Embryonic development in ballan wrasse Labrus bergylta |
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| Authors: | J D'Arcy E Dunaevskaya J W Treasurer O Ottesen J Maguire N Zhuravleva A Karlsen C Rebours R D Fitzgerald |
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| Institution: | 1. MRI Carna, Ryan Institute, National University of Ireland, Galway, Ireland;2. University of Nordland, Faculty of Biosciences and Aquaculture, 8049 Bod?, Norway;3. Ardtoe Marine Laboratory, Acharacle, Argyll PH36 4LD, U.K.;4. Indigo Rock Marine Research Station, Gearhies, Bantry, Co. Cork, Ireland;5. Murmansk Marine Biological Institute, Kola Scientific station, Russian Academy of Sciences, 17, Vladimirskaya str., Murmansk 183010, Russia;6. Bioforsk, Norwegion Institute for Agricultural and Environmental Research, Frederik A. Dahls vei 20, 1432?s, Norway |
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| Abstract: | Eight primary embryonic developmental stages were assigned to eggs of ballan wrasse Labrus bergylta using key morphological features following standardized nomenclature: Ia, Ib, II, III, IV, V, VI and VI+, reared from single family clutches under comparable environmental conditions in Ireland and Norway. Development in L. bergylta is typical of demersal marine finfish species with a short egg stage. Hatching occurred c. 123 h post-fertilization (hpf) equivalent to 62·5 degree days at 12·2 ± 1·10° C (mean ±s.d.), after which the larvae swam intermittently near the surface of the water column. |
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| Keywords: | aquaculture cleaner fish egg staging hatch times labridae |
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