Goodbrod J R, Goff M L
Department of Entomology, University of Hawaii, Manoa, Honolulu 96822.
J Med Entomol. 1990 May;27(3):338-43. doi: 10.1093/jmedent/27.3.338.
Rearing of Chrysomya megacephala (F.) and Chrysomya rufifacies (Macquart) in pure cultures at seven different population densities (larvae per gram of liver) demonstrated an inverse relationship between density and the duration of the larval stage. In pure cultures, larval mortality rates decreased with increasing density until an optimum density was reached (8 larvae/g liver for C. megacephala and 10 larvae/g liver for C. rufifacies), then decreased directly with density. Puparial and adult weights varied inversely with density for both species in pure cultures. Internal feeding mass temperatures were above ambient temperatures for all cultures, with maximum temperatures recorded in cultures with 20 and 40 larvae/g liver for G. rufifacies and C. megacephala, respectively. In paired encounters, larvae of C. rufifacies were cannibalistic and predatory on C. megacephala larvae after the first instar. In mixed cultures of these two species, the larval mortality of C. rufifacies remained relatively stable, whereas the larval mortality of C. megacephala increased directly with population density.
在七种不同种群密度（每克肝脏中的幼虫数量）下对大头金蝇（Chrysomya megacephala (F.)）和红尾肉蝇（Chrysomya rufifacies (Macquart)）进行纯培养，结果表明密度与幼虫期持续时间呈负相关。在纯培养中，幼虫死亡率随密度增加而降低，直至达到最佳密度（大头金蝇为每克肝脏8只幼虫，红尾肉蝇为每克肝脏10只幼虫），然后随密度直接下降。在纯培养中，两种蝇的蛹重和成虫重均与密度呈负相关。所有培养物的内部取食团温度均高于环境温度，红尾肉蝇和大头金蝇分别在每克肝脏有20只和40只幼虫的培养物中记录到最高温度。在成对相遇时，红尾肉蝇的幼虫在一龄后会同类相食并捕食大头金蝇的幼虫。在这两个物种的混合培养中，红尾肉蝇的幼虫死亡率保持相对稳定，而大头金蝇的幼虫死亡率则随种群密度直接增加。
