Diapause Response of the Boll Weevil (Coleoptera: Curculionidae) to Feeding Period Duration and Cotton Square Size. Issue 5 (31st August 2018)
- Record Type:
- Journal Article
- Title:
- Diapause Response of the Boll Weevil (Coleoptera: Curculionidae) to Feeding Period Duration and Cotton Square Size. Issue 5 (31st August 2018)
- Main Title:
- Diapause Response of the Boll Weevil (Coleoptera: Curculionidae) to Feeding Period Duration and Cotton Square Size
- Authors:
- Spurgeon, Dale W
Suh, Charles P -C
Esquivel, Jesus F - Abstract:
- Abstract: Distribution of the boll weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), in the United States has been greatly reduced by eradication efforts. Still, it remains a key pest of cotton ( Gossypium spp., [Malvales: Malvaceae]) in the New World, and has proven difficult to eliminate from Mexico and from southern Texas. In those regions, improved knowledge of boll weevil overwintering ecology may benefit efforts by eradication and management programs. Adult diapause in the boll weevil is well documented, but influences of the feeding period duration between adult eclosion and assessment of diapause remain unstudied. We examined diapause incidence and associated survival for weevils fed for 7, 14, or 21 d after adult eclosion. Diapause incidence of females was less influenced by feeding duration compared with males. For males, highest diapause incidence occurred after 14 d of feeding compared with 7 or 21 d. Host-free survival tended to be higher after 14 d of feeding compared with 7 or 21 d, although many weevils were long-lived (≥80 d) after each feeding period duration. Males exhibited higher survival compared with females, and survival was higher for weevils fed large flower buds (squares) compared with smaller squares. Survival was most influenced by temperature; longevity increased with decreasing temperature except at the lowest temperature (12.8°C). These results suggest an optimal feeding period for induction of diapause and maximizedAbstract: Distribution of the boll weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), in the United States has been greatly reduced by eradication efforts. Still, it remains a key pest of cotton ( Gossypium spp., [Malvales: Malvaceae]) in the New World, and has proven difficult to eliminate from Mexico and from southern Texas. In those regions, improved knowledge of boll weevil overwintering ecology may benefit efforts by eradication and management programs. Adult diapause in the boll weevil is well documented, but influences of the feeding period duration between adult eclosion and assessment of diapause remain unstudied. We examined diapause incidence and associated survival for weevils fed for 7, 14, or 21 d after adult eclosion. Diapause incidence of females was less influenced by feeding duration compared with males. For males, highest diapause incidence occurred after 14 d of feeding compared with 7 or 21 d. Host-free survival tended to be higher after 14 d of feeding compared with 7 or 21 d, although many weevils were long-lived (≥80 d) after each feeding period duration. Males exhibited higher survival compared with females, and survival was higher for weevils fed large flower buds (squares) compared with smaller squares. Survival was most influenced by temperature; longevity increased with decreasing temperature except at the lowest temperature (12.8°C). These results suggest an optimal feeding period for induction of diapause and maximized host-free longevity. These findings may permit improved timing of late-season insecticide treatments aimed at reducing overwintering populations, and thereby improve effectiveness of eradication and management programs. … (more)
- Is Part Of:
- Journal of insect science. Volume 18:Issue 5(2018)
- Journal:
- Journal of insect science
- Issue:
- Volume 18:Issue 5(2018)
- Issue Display:
- Volume 18, Issue 5 (2018)
- Year:
- 2018
- Volume:
- 18
- Issue:
- 5
- Issue Sort Value:
- 2018-0018-0005-0000
- Page Start:
- Page End:
- Publication Date:
- 2018-08-31
- Subjects:
- flower-bud size -- dormancy -- temperature -- cotton -- host-free survival
Insects -- Periodicals
Entomology -- Periodicals
Arthropoda -- Periodicals
Insects
Arthropods
Biology
Ecology
Entomologie -- Périodiques
Entomology
Insects
Electronic journals
Periodicals
595.05 - Journal URLs:
- http://jinsectscience.oxfordjournals.org/ ↗
http://bibpurl.oclc.org/web/1532 http://www.insectscience.org/ ↗
http://bibpurl.oclc.org/web/9276 http://pubmedcentral.com/tocrender.fcgi?journal=204 ↗
http://www.bioone.org/bioone/?request=get-journals-list&issn=1536-2442 ↗
http://www.oxfordjournals.org/en/ ↗ - DOI:
- 10.1093/jisesa/iey084 ↗
- Languages:
- English
- ISSNs:
- 1536-2442
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
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