Preliminary studies of the effects of an induced phosphate deficiency on carbohydrate-nitrogen ratios inAlternanthera philoxeroides [Centrospermae: Amaranthacea] and on the feeding ofAgasicles hygrophila [Col.: Chrysomelidae]

Maddox, D. M.; McCready, R. M.

doi:10.1007/bf02371596

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…Local variability in nutrients available to host plants may lead to control in some parts of the site but not others. Although research into nutritional deficiencies has been conducted to address alligatorweed inter-plant variability in attack rate by A. hygrophila, past examinations focused on feeding attraction and adult consumption of plants, mostly ignoring importance of nitrogen to larvae (Maddox and McCready, 1975;Maddox and Rhyne, 1975). Levels of nitrogen are often higher in young, newly-developing leaves of many species (Mattson Jr., 1980).…”

Section: Discussionmentioning

confidence: 99%

Variability in weed biological control : effects of foliar nitrogen on larval development and dispersal of the alligatorweed flea beetle, Agasicles hygrophila

Harms¹,

Cronin²

2021

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Host quality can have dramatic effects on performance of biological control agents but its importance is understudied. We used a combination of field measurements and laboratory experiments to determine the range of foliar nitrogen (FN) that larvae of the alligatorweed flea beetle (Agasicles hygrophila) are exposed to in the field and its importance to larval development and dispersal. Seasonal variability in FN was assessed at field sites spanning southern to northern Louisiana every 2–3 weeks during the growing season for four years. In a series of laboratory experiments, alligatorweed FN was manipulated to examine its influence on larval development and survival (under different temperature regimes), adult biomass, and dispersal of the biological control agent, A. hygrophila. Foliar nitrogen and rearing temperature had strong independent effects on larval development rate. We demonstrated that increasing nitrogen in leaf tissues shortens larval A. hygrophila developmental time and increases survival to adulthood, regardless of exposure temperature during development. It also suggests that foliar nitrogen may have important effects on biological control of alligatorweed, particularly as a result of seasonal variation in temperature and plant nutrition at field sites and could contribute to observed variation in A. hygrophila efficacy in the field.

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Section: Discussionmentioning

confidence: 99%

Variability in weed biological control : effects of foliar nitrogen on larval development and dispersal of the alligatorweed flea beetle, Agasicles hygrophila

Harms¹,

Cronin²

2021

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“…For example, a flea beetle, Agasicles hygrophila (Selman & Vogt) (Coleoptera: Chrysomelidae), from South America was released in the southeastern United States to control A. philoxeroides (Hawkes et al 1967). Introduction of A. hygrophila resulted in a positive ecological shift in the aquatic plant community in most of the areas where it was released (Maddox and McCready 1975). This beetle was imported from Florida, and introduced into four areas of China in 1987 (Wang et al 1988, Ma et al 2003).…”

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confidence: 99%

Host Range of Herpetogramma basalis (Lepidoptera: Crambidae), a Biological Control Agent for the Invasive Weed Alternanthera philoxeroides (Centrospermae: Amaranthaceae) in China

Shihai

Cong

et al. 2019

Journal of Insect Science

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Alternanthera philoxeroides (Mart.) Griseb. is an invasive herbaceous amphibious weed species in China. A pyralid moth Herpetogramma basalis (Walker) was discovered feeding on A. philoxeroides through field surveys and may be a potentially useful biocontrol agent. To determine the host range of H. basalis and evaluate its potential to control A. philoxeroides, no-choice and multiple-choice tests were conducted. Herpetogramma basalis fed on target weeds and 29 nontarget plant species. In addition to the target weed A. philoxeroides, H. basalis developed to adult on eight other nontarget species. Herpetogramma basalis survived to adulthood successfully on A. philoxeroides and less successfully on several other Amaranthaceae species. In multiple-choice studies, H. basalis showed a strong oviposition preference for A. philoxeroides over Amaranthus tricolor L. (Centrospermae: Amaranthaceae). Amaranthus tricolor was the only crop plant that supported the complete development of H. basalis. We cautiously recommend H. basalis for the biological control of A. philoxeroides in China.

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Effects of cadmium on two biocontrol insects and their host weeds

Quimby¹,

Frick²,

Wauchope³

et al. 1979

Bull. Environ. Contam. Toxicol.

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Preliminary studies of the effects of an induced phosphate deficiency on carbohydrate-nitrogen ratios inAlternanthera philoxeroides [Centrospermae: Amaranthacea] and on the feeding ofAgasicles hygrophila [Col.: Chrysomelidae]

Cited by 3 publications

References 17 publications

Variability in weed biological control : effects of foliar nitrogen on larval development and dispersal of the alligatorweed flea beetle, Agasicles hygrophila

Variability in weed biological control : effects of foliar nitrogen on larval development and dispersal of the alligatorweed flea beetle, Agasicles hygrophila

Host Range of Herpetogramma basalis (Lepidoptera: Crambidae), a Biological Control Agent for the Invasive Weed Alternanthera philoxeroides (Centrospermae: Amaranthaceae) in China

Effects of cadmium on two biocontrol insects and their host weeds

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