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dc.contributor.author
Gamarra Luques, Carlos Diego
dc.contributor.author
Giraud Billoud, Maximiliano German
dc.contributor.author
Castro Vazquez, Alfredo Juan
dc.date.available
2016-12-27T14:11:14Z
dc.date.issued
2013-03
dc.identifier.citation
Gamarra Luques, Carlos Diego; Giraud Billoud, Maximiliano German; Castro Vazquez, Alfredo Juan; Reproductive organogenesis in the apple snail Pomacea Canaliculata (Lamarck, 1822), with reference to the effects of xenobiotics; Oxford University Press; Journal Of Molluscan Studies; 79; 2; 3-2013; 147-162
dc.identifier.issn
0260-1230
dc.identifier.uri
http://hdl.handle.net/11336/10279
dc.description.abstract
The complex array of male and female reproductive organs in Pomacea canaliculata develops from the gonoductal and copulatory primordia. These primordia are present in both sexes, but while the gonoductal primordium (or 'gonoduct') is present in hatchlings, the copulatory primordium only appears in juveniles at the 5-mm (shell length) stage. The proximal portion of the gonoduct will produce the gonad, while the more distal portions will produce the accessory sexual organs (the visceral vas deferens, pallial seminal vesicle, prostate and genital papilla in males, and the visceral oviduct, uterus and vagina in females). The gonadal portion of the gonoduct differentiates histologically into either the testis or the ovary at the 10-mm stage, while the more distal portions remain undifferentiated and the copulatory primordium remains approximately the same size in both sexes.The copulatory rudiment becomes larger in juvenile males at the 15-mm stage and rudiments of all adult components have appeared by then. At this stage, the pallial gonoduct differentiates into either the pallial seminal vesicle and prostate, or the uterus and vagina. Subadults at the 20-mm stage possess either some mature spermatogenic nests or some large oocytes. Crossing of the genital papilla over the rectum, a crucial event in male differentiation, has already occurred at this stage. Sexual differentiation of the operculum and the initiation of copulatory behaviour occur between the 15- and 20-mm stages, while oviposition begins c. 2 weeks later. Full development of gonoduct derivatives is reached at the 25-mm stage in both sexes. However, the copulatory structures remain rudimentary in females, even though they may still develop to some extent later on. These findings not only indicate two distinct origins of reproductive organs, but also several developmental stages during which different control mechanisms may operate. This has implications for understanding potential targets and responses to endocrine-disrupting xenobiotics.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Xenobiotics
dc.subject
Apple Snails
dc.subject.classification
Otras Ciencias Biológicas
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Reproductive organogenesis in the apple snail Pomacea Canaliculata (Lamarck, 1822), with reference to the effects of xenobiotics
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-09-19T18:43:58Z
dc.identifier.eissn
1464-3766
dc.journal.volume
79
dc.journal.number
2
dc.journal.pagination
147-162
dc.journal.pais
Reino Unido
dc.journal.ciudad
Oxford
dc.description.fil
Fil: Gamarra Luques, Carlos Diego. Consejo Nacional de Investigaciones Cientiíficas y Tecnicas. Centro Cientifico Tecnologico Mendoza. Instituto Histologia y Embriologia de Mendoza "Dr. M. Burgos"; Argentina
dc.description.fil
Fil: Giraud Billoud, Maximiliano German. Consejo Nacional de Investigaciones Científicas y Tecnicas. Centro Cientifico Tecnologico Mendoza. Instituto Histologia y Embriologia de Mendoza "Dr. M. Burgos"; Argentina
dc.description.fil
Fil: Castro Vazquez, Alfredo Juan. Consejo Nacional de Investigaciones Científicas y Tecnicas. Centro Cientifico Tecnologico Mendoza. Instituto Histologia y Embriologia de Mendoza "Dr. M. Burgos"; Argentina
dc.journal.title
Journal Of Molluscan Studies
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://mollus.oxfordjournals.org/content/79/2/147.abstract
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1093/mollus/eyt011
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