Amphidromy in shrimps: a life cycle between rivers and the sea

Amphidromy is a diadromous life history pattern, common in tropical and subtropical freshwater caridean shrimps, in which adults live, breed and spawn small-sized embryos in freshwater but have extended larval development (ELD) in marine waters. Most completely freshwater species spawn large embryos...

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Autor principal:	Bauer,Raymond T
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2013
Materias:	Caridea diadromy larvae juveniles migration streams rivers
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000400002
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spelling	oai:scielo:S0718-560X20130004000022014-04-23Amphidromy in shrimps: a life cycle between rivers and the seaBauer,Raymond T Caridea diadromy larvae juveniles migration streams rivers Amphidromy is a diadromous life history pattern, common in tropical and subtropical freshwater caridean shrimps, in which adults live, breed and spawn small-sized embryos in freshwater but have extended larval development (ELD) in marine waters. Most completely freshwater species spawn large embryos with either direct or abbreviated larval development (ALD). An important benefit of amphidromy is dispersal among river systems via marine larvae, which increases their access to alternative habitats. Thus, amphidromous species have much broader geographic distributions than closely related completely freshwater ones with ALD. ALD and freshwater ELD species appear to have evolved from amphidromous species with marine ancestors. Delivery of larvae to the sea in many amphidromous species is accomplished by upstream hatching and river drift of larvae to the sea. In other species, the females themselves apparently migrate down to marine waters to spawn. After development, the postlarvae must find a river mouth and migrate upstream to the adult habitat. Migrations occur at night, with juveniles swimming or crawling along the river or stream bank. Larvae are released during the wet or flood season of the year, while juvenile migrations take place during the dry or low-flow season. Both larval downstream and juvenile upstream movements are disrupted by human impacts such as dams and other forms of river control. Although much progress has been made in understanding the evolution and ecology of amphidromy, research is still needed on all aspects of shrimp amphidromy, especially in Latin America with its diverse freshwater shrimp fauna.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.41 n.4 20132013-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000400002en103856/vol41-issue4-fulltext-2
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Caridea diadromy larvae juveniles migration streams rivers
spellingShingle	Caridea diadromy larvae juveniles migration streams rivers Bauer,Raymond T Amphidromy in shrimps: a life cycle between rivers and the sea
description	Amphidromy is a diadromous life history pattern, common in tropical and subtropical freshwater caridean shrimps, in which adults live, breed and spawn small-sized embryos in freshwater but have extended larval development (ELD) in marine waters. Most completely freshwater species spawn large embryos with either direct or abbreviated larval development (ALD). An important benefit of amphidromy is dispersal among river systems via marine larvae, which increases their access to alternative habitats. Thus, amphidromous species have much broader geographic distributions than closely related completely freshwater ones with ALD. ALD and freshwater ELD species appear to have evolved from amphidromous species with marine ancestors. Delivery of larvae to the sea in many amphidromous species is accomplished by upstream hatching and river drift of larvae to the sea. In other species, the females themselves apparently migrate down to marine waters to spawn. After development, the postlarvae must find a river mouth and migrate upstream to the adult habitat. Migrations occur at night, with juveniles swimming or crawling along the river or stream bank. Larvae are released during the wet or flood season of the year, while juvenile migrations take place during the dry or low-flow season. Both larval downstream and juvenile upstream movements are disrupted by human impacts such as dams and other forms of river control. Although much progress has been made in understanding the evolution and ecology of amphidromy, research is still needed on all aspects of shrimp amphidromy, especially in Latin America with its diverse freshwater shrimp fauna.
author	Bauer,Raymond T
author_facet	Bauer,Raymond T
author_sort	Bauer,Raymond T
title	Amphidromy in shrimps: a life cycle between rivers and the sea
title_short	Amphidromy in shrimps: a life cycle between rivers and the sea
title_full	Amphidromy in shrimps: a life cycle between rivers and the sea
title_fullStr	Amphidromy in shrimps: a life cycle between rivers and the sea
title_full_unstemmed	Amphidromy in shrimps: a life cycle between rivers and the sea
title_sort	amphidromy in shrimps: a life cycle between rivers and the sea
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2013000400002
work_keys_str_mv	AT bauerraymondt amphidromyinshrimpsalifecyclebetweenriversandthesea
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Amphidromy in shrimps: a life cycle between rivers and the sea

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