Tessmer J W, Meek C L
Department of Entomology, Louisiana State University Agricultural Center, Baton Rouge 70803, USA.
J Med Entomol. 1996 Jul;33(4):665-9. doi: 10.1093/jmedent/33.4.665.
Spatial distributions of calliphorid pupae (based on adult emergence) from swine carcasses located in woods and pasture were determined during 4 seasons in southern Louisiana. Adult emergence was substantially greater in pastures than woods for all seasons except winter. Secondary screwworm, Cochliomyia macellaria (F.), was the predominant calliphorid species collected ( > 95%) during summer and fall; whereas, black blow fly, Phormia regina (Meigen), was the primary species (86%) during spring. The highest densities of calliphorid pupae per square meter were located within 0.9 m of the animal carcasses in the woods and the pasture (summer); however, the number of calliphorid pupae per square meter during the summer was substantially greater in the pastures than in the woods (2,370/m2 compared with 77/m2). Postfeeding calliphorid larvae preferred to disperse toward the southeastern quadrant during summer and spring and toward the southeastern to southwestern quadrants in fall. The winter evaluation period was the most prolonged (85 d), had the least number of emergent adults (only 6-11% of the populations that emerged in the other seasons), and consisted of predominantly, Phaenicia sericata (Meigen).
在路易斯安那州南部的4个季节里，确定了位于树林和牧场中的猪尸体上丽蝇蛹（基于成虫羽化情况）的空间分布。除冬季外，所有季节牧场中的成虫羽化量均显著高于树林。次生 Screwworm，即嗜尸性麻蝇（Cochliomyia macellaria (F.)），是夏季和秋季采集到的主要丽蝇种类（> 95%）；而黑丽蝇（Phormia regina (Meigen)）是春季的主要种类（86%）。每平方米丽蝇蛹密度最高的区域位于树林和牧场中动物尸体周围0.9米范围内（夏季）；然而，夏季牧场中每平方米丽蝇蛹的数量显著多于树林（分别为2370个/平方米和77个/平方米）。取食后的丽蝇幼虫在夏季和春季倾向于向东南象限扩散，秋季则向东南至西南象限扩散。冬季评估期最长（85天），羽化的成虫数量最少（仅占其他季节羽化种群的6 - 11%），且主要由丝光绿蝇（Phaenicia sericata (Meigen)）组成。
