A rapidly progressing, deadly disease of Actias selene (Indian moon moth) larvae associated with a mixed bacterial and baculoviral infection

Skowron, Marta A.; Guzow-Krzemińska, Beata; Barańska, Sylwia; Jędrak, Paulina; Węgrzyn, Grzegorz

doi:10.1007/s12038-015-9538-0

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…Pathogen‐killed larvae went from apparently healthy to dead, with their integument turning a distinctive black colour, in a short (1–2 day) period. Pathogen presence was confirmed via dissection and microscopy (G. H. Boettner, unpublished data); the dark fluid that we found oozing from the dead larvae is typical of viral epizootics in captive stocks of other saturniid moths (Skowron et al , ). Although larvae occasionally died in the field sleeves, none exhibited the same symptoms as those dying post‐retrieval.…”

Section: Resultssupporting

confidence: 56%

Reduced Compsilura concinnata parasitism of New England saturniid larvae

Baranowski

Conroy

Boettner

et al. 2019

Agri and Forest Entomology

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1 In the northeastern U.S.A., the non-native generalist parasitoid Compsilura concinnata, introduced in the early 20th Century to control forest pests, has been linked to the decline of giant silk moths (Lepidoptera: Saturniidae). 2 Field research conducted in New England in the late 1990s on two saturniid species, Hyalophora cecropia and Callosamia promethea, found that C. concinnata parasitized 81% and 68%, respectively, when larvae were reared outdoors and replaced weekly. These parasitism rates, extrapolated over the larval period, would prevent any larvae from reaching pupation. 3 In 2017 and 2018, this field experiment was repeated using these same two saturniid species for the same duration and at the same site, location and time of year. In 2017, C. concinnata parasitized only 19% of H. cecropia larvae and 1% of C. promethea larvae; in 2018, parasitism rates were 3% and 0%, respectively.

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Section: Resultssupporting

confidence: 56%

Reduced Compsilura concinnata parasitism of New England saturniid larvae

Baranowski

Conroy

Boettner

et al. 2019

Agri and Forest Entomology

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MmoSTI restriction endonuclease, isolated from Morganella morganii infecting a tropical moth, Actias selene, cleaving 5′-|CCNGG-3′ sequences

et al. 2015

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A type II restriction endonuclease, MmoSTI, from the pathogenic bacterium Morganella morganii infecting a tropical moth, Actias selene, has been detected and biochemically characterized, as a potential etiological differentiation factor. The described REase recognizes interrupted palindromes, i.e., 5′-CCNGG-3′ sequences and cleaves DNA leaving 5-nucleotide (nt) long, single-stranded (ss), 5′-cohesive ends, which was determined by three complementary methods: (i) cleavage of custom and standard DNA substrates, (ii) run-off sequencing of cleavage products, and (iii) shotgun cloning and sequencing of bacteriophage lambda (λ) DNA digested with MmoSTI. MmoSTI, the first 5′-CCNGG-3′ REase characterized from M. morganii, is a neoschizomer of ScrFI, which cleaves DNA leaving 1-nt long, ss, 5′-cohesive ends. It is a high-frequency cutter and can be isolated from easily cultured bacteria, thus it can potentially serve as a tool for DNA manipulations.

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Gregariousness in lepidopteran larvae

Qian,

Wen,

Guo

et al. 2024

Insect Science

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The gregarious lifestyle of lepidopteran larvae is diverse and shaped by a complex interplay of ecological and evolutionary factors. Our review showed that the larval‐aggregation behavior has been reported in 23 lepidopteran families, indicating multiple evolution of this behavior. Some larvae live in sibling groups throughout all larval instars and even pupation stages, which may result from the kin‐selection. In contrast, group fusion may occur among different sibling or foraging groups of larvae and form larger aggregates, and the gregariousness of these species might be driven by the group‐selection. While group size and foraging patterns vary greatly across species, it is generally associated with improved larval survivorship and accelerated development. However, the advantages of group living, such as facilitating feeding activities, adjusting the temperature, and defending natural enemies, may diminish along with development, with strong intraspecific competition occurring at later instars, even when food is abundant. Therefore, the group sizes and fission–fusion dynamics of certain gregarious lepidopteran larvae may be a consequence of their cost–benefit balance depending on various biotic and abiotic factors. Trail and aggregation pheromones, silk trails, or body contact contribute to collective movement and group cohesion of gregarious lepidopteran larvae. However, frequent contact among group members may cause the horizontal transmission of pathogens and pesticides, which may bring an integrated pest management strategy controlling gregarious lepidopteran pests.

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A rapidly progressing, deadly disease of Actias selene (Indian moon moth) larvae associated with a mixed bacterial and baculoviral infection

Cited by 3 publications

References 16 publications

Reduced Compsilura concinnata parasitism of New England saturniid larvae

Reduced Compsilura concinnata parasitism of New England saturniid larvae

MmoSTI restriction endonuclease, isolated from Morganella morganii infecting a tropical moth, Actias selene, cleaving 5′-|CCNGG-3′ sequences

Gregariousness in lepidopteran larvae

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