Group effect in the gypsy moth (Lymantria dispar, Lepidoptera, Lymantriidae) related to the population characteristics and food composition

Пономарев, В. И.; Andreeva, E. M.; Shatalin, N. V.

doi:10.1134/s0013873809030026

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…depending on a density of natural population . Besides, the results obtained earlier by some authors experimentally confirm that some indices, including nutritional, are determined by the density of larvae during their eating of foliage or needles (Vshivkova, 1982;Ponomarev et al, 2009). We have confirmed these data during cultivation of larvae on the IRS, and it was shown that distinctions between single and group larvae regarding the complex of nutritional indices had different force during depression and increase in population size.…”

Section: Larval Densitysupporting

confidence: 76%

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What can nutritional indices tell us about gypsy moth larvae (Lymantria dispar L.)?

Andreeva

2010

PESTIC PHYTOMED

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SUMMARYIn the submitted work, important factors for planning out experiments for studying nutritional indices, whose choice may affect research results, and opportunities for using the indices of feeding to study the ecology of species are evaluated. The dependence of nutritional indices on great many factors and significant variation in their absolute values over different years make possible their research only as part of a complex issue together with population factors and external conditions. A careful comparison of results from different studies is made.

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Section: Larval Densitysupporting

confidence: 76%

“…First of all, it can be the forest (in analyses of larval indices from different micropopulations), as well as hydrothermal conditions during the parental generation of larvae (precipitation, temperature, cold periods during larval development) Ponomarev et al, 2009).…”

Section: Duration Of Experimentsmentioning

confidence: 99%

What can nutritional indices tell us about gypsy moth larvae (Lymantria dispar L.)?

Andreeva

2010

PESTIC PHYTOMED

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“…Within Lepidoptera, phase polyphenism seems to be concentrated within (or restricted to) the Noctuidae. The lymantriid gypsy moth ( Lymantria dispar ) also seems to present features of phase polyphenism [58], but the Lymantriidae, Noctuidae and Arctiidae sit together within the superfamily Noctuoidea. The exact relation between these families remains a matter for debate [59] so determining whether lepidopterans with phase polyphenism are mono- or polyphyletic may not be possible at this stage.…”

Section: Discussionmentioning

confidence: 99%

Two's a Crowd: Phenotypic Adjustments and Prophylaxis in Anticarsia gemmatalis Larvae Are Triggered by the Presence of Conspecifics

et al. 2013

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Defence from parasites and pathogens involves a cost. Thus, it is expected that organisms use this only at high population densities, where the risk of pathogen transmission may be high, as proposed by the "density-dependent prophylaxis" (DDP) hypothesis. These predictions have been tested in a wide range of insects, both in comparative and experimental studies. We think it pertinent to consider a continuum between solitarious and gregarious living insects, wherein: (1) solitarious insects are those that are constitutively solitary and do not express any phenotypic plasticity, (2) the middle of the continuum is represented by insects that are subject to fluctuations in local density and show a range of facultative and plastic changes; and (3) constitutively gregarious forms live gregariously and show the gregarious phenotype even in the absence of crowding stimuli. We aimed to chart some of the intermediary continuum with an insect that presents solitarious aspects, but that is subject to fluctuations in density. Thus, Anticarsia gemmatalis (Lepidoptera: Noctuidae) larvae reared at higher densities showed changes in coloration, a greater degree of encapsulation, had higher hemocyte densities and were more resistant to Baculovirus anticarsia, but not to Bacillus thuringiensis. Meanwhile, with increased rearing density there was reduced capsule melanization. Hemocyte density was the only variable that did not vary according to larval phenotype. The observed responses were not a continuous function of larval density, but an all-or-nothing response to the presence of a conspecific. As A. gemmatalis is not known for gregarious living, yet shows these density-dependent changes, it thus seems that this plastic phenotypic adjustment may be a broader phenomenon than previously thought.

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Modeling the Scenarios of Collapse of the Commercial Aquatic Populations off the Coast of Canada and Alaska*

Perevaryukha

2020

Cybern Syst Anal

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Group effect in the gypsy moth (Lymantria dispar, Lepidoptera, Lymantriidae) related to the population characteristics and food composition

Cited by 4 publications

References 4 publications

What can nutritional indices tell us about gypsy moth larvae (Lymantria dispar L.)?

What can nutritional indices tell us about gypsy moth larvae (Lymantria dispar L.)?

Two's a Crowd: Phenotypic Adjustments and Prophylaxis in Anticarsia gemmatalis Larvae Are Triggered by the Presence of Conspecifics

Modeling the Scenarios of Collapse of the Commercial Aquatic Populations off the Coast of Canada and Alaska*

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