Density dependent development in pest and domestic Drosophilidae species

Canadian Journal of Zoology, Journal Year: 2024, Volume and Issue: 102(8), P. 654 - 662

Published: Aug. 1, 2024

The capacity to lay eggs inside healthy fruits rather than on decaying plant matter differentiates insect fruit pests from domestic species. This niche differentiation has been previously proposed be an adaptation avoid competition. We hypothesize that pest species will more strongly affected by compare the impact of larvae density fitness traits between Drosophila ( suzukii (Matsumura, 1931); Zaprionus indianus Gupta, 1970) and immigrans Sturtevant, 1921; melanogaster Meigen, 1830). assessed effect crowding adult emergence development time. Viability decreased gradually with for D. suzukii, while Z. it remained high. Development time increased density; this was stronger which had a moderate increase, melanogaster, did not change. Contrary expectations, distinct patterns observed were related each species' or lifestyle. In fact, consistent either scramble contest type competition both species, respectively. These findings challenge prior beliefs regarding effects among provide information relevant integrated management.

Language: Английский

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Exploring the role of the microbiome of the H. illucens (black soldier fly) for microbial synergy in optimizing black soldier fly rearing and subsequent applications

Environmental Pollution, Journal Year: 2024, Volume and Issue: unknown, P. 125055 - 125055

Published: Oct. 1, 2024

Language: Английский

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Asymmetric oviposition behaviour between Drosophila suzukii and Drosophila subpulchrella suggests competition for the shared niche in their native range

Ecological Entomology, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 22, 2024

Abstract Release from competitors is one of the mechanisms ascribed to ecological success invasive species outside their native range (competitive release hypothesis). However, studies describing natural in homeland are limited. Drosophila suzukii , spotted‐wing drosophila, an pest small fruits expanding its worldwide, whereas subpulchrella most closely related D. remains endemic . inferior terms host usage capability, and it has not been considered as a major competitor This study examined interaction between two egg‐laying behaviour. A field survey revealed that 11% wild berries were co‐infected by both species. In laboratory experiments, avoided oviposition substrates had already oviposited either conspecific or females, did show any preference/avoidance toward asymmetric indicates may have negative effect on propagation niche‐sharing homeland, raising possibility competition with helped expansion populations invaded areas.

Language: Английский

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Bacillus thuringiensisbioinsecticide influencesDrosophilaoviposition decision

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: March 7, 2023

Abstract Behavioural avoidance has obvious benefits for animals facing environmental stressors such as pathogen-contaminated foods. Most current bioinsecticides are based on the and opportunistic bacterium Bacillus thuringiensis ( Bt ) that kills targeted insect pests upon ingestion. While food oviposition of bioinsecticide by species was reported, this remained to be addressed in non-target organisms, especially those affected chronic exposure Drosophila species. Here, using a two-choice test, we showed female flies three (four strains D. melanogaster , busckii suzukii avoided laying eggs presence var. kurstaki bioinsecticide, with potential offspring female’s fitness. Avoidance occurred rapidly, regardless fraction suspension (spores toxin crystals versus soluble toxins/components) independently motivation egg laying. Our results suggest that, addition recent findings developmental physiological alterations may have greater ecological implications field community their associated natural enemies than previously thought.

Language: Английский

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Effect of acetic acid bacteria colonization on oviposition and feeding site choice inDrosophila suzukiiand its related species

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: March 23, 2023

Abstract Oviposition site choice has a large impact on offspring performance. Unlike other vinegar flies that colonize decaying fruits, Drosophila suzukii lay eggs into hard ripening fruits by using their enlarged and serrated ovipositors (oviscapts). This behavior an advantage over species providing access to the host fruit earlier avoiding competition. However, larvae are not fully adapted low-protein diet, availability of intact healthy is seasonally restricted. Thus, investigate oviposition preference for microbial growth in this species, we conducted assay single commensal acetic acid bacteria, Acetobacter Gluconobacter . The preferences media with or without bacterial were quantified multiple strains D. its closely related subpulchrella biarmipes , typical fermenting-fruit consumer, melanogaster Our comparisons demonstrated continuous degree sites both within across suggesting niche separation notable but complete. showed variations among replicates no clear differences between strains. In addition, lack interspecific feeding -containing implies divergence occurred independently from preference. assays measuring each fly bacteria revealed intrinsic properties shared resource usage these species.

Language: Английский

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