manufacturers offer spinners with the perforated blades, like Daiwa Sliver
Creek R, Extreme Fishing Absolute and other, arguing that sounds (hydrodynamic fluctuations) produced by holes in the rotating blades
to our field experiments, this marketing course is incorrect.
In these experiments, 3 gr Extreme Fishing Absolute spinners with the perforated and blank silver blades were
compared with each other. Lures had 6 holes at the blade edge, inluding the
clevis’s hole. One half of lures, marked AP, had intact perforated blades. In
the other half of lures, marked AB, 5 holes in the blades were covered from the inside with
the transparent waterproof adhesive tape.
sabrefish, Pelecus cultratus, were selected for experiments
because these fish were abundant in the test localities and preyed on baitfish
mainly in the windless (that is acoustically favourable: Protasov, 1965)
evening twilights and nights. Lures were tested (near the village Nedanchichi,
the middle part of Dniepro river, in June) from the evening twilight to
midnight in the localities, where sabrefish preyed mainly on juvenile
bleak, Alburnus alburnus, and roach, Rutilus rutilus.
estimated locality of sabrefish, 12 presentations (cast and retrieving) of
lures were made: 3 with AP, 3 with AB, 3 with AP and 3 with AB. After the 10-15 min rest, this
procedure was repeated in the reverse order. In total, 37 sabrefish (length of 30-40 cm) were
landed for two nights: 20 on AP and 17 on AB lures. To estimate mean
differences for field data, fish were group per each 6 lure (for AP and AB)
presentations. In final, sabrefish, according to Student’s t-test, showed no
reliable preference in favor of perforated (AP) or blank (AB) Absolute spinners.
post given below to understand why sabrefish may ignore, like other fish, sounds produced by the holes
in the perforated spinner blades.
fish do not respond to sounds of rattling wobblers
attention that audiograms of the Mepps spinners, similar to the Extreme Fishing
Absolute spinners, is mainly represented by the powerful rhythmic sounds
produced by rotating blades (click here to hear sounds). These rhythmic sounds,
with the frequency that is equal to the frequency of blade rotation, overpower
any other rhythmic and noise sounds of any spinners.
V.R. 1965. The bioacoustics of fishes. Moscow,