romero, M.C. Calcagno, J.A. Lovrich, G.A. Benthos Decapod crustaceans Distribution Magellan region Species composition benthos community composition crustacean depth population density spatial distribution species diversity Beagle Channel South America algae Anomura Austropandalus grayi Campylonotidae Campylonotidae Campylonotus Campylonotus semistriatus Caridea Crustacea Decapoda Decapoda (Crustacea) Eurypodius Galatheidae Galatheidae Majidae Majidae Munida Munida gregaria Munida subrugosa Munida subrugosa Paguridae Paguridae Pagurus Pagurus comptus Pandalidae Pandalidae Polychaeta Benthic decapod crustacean assemblages in the Beagle Channel are dominated by the galatheid crabs Munida subrugosa 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. Munida subrugosa and M. gregaria contributed 94% to the total decapod material. Of the remaining 6%, Austropandalus grayi (Caridea) was the most abundant species, constituting 43% of the non-galatheid decapod fraction. Some species, namely Pagurus comptus 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02148358_v68_n2_p237_PerezBarros |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Benthos Decapod crustaceans Distribution Magellan region Species composition benthos community composition crustacean depth population density spatial distribution species diversity Beagle Channel South America algae Anomura Austropandalus grayi Campylonotidae Campylonotidae Campylonotus Campylonotus semistriatus Caridea Crustacea Decapoda Decapoda (Crustacea) Eurypodius Galatheidae Galatheidae Majidae Majidae Munida Munida gregaria Munida subrugosa Munida subrugosa Paguridae Paguridae Pagurus Pagurus comptus Pandalidae Pandalidae Polychaeta |
| spellingShingle |
Benthos Decapod crustaceans Distribution Magellan region Species composition benthos community composition crustacean depth population density spatial distribution species diversity Beagle Channel South America algae Anomura Austropandalus grayi Campylonotidae Campylonotidae Campylonotus Campylonotus semistriatus Caridea Crustacea Decapoda Decapoda (Crustacea) Eurypodius Galatheidae Galatheidae Majidae Majidae Munida Munida gregaria Munida subrugosa Munida subrugosa Paguridae Paguridae Pagurus Pagurus comptus Pandalidae Pandalidae Polychaeta Pérez-Barros, P. Tapella, F. Romero, M.C. Calcagno, J.A. Lovrich, G.A. Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle channel, Argentina |
| topic_facet |
Benthos Decapod crustaceans Distribution Magellan region Species composition benthos community composition crustacean depth population density spatial distribution species diversity Beagle Channel South America algae Anomura Austropandalus grayi Campylonotidae Campylonotidae Campylonotus Campylonotus semistriatus Caridea Crustacea Decapoda Decapoda (Crustacea) Eurypodius Galatheidae Galatheidae Majidae Majidae Munida Munida gregaria Munida subrugosa Munida subrugosa Paguridae Paguridae Pagurus Pagurus comptus Pandalidae Pandalidae Polychaeta |
| description |
Benthic decapod crustacean assemblages in the Beagle Channel are dominated by the galatheid crabs Munida subrugosa 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. Munida subrugosa and M. gregaria contributed 94% to the total decapod material. Of the remaining 6%, Austropandalus grayi (Caridea) was the most abundant species, constituting 43% of the non-galatheid decapod fraction. Some species, namely Pagurus comptus 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. |
| format |
JOUR |
| author |
Pérez-Barros, P. Tapella, F. Romero, M.C. Calcagno, J.A. Lovrich, G.A. |
| author_facet |
Pérez-Barros, P. Tapella, F. Romero, M.C. Calcagno, J.A. Lovrich, G.A. |
| author_sort |
Pérez-Barros, P. |
| title |
Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle channel, Argentina |
| title_short |
Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle channel, Argentina |
| title_full |
Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle channel, Argentina |
| title_fullStr |
Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle channel, Argentina |
| title_full_unstemmed |
Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle channel, Argentina |
| title_sort |
benthic decapod crustaceans associated with captures of munida spp. (decapoda: anomura) in the beagle channel, argentina |
| url |
http://hdl.handle.net/20.500.12110/paper_02148358_v68_n2_p237_PerezBarros |
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