Mostrar el registro sencillo del ítem
dc.contributor.author
Saveanu, Lucía
dc.contributor.author
Martín, Pablo Rafael
dc.date.available
2016-07-04T21:06:21Z
dc.date.issued
2014-06
dc.identifier.citation
Saveanu, Lucía; Martín, Pablo Rafael; Egg cannibalism in pomacea canaliculata (caenogastropoda, ampullariidae) from Southern Pampas: an alternative trophic strategy?; Institute of Malacology; Malacologia; 57; 2; 6-2014; 341-351
dc.identifier.issn
0076-2997
dc.identifier.uri
http://hdl.handle.net/11336/6350
dc.description.abstract
Pomacea canaliculata is a freshwater gastropod native to southern South America and is listed among the world?s 100 worst invaders. Diverse food sources can be exploited by this apple snail, including snails with gelatinous and subaquatic egg masses. Records of ingestion of their own egg masses (egg cannibalism), which are aerial and calcareous, have only been anecdotal in P. canaliculata. Our aims were to study egg cannibalism in a natural population and also under laboratory conditions. In a stream population from Southern Pampas we recorded P. canaliculata attacking their own fresh egg masses which had been naturally submerged by an increase in water level. In addition, when we artificially submerged fresh and old egg masses in a field experiment, we observed several snails readily attacking both. In the laboratory we also observed the capture by pedal surface collecting of floating remains of egg masses. In laboratory trials juveniles fed on eggs reached larger sizes than starved snails but smaller than those fed on lettuce; adult snails also eat eggs but their growth rates were not affected by the food regime. Pomacea canaliculata eggs present defensive and anti-nutritive compounds that apparently dissuade almost all potential predators, but this snail did not appear to be negatively affected when feeds on its own eggs. The ingestion of egg remains and submerged egg masses is probably more frequent than previously considered in P. canaliculata, which may take advantage of using these alternative food resources when others are scarce.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Institute of Malacology
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Apple Snails
dc.subject
Intraspecific Predation
dc.subject
Growth
dc.subject
Pedal Surface Collecting
dc.subject.classification
Ecología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Egg cannibalism in pomacea canaliculata (caenogastropoda, ampullariidae) from Southern Pampas: an alternative trophic strategy?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-05-10T14:35:28Z
dc.journal.volume
57
dc.journal.number
2
dc.journal.pagination
341-351
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Philadelphia
dc.description.fil
Fil: Saveanu, Lucía. Universidad Nacional del Sur; Argentina
dc.description.fil
Fil: Martín, Pablo Rafael. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnológico Bahia Blanca. Instituto de Ciencias Biologicas y Biomedicas del Sur; Argentina
dc.journal.title
Malacologia
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.4002/040.057.0207
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.4002/040.057.0207
Archivos asociados