caa a22 4500 397551274 CHVBK 20180308164751.0 cr unu---uuuuu 161202e199608 xx s 000 0 eng 10.1006/jmsc.1996.0092 doi (NATIONALLICENCE)oxford-10.1006/jmsc.1996.0092 Sensitive stages during embryonic development of wolffish, Anarhichas lupus L. determining the final numbers of rays in unpaired fins and skeletal abnormalities [Elektronische Daten] [Dimitri A. Pavlov, Erlend Moksness] Larvae of common wolffish (Anarhichas lupus L.) obtained from eggs incubated at a constant temperature of 7.0°C had mean numbers of rays in the dorsal, anal, and caudal fins of 74.5, 46.4, and 23.8 respectively; those incubated at 11.0°C had 53.8, 25.7, and 25.2 rays, respectively. Several skeletal abnormalities, including fusion of parts and abnormal structure of neural arches in the pre-urostyle area, accompanied the reduction in numbers of dorsal and anal fin rays at 11°C. To test which period of embryonic development was critical for determining the final numbers of unpaired fin rays and skeletal abnormalities, the eggs were transferred from 7°C to 11°C and back at different stages. Determination of the final numbers of rays in the dorsal and anal fins and most of skeletal abnormalities occurred mainly between 50% vascularization of the yolk sac and the beginning of formation of rays in the caudal and pectoral fins. The final number of caudal fin rays was determined between the latter stage and formation of rays in the dorsal and anal fins. To reduce the egg incubation period and still obtain larvae without skeletal abnormalities, a temperature regime during embryonic development is suggested. © 1996 International council for the Exploration of the Sea Articles nationallicence wolffish nationallicence embryonic development nationallicence sensitive stages nationallicence fin rays nationallicence unpaired fins nationallicence skeletal abnormalities nationallicence Pavlov Dimitri A. Chair of Ichthyology, Department of Biology, Moscow State University 119899, Moscow, Russian Federation Tel: (+7) 09 59 39 37 92: Fax: (+7) 09 59 39 15 45; E-mail: pavlov@dimitri.bio.msu.su aut Moksness Erlend Institute of Marine Research, Flødevigen Marine Research Station N-4817, His, Norway Tel: (+47) 37 059041; Fax: (+47) 37 059001; E-mail: erlend.moksness@imr.no aut ICES Journal of Marine Science Oxford University Press 53/4(1996-08), 731-740 1054-3139 53:4<731 1996 53 icesjms https://doi.org/10.1006/jmsc.1996.0092 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1006/jmsc.1996.0092 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pavlov Dimitri A. Chair of Ichthyology, Department of Biology, Moscow State University 119899, Moscow, Russian Federation Tel: (+7) 09 59 39 37 92: Fax: (+7) 09 59 39 15 45; E-mail: pavlov@dimitri.bio.msu.su aut NATIONALLICENCE 700 1- Moksness Erlend Institute of Marine Research, Flødevigen Marine Research Station N-4817, His, Norway Tel: (+47) 37 059041; Fax: (+47) 37 059001; E-mail: erlend.moksness@imr.no aut NATIONALLICENCE 773 0- ICES Journal of Marine Science Oxford University Press 53/4(1996-08), 731-740 1054-3139 53:4<731 1996 53 icesjms Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford