The possible role of HCN in the biology and feeding behavior of the cassava burrowing bug (Cyrtomenus bergi Froeschner: Cydnidae: Hemiptera)
The burrowing bug, C. bergi (Hymenopetra: Cydnidae) was first recorded as a cassava pest in Valle, Colombia, in 1979. Nymphs and adults of this subterranean sucking insect feed on cassava roots by means of a thin, strong stylet. As it feeds, it inoculates the roots with soil-borne pathogens such as...
| Main Authors: | , |
|---|---|
| Format: | Conference Paper |
| Language: | Inglés |
| Published: |
International Center for Tropical Agriculture
1993
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/55699 |
| _version_ | 1855517830988955648 |
|---|---|
| author | Bellotti, T. Arias, V.B. |
| author_browse | Arias, V.B. Bellotti, T. |
| author_facet | Bellotti, T. Arias, V.B. |
| author_sort | Bellotti, T. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The burrowing bug, C. bergi (Hymenopetra: Cydnidae) was first recorded as a cassava pest in Valle, Colombia, in 1979. Nymphs and adults of this subterranean sucking insect feed on cassava roots by means of a thin, strong stylet. As it feeds, it inoculates the roots with soil-borne pathogens such as Diplodia, Fusarium, Phytopthora and Phythium spp. Brown or black lesions develop on the white, fleshy root, rendering it commercially unacceptable. Cassava root darnage can reach 70 to 80 of total roots with more than 50 reduction in starch content. Additional hosts include onion, peanuts, maize, sorghum, sugar-cane, coffee, pasture grasses, potatoes and numerous weed species. Studies show that C. bergi develops faster on maize than on cassava, and prefers maize over cassava in free choice test (78 vs 22). Field trials suggest resistance to C. bergi may be related to HCN content of the roots. In laboratory tests adults and nymphs fed on a high HCN clone had larger nymphal development, reduced adult longevity, reduced egg production and increased mortality. On CMC 40 (low HCN) nymphal mortality was 56, while on high HCN clone MCol 1684, mortality reached 84. On CMC 40, 50 mortality occurred at 35 days (r2=0.96); for MCol 1684, at 28 days (r2= 0.98). Highest mortality occurred during the first two instars when nymphs primarily feed on the root peel. These results constitute one of the few documented cases where HCN content in cassava may be related to arthropod resistance. |
| format | Conference Paper |
| id | CGSpace55699 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1993 |
| publishDateRange | 1993 |
| publishDateSort | 1993 |
| publisher | International Center for Tropical Agriculture |
| publisherStr | International Center for Tropical Agriculture |
| record_format | dspace |
| spelling | CGSpace556992024-01-09T09:48:14Z The possible role of HCN in the biology and feeding behavior of the cassava burrowing bug (Cyrtomenus bergi Froeschner: Cydnidae: Hemiptera) Bellotti, T. Arias, V.B. manihot esculenta cyrtomenus bergi feeding habits roots cyanides hábitos alimentarios raíces cianuros The burrowing bug, C. bergi (Hymenopetra: Cydnidae) was first recorded as a cassava pest in Valle, Colombia, in 1979. Nymphs and adults of this subterranean sucking insect feed on cassava roots by means of a thin, strong stylet. As it feeds, it inoculates the roots with soil-borne pathogens such as Diplodia, Fusarium, Phytopthora and Phythium spp. Brown or black lesions develop on the white, fleshy root, rendering it commercially unacceptable. Cassava root darnage can reach 70 to 80 of total roots with more than 50 reduction in starch content. Additional hosts include onion, peanuts, maize, sorghum, sugar-cane, coffee, pasture grasses, potatoes and numerous weed species. Studies show that C. bergi develops faster on maize than on cassava, and prefers maize over cassava in free choice test (78 vs 22). Field trials suggest resistance to C. bergi may be related to HCN content of the roots. In laboratory tests adults and nymphs fed on a high HCN clone had larger nymphal development, reduced adult longevity, reduced egg production and increased mortality. On CMC 40 (low HCN) nymphal mortality was 56, while on high HCN clone MCol 1684, mortality reached 84. On CMC 40, 50 mortality occurred at 35 days (r2=0.96); for MCol 1684, at 28 days (r2= 0.98). Highest mortality occurred during the first two instars when nymphs primarily feed on the root peel. These results constitute one of the few documented cases where HCN content in cassava may be related to arthropod resistance. 1993 2015-01-28T14:21:42Z 2015-01-28T14:21:42Z Conference Paper https://hdl.handle.net/10568/55699 en Open Access International Center for Tropical Agriculture Bellotti, Anthony C.; Arias V., Bernardo. 1993. The possible role of HCN in the biology and feeding behavior of the cassava burrowing bug (Cyrtomenus bergi Froeschner: Cydnidae: Hemiptera). In: Roca, William M.; Thro, Ann Marie (eds.). International Scientific Meeting Cassava Biotechnology Network (1, 1992, Cartagena de Indias, Colombia). Proceedings. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. p. 406-409. (Working document no. 123) |
| spellingShingle | manihot esculenta cyrtomenus bergi feeding habits roots cyanides hábitos alimentarios raíces cianuros Bellotti, T. Arias, V.B. The possible role of HCN in the biology and feeding behavior of the cassava burrowing bug (Cyrtomenus bergi Froeschner: Cydnidae: Hemiptera) |
| title | The possible role of HCN in the biology and feeding behavior of the cassava burrowing bug (Cyrtomenus bergi Froeschner: Cydnidae: Hemiptera) |
| title_full | The possible role of HCN in the biology and feeding behavior of the cassava burrowing bug (Cyrtomenus bergi Froeschner: Cydnidae: Hemiptera) |
| title_fullStr | The possible role of HCN in the biology and feeding behavior of the cassava burrowing bug (Cyrtomenus bergi Froeschner: Cydnidae: Hemiptera) |
| title_full_unstemmed | The possible role of HCN in the biology and feeding behavior of the cassava burrowing bug (Cyrtomenus bergi Froeschner: Cydnidae: Hemiptera) |
| title_short | The possible role of HCN in the biology and feeding behavior of the cassava burrowing bug (Cyrtomenus bergi Froeschner: Cydnidae: Hemiptera) |
| title_sort | possible role of hcn in the biology and feeding behavior of the cassava burrowing bug cyrtomenus bergi froeschner cydnidae hemiptera |
| topic | manihot esculenta cyrtomenus bergi feeding habits roots cyanides hábitos alimentarios raíces cianuros |
| url | https://hdl.handle.net/10568/55699 |
| work_keys_str_mv | AT bellottit thepossibleroleofhcninthebiologyandfeedingbehaviorofthecassavaburrowingbugcyrtomenusbergifroeschnercydnidaehemiptera AT ariasvb thepossibleroleofhcninthebiologyandfeedingbehaviorofthecassavaburrowingbugcyrtomenusbergifroeschnercydnidaehemiptera AT bellottit possibleroleofhcninthebiologyandfeedingbehaviorofthecassavaburrowingbugcyrtomenusbergifroeschnercydnidaehemiptera AT ariasvb possibleroleofhcninthebiologyandfeedingbehaviorofthecassavaburrowingbugcyrtomenusbergifroeschnercydnidaehemiptera |