Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region
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 u...
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todo:paper_00281344_v121_n3_p139_Muniain2023-10-03T14:38:43Z Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region Muniain, C. Gallardo, C.S. Penchaszadeh, P.E. Multiple embryos Nudibranchia Planktotrophic development Reproductive behavior Doris Gastropoda Nudibranchia Opisthobranchia 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. Fil:Penchaszadeh, P.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00281344_v121_n3_p139_Muniain |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Multiple embryos Nudibranchia Planktotrophic development Reproductive behavior Doris Gastropoda Nudibranchia Opisthobranchia |
| spellingShingle |
Multiple embryos Nudibranchia Planktotrophic development Reproductive behavior Doris Gastropoda Nudibranchia Opisthobranchia Muniain, C. Gallardo, C.S. Penchaszadeh, P.E. Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region |
| topic_facet |
Multiple embryos Nudibranchia Planktotrophic development Reproductive behavior Doris Gastropoda Nudibranchia Opisthobranchia |
| description |
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. |
| format |
JOUR |
| author |
Muniain, C. Gallardo, C.S. Penchaszadeh, P.E. |
| author_facet |
Muniain, C. Gallardo, C.S. Penchaszadeh, P.E. |
| author_sort |
Muniain, C. |
| title |
Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region |
| title_short |
Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region |
| title_full |
Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region |
| title_fullStr |
Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region |
| title_full_unstemmed |
Reproductive biology of the nudibranch Doris fontainei d'Orbigny, 1835 (Gastropoda: Opisthobranchia) from the magellanic region |
| title_sort |
reproductive biology of the nudibranch doris fontainei d'orbigny, 1835 (gastropoda: opisthobranchia) from the magellanic region |
| url |
http://hdl.handle.net/20.500.12110/paper_00281344_v121_n3_p139_Muniain |
| work_keys_str_mv |
AT muniainc reproductivebiologyofthenudibranchdorisfontaineidorbigny1835gastropodaopisthobranchiafromthemagellanicregion AT gallardocs reproductivebiologyofthenudibranchdorisfontaineidorbigny1835gastropodaopisthobranchiafromthemagellanicregion AT penchaszadehpe reproductivebiologyofthenudibranchdorisfontaineidorbigny1835gastropodaopisthobranchiafromthemagellanicregion |
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1807320251104231424 |