In search of secondary plants to enhance the efficiency of cabbage seed weevil management
详细信息 查看全文
- 作者：Gabriella Kovács ; Riina Kaasik ; Tanel Kaart ; Luule Metspalu ; Anne Luik…
- 关键词：Ceutorhynchus obstrictus ; Mesopolobus morys ; Trichomalus perfectus ; Hymenopteran parasitoids ; Host plant preference ; Tritrophic interactions
- 刊名：BioControl
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：62
- 期：1
- 页码：29-38
- 全文大小：
- 刊物类别：Biomedical and Life Sciences
- 刊物主题：Entomology; Plant Pathology; Agriculture; Animal Ecology; Animal Biochemistry; Behavioral Sciences;
- 出版者：Springer Netherlands
- ISSN：1573-8248
- 卷排序：62
文摘
The infestation rate and parasitoid communities of Ceutorhynchus obstrictus (Marsham) (Coleoptera: Curculionidae) were assessed on seven spring sown brassicaceous plant species to find potential secondary plants that might help increase the parasitism rates of this serious oilseed pest. Over the three-year study, the average infestation rate of pods by C. obstrictus remained below 10 % for each plant species. Despite the low pest abundance, C. obstrictus was parasitized by hymenopteran parasitoids on all plant species, except on Eruca vesicaria subsp. sativa ((Mill.) Thell.). Parasitism rates were remarkably high: between 33.7 and 70.8 % on average and peaked at 94.7 % on Raphanus sativus (L.) var. oleiformis (Pers.). Not only was the parasitism rate high on R. sativus, but it also had a different parasitoid species composition consisting mainly of egg parasitoids (Mymaridae), while on the other plant species larval parasitoids (Pteromalidae) dominated. These findings are important for planning new sustainable pest management approaches.