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Oviposition behaviour

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https://www.readbyqxmd.com/read/30336431/the-influence-of-microplastics-on-trophic-interaction-strengths-and-oviposition-preferences-of-dipterans
#1
Ross N Cuthbert, Rana Al-Jaibachi, Tatenda Dalu, Jaimie T A Dick, Amanda Callaghan
Microplastic (MP) pollution continues to proliferate in freshwater, marine and terrestrial environments, but with their biotic implications remaining poorly understood. Biotic interactions such as predation can profoundly influence ecosystem structuring, stability and functioning. However, we currently lack quantitative understandings of how trophic interaction strengths and associated behaviours are influenced by MP pollution, and how transference of MPs between trophic levels relates to consumptive traits...
October 12, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/30290802/an-odorant-receptor-from-anopheles-sinensis-in-china-is-sensitive-to-oviposition-attractants
#2
Hongmei Liu, Luhong Liu, Peng Cheng, Xiaodan Huang, Maoqing Gong
BACKGROUND: Anopheles sinensis is an important vector for the spread of malaria in China. Olfactory-related behaviours, particularly oviposition site seeking, offer opportunities for disrupting the disease-transmission process. RESULTS: This is the first report of the identification and characterization of AsinOrco and AsinOR10 in An. sinensis. AsinOrco and AsinOR10 share 97.49% and 90.37% amino acid sequence identity, respectively, with related sequences in Anopheles gambiae...
October 5, 2018: Malaria Journal
https://www.readbyqxmd.com/read/30242940/repeated-switches-from-cooperative-to-selfish-worker-oviposition-during-stingless-bee-evolution
#3
Christoph Grüter
Reproductive division of labour is a defining feature of insect societies. Stingless bees (Meliponini) are an interesting exception among the highly eusocial insects in that workers of many species contribute significantly to the production of males. Since workers remain sterile in other species of this large tropical tribe, it has been hypothesized that, in the latter species, ancestral queens have won the conflict over who produces the males. The fact that sterile workers of some species lay trophic eggs to feed the queen and display ritualized behaviours towards her during oviposition has been interpreted as an evolutionary relic of this ancient conflict...
September 22, 2018: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/30235275/influence-of-high-temperature-exposure-on-the-mating-oviposition-and-thermotaxis-of-bactrocera-cucurbitae-coquillet-diptera-tephritidae
#4
Bei Zeng, Wenjing Zhu, Yueguan Fu, Shihao Zhou
BACKGROUND: Bactrocera cucurbitae (Coquillett) is an important pest of cucurbit crops and certain vegetables in Asia, the Middle East, Africa and Hawaii. Most studies on B. cucurbitae have focussed on the effects of prolonged high temperature and very few have examined the effects of short-term exposures to high-temperature on behaviour. RESULTS: In this study, short-term of high-temperature treatments of 33°C, 37°C, 41°C and 45°C were maintained for 1-3hr, and long-term, variable high-temperature treatments were established that consisted of experienced one, two and three times high temperatures stages to 31°C, 33°C, 34°C, 35°C, 36°C, 37°C, 41°C and 45°C for 7hr...
2018: PloS One
https://www.readbyqxmd.com/read/30181545/dengue-virus-infection-changes-aedes-aegypti-oviposition-olfactory-preferences
#5
Julie Gaburro, Prasad N Paradkar, Melissa Klein, Asim Bhatti, Saeid Nahavandi, Jean-Bernard Duchemin
Aedes aegypti mosquitoes, main vectors for numerous flaviviruses, have olfactory preferences and are capable of olfactory learning especially when seeking their required environmental conditions to lay their eggs. In this study, we showed that semiochemical conditions during Aedes aegypti larval rearing affected future female choice for oviposition: water-reared mosquitoes preferred to lay eggs in water or p-cresol containers, while skatole reared mosquitoes preferred skatole sites. Using two independent behavioural assays, we showed that this skatole preference was lost in mosquitoes infected with dengue virus...
September 4, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30168151/anopheles-arabiensis-oviposition-site-selection-in-response-to-habitat-persistence-and-associated-physicochemical-parameters-bacteria-and-volatile-profiles
#6
L K Eneh, U Fillinger, A K Borg Karlson, G Kuttuva Rajarao, J Lindh
A better understanding of the oviposition behaviour of malaria vectors might facilitate the development of new vector control tools. However, the factors that guide the aquatic habitat selection of gravid females are poorly understood. The present study explored the relative attractiveness of similar artificial ponds (0.8 m2 ) aged at varying lengths prior to opening in such a way that wild Anopheles arabiensis could choose between ponds that were freshly set up, or were aged 4 or 17 days old, to lay eggs...
August 31, 2018: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/30157907/sublethal-effects-of-a-vapour-active-pyrethroid-transfluthrin-on-aedes-aegypti-and-ae-albopictus-diptera-culicidae-fecundity-and-oviposition-behaviour
#7
Christopher S Bibbs, Daniel A Hahn, Phillip E Kaufman, Rui-de Xue
BACKGROUND: It is assumed that mosquitoes surviving exposure to spatial repellents when attempting to bite a host will not have significant adverse impacts on their downstream biology. Therefore, a critical knowledge gap is understanding the extent to which sublethal exposure to volatile pyrethroids may damage the performance of mosquitoes that survive exposure to vapour-active pyrethroids. To address this, laboratory-reared Aedes aegypti (L.) and Ae. albopictus (Skuse) were exposed to one of three sublethal concentrations of transfluthrin before being offered a blood-meal, after which their survival, fecundity, fertility, and egg-laying behaviour was assessed...
August 29, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/30051874/-bt-rice-plants-may-protect-neighbouring-non-bt-rice-plants-against-the-striped-stem-borer-chilo-suppressalis
#8
Yaoyu Jiao, Xiaoyun Hu, Yufa Peng, Kongming Wu, Jörg Romeis, Yunhe Li
The area planted with insect-resistant genetically engineered crops expressing Bacillus thuringiensis ( Bt ) genes has greatly increased in many areas of the world. Given the nearby presence of non- Bt crops (including those planted as refuges) and non-crop habitats, pests targeted by the Bt trait have a choice between Bt and non- Bt crops or weeds, and their host preference may greatly affect insect management and management of pest resistance to Bt proteins. In this study, we examined the oviposition preference of the target pest of Bt rice, Chilo suppressalis , for Bt versus non- Bt rice plants as influenced by previous damage caused by C...
July 25, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29890690/expression-of-resistance-in-amaranthus-spp-caryophyllales-amaranthaceae-effects-of-selected-accessions-on-the-behaviour-and-biology-of-the-amaranth-leaf-webber-spoladea-recurvalis-lepidoptera-crambidae
#9
Stephen T O Othim, Srinivasan Ramasamy, Ruth Kahuthia-Gathu, Thomas Dubois, Sunday Ekesi, Komi K M Fiaboe
Spoladea recurvalis F. is a major pest moth of amaranth ( Amaranthus spp.) flowers worldwide, with a potential of causing complete foliage loss under severe outbreaks. Chemical insecticides are uneconomical for resource-poor farmers and pose health and environmental risks. Host plant resistance (HPR) to insects is an effective, economical and environmentally friendly alternative that is poorly understood and largely unexploited among traditional leafy vegetables. A total of 35 amaranth accessions were evaluated for the expression of their antixenotic and antibiotic traits against S...
June 8, 2018: Insects
https://www.readbyqxmd.com/read/29870689/ovigeny-index-increases-with-temperature-in-an-aphid-parasitoid-is-early-reproduction-better-when-it-is-hot
#10
Joffrey Moiroux, Guy Boivin, Jacques Brodeur
Studying relative investment of resources towards early and delayed reproduction is central to understand life history evolution since these traits are generally negatively correlated and traded-off against several other fitness components. For this purpose, ovigeny index (OI), which is calculated as the fraction of the maximum potential lifetime egg complement that is mature upon female emergence, has been developed in insects. Despite the central role of temperature on life history evolution in ectotherms, its influence on ovigeny index has never been tested...
August 2018: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29728057/transcriptome-profiling-of-the-honeybee-parasite-varroa-destructor-provides-new-biological-insights-into-the-mite-adult-life-cycle
#11
Fanny Mondet, Andrea Rau, Christophe Klopp, Marine Rohmer, Dany Severac, Yves Le Conte, Cedric Alaux
BACKGROUND: The parasite Varroa destructor represents a significant threat to honeybee colonies. Indeed, development of Varroa infestation within colonies, if left untreated, often leads to the death of the colony. Although its impact on bees has been extensively studied, less is known about its biology and the functional processes governing its adult life cycle and adaptation to its host. We therefore developed a full life cycle transcriptomic catalogue in adult Varroa females and included pairwise comparisons with males, artificially-reared and non-reproducing females (10 life cycle stages and conditions in total)...
May 4, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29694827/hormone-induced-spawning-of-the-critically-endangered-northern-corroboree-frog-pseudophryne-pengilleyi
#12
Aimee J Silla, Michael McFadden, Phillip G Byrne
Fundamental knowledge of the optimal hormone concentrations required to stimulate amplexus and spawning in breeding pairs of amphibians is currently lacking, hindering our understanding of the proximate mechanisms underpinning mating behaviour. The present study investigated the effects of: (1) the dose of a gonadotropin-releasing hormone analogue (GnRH-a) administered; (2) male-female hormone administration interval; and (3) topical application of GnRH-a, on spawning success in the northern corroboree frog...
April 26, 2018: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29679661/evolutionary-compromises-to-metabolic-toxins-ammonia-and-urea-tolerance-in-drosophila-suzukii-and-drosophila-melanogaster
#13
Virginia Belloni, Alessia Galeazzi, Giulia Bernini, Mauro Mandrioli, Elisabetta Versace, Albrecht Haase
The invasive pest Drosophila suzukii has evolved morphological and behavioural adaptations to lay eggs under the skin of fresh fruits. This results in severe damage to a wide range of small fruits. Drosophila suzukii females typically lay few eggs per fruit, preferring healthy fruits. Hence, larvae are exposed to a reduced amount of nitrogenous waste. Differently, the innocuous Drosophila melanogaster lays eggs on fermented fruits already infested by conspecifics, with larvae developing in a crowded environment with the accumulation of nitrogenous waste such as ammonia and urea...
July 1, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29661140/the-biochemical-composition-and-transcriptome-of-cotyledons-from-brassica-napus-lines-expressing-the-atgl3-transcription-factor-and-exhibiting-reduced-flea-beetle-feeding
#14
Margaret Gruber, Ushan Alahakoon, Ali Taheri, Nayidu Nagubushana, Rong Zhou, Banyar Aung, Andrew Sharpe, Abdelali Hannoufa, Peta Bonham-Smith, Dwayne D Hegedus D
BACKGROUND: Previously, transgenic trichome-bearing (hairy leaf) Brassica napus lines expressing either the Arabidopsis thaliana GL3 gene (line AtGL3+) [1] or the AtGL3 gene in combination with an RNAi construct to down-regulate TTG1 (line K-5-8) [2] were developed. The leaves of these lines exhibited altered insect feeding (flea beetle) and oviposition (diamondback moth) behaviour compared to the non-transgenic semi-glabrous leaves of B. napus cv. Westar. Interestingly, the cotyledons of these lines remained glabrous, but also showed reduced feeding by flea beetles...
April 16, 2018: BMC Plant Biology
https://www.readbyqxmd.com/read/29615055/differential-susceptibilities-of-anopheles-albimanus-and-anopheles-stephensi-mosquitoes-to-ivermectin
#15
Staci M Dreyer, Kelsey J Morin, Jefferson A Vaughan
BACKGROUND: Vector control is a crucial element of anti-malaria campaigns and works best when there is a thorough knowledge of the biology and behaviour of the Anopheles vector species responsible for transmitting malaria within a given locale. With the push to eradicate malaria stronger than ever, there is a growing need to develop and deploy control strategies that exploit the behavioural attributes of local vector species. This is especially true in regions where the vectors are exophagic (i...
April 3, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29589827/the-changing-use-of-the-ovipositor-in-host-shifts-by-ichneumonid-ectoparasitoids-of-spiders-hymenoptera-ichneumonidae-pimplinae
#16
Keizo Takasuka, Niclas R Fritzén, Yoshihiro Tanaka, Rikio Matsumoto, Kaoru Maeto, Mark R Shaw
Accurate egg placement into or onto a living host is an essential ability for many parasitoids, and changes in associated phenotypes, such as ovipositor morphology and behaviour, correlate with significant host shifts. Here, we report that in the ichneumonid group of koinobiont spider-ectoparasitoids ("polysphinctines"), several putatively ancestral taxa (clade I here), parasitic on ground-dwelling RTA-spiders (a group characterised by retrolateral tibial apophysis on male palpal tibiae), lay their eggs in a specific way...
2018: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/29579718/post-feeding-activity-of-lucilia-sericata-diptera-calliphoridae-on-common-domestic-indoor-surfaces-and-its-effect-on-development
#17
L A Robinson, D Bryson, M T Bulling, N Sparks, K S Wellard
Developmental data of forensically important blowflies used by entomologists to estimate minimum post mortem interval (mPMI) are established under controlled laboratory conditions for various temperature ranges throughout the stages of egg, 1st-3rd instar, puparia, and adult fly emergence. However, environmental conditions may influence the patterns of development and behaviour of blowflies, potentially impacting on these established development rates. Previous studies investigating indoor colonisation have focused on the delay to oviposition, with behaviour during the post-feeding phase in this setting often overlooked...
May 2018: Forensic Science International
https://www.readbyqxmd.com/read/29515880/differential-gene-expression-is-not-required-for-facultative-sex-allocation-a-transcriptome-analysis-of-brain-tissue-in-the-parasitoid-wasp-nasonia-vitripennis
#18
Nicola Cook, Rebecca A Boulton, Jade Green, Urmi Trivedi, Eran Tauber, Bart A Pannebakker, Michael G Ritchie, David M Shuker
Whole-transcriptome technologies have been widely used in behavioural genetics to identify genes associated with the performance of a behaviour and provide clues to its mechanistic basis. Here, we consider the genetic basis of sex allocation behaviour in the parasitoid wasp Nasonia vitripennis . Female Nasonia facultatively vary their offspring sex ratio in line with Hamilton's theory of local mate competition (LMC). A single female or 'foundress' laying eggs on a patch will lay just enough sons to fertilize her daughters...
February 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29499744/keeping-track-of-mosquitoes-a-review-of-tools-to-track-record-and-analyse-mosquito-flight
#19
REVIEW
Jeroen Spitzen, Willem Takken
The health impact of mosquito-borne diseases causes a huge burden on human societies. Recent vector control campaigns have resulted in promising declines in incidence and prevalence of these diseases, notably malaria, but resistance to insecticides and drugs are on the rise, threatening to overturn these gains. Moreover, several vector-borne diseases have re-emerged, requiring prompt and effective response measures. To improve and properly implement vector control interventions, the behaviour of the vectors must be well understood with detailed examination of mosquito flight being an essential component...
March 2, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29495099/stormwater-wetlands-can-function-as-ecological-traps-for-urban-frogs
#20
Michael Sievers, Kirsten M Parris, Stephen E Swearer, Robin Hale
Around cities, natural wetlands are rapidly being destroyed and replaced with wetlands constructed to treat stormwater. Although the intended purpose of these wetlands is to manage urban stormwater, they are inhabited by wildlife that might be exposed to contaminants. These effects will be exacerbated if animals are unable to differentiate between stormwater treatment wetlands of varying quality and some function as "ecological traps" (i.e., habitats that animals prefer despite fitness being lower than in other habitats)...
June 2018: Ecological Applications: a Publication of the Ecological Society of America
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