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Size structure and sex composition of Eurypodius latreillii Guérin, 1828 (Brachyura) and Pagurus comptus White, 1847 (Anomura) in southern Chile
Soto, R.; Quiroga, E.; Vargas, M.; Navarette, N. (1999). Size structure and sex composition of Eurypodius latreillii Guérin, 1828 (Brachyura) and Pagurus comptus White, 1847 (Anomura) in southern Chile. Sci. Mar. (Barc.) 63(S1): 339-345. https://dx.doi.org/10.3989/scimar.1999.63s1339
In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358; e-ISSN 1886-8134
Also appears in:
Arntz, W.E.; Ríos, C. (Ed.) (1999). Magellan-Antarctic: Ecosystems that drifted apart. Scientia Marina (Barcelona), 63(Supl. 1). Institut de Ciències del Mar: Barcelona. 518 pp. https://dx.doi.org/10.3989/scimar.1999.63s1, more
Peer reviewed article  
Available in  Authors 
    Vlaams Instituut voor de Zee: Open access 372987 [ download pdf ]
Keyword
    Marine/Coastal
Author keywords
    Sex composition, size structure, decapods, southern Chile
Authors  Top 
  • Soto, R.
  • Quiroga, E.
  • Vargas, M.
  • Navarette, N.
Abstract
    The decapod crustaceans Eurypodius latreillii (Brachyura) and Pagurus comptus (Paguridae) were the most frequently occurring species in Agassiz trawl (AGT) samples obtained during the Chilean - German - Italian Victor Hensen Expedition in the Straits of Magellan and south of the Beagle Channel. Sex composition and length structure aspects were studied using the material from 15 stations in the two areas, which comprised 773 specimens of E. latreillii and 647 P. comptus. The size frequency of both species was characterized by the presence of small individuals in shallow waters. The sex composition varied with depth, indicating a dominance of E. latreillii females in deep waters, whereas no such pattern was observed in P. comptus. These differences may be caused by epizoites of E. latreillii and the availability of vacant gastropod shells for P. comptus, in addition to geographical aspects and life-cycle patterns of these species.
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