EMBRYONIC DEVELOPMENT, FEEDING AND INTRACAPSULAR OXYGEN AVAILABILITY IN TROPHON GEVERSIANUS (GASTROPODA: MURICIDAE)

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dc.contributor.authorCumplido, Mariano
dc.contributor.authorPappalardo, Paula
dc.contributor.authorFernandez, Miriam
dc.contributor.authorAverbuj, Andres
dc.contributor.authorBigatti, Gregorio
dc.date.accessioned2024-01-10T12:38:42Z
dc.date.available2024-01-10T12:38:42Z
dc.date.issued2011
dc.description.abstractLarge-scale patterns of encapsulated embryo development and causal factors determining developmental success in the marine environment have been relevant issues of research for decades. We studied the embryonic development and intracapsular oxygen availability of Trophon geversianus in egg capsules from northern Patagonia (Golfo Nuevo, Argentina). The intracapsular embryonic development had a mean duration of 112 days (at 12-14 degrees C). The initial number of eggs per capsule was 197 (mean diameter 270 mu m), but on average only four embryos per capsule reached the juvenile stage. Embryos fed on nurse eggs (which disintegrated spontaneously 48 h after oviposition). The sequence of intracapsular developmental stages was recorded from egg to hatching occurred at the crawling stage (mean shell length 2.8 mm). Maximum growth rate was observed at the 'veliger' stage, while nurse eggs were consumed. A decrease in embryo number was observed between prehatching and hatching. Cannibalism was recorded in an egg capsule containing a prehatching embryo, which showed signs of shell drilling by the accessory boring organ. Intracapsular oxygen availability decreased from 90% during the cleavage stage to 45% of air saturation in the final stages of development (at 13 degrees C). Abnormal embryos were recognized in egg capsules, probably associated with food competition or oxygen limitation.
dc.description.funderMinisterio de Educacion del Chubut
dc.description.funderCONICYT
dc.description.funderLerner Gray fund for marine research
dc.description.funderFondecyt
dc.fechaingreso.objetodigital2024-05-06
dc.format.extent8 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1093/mollus/eyr025
dc.identifier.eissn1464-3766
dc.identifier.issn0260-1230
dc.identifier.urihttps://doi.org/10.1093/mollus/eyr025
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77085
dc.identifier.wosidWOS:000296627100011
dc.information.autorucCiencias Biológicas;Fernandez M ;S/I;104166
dc.information.autorucCiencias Biológicas;Pappalardo P ;S/I;166435
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final436
dc.pagina.inicio429
dc.publisherOXFORD UNIV PRESS
dc.revistaJOURNAL OF MOLLUSCAN STUDIES
dc.rightsregistro bibliográfico
dc.subjectREPRODUCTIVE-BIOLOGY
dc.subjectEGG CAPSULES
dc.subjectTEMPERATURE
dc.subjectCALYPTRAEIDAE
dc.subjectPOPULATION
dc.subjectSIZE
dc.subjectAGE
dc.subject.ods14 Life Below Water
dc.subject.odspa14 Vida submarina
dc.titleEMBRYONIC DEVELOPMENT, FEEDING AND INTRACAPSULAR OXYGEN AVAILABILITY IN TROPHON GEVERSIANUS (GASTROPODA: MURICIDAE)
dc.typeartículo
dc.volumen77
sipa.codpersvinculados104166
sipa.codpersvinculados166435
sipa.indexWOS
sipa.trazabilidadCarga SIPA;09-01-2024
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