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1. Alternate host phenology affects survivorship, growth, and development of western corn rootworm (Coleoptera: Chrysomelidae) larvae

Author:
Chege, P.G.; Clark, T.L.; Hibbard, B.E.
Source:
Environmental entomology 2005 v.34 no.6 pp. 1441
ISSN:
0046-225X
Subject:
Diabrotica virgifera virgifera; rootworms; host plants; alternative hosts; weed hosts; grass weeds; phenology; larvae; mortality; insect growth; larval development
Abstract:
... The commercial release of transgenic maize with resistance to rootworms incorporated with glyphosate tolerance has become a reality, and questions have arisen regarding the impact of grassy weed phenology on the biology of the western corn rootworm, Diabrotica virgifera virgifera LeConte. A study to determine the impact of host plant phenology on the survivorship (percentage larval recovery), grow ...
Handle:
10113/893
DOI:
10.1603/0046-225X-34.6.1441

2. Behavior and predation of fruit fly larvae (Anastrepha spp.) (Diptera: Tephritidae) after exiting fruit in four types of habitats in tropical Veracruz, Mexico

Author:
Aluja, M.; Sivinski, J.; Rull, J.; Hodgson, P.J.
Source:
Environmental entomology 2005 v.34 no.6 pp. 1507
ISSN:
0046-225X
Subject:
Anastrepha; larvae; searching behavior; predation; Formicidae; mortality; host plants; fruits (plant anatomy); habitats; climatic factors; soil structure; soil depth; fruit trees
Abstract:
... Anastrepha spp. (Diptera: Tephritidae) larval behavior on the ground was quantified, and biotic and abiotic mortality factors were identified from the moment larvae exit fruit until they secure pupation sites in the soil in four environments that differed in climate, soil structure, and fruit tree composition in tropical Mexico (State of Veracruz). Distribution of pupae was influenced by fruit pos ...
Handle:
10113/895
DOI:
10.1603/0046-225X-34.6.1507

3. Effect of different assemblages of larval foods on Culex quinquefasciatus and Culex tarsalis (Diptera: Culicidae) growth and whole body stoichiometry

Author:
Peck, G.W.; Walton, W.E.
Source:
Environmental entomology 2005 v.34 no.4 pp. 767-774
ISSN:
0046-225X
Subject:
insect nutrition; insect growth; nutrient content; Culex quinquefasciatus; aquatic habitat; nutritional adequacy; food availability; Culex tarsalis; larvae; insect development; mortality
Abstract:
... We examined how mosquito life history parameters and whole body carbon (C), nitrogen (N), and phosphorus (P) content responded to changing C, N, and P content in food. The southern house mosquito, Culex quinquefasciatus Say, and the western encephalitis mosquito, Cx. tarsalis Coquillett, were reared in containers with diary waste water (high food and C, N, and P concentrations) or effluent from a ...
DOI:
10.1603/0046-225X-34.4.767

4. Enhanced activity of the nucleopolyhedrovirus of the fall armyworm (Lepidoptera: Noctuidae) on Bt-transgenic and nontransgenic sweet corn with a fluorescent brightener and a feeding stimulant

Author:
Farrar, R.R. Jr.; Shapiro, M.; Shepard, B.M.
Source:
Environmental entomology 2005 v.34 no.4 pp. 825
ISSN:
0046-225X
Subject:
Spodoptera frugiperda multiple nucleopolyhedrovirus; Spodoptera frugiperda; insect control; transgenic plants; Zea mays; Bacillus thuringiensis; crystal proteins; viral insecticides; pesticide adjuvants; stilbenes; phagostimulants; larvae; mortality
Abstract:
... The effects of a nutrient-based feeding stimulant, Coax, and a stilbene-based optical brightener, Blankophor P167, on the activity of the nucleopolyhedrovirus of the fall armyworm, Spodoptera frugiperda (J. E. Smith) (SfMNPV) on transgenic sweet corn, Zea mays L., expressing a CryIA(b) toxin from Bacillus thuringiensis (Berliner), were studied in the laboratory. Both Coax and Blankophor P167 incre ...
Handle:
10113/822
DOI:
10.1603/0046-225X-34.4.825

5. Laboratory evaluation of virulence of heterorhabditid nematodes to Plodia interpunctella Hubner (Lepidoptera: Pyralidae)

Author:
Mbata, G.N.; Shapiro-Ilan, D.I.
Source:
Environmental entomology 2005 v.34 no.3 pp. 676
ISSN:
0046-225X
Subject:
Plodia interpunctella; entomopathogenic nematodes; biological control agents; Heterorhabditis; virulence; larvae; adult insects; mortality; oviposition; storage insects; insect control
Abstract:
... The Indianmeal moth, Plodia interpunctella (Hubner), is a cosmopolitan pest of stored products, infesting most commodities in warehouses and grain bins. We studied the susceptibility of Indianmeal moth adults and larvae to seven entomopathogenic nematode species and strains. The nematodes studied were Heterorhabditis bacteriophora Poinar (HP88, Lewiston, and Oswego strains); H. indica Poinar, Karu ...
Handle:
10113/846
DOI:
10.1603/0046-225X-34.3.676