Effect of Age - Specific Predation on Age Distribution and Survival of the Giant African
نویسنده
چکیده
The giant African snail, Achatina fulica Bowdich, one of the most destructive molluscan pests of many tropical areas of the world, became established in Hawaii November 30, 1936 (Pemberton, 1938). To control this pest predaceous snails, Gonaxis quadrilateralis (Preston), G. kibweziensis (E. A. Smith), and Euglandina rosea (Ferussac) were intro duced (Davis and Butler, 1964; Davis and Krauss, 1964) . According to Davis (personal communication, 1973) the population of A. fulica has declined markedly in recent years and numerous empty shells have been observed in many areas of Oahu. Using these shells a demographic an alysis was made in this study to determine the role of introduced pre dators on the biological control of this mollusk.
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