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首页> 外文会议>Beltwide Cotton Conferences >Reproductive biology and survival of boll weevil on Cienfuegosia drummondii in South Texas
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Reproductive biology and survival of boll weevil on Cienfuegosia drummondii in South Texas

机译：南德克萨斯州Cienfuegosia Drummondii的Boll Weevil生殖生物学和生存

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Cienfuegosia drummondii is a malvaceous plant found in rangeland habitat in South Texas counties bordering the Gulf of Mexico. New knowledge was generated on this alternate host of the boll weevil, including delineation of plant habitat, fruiting phenology, seasonal occurrence and degree of infestation by boll weevil, and reproductive suitability for boll weevil. We found that C. drummondii can provide early season oviposition sites for boll weevil about 45 days prior to availability of cotton squares susceptible for oviposition, and that flower buds and fruit capsules of C. drummondii can be available for about four months after cotton stalk destruction deadlines. Boll weevil infestation of C. drummondii varied considerably between field sites and years, with the highest percent recorded after the regulated cotton production season. In the laboratory, weevils were reared for 4 generations when provided only buds and capsules of C. drummondii. In an outdoor screenhouse study, percent weevil survival from egg to adult on C. drummondii and cotton was 25.0 and 69.6, respectively. Seasonal populational increment of boll weevil on C. drummondii is unlikely, if not impossible most years, due to the host's fruiting phenology; however, there are windowsfor infestation, generally early and late, that could act as as a bridge to sustain weevil populations when cotton is not available as a host.
机译：Cienfuegosia Drummondii是一个在南德克萨斯州居住在南德克萨斯州居住的狂欢植物，毗邻墨西哥湾。在啤酒象鼻虫的这种备用宿主上产生了新的知识，包括划分植物栖息地，结果候选，季节性发生以及棉铃虫象鼻虫的侵染程度，以及棉铃象鼻虫的生殖适用性。我们发现C. Drummondii可以在含棉正方形易受影响的棉花方块的可用性之前为棉铃虫患者提供呼吸季节产卵站点，并且C. Drummondii的花蕾和水果胶囊可以在棉花秸秆毁灭后约四个月可用截止日期。 Boll象鼻虫的C. Drummondii的侵袭在现场网站和多年之间变化了很大的各种各样，在受监管的棉花生产季节后记录的最高百分比。在实验室中，只有只提供C. Drummondii的芽和胶囊，患者饲养4代4代。在室外屏幕学习中，百年百年百年百年百年鸡蛋对成人的百年百年饮品分别为25.0％和69.6。 C. Drummondii的季节性种群增量在C. drummondii上不太可能，如果不是可能的几年，因为主持人的结果候选;然而，普遍早期和迟到的是有侵犯的侵犯，这可能是当棉花作为主持人提供棉花群体时的桥梁。

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