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B L Partridge

Publications and source records attributed to B L Partridge.

22 records · Page 2Linked to original sources

Evidence against a hydrodynamic function for fish schools.

THERE are numerous explanations for the formation of fish schools(1,2), one of the most popular being that the members gain hydrodynamic advantage over solitary individuals(3-6). The model proposed by Weihs(5,6) for the first time makes precise predictions about school structure which can be verified. We report here the first empirical test of this model, and demonstrate that three species of schooling fish do not swim in appropriate positions to gain hydrodynamic advantage.

Journal Article↗

A blind fish can school.

Vision is not required in order for fish to school. Five individual saithe, Pollachius virens, were able to join schools of 25 normal saithe swimming in an annular tank, while blinded with opaque eye covers. Test fish maintained position within the school indefinitely and responded to short-term movements of individuals within the school, although quantitative differences in reaction time and schooling behavior were noted. Five fish with lateral lines cut at the opercula were unable to school when wearing opaque eye covers. Although it is unlikely that blind saithe could school in the wild, the constraints of the apparatus permitted a demonstration of a role of the lateral line organ in schooling.

Animals↗