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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad de Costa Rica
2007
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| Online Access: | https://www.redalyc.org/articulo.oa?id=44909918 https://www.redalyc.org/journal/449/44909918/ https://www.redalyc.org/journal/449/44909918/html/ https://www.redalyc.org/journal/449/44909918/44909918.epub https://www.redalyc.org/journal/449/44909918/movil |
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Table of Contents:
- Population biology of the burrowing shrimp Callichirus seilacheri (Decapoda: Callianassidae) in northern Chile Ingo S. Wehrtmann Patricio Hernáez Biología Pacific reproduction ghost shrimp South America burrow density The life history of ghost shrimps, known for their role in shaping community structures in shallowwater habitats, is poorly studied in species occurring along the coasts of the South American Pacific. Here wepresent ecological information concerning Callichirus seilacheri based upon individuals collected from Januaryto December 2003 in Las Machas beach, northern Chile. Burrow densities varied between 1.4 and 20.2 burrows /0.25 m2, and was highest during summer (18.2 burrows / 0.25m2). The sex proportion was 1:1 during most of thestudy period; however, females outnumbered males in January and September. Males reached a larger maximumsize than females (27.1 and 24.0 mm CL, respectively). The presence of juveniles was restricted principally tothe time between February and May. Sexual maturity was reached at a size of 20.8 mm (males) and 18.1 mmCL (females). The main breeding period lasted from autumn to winter (May to August, peaking in June), andco-occurred with decreasing water temperatures and the presence of a sediment layer covering the burrows. Rev.Biol. Trop. 55 (Suppl. 1): 141-152. Epub 2007 June, 29. 2007 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44909918 https://www.redalyc.org/journal/449/44909918/ https://www.redalyc.org/journal/449/44909918/html/ https://www.redalyc.org/journal/449/44909918/44909918.epub https://www.redalyc.org/journal/449/44909918/movil en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.55