Natural spawning, early development and first feeding of the semicircle angelfish [Pomacanthus semicirculatus (Cuvier, 1831)] in captivity
Identifieur interne : 000305 ( Main/Exploration ); précédent : 000304; suivant : 000306Natural spawning, early development and first feeding of the semicircle angelfish [Pomacanthus semicirculatus (Cuvier, 1831)] in captivity
Auteurs : Ming-Yih Leu [Taïwan] ; Chyng-Hwa Liou [Taïwan] ; Wei-Hsien Wang [Taïwan] ; Shuenn-Der Yang [Taïwan] ; Pei-Jie Meng [Taïwan]Source :
- Aquaculture Research [ 1355-557X ] ; 2009-06.
English descriptors
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Abstract
Successful natural spawning of Pomacanthus semicirculatus in captivity from 11 September to 18 October, 2006 is described for the first time. Each female laid an average of 230 000 eggs during the spawning period. Fertilized eggs were spherical, transparent and buoyant and had a mean diameter of 0.61 ± 0.03 mm (mean ± SD). Embryonic development lasted 18–21 h at 28.5 °C. Newly hatched larvae were 1.35 ± 0.02 mm in total length (TL) with 27 (12+15) myomeres and had an oil globule in the ventroposterior area of the yolk sac. Larvae completed yolk absorption within 3 days post hatching at 2.37 ± 0.05 mm TL. Larvae were fed either 100% microalgae (Nannochloropsis sp.), 100% s‐type rotifers (Brachionus rotundiformis), 100% dinoflagellates (Gonyaulax sp.) or different combinations of the three (50%:50%:0%, 30%:35%:35%) to determine the effect of live feed on the survival rate. The survival was significantly (P<0.001) better in larvae fed a combination of diets (30%: 35%: 35%) than others. These results indicate that P. semicirculatus is a potential species for captive‐breeding programmes and the use of a combination of diets (microalgae plus s‐type rotifers and dinoflagellates) may be a suitable first food for fish larvae.
Url:
DOI: 10.1111/j.1365-2109.2009.02192.x
Affiliations:
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Each female laid an average of 230 000 eggs during the spawning period. Fertilized eggs were spherical, transparent and buoyant and had a mean diameter of 0.61 ± 0.03 mm (mean ± SD). Embryonic development lasted 18–21 h at 28.5 °C. Newly hatched larvae were 1.35 ± 0.02 mm in total length (TL) with 27 (12+15) myomeres and had an oil globule in the ventroposterior area of the yolk sac. Larvae completed yolk absorption within 3 days post hatching at 2.37 ± 0.05 mm TL. Larvae were fed either 100% microalgae (Nannochloropsis sp.), 100% s‐type rotifers (Brachionus rotundiformis), 100% dinoflagellates (Gonyaulax sp.) or different combinations of the three (50%:50%:0%, 30%:35%:35%) to determine the effect of live feed on the survival rate. The survival was significantly (P<0.001) better in larvae fed a combination of diets (30%: 35%: 35%) than others. These results indicate that P. semicirculatus is a potential species for captive‐breeding programmes and the use of a combination of diets (microalgae plus s‐type rotifers and dinoflagellates) may be a suitable first food for fish larvae.</div></front></TEI><affiliations><list><country><li>Taïwan</li></country></list><tree><country name="Taïwan"><noRegion><name sortKey="Leu, Ming Ih" sort="Leu, Ming Ih" uniqKey="Leu M" first="Ming-Yih" last="Leu">Ming-Yih Leu</name></noRegion><name sortKey="Leu, Ming Ih" sort="Leu, Ming Ih" uniqKey="Leu M" first="Ming-Yih" last="Leu">Ming-Yih Leu</name><name sortKey="Liou, Chyng Wa" sort="Liou, Chyng Wa" uniqKey="Liou C" first="Chyng-Hwa" last="Liou">Chyng-Hwa Liou</name><name sortKey="Meng, Pei Ie" sort="Meng, Pei Ie" uniqKey="Meng P" first="Pei-Jie" last="Meng">Pei-Jie Meng</name><name sortKey="Meng, Pei Ie" sort="Meng, Pei Ie" uniqKey="Meng P" first="Pei-Jie" last="Meng">Pei-Jie Meng</name><name sortKey="Wang, Wei Sien" sort="Wang, Wei Sien" uniqKey="Wang W" first="Wei-Hsien" last="Wang">Wei-Hsien Wang</name><name sortKey="Wang, Wei Sien" sort="Wang, Wei Sien" uniqKey="Wang W" first="Wei-Hsien" last="Wang">Wei-Hsien Wang</name><name sortKey="Yang, Shuenn Er" sort="Yang, Shuenn Er" uniqKey="Yang S" first="Shuenn-Der" last="Yang">Shuenn-Der Yang</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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