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Abstract:

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.

Registro:

Documento: Artículo
Título:Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle channel, Argentina
Autor:Pérez-Barros, P.; Tapella, F.; Romero, M.C.; Calcagno, J.A.; Lovrich, G.A.
Filiación:Universidad de Buenos Aires, Facultad Ciencias Exactas/Naturales, Depto. Ecologia,Genetica/Evolucion, Buenos Aires C1428EHA, Argentina
Consejo Nac. Invest. Cie./Tecnicas, Ctro Austral Invest Cientificas, Tierra del Fuego, Ushuaia V9410BFD, Argentina
Palabras clave: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
Año:2004
Volumen:68
Número:2
Página de inicio:237
Página de fin:246
DOI: http://dx.doi.org/10.3989/scimar.2004.68n2237
Título revista:Scientia Marina
Título revista abreviado:Sci. Mar.
ISSN:02148358
CODEN:SCIME
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v68_n2_p237_PerezBarros

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Citas:

---------- APA ----------
Pérez-Barros, P., Tapella, F., Romero, M.C., Calcagno, J.A. & Lovrich, G.A. (2004) . Benthic decapod crustaceans associated with captures of Munida spp. (Decapoda: Anomura) in the Beagle channel, Argentina. Scientia Marina, 68(2), 237-246.
http://dx.doi.org/10.3989/scimar.2004.68n2237
---------- CHICAGO ----------
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" . Scientia Marina 68, no. 2 (2004) : 237-246.
http://dx.doi.org/10.3989/scimar.2004.68n2237
---------- MLA ----------
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" . Scientia Marina, vol. 68, no. 2, 2004, pp. 237-246.
http://dx.doi.org/10.3989/scimar.2004.68n2237
---------- VANCOUVER ----------
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. Sci. Mar. 2004;68(2):237-246.
http://dx.doi.org/10.3989/scimar.2004.68n2237