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dc.contributor.author
Baeza, J. A.
dc.contributor.author
Braga, A. A.
dc.contributor.author
Lopez, Laura Susana
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dc.contributor.author
Perez, E.
dc.contributor.author
Negreiros Fransozo, María Lucía
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dc.contributor.author
Fransozo, A.
dc.date.available
2019-01-16T18:32:07Z
dc.date.issued
2010-12
dc.identifier.citation
Baeza, J. A.; Braga, A. A.; Lopez, Laura Susana; Perez, E.; Negreiros Fransozo, María Lucía; et al.; Population dynamics, sex ratio and size at sex change in a protandric simultaneous hermaphrodite, the spiny shrimp Exhippolysmata oplophoroides; Springer; Marine Biology; 157; 12; 12-2010; 2643-2653
dc.identifier.issn
0025-3162
dc.identifier.uri
http://hdl.handle.net/11336/68144
dc.description.abstract
One of the main goals of sex allocation theory is understanding sex ratio evolution. However, theoretical studies predicting sex ratios in species with unusual sexual systems, such as protandric simultaneous (PS) hermaphroditism, are rare. In PS hermaphrodites, juveniles first develop into functional males that mature into simultaneous hermaphrodites later in life. Here, we report on the sex ratio (males/males + hermaphrodites) in the PS hermaphroditic shrimp Exhippolysmata oplophoroides. A 2-year study demonstrated that hermaphrodites dominated the population in two different bays. This skewed sex ratio may be explained by limited encounter rates among conspecifics. In agreement with this idea, the density of shrimps was extremely low (≤1 shrimp km-2) at the two study sites. Size at sex phase change and sex ratios remained relatively stable through time at the two bays. The stability of these parameters might be explained by the rather steady population structure of this species during the study period. A review of sex ratios in PS hermaphroditic shrimps (Lysmata and Exhippolysmata) revealed considerable variation; some species have male- and others hermaphrodite-skewed sex ratios. The conditions explaining inter- and intra-specific sex ratio variation in protandric simultaneous hermaphroditic species remain to be addressed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Protandric-Simultaneous Hermaphrodite
dc.subject
Shrimp
dc.subject
Exhippolysmata Oplophoroides
dc.subject.classification
Otras Ciencias Biológicas
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Population dynamics, sex ratio and size at sex change in a protandric simultaneous hermaphrodite, the spiny shrimp Exhippolysmata oplophoroides
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-01-14T18:33:20Z
dc.identifier.eissn
1432-1793
dc.journal.volume
157
dc.journal.number
12
dc.journal.pagination
2643-2653
dc.journal.pais
Alemania
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dc.description.fil
Fil: Baeza, J. A.. Universidad Católica del Norte; Chile
dc.description.fil
Fil: Braga, A. A.. Universidade Federal do Espírito Santo; Brasil
dc.description.fil
Fil: Lopez, Laura Susana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina
dc.description.fil
Fil: Perez, E.. Universidad Católica del Norte; Chile. Centro de Estudios Avanzados en Zonas Aridas; Chile
dc.description.fil
Fil: Negreiros Fransozo, María Lucía. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
dc.description.fil
Fil: Fransozo, A.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
dc.journal.title
Marine Biology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00227-010-1525-2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00227-010-1525-2
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