Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura)

Autores
McLay, Colin L.; Sal Moyano, María Paz
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The derived condition in Brachyura is exhibited when mating is not linked to moulting (i.e. hard-shell mating). Grapsoid and ocypodid crabs have this type of mating wherein females become receptive and have mobile vulvae covered by operculae without moulting. The mobility of the operculae has been attributed to a decalcification process although it has never been demonstrated experimentally. We described the morphology of the vulvae (operculum and hinge) and measure calcium levels employing X-ray Energy Dispersive Spectroscopy of the intermoult immature and mature female of several different species of grapsoid crabs: Austrohelice crassa, Cyclograpsus lavauxi, Hemigrapsus crenulatus, Hemigrapsus sexdentatus (Varunidae), Guinusia chabrus (Plagusiidae), Leptograpsus variegatus (Grapsidae), and the ocypodid Hemiplax hirtipes (Macrophthalmidae). We measured calcium levels during a reproductive cycle in the case of H. sexdentatus. In all the studied species the opercula and hinge had lower calcium levels compared to the adjacent exoskeleton, and the hinge showed the lowest values of calcium (9.7 and 40.8 weight%, respectively). Immature and adult crabs showed that the distribution of calcium remains the same after the pubertal moult as it was before. Furthermore, in H. sexdentatus, hinge calcium levels do not change during the female reproductive cycle when females become receptive. It is suggested that an alternative mechanism, not related to decalcification, could be involved in promoting mobility of the hinge in receptive females of these species. We need to modify our ideas of the processes involved in female receptivity in all these crabs with an operculate vulva and hence mate attraction. Answers to these questions are the key to understanding how the linkage of mating to moulting was broken.
Fil: McLay, Colin L.. University Of Canterbury; Nueva Zelanda
Fil: Sal Moyano, María Paz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Materia
Austrohelice
Copulation
Cyclograpsus
Decalcification
Guinusia
Hard-Shell Mating
Hemigrapsus
Hemiplax
Hinge Linemobility
Leptograpsus
Macrophthalmidae
Mate Attraction
Moulting
Varunidae
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/63526

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network_name_str CONICET Digital (CONICET)
spelling Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura)McLay, Colin L.Sal Moyano, María PazAustroheliceCopulationCyclograpsusDecalcificationGuinusiaHard-Shell MatingHemigrapsusHemiplaxHinge LinemobilityLeptograpsusMacrophthalmidaeMate AttractionMoultingVarunidaehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The derived condition in Brachyura is exhibited when mating is not linked to moulting (i.e. hard-shell mating). Grapsoid and ocypodid crabs have this type of mating wherein females become receptive and have mobile vulvae covered by operculae without moulting. The mobility of the operculae has been attributed to a decalcification process although it has never been demonstrated experimentally. We described the morphology of the vulvae (operculum and hinge) and measure calcium levels employing X-ray Energy Dispersive Spectroscopy of the intermoult immature and mature female of several different species of grapsoid crabs: Austrohelice crassa, Cyclograpsus lavauxi, Hemigrapsus crenulatus, Hemigrapsus sexdentatus (Varunidae), Guinusia chabrus (Plagusiidae), Leptograpsus variegatus (Grapsidae), and the ocypodid Hemiplax hirtipes (Macrophthalmidae). We measured calcium levels during a reproductive cycle in the case of H. sexdentatus. In all the studied species the opercula and hinge had lower calcium levels compared to the adjacent exoskeleton, and the hinge showed the lowest values of calcium (9.7 and 40.8 weight%, respectively). Immature and adult crabs showed that the distribution of calcium remains the same after the pubertal moult as it was before. Furthermore, in H. sexdentatus, hinge calcium levels do not change during the female reproductive cycle when females become receptive. It is suggested that an alternative mechanism, not related to decalcification, could be involved in promoting mobility of the hinge in receptive females of these species. We need to modify our ideas of the processes involved in female receptivity in all these crabs with an operculate vulva and hence mate attraction. Answers to these questions are the key to understanding how the linkage of mating to moulting was broken.Fil: McLay, Colin L.. University Of Canterbury; Nueva ZelandaFil: Sal Moyano, María Paz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaCrustacean Society2016-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63526McLay, Colin L.; Sal Moyano, María Paz; Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura); Crustacean Society; Journal of Crustacean Biology; 36; 2; 3-2016; 220-2280278-03721937-240XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1163/1937240X-00002405info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jcb/article/36/2/220/2547967info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:06:50Zoai:ri.conicet.gov.ar:11336/63526instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:06:50.424CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura)
title Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura)
spellingShingle Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura)
McLay, Colin L.
Austrohelice
Copulation
Cyclograpsus
Decalcification
Guinusia
Hard-Shell Mating
Hemigrapsus
Hemiplax
Hinge Linemobility
Leptograpsus
Macrophthalmidae
Mate Attraction
Moulting
Varunidae
title_short Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura)
title_full Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura)
title_fullStr Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura)
title_full_unstemmed Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura)
title_sort Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura)
dc.creator.none.fl_str_mv McLay, Colin L.
Sal Moyano, María Paz
author McLay, Colin L.
author_facet McLay, Colin L.
Sal Moyano, María Paz
author_role author
author2 Sal Moyano, María Paz
author2_role author
dc.subject.none.fl_str_mv Austrohelice
Copulation
Cyclograpsus
Decalcification
Guinusia
Hard-Shell Mating
Hemigrapsus
Hemiplax
Hinge Linemobility
Leptograpsus
Macrophthalmidae
Mate Attraction
Moulting
Varunidae
topic Austrohelice
Copulation
Cyclograpsus
Decalcification
Guinusia
Hard-Shell Mating
Hemigrapsus
Hemiplax
Hinge Linemobility
Leptograpsus
Macrophthalmidae
Mate Attraction
Moulting
Varunidae
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The derived condition in Brachyura is exhibited when mating is not linked to moulting (i.e. hard-shell mating). Grapsoid and ocypodid crabs have this type of mating wherein females become receptive and have mobile vulvae covered by operculae without moulting. The mobility of the operculae has been attributed to a decalcification process although it has never been demonstrated experimentally. We described the morphology of the vulvae (operculum and hinge) and measure calcium levels employing X-ray Energy Dispersive Spectroscopy of the intermoult immature and mature female of several different species of grapsoid crabs: Austrohelice crassa, Cyclograpsus lavauxi, Hemigrapsus crenulatus, Hemigrapsus sexdentatus (Varunidae), Guinusia chabrus (Plagusiidae), Leptograpsus variegatus (Grapsidae), and the ocypodid Hemiplax hirtipes (Macrophthalmidae). We measured calcium levels during a reproductive cycle in the case of H. sexdentatus. In all the studied species the opercula and hinge had lower calcium levels compared to the adjacent exoskeleton, and the hinge showed the lowest values of calcium (9.7 and 40.8 weight%, respectively). Immature and adult crabs showed that the distribution of calcium remains the same after the pubertal moult as it was before. Furthermore, in H. sexdentatus, hinge calcium levels do not change during the female reproductive cycle when females become receptive. It is suggested that an alternative mechanism, not related to decalcification, could be involved in promoting mobility of the hinge in receptive females of these species. We need to modify our ideas of the processes involved in female receptivity in all these crabs with an operculate vulva and hence mate attraction. Answers to these questions are the key to understanding how the linkage of mating to moulting was broken.
Fil: McLay, Colin L.. University Of Canterbury; Nueva Zelanda
Fil: Sal Moyano, María Paz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
description The derived condition in Brachyura is exhibited when mating is not linked to moulting (i.e. hard-shell mating). Grapsoid and ocypodid crabs have this type of mating wherein females become receptive and have mobile vulvae covered by operculae without moulting. The mobility of the operculae has been attributed to a decalcification process although it has never been demonstrated experimentally. We described the morphology of the vulvae (operculum and hinge) and measure calcium levels employing X-ray Energy Dispersive Spectroscopy of the intermoult immature and mature female of several different species of grapsoid crabs: Austrohelice crassa, Cyclograpsus lavauxi, Hemigrapsus crenulatus, Hemigrapsus sexdentatus (Varunidae), Guinusia chabrus (Plagusiidae), Leptograpsus variegatus (Grapsidae), and the ocypodid Hemiplax hirtipes (Macrophthalmidae). We measured calcium levels during a reproductive cycle in the case of H. sexdentatus. In all the studied species the opercula and hinge had lower calcium levels compared to the adjacent exoskeleton, and the hinge showed the lowest values of calcium (9.7 and 40.8 weight%, respectively). Immature and adult crabs showed that the distribution of calcium remains the same after the pubertal moult as it was before. Furthermore, in H. sexdentatus, hinge calcium levels do not change during the female reproductive cycle when females become receptive. It is suggested that an alternative mechanism, not related to decalcification, could be involved in promoting mobility of the hinge in receptive females of these species. We need to modify our ideas of the processes involved in female receptivity in all these crabs with an operculate vulva and hence mate attraction. Answers to these questions are the key to understanding how the linkage of mating to moulting was broken.
publishDate 2016
dc.date.none.fl_str_mv 2016-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/63526
McLay, Colin L.; Sal Moyano, María Paz; Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura); Crustacean Society; Journal of Crustacean Biology; 36; 2; 3-2016; 220-228
0278-0372
1937-240X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/63526
identifier_str_mv McLay, Colin L.; Sal Moyano, María Paz; Calcium levels in the vulvar opercula of grapsoid and ocypodoid crabs (Decapoda: Brachyura); Crustacean Society; Journal of Crustacean Biology; 36; 2; 3-2016; 220-228
0278-0372
1937-240X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1163/1937240X-00002405
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jcb/article/36/2/220/2547967
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Crustacean Society
publisher.none.fl_str_mv Crustacean Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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