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dc.contributor.author Gurovich, Fernanda Mariel
dc.contributor.author Burela, Silvana
dc.contributor.author Martín, Pablo Rafael
dc.date.available 2018-09-05T18:34:23Z
dc.date.issued 2018-02-18
dc.identifier.citation Gurovich, Fernanda Mariel; Burela, Silvana; Martín, Pablo Rafael; Life cycle of Pomacea americanista, a poorly known apple snail endemic to the Iguazú and Alto Paraná Rivers, southern South America; Oxford University Press; Journal of Molluscan Studies; 84; 1; 18-2-2018; 62-68
dc.identifier.issn 0260-1230
dc.identifier.uri http://hdl.handle.net/11336/58400
dc.description.abstract The Ampullariidae (apple snails) are freshwater snails of tropical and subtropical regions. Recent research has concentrated on a few species that are invasive or potential biocontrol agents, but the basic life history traits of most species remain unknown. One such poorly known species is Pomacea americanista, endemic to the Alto Paraná and Iguazú Rivers in southern South America, which may be vulnerable to environmental degradation. We studied the growth, survivorship, maturation and reproductive activity of P. americanista to help evaluate its resilience under different scenarios of environmental change. Fifty snails that hatched in the laboratory from two egg masses collected in San Francisco Stream (Misiones Province, Argentina) were reared under controlled conditions until their natural death. Shell growth was almost linear up to the 20th week of life, subsequently decreasing smoothly. Growth rate, asymptotic sizes, time to reach asymptotic size and age at maturity were greater for females than males. Mortality patterns were similar for both sexes, with no deaths up to 38 weeks and steady mortality thereafter, the maximum longevity being 143 weeks. The fecundity of P. americanista is lower than that of other apple snails under similar conditions. Under laboratory conditions males and females underwent a single extended reproductive period, but under the seasonal climate in their natural habitats their life cycle would probably extend for more than 3 years, with two or more reproductive periods. The low fecundity and the late maturity of P. americanista indicate slow population growth and low resilience relative to invasive apple snails. These traits, combined with a restricted geographical range and an association with hard substrates in swiftly flowing waters, suggest that P. americanista could be vulnerable.
dc.format application/pdf
dc.language.iso eng
dc.publisher Oxford University Press
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject Growth
dc.subject Survivorship
dc.subject Maturity
dc.subject Fecundity
dc.subject.classification Otras Ciencias Biológicas
dc.subject.classification Ciencias Biológicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Life cycle of Pomacea americanista, a poorly known apple snail endemic to the Iguazú and Alto Paraná Rivers, southern South America
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2018-08-23T18:56:38Z
dc.journal.volume 84
dc.journal.number 1
dc.journal.pagination 62-68
dc.journal.pais Reino Unido
dc.journal.ciudad Oxford
dc.description.fil Fil: Gurovich, Fernanda Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; Argentina
dc.description.fil Fil: Burela, Silvana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; Argentina. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Laboratorio de Ecología; Argentina
dc.description.fil Fil: Martín, Pablo Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; Argentina. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Laboratorio de Ecología; Argentina
dc.journal.title Journal of Molluscan Studies
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mollus/article-abstract/84/1/62/4745768
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mollus/eyx046
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)