Natural history of Emerita analoga (Stimpson) (Anomura, Hippidae) in a sandy beach of northern Chile

Sediment samplings were carried across the intertidal of the beach at Hornitos, northern Chile (22°26´S) during August and November 1996 and March, July and November 1997 for a study of the reproductive and population biology of Emerita analoga (Stimpson) (Decapoda, Anomura) in a region of the Chile...

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Autores principales:	CONTRERAS,HERALDO, JARAMILLO,EDUARDO, QUIJON,PEDRO
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2000
Materias:	Emerita analoga sandy beach northern Chile
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400013
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spelling	oai:scielo:S0716-078X20000004000132001-04-09Natural history of Emerita analoga (Stimpson) (Anomura, Hippidae) in a sandy beach of northern ChileCONTRERAS,HERALDOJARAMILLO,EDUARDOQUIJON,PEDRO Emerita analoga sandy beach northern Chile Sediment samplings were carried across the intertidal of the beach at Hornitos, northern Chile (22°26´S) during August and November 1996 and March, July and November 1997 for a study of the reproductive and population biology of Emerita analoga (Stimpson) (Decapoda, Anomura) in a region of the Chilean coast characterized by persistent upwelling. The highest abundances of E. analoga occurred during March and December 1997. During November 1996, March and December 1997, the highest abundances occurred below the effluent line, while in July 1996 and August 1997, most of the stages of E. analoga occurred in higher abundances above the effluent line. Ovigerous females were recorded over the entire study period. Juveniles were also present during all sampling months, peaking during March 1997. Body size of ovigerous females varied between 12.6 and 26.4 mm. Fecundity increased significantly with body size of females in all samples analyzed. The analyses of recruitment pattern for males and females suggest the existence of two pulses in the recruitment of E. analoga at Hornitos: one between October and December, and another one between February and March. Growth analyses show that females have growth rates a maximum body sizes higher than males. Comparisons with similar studies carried out at the coast of south central Chile (ca. 39° S), a region where upwelling occurs occasionally, show that E. analoga from this region have similar growth rates but attain a greater maximum body size than in Hornitos. It is concluded that proximity to areas of persistent upwelling seems not to affect life history of E. analoga in northern Chileinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.73 n.4 20002000-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400013en10.4067/S0716-078X2000000400013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Emerita analoga sandy beach northern Chile
spellingShingle	Emerita analoga sandy beach northern Chile CONTRERAS,HERALDO JARAMILLO,EDUARDO QUIJON,PEDRO Natural history of Emerita analoga (Stimpson) (Anomura, Hippidae) in a sandy beach of northern Chile
description	Sediment samplings were carried across the intertidal of the beach at Hornitos, northern Chile (22°26´S) during August and November 1996 and March, July and November 1997 for a study of the reproductive and population biology of Emerita analoga (Stimpson) (Decapoda, Anomura) in a region of the Chilean coast characterized by persistent upwelling. The highest abundances of E. analoga occurred during March and December 1997. During November 1996, March and December 1997, the highest abundances occurred below the effluent line, while in July 1996 and August 1997, most of the stages of E. analoga occurred in higher abundances above the effluent line. Ovigerous females were recorded over the entire study period. Juveniles were also present during all sampling months, peaking during March 1997. Body size of ovigerous females varied between 12.6 and 26.4 mm. Fecundity increased significantly with body size of females in all samples analyzed. The analyses of recruitment pattern for males and females suggest the existence of two pulses in the recruitment of E. analoga at Hornitos: one between October and December, and another one between February and March. Growth analyses show that females have growth rates a maximum body sizes higher than males. Comparisons with similar studies carried out at the coast of south central Chile (ca. 39° S), a region where upwelling occurs occasionally, show that E. analoga from this region have similar growth rates but attain a greater maximum body size than in Hornitos. It is concluded that proximity to areas of persistent upwelling seems not to affect life history of E. analoga in northern Chile
author	CONTRERAS,HERALDO JARAMILLO,EDUARDO QUIJON,PEDRO
author_facet	CONTRERAS,HERALDO JARAMILLO,EDUARDO QUIJON,PEDRO
author_sort	CONTRERAS,HERALDO
title	Natural history of Emerita analoga (Stimpson) (Anomura, Hippidae) in a sandy beach of northern Chile
title_short	Natural history of Emerita analoga (Stimpson) (Anomura, Hippidae) in a sandy beach of northern Chile
title_full	Natural history of Emerita analoga (Stimpson) (Anomura, Hippidae) in a sandy beach of northern Chile
title_fullStr	Natural history of Emerita analoga (Stimpson) (Anomura, Hippidae) in a sandy beach of northern Chile
title_full_unstemmed	Natural history of Emerita analoga (Stimpson) (Anomura, Hippidae) in a sandy beach of northern Chile
title_sort	natural history of emerita analoga (stimpson) (anomura, hippidae) in a sandy beach of northern chile
publisher	Sociedad de Biología de Chile
publishDate	2000
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400013
work_keys_str_mv	AT contrerasheraldo naturalhistoryofemeritaanalogastimpsonanomurahippidaeinasandybeachofnorthernchile AT jaramilloeduardo naturalhistoryofemeritaanalogastimpsonanomurahippidaeinasandybeachofnorthernchile AT quijonpedro naturalhistoryofemeritaanalogastimpsonanomurahippidaeinasandybeachofnorthernchile
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Natural history of Emerita analoga (Stimpson) (Anomura, Hippidae) in a sandy beach of northern Chile

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