雌雄福寿螺取食和对异性选择行为的差异  

Differences of female and male Pomacea canaliculata in foraging and heterosexual choice

作　　者：徐武兵[1] 钟秋华[1] 李林峰[1] 章家恩[1] 罗明珠[1] 赵本良[1] 秦钟[1] 

机构地区：[1]华南农业大学农学院生态学系,广州510642

出　　处：《生态学杂志》2011年第11期2528-2533,共6页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(30770403);广东省科技计划项目(2007B020709007);广东省高等学校高层次人才项目(粤教师函【2010】79号);华南农业大学农学院"金穗"创新计划项目(JS2009018)资助

摘　　要：福寿螺(Pomacea canaliculata)是华南地区一种危害十分严重的外来入侵生物。通过室内培养,测定了雌雄福寿螺的摄食率和肝糖原含量的差异,并利用自制的"T形槽"和"三室连通器"分别观察了雌雄福寿螺对食物的灵敏程度和对异性的选择。结果表明:无论在饥饿状态和饱食状态下,雌螺摄食率都显著高于雄螺(P<0.01);在饥饿状态下,雌螺相对于雄螺在选择食物时的反应时间更短,它们对食物的选择频率没有显著差异;雌螺在饥饿状态下对食物的选择频率和选择食物时的反应时间较其饱食状态下分别得到了提高和缩短,而雄螺则无此现象;在繁殖季节(8月)雌螺的肝糖原含量显著高于雄螺(P<0.01),而在非繁殖季节(11月)无显著差异;在三室连通器中,雄螺更多的是选择有雌螺的一室,雌螺在分别有雌、雄螺吸引源的两室聚集的螺数不存在显著差异,表明雄螺可以被雌螺吸引,而雌螺被雄螺吸引效果不明显。Pomacea canaliculata is an invasive alien species very harmful to the rice production in South China. In this paper, an indoor incubation test was conducted to study the differences in the foraging rate and hepatic glycogen content of female and male P. canaliculata, and the self- designed T-maze and three-room connected device were adopted to observe the food selection and heterosexual choice of the females and males. At both hungry and full states, the females had a significantly higher foraging rate than the males. At hungry state, the females spent a shorter time for food selection but the selection frequency was not significantly different from that of the males, and also, the females spent a shorter time and had a higher frequency for food selection than at full state whereas the males didn＇t show any difference. In reproductive season （August）, the females stored more hepatic glycogen in their body, but did not in non-reproductive season （ No- vember）. The males more chose the rooms with females whereas the females had less choice for males, indicating that the females were attracted by the males, while the latter had less attraction to the females.

关 键 词：福寿螺 取食 肝糖原 性选择 

分 类 号：S433[农业科学—农业昆虫与害虫防治]