アズキゾウムシとヨツモンマメゾウムシの生態に関する比較研究 : II.雌成虫の体サイズの違いと堆積穀層への侵入度

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Experiments were done under the laboratory condition of 24℃ and 16L-8D photoperiod. Female individuals of different body size were sampled from the culture keeping low population density condition. Males having same or smaller body size than each female were paired. Each single pair was released on a pile of 100 seeds of Vigna radiata made in the test tube(1.4 cm of radius and 16cm of depth). Number of eggs deposited on the surface of the seeds were counted after all the adults had died. C. maculatus laid its eggs much deeper than C.chinensis did, and even a largest female of C.maculatus could oviposit deeper than a smallest female of C.chinensis. This might be due to that C.maculatus and much slimmer and flatter body than C.chinensis. In C.chinensis the oviposition in a pile was limited to relatively upper zones irrespective of the body size. While, in C.maculatus smaller female oviposited deeper than larger one. In C.maculatus the proportion of abdominal length to body width and the relative fecundity to body size increased with absolute decrease of body size. While, in C.chinensis the correlations were vice versa.
日本応用動物昆虫学会の論文
1985-05-25