ATTRACTIVITY OF EXOTIC FRUIT FLESHES FOR THE ABALONE, THE ORIENTAL WEATHERFISH, AND THE YELLOWTAIL

The attractivity of exotic fruit flesh- or other tissue-water extracts was statistically estimated on the basis of an exploratory behavior o f the abalone Haliotis discus, the oriental weatherfish Misgurnus angu illicaudatus, and the yellowtail Seriola quinqueradiata. The exotic fr uits tested were 24 specimens of 19 species: 19 specimens in the flesh , 3 in the rind, and 1 each in the milk and the albumen. The attractiv ity for fruit flesh was high in 6 species for abalone, 4 for oriental weatherfish, and 5 for yellowtail: kiwi fruit, grapefruit, feijoa, pep ino, wax apple, and babaco for abalone; banana, kiwi fruit, babaco, an d starfruit for oriental weatherfish; mango, papaya, pineapple, feijoa , and cherimoya for yellowtail. The common attractive fruit fleshes fo r all the three test animals were only two species, babaco and banana, though their attractivity was not so strong. The attractivity for fru it rinds was low in coconut for abalone and yellowtail, in banana for oriental weatherfish, and in grapefruit for abalone. The attractivity for coconut milk and albumen was high in the former for abalone and ye llowtail and in the latter for all the three test animals. Among these fruits, the most potent attractive fruits were coconut milk for abalo ne, banana flesh or coconut albumen for oriental weatherfish, and feij oa flesh for yellowtail. The attractivity of coconut milk, banana fles h, and feijoa flesh appreciably increased with the increase in concent ration for the corresponding animals.