Artículo
Oviposition and embryonic development in the volutid snail Adelomelon ancilla
Zabala, Maria Soledad
; Averbuj, Andres
; Sanchez Antelo, Carlos
; Penchaszadeh, Pablo E.; Bigatti, Gregorio
Fecha de publicación:
05/2015
Editorial:
Institute of Malacology
Revista:
Malacologia
ISSN:
0076-2997
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Intracapsular embryonic development is common in marine gastropods. In many species, embryos obtain nutrition during ontogeny by ingesting substances contained in the intracapsular fl uid. South American volutids spawn egg capsules containing relatively few eggs, and development is entirely intracapsular, with young hatching as craw-laway juveniles. The spawning habits, egg capsules morphology and embryonic development of the South American volutid Adelomelon ancilla is described in this work. Egg capsules of A. ancilla (n = 42) contained 3.0 ± 1.4 (mean ± SD) embryos with a range of 1–6 eggs or embryos. The embryonic morphological changes and body spiralization occur simultaneously with embryo feeding. All embryos within a single egg capsule shared the same developmental stage. No evidence of cannibalism or intracapsular competition was found, suggesting that food is not a limiting resource as in other volutid species. Estimated intracapsular developmental time varied between fi ve and six months (between 12–14°C). The long developmental time and low number of embryos inside the egg capsules, together with late reproductive maturity and longevity of adult individuals, reinforce the statement that the neogastropod Adelomelon ancilla is a fragile resource that must be conserved in Argentinean benthic communities.
Palabras clave:
Neogastropoda
,
Volutidae
,
Egg Capsules
,
Intracapsular Development
,
Patagonia
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT-CENPAT)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CENPAT
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CENPAT
Articulos(MACNBR)
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Articulos de MUSEO ARG.DE CS.NAT "BERNARDINO RIVADAVIA"
Citación
Zabala, Maria Soledad; Averbuj, Andres; Sanchez Antelo, Carlos; Penchaszadeh, Pablo E.; Bigatti, Gregorio; Oviposition and embryonic development in the volutid snail Adelomelon ancilla; Institute of Malacology; Malacologia; 58; 1-2; 5-2015; 337-347
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