Effects of substratum and conspecific adults on the development and metamorphosis of Acanthocyclus hassleri (Brachyura: Bellidae) megalopae under laboratory conditions

Success in the pelagic-benthic transition of the meroplankton depends to a great extent on the environmental signals that induce the settlement and metamorphosis. Acanthocyclus hassleri interacts with sessile colonies of Perumytilus purpuratus and Phragmatopoma virgini from its early ontogenetic sta...

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Autores principales:	Barría,Erwin M, Pradenas,Mauricio A, Jara,Carlos G
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2010
Materias:	Decapoda larvae induction environmental cue pelagic-benthic transition
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000300005
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spelling	oai:scielo:S0718-195720100003000052011-02-03Effects of substratum and conspecific adults on the development and metamorphosis of Acanthocyclus hassleri (Brachyura: Bellidae) megalopae under laboratory conditionsBarría,Erwin MPradenas,Mauricio AJara,Carlos G Decapoda larvae induction environmental cue pelagic-benthic transition Success in the pelagic-benthic transition of the meroplankton depends to a great extent on the environmental signals that induce the settlement and metamorphosis. Acanthocyclus hassleri interacts with sessile colonies of Perumytilus purpuratus and Phragmatopoma virgini from its early ontogenetic stages onwards. Thus, we propose that megalopal development and metamorphosis of A. hassleri are influenced by the presence of such species and/or conspecific adults. We evaluated the development time, frequency of metamorphosis, and survival of megalopae in culture, using as substrates P. purpuratus, P. virgini, empty shells and dwellings of both species, a treatment with water exposed to conespecific adults, and a control experiment without stimulus. Megalopal development was significantly shorter in treatments with a substrate. The average delay in metamorphosis was four days. Mortality was slightly lower in treatments without a substrate, but this was not statistically significant. Megalopal development was influenced by the physical conditions of the substrate, but not the survival because the larvae metamorphosed spontaneously in the absence of stimulation. Delay in metamorphosis was lower than in other species; furthermore, the temperature of the culture was lower than the thermal optimum, thus it is likely that this threshold would be even narrower under conditions closer to the optimum. Comparing our results with studies in estuarine and gregarious species, we suggested that the nature of stimulus and larval response could depend on the population density of the adults and the energy involved in the hydrodynamics of habitat.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.45 n.3 20102010-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000300005en10.4067/S0718-19572010000300005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Decapoda larvae induction environmental cue pelagic-benthic transition
spellingShingle	Decapoda larvae induction environmental cue pelagic-benthic transition Barría,Erwin M Pradenas,Mauricio A Jara,Carlos G Effects of substratum and conspecific adults on the development and metamorphosis of Acanthocyclus hassleri (Brachyura: Bellidae) megalopae under laboratory conditions
description	Success in the pelagic-benthic transition of the meroplankton depends to a great extent on the environmental signals that induce the settlement and metamorphosis. Acanthocyclus hassleri interacts with sessile colonies of Perumytilus purpuratus and Phragmatopoma virgini from its early ontogenetic stages onwards. Thus, we propose that megalopal development and metamorphosis of A. hassleri are influenced by the presence of such species and/or conspecific adults. We evaluated the development time, frequency of metamorphosis, and survival of megalopae in culture, using as substrates P. purpuratus, P. virgini, empty shells and dwellings of both species, a treatment with water exposed to conespecific adults, and a control experiment without stimulus. Megalopal development was significantly shorter in treatments with a substrate. The average delay in metamorphosis was four days. Mortality was slightly lower in treatments without a substrate, but this was not statistically significant. Megalopal development was influenced by the physical conditions of the substrate, but not the survival because the larvae metamorphosed spontaneously in the absence of stimulation. Delay in metamorphosis was lower than in other species; furthermore, the temperature of the culture was lower than the thermal optimum, thus it is likely that this threshold would be even narrower under conditions closer to the optimum. Comparing our results with studies in estuarine and gregarious species, we suggested that the nature of stimulus and larval response could depend on the population density of the adults and the energy involved in the hydrodynamics of habitat.
author	Barría,Erwin M Pradenas,Mauricio A Jara,Carlos G
author_facet	Barría,Erwin M Pradenas,Mauricio A Jara,Carlos G
author_sort	Barría,Erwin M
title	Effects of substratum and conspecific adults on the development and metamorphosis of Acanthocyclus hassleri (Brachyura: Bellidae) megalopae under laboratory conditions
title_short	Effects of substratum and conspecific adults on the development and metamorphosis of Acanthocyclus hassleri (Brachyura: Bellidae) megalopae under laboratory conditions
title_full	Effects of substratum and conspecific adults on the development and metamorphosis of Acanthocyclus hassleri (Brachyura: Bellidae) megalopae under laboratory conditions
title_fullStr	Effects of substratum and conspecific adults on the development and metamorphosis of Acanthocyclus hassleri (Brachyura: Bellidae) megalopae under laboratory conditions
title_full_unstemmed	Effects of substratum and conspecific adults on the development and metamorphosis of Acanthocyclus hassleri (Brachyura: Bellidae) megalopae under laboratory conditions
title_sort	effects of substratum and conspecific adults on the development and metamorphosis of acanthocyclus hassleri (brachyura: bellidae) megalopae under laboratory conditions
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000300005
work_keys_str_mv	AT barriaerwinm effectsofsubstratumandconspecificadultsonthedevelopmentandmetamorphosisofacanthocyclushassleribrachyurabellidaemegalopaeunderlaboratoryconditions AT pradenasmauricioa effectsofsubstratumandconspecificadultsonthedevelopmentandmetamorphosisofacanthocyclushassleribrachyurabellidaemegalopaeunderlaboratoryconditions AT jaracarlosg effectsofsubstratumandconspecificadultsonthedevelopmentandmetamorphosisofacanthocyclushassleribrachyurabellidaemegalopaeunderlaboratoryconditions
_version_	1714202299064123392

Effects of substratum and conspecific adults on the development and metamorphosis of Acanthocyclus hassleri (Brachyura: Bellidae) megalopae under laboratory conditions

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