Effect of lordosis on the swimming performance of juvenile sea bass (Dicentrarchus labrax L.) |
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Authors: | Fatih Basaran Huseyin Ozbilgin & Yeliz Doganyilmaz Ozbilgin |
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Institution: | Fisheries Faculty, Ege University, Izmir, Turkey; Fisheries Faculty, Yeni?ehir Campus, Mersin University, Mersin, Turkey |
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Abstract: | The critical swimming speed (Ucrit, cm s?1) value of normal juvenile sea bass (Dicentrarchus labrax) (64.7±6.33) was significantly higher than that of fish with lordosis (60.3±6.66) (P<0.05). Both normal fish and those with lordosis showed increased endurance with increasing length during exercise at a fixed water velocity of 50 cm s?1. This speed was used to investigate the separation possibility of deformed specimen from the normal developed fish based on their swimming performance, and 28% separation was achieved without losing any normal fish by the end of the 10th minute. To achieve a better separation of the deformities from the normal, first grading of the juveniles and then a swimming endurance test is advised. |
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Keywords: | lordosis swiming performance sea bass deformity separation |
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