Micron. Oct;40(7) doi: / Epub May 3. Ultrastructure of the Alabama argillacea (Hübner) (Lepidoptera: Noctuidae). Feeding and dispersal behavior of the cotton leafworm, Alabama argillacea ( Hübner) (Lepidoptera: Noctuidae), on Bt and non-Bt cotton: implications for. Cotton Moth Alabama argillacea (Hübner, ). Family: Erebidae. Subfamily: Erebinae. Identification: Wing Span: Life History: Flight: Caterpillar Hosts.

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Temperature o C Exposure time h 6 12 18 24 Non-Bt cotton 22 1. Discovery and characterization of field arbillacea to Bt alabams To purchase short term access, please sign in to your Oxford Academic account above. Effects of transgenic Bt cotton on the population dynamic of natural enemies. Annu Rev Entomol These time gaps were represented by evaluation done at 6, 12, 18 and 24 h after the plant was infested with neonate A.

The ingestion of vegetable tissue by neonate A.

Modeling the effects of plant-to-plant gene flow, larval behavior, and refuge size on pest resistance to Bt cotton. Thus, the differential feeding behavior among A. We found that the feeding behavior of neonate A.

Whenever they are in high density populations, Lepidoptera cause great loss in crop yield. It indicates that in a few cases the larvae are more up to leave the Bt cotton plants than the non-Bt.

According to Wangila et al. Some were simple, such as killing the larvae by hand or allowing poultry to roam through the cotton fields and eat the larvae they find.

Alabama argillacea

Ecology and behavior of first instar larval Lepidoptera. Such results are relevant to handle the resistance of Bt cotton cultivars to A. The larvae were gathered in two categories: Consequently, it may result in lower population of A. J Econ Entomol From Wikipedia, the free encyclopedia. Current models of the mode of action of Bacillus thuringiensis insecticidal crystal argillacae During choice tests with neonate H.


Biocontrol N Informa A meta-analysis of the impacts of genetically modified crops. Knowledge generated by the current study will be useful to the development of more effective management programs for Bt cotton resistance to A. Thus, environmental conditions must be taken under consideration in studies on the larval movement of pest Lepidoptera Wangila et al.

In a letter to The American Agriculturalist in Septemberfarmer Thomas Affleck gave the following account of the argilkacea of A. Crambidae on non-Bt and transgenic Bt corn. Development and behavior of Spodoptera exigua Lepidoptera: The movement of A. Argillaacea larvae exposed to Alabamaa and non-Bt cotton plants, under different temperatures and time gap after hatching.

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Ultrastructure of the Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) midgut.

Older instars move vertically and feed on the younger, fresher foliage near the bolls and sometimes on the bolls themselves. Being a migratory species, the population of Alabama argillacea varied drastically from year-to-year and even location-to-location. Based on the number of larvae with vegetal tissue in their gut found on the plant and in the organza as well as on the argollacea of vegetal tissue ingested by the larvae.

Variability of endotoxin expression in Bt transgenic cotton.

alxbama Francisco de Sousa Ramalho E-mail: Potential effect of transgenic cotton on non-target herbivores in Vietnan. Don’t have alzbama account? Entomological Society of America members Sign in via society site.

However, the capacity or tendency of A. However, the inserting of a transgene in cotton cultivations may lead to non-expected changes in the plant-insect interaction Thu Cuc et al. P Manag Sci However, the interaction temperature vs exposure time affected the percentage of larvae found on the plant and the amount of vegetal tissue in their guts.


This was done to prevent the spread and reservoir of cotton pests. High temperatures lead to lower effect on Bt toxin production Chen et al. Potential factors impacting season-long expression of Cry1Ac in 13 commercial varieties of Bollgard cotton. The plant-plant dispersion may lead to the ingestion of insufficient amounts of the toxin, to the probability of increased survival of heterozygous and it may also potentially arhillacea up the resistance evolution.

The interaction involving temperature, exposure time and cultivar was not significant in terms of the percentage of larvae found on the plant and the amount of vegetal tissue in their guts. Nutrient self-selection by the omnivorous cockroach Supella longigalpa. Zlabama least one farmer was so distraught by the damage caused A. Dong and Li reported in greenhouse studies that Bt cotton plants significantly lose their insect resistance under high above 37 o C and low temperatures below 18 o C.

It is common to find a leaf exploration phase in Lepidoptera larvae, the time when they look for more palatable plant tissues. Preventing insect adaptation to insect-resistant crops: However, survival and pupal weight of H. It results in lower ingestion of vegetal tissue. A argillcea behavior was seen in larvae argillcea on cotton plants under other exposure times Table V.

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