Differences in colour preference among pollen beetle species (Coleoptera: Nitidulidae)

2022 ◽  
Author(s):  
József Vuts ◽  
István Szarukán ◽  
Zsolt Marczali ◽  
Éva Bálintné Csonka ◽  
Arnold Szilágyi ◽  
...  
Keyword(s):  
Beetle Species ◽  
Colour Preference ◽  
Pollen Beetle

Fabric Colour Preference and Emotional Maturity of Women

2012 ◽  
Vol 3 (1) ◽  
pp. 481-483
Author(s):  
Dr. Anjali Kaware ◽  
◽  
Dr. Jyoti Mankar ◽  
Priyanka Agrawal
Keyword(s):  
Colour Preference ◽  
Emotional Maturity

A distribution atlas of legally protected ground beetle species (Coleoptera: Carabidae) occurring in the Łódź Province, central Poland

2013 ◽  
Vol 56 (2) ◽  
pp. 89-112
Author(s):  
Radomir Jaskuła ◽  
Anna Stępień ◽  
Przemysław Włodarczyk ◽  
Iwona Słowińska-Krysiak
Keyword(s):  
Ground Beetle ◽  
Beetle Species ◽  
Central Poland ◽  
Distribution Atlas

scholarly journals Interactions of ants with native and invasive lady beetles and the role of chemical cues in intraguild interference

Chemoecology ◽  
2021 ◽  
Author(s):  
Roman Bucher ◽  
Laura M. Japke ◽  
Ayse Gül Ünlü ◽  
Florian Menzel
Keyword(s):  
Chemical Cues ◽  
Harmonia Axyridis ◽  
Species Recognition ◽  
Lady Beetle ◽  
Lasius Niger ◽  
Beetle Species ◽  
Beetle Elytra ◽  
Lady Beetles ◽  
Ant Aggression

AbstractThe predator-predator naïveté hypothesis suggests that non-native predators benefit from being unknown to native predators, resulting in reduced intraguild interference with native predators. This novelty advantage should depend on the ability of native predators to recognize cues of non-native predators. Here, we compared ant aggression and lady beetle reaction in four native and the invasive lady beetle species Harmonia axyridis. In addition, we tested whether lady beetle cuticular hydrocarbons (CHCs) are involved in species recognition, which might explain naïveté if the invasive species has a specific CHC profile. To this end, we conducted behavioral assays confronting two native ant species with both living lady beetles and lady beetle elytra bearing or lacking CHCs of different lady beetle species. Finally, we characterized CHC profiles of the lady beetles using GC–MS. In general, the aggression of Lasius niger was more frequent than that of Myrmica rubra and L. niger aggression was more frequent towards most native lady beetle species compared to H. axyridis. The removal of CHCs from lady beetle elytra reduced aggression of both ant species. If CHCs of respective lady beetle species were added on cue-free elytra, natural strength of L. niger aggression could be restored. CHC analyses revealed a distinct cue composition for each lady beetle species. Our experiments demonstrate that the presence of chemical cues on the surface of lady beetles contribute to the strength of ant aggression against lady beetles. Reduced aggression of L. niger towards H. axyridis and reduced avoidance behavior in H. axyridis compared to the equally voracious C. septempunctata might improve the invasive lady beetle’s access to ant-tended aphids.

scholarly journals RNAi efficacy is enhanced by chronic dsRNA feeding in pollen beetle

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Jonathan Willow ◽  
Liina Soonvald ◽  
Silva Sulg ◽  
Riina Kaasik ◽  
Ana Isabel Silva ◽  
...  
Keyword(s):  
Rna Interference ◽  
Pest Management ◽  
Oilseed Rape ◽  
Growth Stages ◽  
Short Term ◽  
Pollen Beetle ◽  
Brassicogethes Aeneus ◽  
Crop Growth Stages ◽  
Insecticidal Compounds ◽  
Significant Mortality

AbstractDouble-stranded RNAs (dsRNAs) represent a promising class of biosafe insecticidal compounds. We examined the ability to induce RNA interference (RNAi) in the pollen beetle Brassicogethes aeneus via anther feeding, and compared short-term (3 d) to chronic (17 d) feeding of various concentrations of dsRNA targeting αCOP (dsαCOP). In short-term dsαCOP feeding, only the highest concentration resulted in significant reductions in B. aeneus survival; whereas in chronic dsαCOP feeding, all three concentrations resulted in significant mortality. Chronic dsαCOP feeding also resulted in significantly greater mortality compared to short-term feeding of equivalent dsαCOP concentrations. Our results have implications for the economics and development of dsRNA spray approaches for managing crop pests, in that multiple lower-concentration dsRNA spray treatments across crop growth stages may result in greater pest management efficacy, compared to single treatments using higher dsRNA concentrations. Furthermore, our results highlight the need for research into the development of RNAi cultivars for oilseed rape protection, given the enhanced RNAi efficacy resulting from chronic, compared to short-term, dsRNA feeding in B. aeneus.

3-Methylcyclohex-2-en-1-one and the Douglas-fir beetle (Coleoptera: Curculionidae): history of successful bark beetle pheromone treatments

2020 ◽  
Vol 153 (1) ◽  
pp. 62-78
Author(s):  
Darrell W. Ross
Keyword(s):  
Bark Beetle ◽  
Douglas Fir ◽  
Future Research ◽  
Beetle Species ◽  
Successful Management ◽  
Dendroctonus Pseudotsugae ◽  
Successful Development ◽  
History Of ◽  
Antiaggregation Pheromone

AbstractThis paper reviews the literature on the identification of 3-methylcyclohex-2-en-1-one (MCH) as the antiaggregation pheromone of the Douglas-fir beetle (Dendroctonus pseudotsugae Hopkins) (Coleoptera: Curculionidae) and the development of successful management applications using the pheromone. Previously unpublished data from two studies on novel uses of MCH are included. The successful development of antiaggregation pheromone-based treatments for the Douglas-fir beetle is discussed in relation to efforts to develop similar treatments for other bark beetle species, and opportunities for future research on MCH and the Douglas-fir beetle are suggested.

Modeling the Impacts of Two Bark Beetle Species Under a Warming Climate in the Southwestern USA: Ecological and Economic Consequences

2009 ◽  
Vol 44 (4) ◽  
pp. 824-835 ◽  
Author(s):  
Kristen M. Waring ◽  
Danielle M. Reboletti ◽  
Lauren A. Mork ◽  
Ching-Hsun Huang ◽  
Richard W. Hofstetter ◽  
...  
Keyword(s):  
Bark Beetle ◽  
Economic Consequences ◽  
Beetle Species ◽  
Warming Climate ◽  
Southwestern Usa

Efficacy of different entomopathogenic fungal isolates against four key stored-grain beetle species

2021 ◽  
Vol 93 ◽  
pp. 101845
Author(s):  
Waqas Wakil ◽  
Nickolas G. Kavallieratos ◽  
Muhammad Usman Ghazanfar ◽  
Muhammad Usman ◽  
Amer Habib ◽  
...  
Keyword(s):  
Beetle Species ◽  
Stored Grain ◽  
Fungal Isolates

Conservation genetics of three flightless beetle species in southern California

2008 ◽  
Vol 10 (1) ◽  
pp. 203-216 ◽  
Author(s):  
Michael S. Caterino ◽  
Stylianos Chatzimanolis
Keyword(s):  
Conservation Genetics ◽  
Southern California ◽  
Beetle Species
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