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Abstract:

The present study describes the egg deposition, embryonic and larval development, and reproductive behavioral traits of the South American dorid nudibranch Doris fontainei d'Orbigny, 1835, observed in laboratory under controlled conditions. Behavior during copulation and spawning was recorded using a digital video camera. Copulation and spawning lasted 2-4 h and 22-23 h, respectively. The spawned mass reached 1.80 m in length and was coiled in a counter-clockwise direction from the centre with one edge affixed to the substrate. The ribbon contained numerous small capsules, each having 2-4 eggs of about 86 μm in diameter. Intracapsular egg development lasted about 14 days at 14.5°C, culminating with the release of up to 1.25 million veliger larvae per egg mass. The new veliger larvae showed incipient development of the foot and a relatively small protoconch (ca. 158 μm), indicating they enter a planktotrophic phase. A comparison with other nudibranchs, and particularly with dorids, suggests that D. fontainei has an annual cycle whose egg mass fits a morphological pattern typical of the family. The characteristics of its encapsulated development show it is one of the most fecund species among those having this pattern, which also explains, in part, its geographical dispersion from Peru in the Pacific to northern Argentina in the Atlantic.

Registro:

Documento: Artículo
Título:Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region
Autor:Muniain, C.; Gallardo, C.S.; Penchaszadeh, P.E.
Filiación:Museo Argentino de Ciencias Naturales Bernardino Rivadavia, Avda. Angel Gallardo 470, C1405DJR, Buenos Aires, Argentina
Instituto de Zoología E. F. Kilian, Universidad Austral de Chile, Valdivia, Chile
Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:Multiple embryos; Nudibranchia; Planktotrophic development; Reproductive behavior; Doris; Gastropoda; Nudibranchia; Opisthobranchia
Año:2007
Volumen:121
Número:3
Página de inicio:139
Página de fin:145
Título revista:Nautilus
Título revista abreviado:Nautilus
ISSN:00281344
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00281344_v121_n3_p139_Muniain

Referencias:

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Citas:

---------- APA ----------
Muniain, C., Gallardo, C.S. & Penchaszadeh, P.E. (2007) . Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region. Nautilus, 121(3), 139-145.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00281344_v121_n3_p139_Muniain [ ]
---------- CHICAGO ----------
Muniain, C., Gallardo, C.S., Penchaszadeh, P.E. "Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region" . Nautilus 121, no. 3 (2007) : 139-145.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00281344_v121_n3_p139_Muniain [ ]
---------- MLA ----------
Muniain, C., Gallardo, C.S., Penchaszadeh, P.E. "Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region" . Nautilus, vol. 121, no. 3, 2007, pp. 139-145.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00281344_v121_n3_p139_Muniain [ ]
---------- VANCOUVER ----------
Muniain, C., Gallardo, C.S., Penchaszadeh, P.E. Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region. Nautilus. 2007;121(3):139-145.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00281344_v121_n3_p139_Muniain [ ]