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dc.contributor.author
Gil, Damian Gaspar
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dc.contributor.author
Escudero, Graciela
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dc.contributor.author
Zaixso, Hector Eliseo
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dc.date.available
2023-02-24T17:29:00Z
dc.date.issued
2011-11
dc.identifier.citation
Gil, Damian Gaspar; Escudero, Graciela; Zaixso, Hector Eliseo; Brooding and development of Anasterias minuta (Asteroidea: Forcipulata) in Patagonia, Argentina; Springer; Marine Biology; 158; 11; 11-2011; 2589-2602
dc.identifier.issn
0025-3162
dc.identifier.uri
http://hdl.handle.net/11336/188817
dc.description.abstract
Brooding, embryonic and larval development, and the influence of environmental and biological factors in tidepool habitats were studied in the sea star, Anasterias minuta, at various sites along ~220 km of the Patagonian coast. This species has a benthic, lecithotrophic development that includes eight distinct developmental stages. A larval organ, the connection cord, is developed from a small preoral lobe at early stages of development and becomes larger and thinner at advanced stages. Fecundity and average egg size increased with female body size. The regression of log egg number to log sea-star size and weight at different sites had a slope significantly less than 3. 0, resulting in negative allometry and indicating that brood capacity was limited in large females. Development was generally synchronous among sites, but varied within each brood at advanced stages, with more developed brooded larvae located at the periphery of the brood mass. Brooding was synchronous among various populations at different years and spatial scales, and extended over a period of 8 months. The highest proportion of brooding females occurred during May and June (austral winter). Juveniles were released mainly during September. The likelihood of finding brooding sea stars decreased with increasing sea water temperature, tidal height, and wave exposure, and increased with increasing body size. Both body size of brooding females and brooding rate were higher in the infralittoral fringe than at midlittoral levels. A revision of the current model of brooding behavior and development among forcipulate sea stars is given.
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
Asteroidea
dc.subject
Incubacion
dc.subject
Reproduccion
dc.subject
Bentos
dc.subject.classification
Biología Marina, Limnología
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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
Brooding and development of Anasterias minuta (Asteroidea: Forcipulata) in Patagonia, Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-02-21T22:19:22Z
dc.journal.volume
158
dc.journal.number
11
dc.journal.pagination
2589-2602
dc.journal.pais
Alemania
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dc.journal.ciudad
Berlin
dc.description.fil
Fil: Gil, Damian Gaspar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco". Instituto de Desarrollo Costero; Argentina
dc.description.fil
Fil: Escudero, Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Zaixso, Hector Eliseo. Universidad Nacional de la Patagonia "San Juan Bosco". Instituto de Desarrollo Costero; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Marine Biology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs00227-011-1760-1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00227-011-1760-1
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