Integrated analysis of sexual maturation through successive growth instars in the spider crab Leurocyclus tuberculosus (Decapoda: Majoidea)

An integrative analysis of sexual maturity associated with growth was developed for the spider crab Leurocyclus tuberculosus (H. Milne Edwards and Lucas, 1842). Sexual maturity was characterized based on gonadal, morphological, morphometric, and functional sexual maturity. Progress in sexual maturat...

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Detalles Bibliográficos
Autor principal: González Pisani, Ximena
Publicado: 2017
Materias:
Leurocyclus tuberculosus
Majoidea
Sexual maturity
Spider crabs
Stage of growth
allometry
biological development
crab
developmental stage
growth
maturation
molt
morphology
morphometry
sexual maturity
size at maturity
Majidae
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00084301_v95_n7_p473_GonzalezPisani
http://hdl.handle.net/20.500.12110/paper_00084301_v95_n7_p473_GonzalezPisani
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00084301_v95_n7_p473_GonzalezPisani
record_format dspace
spelling paper:paper_00084301_v95_n7_p473_GonzalezPisani2023-06-08T14:32:04Z Integrated analysis of sexual maturation through successive growth instars in the spider crab Leurocyclus tuberculosus (Decapoda: Majoidea) González Pisani, Ximena Leurocyclus tuberculosus Majoidea Sexual maturity Spider crabs Stage of growth allometry biological development crab developmental stage growth maturation molt morphology morphometry sexual maturity size at maturity Majidae Majoidea An integrative analysis of sexual maturity associated with growth was developed for the spider crab Leurocyclus tuberculosus (H. Milne Edwards and Lucas, 1842). Sexual maturity was characterized based on gonadal, morphological, morphometric, and functional sexual maturity. Progress in sexual maturation was described through 13 growth stages (instars) detected by the examination of size (carapace width) frequency distributions. Mature females displayed mature ovaries, developed vaginae, open gonopores, allometric changes in the abdomen, and ovigerous stage in the transition from instar IX to instar X. Sexually mature males presented spermatophores in the distal vasa deferentia and allometric changes in several measurements of the right chela in the transition from instar X to instar XI. However, two prepubertal phases were recognized in both sexes separated from each other by a prepubertal critical molt. Preceding the second critical molt, gonopores were sealed and vasa deferentia showed no spermatophores, and therefore neither sex was able to mate. The integrated analysis of size at maturity and size frequency distributions showed that in both sexes molt to gonadal, morphological, morphometric, and functional sexual maturity occurred in advance of the terminal molt, in contrast with patterns observed in other Majoidea. © 2017, Canadian Science Publishing. All rights reserved. Fil:González-Pisani, X. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00084301_v95_n7_p473_GonzalezPisani http://hdl.handle.net/20.500.12110/paper_00084301_v95_n7_p473_GonzalezPisani
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Leurocyclus tuberculosus
Majoidea
Sexual maturity
Spider crabs
Stage of growth
allometry
biological development
crab
developmental stage
growth
maturation
molt
morphology
morphometry
sexual maturity
size at maturity
Majidae
Majoidea
spellingShingle Leurocyclus tuberculosus
Majoidea
Sexual maturity
Spider crabs
Stage of growth
allometry
biological development
crab
developmental stage
growth
maturation
molt
morphology
morphometry
sexual maturity
size at maturity
Majidae
Majoidea
González Pisani, Ximena
Integrated analysis of sexual maturation through successive growth instars in the spider crab Leurocyclus tuberculosus (Decapoda: Majoidea)
topic_facet Leurocyclus tuberculosus
Majoidea
Sexual maturity
Spider crabs
Stage of growth
allometry
biological development
crab
developmental stage
growth
maturation
molt
morphology
morphometry
sexual maturity
size at maturity
Majidae
Majoidea
description An integrative analysis of sexual maturity associated with growth was developed for the spider crab Leurocyclus tuberculosus (H. Milne Edwards and Lucas, 1842). Sexual maturity was characterized based on gonadal, morphological, morphometric, and functional sexual maturity. Progress in sexual maturation was described through 13 growth stages (instars) detected by the examination of size (carapace width) frequency distributions. Mature females displayed mature ovaries, developed vaginae, open gonopores, allometric changes in the abdomen, and ovigerous stage in the transition from instar IX to instar X. Sexually mature males presented spermatophores in the distal vasa deferentia and allometric changes in several measurements of the right chela in the transition from instar X to instar XI. However, two prepubertal phases were recognized in both sexes separated from each other by a prepubertal critical molt. Preceding the second critical molt, gonopores were sealed and vasa deferentia showed no spermatophores, and therefore neither sex was able to mate. The integrated analysis of size at maturity and size frequency distributions showed that in both sexes molt to gonadal, morphological, morphometric, and functional sexual maturity occurred in advance of the terminal molt, in contrast with patterns observed in other Majoidea. © 2017, Canadian Science Publishing. All rights reserved.
author González Pisani, Ximena
author_facet González Pisani, Ximena
author_sort González Pisani, Ximena
title Integrated analysis of sexual maturation through successive growth instars in the spider crab Leurocyclus tuberculosus (Decapoda: Majoidea)
title_short Integrated analysis of sexual maturation through successive growth instars in the spider crab Leurocyclus tuberculosus (Decapoda: Majoidea)
title_full Integrated analysis of sexual maturation through successive growth instars in the spider crab Leurocyclus tuberculosus (Decapoda: Majoidea)
title_fullStr Integrated analysis of sexual maturation through successive growth instars in the spider crab Leurocyclus tuberculosus (Decapoda: Majoidea)
title_full_unstemmed Integrated analysis of sexual maturation through successive growth instars in the spider crab Leurocyclus tuberculosus (Decapoda: Majoidea)
title_sort integrated analysis of sexual maturation through successive growth instars in the spider crab leurocyclus tuberculosus (decapoda: majoidea)
publishDate 2017
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00084301_v95_n7_p473_GonzalezPisani
http://hdl.handle.net/20.500.12110/paper_00084301_v95_n7_p473_GonzalezPisani
work_keys_str_mv AT gonzalezpisaniximena integratedanalysisofsexualmaturationthroughsuccessivegrowthinstarsinthespidercrableurocyclustuberculosusdecapodamajoidea
_version_ 1768544300613763072

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