Hypoxia Treatment of Callosobruchus maculatus Females and Its Effects on Reproductive Output and Development of Progeny Following Exposure
Modified atmospheres present a residue-free alternative to fumigants for controlling postharvest pests of grain during storage. How sub-lethal applications of this method affects the reproductive fitness of target pests, however, is still not fully understood. We examined how low levels of ambient o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-06-01
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| Series: | Insects |
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| Online Access: | http://www.mdpi.com/2075-4450/7/2/26 |
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| author | Yan Yan Scott B. Williams Dieudonne Baributsa Larry L. Murdock |
| author_facet | Yan Yan Scott B. Williams Dieudonne Baributsa Larry L. Murdock |
| author_sort | Yan Yan |
| collection | DOAJ |
| description | Modified atmospheres present a residue-free alternative to fumigants for controlling postharvest pests of grain during storage. How sub-lethal applications of this method affects the reproductive fitness of target pests, however, is still not fully understood. We examined how low levels of ambient oxygen influence the reproduction of the female cowpea bruchid (Callosobruchus maculatus), a pest of cowpea. We used three low-oxygen atmospheres—2%, 5% and 10% (v/v) oxygen—and observed their effects on: (1) the number of eggs laid by bruchids compared to insects held in normoxic (~20% oxygen) conditions; (2) the total number of eggs laid; and (3) the number of progeny that reached maturity. Low oxygen did not significantly affect the number of eggs laid during 48 or 72 h of exposure, but 2% and 5% oxygen did negatively affected total egg production. Increasing the exposure time from 48 to 72 h further depressed lifetime reproductive output. Maternal and egg exposure to hypoxia reduced the number of progeny that reached adulthood. Lower adult emergence was observed from eggs laid under low oxygen and longer exposure times. These data demonstrate that hermetic conditions depress the egg-laying behavior of cowpea bruchids and the successful development of their progeny. |
| first_indexed | 2024-12-19T16:45:27Z |
| format | Article |
| id | doaj.art-d72957eadc4d4b3bae9368a2ffcc9066 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-12-19T16:45:27Z |
| publishDate | 2016-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-d72957eadc4d4b3bae9368a2ffcc90662022-12-21T20:13:40ZengMDPI AGInsects2075-44502016-06-01722610.3390/insects7020026insects7020026Hypoxia Treatment of Callosobruchus maculatus Females and Its Effects on Reproductive Output and Development of Progeny Following ExposureYan Yan0Scott B. Williams1Dieudonne Baributsa2Larry L. Murdock3Department of Entomology, China Agricultural University, Beijing 100193, ChinaDepartment of Entomology, Purdue University, West Lafayette, IN 47907, USADepartment of Entomology, Purdue University, West Lafayette, IN 47907, USADepartment of Entomology, Purdue University, West Lafayette, IN 47907, USAModified atmospheres present a residue-free alternative to fumigants for controlling postharvest pests of grain during storage. How sub-lethal applications of this method affects the reproductive fitness of target pests, however, is still not fully understood. We examined how low levels of ambient oxygen influence the reproduction of the female cowpea bruchid (Callosobruchus maculatus), a pest of cowpea. We used three low-oxygen atmospheres—2%, 5% and 10% (v/v) oxygen—and observed their effects on: (1) the number of eggs laid by bruchids compared to insects held in normoxic (~20% oxygen) conditions; (2) the total number of eggs laid; and (3) the number of progeny that reached maturity. Low oxygen did not significantly affect the number of eggs laid during 48 or 72 h of exposure, but 2% and 5% oxygen did negatively affected total egg production. Increasing the exposure time from 48 to 72 h further depressed lifetime reproductive output. Maternal and egg exposure to hypoxia reduced the number of progeny that reached adulthood. Lower adult emergence was observed from eggs laid under low oxygen and longer exposure times. These data demonstrate that hermetic conditions depress the egg-laying behavior of cowpea bruchids and the successful development of their progeny.http://www.mdpi.com/2075-4450/7/2/26Callosobruchus maculatushypoxiareproductionegg developmenthermetic storage |
| spellingShingle | Yan Yan Scott B. Williams Dieudonne Baributsa Larry L. Murdock Hypoxia Treatment of Callosobruchus maculatus Females and Its Effects on Reproductive Output and Development of Progeny Following Exposure Insects Callosobruchus maculatus hypoxia reproduction egg development hermetic storage |
| title | Hypoxia Treatment of Callosobruchus maculatus Females and Its Effects on Reproductive Output and Development of Progeny Following Exposure |
| title_full | Hypoxia Treatment of Callosobruchus maculatus Females and Its Effects on Reproductive Output and Development of Progeny Following Exposure |
| title_fullStr | Hypoxia Treatment of Callosobruchus maculatus Females and Its Effects on Reproductive Output and Development of Progeny Following Exposure |
| title_full_unstemmed | Hypoxia Treatment of Callosobruchus maculatus Females and Its Effects on Reproductive Output and Development of Progeny Following Exposure |
| title_short | Hypoxia Treatment of Callosobruchus maculatus Females and Its Effects on Reproductive Output and Development of Progeny Following Exposure |
| title_sort | hypoxia treatment of callosobruchus maculatus females and its effects on reproductive output and development of progeny following exposure |
| topic | Callosobruchus maculatus hypoxia reproduction egg development hermetic storage |
| url | http://www.mdpi.com/2075-4450/7/2/26 |
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