keyword
https://read.qxmd.com/read/38516560/a-semiochemical-view-of-the-ecology-of-the-seed-beetle-acanthoscelides-obtectus-say-coleoptera-chrysomelidae-bruchinae
#1
REVIEW
József Vuts, Stephen J Powers, Eudri Venter, Árpád Szentesi
The dried bean beetle, Acanthoscelides obtectus , is an economically important pest of stored legumes worldwide. Tracking the human-aided dispersion of its primary hosts, the Phaseolus vulgaris beans, it is now widespread in most bean-growing areas of the tropics and subtropics. In temperate regions where it can only occasionally overwinter in the field, A. obtectus proliferates in granaries, having multiple generations a year. Despite its negative impact on food production, no sensitive detection or monitoring tools exist, and the reduction of local populations still relies primarily on inorganic insecticides as fumigating agents...
January 2024: Annals of Applied Biology
https://read.qxmd.com/read/38420662/fish-microbiota-repel-ovipositing-mosquitoes
#2
JOURNAL ARTICLE
Nimrod Shteindel, Yoram Gerchman, Alon Silberbush
The mere presence of predators causes prey organisms to display predation-avoidance strategies. Predator presence is often communicated through predator-released chemical signals. Ovipositing female mosquitoes of several species are repelled by unknown signals released from larvivorous fish. It was previously suggested that in many cases, a predator's microbiota plays an important role in the release of these signals; however, this mechanism is still poorly understood. In this study, we looked into the effects of the microbiota originating from the larvivorous Gambusia affinis (Baird and Girard) on the oviposition behaviour of gravid female mosquitoes...
February 29, 2024: Journal of Animal Ecology
https://read.qxmd.com/read/38415377/identification-of-the-odorant-binding-proteins-of-western-flower-thrips-frankliniella-occidentalis-characterization-and-binding-analysis-of-foccobp3-with-molecular-modelling-molecular-dynamics-simulations-and-a-confirmatory-field-trial
#3
JOURNAL ARTICLE
Zeeshan Zafar, Martyn J Wood, Sidra Fatima, Muhammad Faraz Bhatti, Farooq A Shah, Zack Saud, E Joel Loveridge, Ismail Karaca, Tariq M Butt
Olfactory systems are indispensable for insects as they, including Western Flower Thrips ( Frankliniella occidentalis ), use olfactory cues for ovipositing and feeding. F. occidentalis use odorant binding proteins (OBPs) to transport semiochemicals to odorant receptors to induce a behavioural response from the sensillum lymph of the insect's antennae. This study identifies four OBPs of F. occidentalis and analyses their expression at three stages of growth: larvae, adult males and adult females. Further, it investigates the presence of conserved motifs and their phylogenetic relationship to other insect species...
February 28, 2024: Journal of Biomolecular Structure & Dynamics
https://read.qxmd.com/read/38392544/demography-and-behaviour-of-teinopodagrion-oscillans-odonata-megapodagrionidae-in-a-protected-area-of-the-colombian-andean-region
#4
JOURNAL ARTICLE
Fredy Palacino-Rodríguez, Diego Andres Palacino, Andrea Penagos Arevalo, Adolfo Cordero-Rivera
The demography and behaviour of Teinopodagrion oscillans was studied in a protected area in the Andean region of Colombia. Adult damselflies were individually marked, and using their recapture histories, we estimated survival, longevity, sex ratio, and population size using Cormack-Jolly-Seber models. Other aspects of their behaviour were recorded. Survival, recapture, and lifespan (14.1 ± 0.59 days) were similar for both sexes and all age groups. Mature males were larger, and the distance from the water was similar for all individuals...
February 9, 2024: Insects
https://read.qxmd.com/read/38360933/pheromonal-variation-and-mating-between-two-mitotypes-of-fall-armyworm-spodoptera-frugiperda-in-africa
#5
JOURNAL ARTICLE
Birhanu Sisay, Amanuel Tamiru, Sevgan Subramanian, Christopher W Weldon, Fathiya Khamis, Kristina Karlsson Green, Peter Anderson, Baldwyn Torto
In the Americas, the fall armyworm (Spodoptera frugiperda) exists in two genetically distinct strains, the corn (C) and rice (R) strains. Despite their names, these strains are not associated with host plant preferences but have been shown to vary in pheromone composition and male responses. Recently, S. frugiperda was detected in Africa as an invasive species, but knowledge about variation in strain types, pheromone composition and inter-strain mating of populations of the pest in the continent has not been fully examined...
February 15, 2024: Scientific Reports
https://read.qxmd.com/read/38230380/%C3%AF-new-morphological-and-biological-contributions-to-adults-and-immature-forms-of-pissonotusparaguayensis-fulgoromorpha-delphacidae-in-wetlands-of-argentina
#6
JOURNAL ARTICLE
Ana M Marino de Remes Lenicov, Ana C Faltlhauser, Alvaro Foieri, Nicolas A Salinas, M Cristina Hernández, Alejandro J Sosa
In the search for insects as biological control agents for the water primrose, the delphacid Pissonotusparaguayensis (Delphacidae) was found on Ludwigiagrandiflorasubsp.hexapetala (Onagraceae) in a wetland of Central East Argentina. The morphology of the unknown females (brachypterous and macropterous) and immature stages are described and illustrated. Adults and nymphs were collected in wetlands of Del Plata River Basin, from Buenos Aires to the northeastern part of Argentina. A rearing methodology was developed to perform biological studies...
2024: ZooKeys
https://read.qxmd.com/read/38145823/turmeric-and-spirulina-as-culprits-for-the-toxic-effects-of-food-dyes-in-drosophila
#7
JOURNAL ARTICLE
Rebecca von Hellfeld, Craig Christie, Davina Derous, Juliano Morimoto
Prolonged exposure to food dyes, even for those considered safe for consumption, are known to have toxic effects. However, we lack a proper understanding of the underlying compounds that are responsible for the observed toxicity. Here, we tested the toxic effects of three common commercially available natural food dyes (red, green, blue), and their main ingredients (turmeric and spirulina), on Drosophila melanogaster oviposition, larval development, and larval foraging behaviour. Larval development and egg-to-adult survival was significantly impacted by blue and green dyes...
December 23, 2023: Journal of Insect Physiology
https://read.qxmd.com/read/38108949/dynamics-of-a-mosquito-egg-larvae-model-with-seasonality
#8
JOURNAL ARTICLE
Jesús Bellver-Arnau, Alessandro Margheri, Carlota Rebelo
We propose a two stages mosquito egg-larvae model with seasonality as a simplification of a four stages one. For the simplified model we characterize the dynamics in terms of the vectorial reproduction number, [Formula: see text], obtaining extinction if [Formula: see text] and convergence to a unique positive periodic orbit if [Formula: see text]. We illustrate each case with an example, by providing general conditions on the periodic coefficients for its occurrence. These examples are further developed using numerical simulations where the periodic parameters satisfy the conditions obtained...
December 18, 2023: Bulletin of Mathematical Biology
https://read.qxmd.com/read/38099135/egg-burying-behaviour-in-pristimantis-highlights-the-link-between-direct-development-and-specialised-parental-care
#9
JOURNAL ARTICLE
Francesca Nicole Angiolani-Larrea, Lelis Jindiachi, José Gabriel Tinajero-Romero, Anyelet Valencia-Aguilar, Marina Garrido-Priego, Jaime Culebras, Eva Ringler
One of the most extreme adaptations to terrestriality in anurans is direct development, where eggs from terrestrial clutches entirely circumvent an aquatic tadpole stage and directly develop into small froglets. We here report the first case of egg-burying behaviour in a neotropical direct-developing frog with subsequent short-term maternal care. An amplectant pair of Pristimantis chocoensis was found at the Reserva Canandé in Esmeraldas, Ecuador, and we recorded oviposition and the later rotation and active burying of the clutch by the female...
December 2023: Ecology and Evolution
https://read.qxmd.com/read/38036615/conserved-temperature-requirements-but-contrasting-responses-to-humidity-across-oviposition-preferences-in-temperate-grasshoppers
#10
JOURNAL ARTICLE
Tomáš Dvořák, Michal Knapp
The right choice of an oviposition site is a crucial task for oviparous species without maternal care. In contrast to well investigated biotic factors, e.g., larval food preferences, parasitism, predation, and competition avoiding, abiotic factors affecting oviposition preferences in insects have been rarely investigated in comparative studies. To improve our current understanding of oviposition site selection in Orthoptera, we investigated the influence of substrate temperature and moisture on the oviposition behaviour of 14 temperate grasshopper species...
November 30, 2023: Scientific Reports
https://read.qxmd.com/read/37913998/spoilt-for-choice-do-female-mosquitoes-experience-choice-overload-when-deciding-where-to-lay-eggs
#11
JOURNAL ARTICLE
Manvi Sharma, Kavita Isvaran
Animals live in complex natural environments. Based on the effects of natural selection, theory on animal information use says that it is optimal for animals to make "rational" decisions, i.e., to choose alternatives which maximize fitness gains, irrespective of the number of alternatives presented to them. Yet, animals commonly make seemingly "irrational" choices in the face of complex and variable stimuli that challenge their cognitive machinery. Here, we test the choice overload hypothesis - decision-making is negatively affected when animals experience an overload of choice...
October 30, 2023: Behavioural Processes
https://read.qxmd.com/read/37887753/naturally-occurring-yeasts-associated-with-thaumatotibia-leucotreta-can-enhance-the-efficacy-of-the-cryptophlebia-leucotreta-granulovirus
#12
JOURNAL ARTICLE
Marcel van der Merwe, Michael D Jukes, Caroline Knox, Sean D Moore, Martin P Hill
Yeasts associated with lepidopteran pests have been shown to play a role in their survival, development, and oviposition preference. It has been demonstrated that combining these yeasts with existing biological control agents can enhance their efficacy. The tortricid Thaumatotibia leucotreta is a phytosanitary pest in the South African citrus industry, with the baculovirus Cryptophlebia leucotreta granulovirus (CrleGV) being one of the components that can control this pest. Several yeast species were shown to be associated with T...
October 13, 2023: Pathogens
https://read.qxmd.com/read/37877756/a-classic-screening-marker-does-not-affect-antennal-electrophysiology-but-strongly-regulates-reproductive-behaviours-in-bactrocera-dorsalis
#13
JOURNAL ARTICLE
QiQige Wuyun, Yan Zhang, Jinxi Yuan, Jie Zhang, Cong Ren, Qi Wang, Shanchun Yan, Wei Liu, Guirong Wang
The key phenotype white eye (white) has been used for decades to selectively remove females before release in sterile insect technique programs and as an effective screening marker in genetic engineering. Bactrocera dorsalis is a representative tephritid pest causing damage to more than 150 fruit crops. Yet, the function of white in important biological processes remains unclear in B. dorsalis. In this study, the impacts of the white gene on electrophysiology and reproductive behaviour in B. dorsalis were tested...
October 25, 2023: Insect Molecular Biology
https://read.qxmd.com/read/37807627/unprecedented-oviposition-tactics-avoid-plant-defences-and-reduce-attack-by-parasitic-wasps
#14
JOURNAL ARTICLE
Jin-Hua Shi, Ze Sun, John A Pickett, Xin-Jun Hu, Chao Wang, Le Liu, Huanan Jin, Hazem Abdelnabby, Caroline Ngichop Foba, Xue-Qing Yang, Xiang-Qian Chang, Man-Qun Wang
Female insects oviposit in sites suitable for the development of their offspring. The Oriental armyworm, Mythimna separata is a serious pest of various crops including wheat and prefers to oviposit on withered leaves rather than on fresh plant material, which is surprisingly different from other insects. Studies here showed that this oviposition tactic enables avoidance of wheat defence against eggs and emerged larvae. Intact plants responded to M. separata egg deposition by releasing oviposition-induced plant volatiles including acetophenone, tetradecene and pentadecane after 24 h...
October 8, 2023: Plant, Cell & Environment
https://read.qxmd.com/read/37779213/eggcountai-a-convolutional-neural-network-based-software-for-counting-of-aedes-aegypti-mosquito-eggs
#15
JOURNAL ARTICLE
Nouman Javed, Adam J López-Denman, Prasad N Paradkar, Asim Bhatti
BACKGROUND: Mosquito-borne diseases exert a huge impact on both animal and human populations, posing substantial health risks. The behavioural and fitness traits of mosquitoes, such as locomotion and fecundity, are crucial factors that influence the spread of diseases. In existing egg-counting tools, each image requires separate processing with adjustments to various parameters such as intensity threshold and egg area size. Furthermore, accuracy decreases significantly when dealing with clustered or overlapping eggs...
October 2, 2023: Parasites & Vectors
https://read.qxmd.com/read/37758733/development-of-a-novel-genetic-sexing-strain-of-ceratitis-capitata-based-on-an-x-autosome-translocation
#16
JOURNAL ARTICLE
Carlos Cáceres, Kostas Bourtzis, Georgia Gouvi, Marc J B Vreysen, Nanwintoum Séverin Bimbilé Somda, Martina Hejníčková, František Marec, José S Meza
Genetic sexing strains (GSS), such as the Ceratitis capitata (medfly) VIENNA 8 strain, facilitate male-only releases and improve the efficiency and cost-effectiveness of sterile insect technique (SIT) applications. Laboratory domestication may reduce their genetic diversity and mating behaviour and hence, refreshment with wild genetic material is frequently needed. As wild males do not carry the T(Y;A) translocation, and wild females do not easily conform to artificial oviposition, the genetic refreshment of this GSS is a challenging and time-consuming process...
September 27, 2023: Scientific Reports
https://read.qxmd.com/read/37754705/the-effect-of-habitat-on-insect-movements-experimental-evidence-from-wild-caught-butterflies
#17
JOURNAL ARTICLE
Matteo Marcantonio, Raluca Voda, Daniele Da Re, Quentin Igot, Roger L H Dennis, Aurélien Vielfaure, Sophie O Vanwambeke, Caroline M Nieberding
There is broad evidence that the main driver of the ongoing biodiversity crisis is land-use change, which reduces and fragments habitats. The consequence of habitat fragmentation on behavioural responses of fitness-related traits in insects have been so far understudied. In herbivorous insects, oviposition-related behaviours determine access to larval food, and the fate of the next generation. We present a pilot study to assess differences in behaviours related to movement and oviposition in Limenitis camilla butterflies from Wallonia (Belgium), one of the most fragmented regions in Europe...
August 31, 2023: Insects
https://read.qxmd.com/read/37690334/egg-production-in-nests-and-nesting-behaviour-genetic-correlations-with-egg-quality-and-bw-for-laying-hens-on-the-floor
#18
JOURNAL ARTICLE
L Bécot, N Bédère, A Ferry, T Burlot, P Le Roy
In laying hen production, cage-free housing is growing rapidly to provide living conditions that meet hens' needs. Unlike cages, this housing requires nests for automatic collection of eggs, as eggs laid outside nests must be collected by hand. Selecting hens for nest-related traits, such as egg production in nests and nesting behaviour, could help meet the requirements of cage-free housing. However, genetic correlations between these traits and major traits of breeding programmes, such as egg quality or BW, are poorly known...
August 19, 2023: Animal
https://read.qxmd.com/read/37650056/-bacillus-thuringiensis-bioinsecticide-influences-drosophila-oviposition-decision
#19
JOURNAL ARTICLE
Aurélie Babin, Jean-Luc Gatti, Marylène Poirié
Behavioural avoidance has obvious benefits for animals facing environmental stressors such as pathogen-contaminated foods. Most current bioinsecticides are based on the environmental and opportunistic bacterium Bacillus thuringiensis ( Bt ) that kills targeted insect pests upon ingestion. While food and oviposition avoidance of Bt bioinsecticide by targeted insect species was reported, this remained to be addressed in non-target organisms, especially those affected by chronic exposure to Bt bioinsecticide such as Drosophila species...
August 2023: Royal Society Open Science
https://read.qxmd.com/read/37641822/aedes-aegypti-container-preference-for-oviposition-and-its-possible-implications-for-dengue-vector-surveillance-in-delhi-india
#20
JOURNAL ARTICLE
Pooja Prasad, Suman Lata, Sanjeev Kumar Gupta, Pawan Kumar, Rekha Saxena, Deepak Kumar Arya, Himmat Singh
OBJECTIVES: Dengue is a mosquito-borne viral disease globally transmitted by Aedes aegypti. The most effective method to prevent the transmission of the disease is proficient vector control. Understanding the breeding behaviour of the responsible vectors is very pertinent in this regard; therefore, the present study was conducted to understand Ae. aegypti behaviour regarding the selection of containers for oviposition in the megacity of Delhi. METHODS: A household survey in different localities within Delhi was carried out during 2018-2019...
August 23, 2023: Epidemiology and Health
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