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Oviposition behaviour

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https://read.qxmd.com/read/30691446/does-artemether-lumefantrine-administration-affect-mosquito-olfactory-behaviour-and-fitness
#1
Jetske G de Boer, Annette O Busula, Jet Ten Berge, Tessa S van Dijk, Willem Takken
BACKGROUND: Artemisinin-based combination therapy (ACT) is the recommended treatment against uncomplicated Plasmodium falciparum infections, and ACT is widely used. It has been shown that gametocytes may be present after ACT and transmission to mosquitoes is still possible. Artemether-lumefantrine (AL) is a broadly used artemisinin-based combination medicine. Here, it is tested whether AL influences behaviour and fitness of Anopheles mosquitoes, which are the main vectors of P. falciparum...
January 28, 2019: Malaria Journal
https://read.qxmd.com/read/30670073/diel-flight-activity-of-wild-caught-anopheles-farauti-s-s-and-an-hinesorum-malaria-mosquitoes-from-northern-queensland-australia
#2
COMPARATIVE STUDY
Giles E Duffield, Dominic J Acri, Gary F George, Aaron D Sheppard, Nigel W Beebe, Scott A Ritchie, Thomas R Burkot
BACKGROUND: Species in the Anopheles farauti complex are major malaria vectors in the Asia Pacific region. Anopheline mosquitoes exhibit circadian and diel rhythms in sugar- and blood-feeding (biting), flight activity, oviposition, and in some species, a short-lived dusk/early night associated swarming behaviour during which mating occurs. A behavioural study of wild-caught mosquitoes from Queensland, Australia was conducted to investigate the differences in diel rhythmic flight activity between two cryptic species in several reproductive states...
January 22, 2019: Parasites & Vectors
https://read.qxmd.com/read/30642379/maximising-mosquito-collections-from-barrier-screens-the-impacts-of-physical-design-and-operation-parameters
#3
Edgar J M Pollard, Tanya L Russell, Thomas R Burkot
BACKGROUND: Traditional methods for collecting outdoor resting mosquitoes are generally inefficient with relatively low numbers caught per unit effort. The barrier screen, designed to intercept mosquitoes as they fly between areas where blood meals are obtained and oviposition sites where eggs are laid, was developed in 2013 as a novel method of sampling outdoor mosquito populations. Barrier screens do not use an odorant lure and are thus a non-mechanical, simple, low maintenance and passive sampling method for use, even in isolated locations...
January 14, 2019: Parasites & Vectors
https://read.qxmd.com/read/30633753/limited-effects-of-the-maternal-rearing-environment-on-the-behaviour-and-fitness-of-an-insect-herbivore-and-its-natural-enemy
#4
Jennifer M Slater, Lucy Gilbert, David Johnson, Alison J Karley
The maternal rearing environment can affect offspring fitness or phenotype indirectly via 'maternal effects' and can also influence a mother's behaviour and fecundity directly. However, it remains uncertain how the effects of the maternal rearing environment cascade through multiple trophic levels, such as in plant-insect herbivore-natural enemy interactions. Pea aphids (Acyrthosiphon pisum) show differential fitness on host legume species, while generalist aphid parasitoids can show variable fitness on different host aphid species, suggesting that maternal effects could operate in a plant-aphid-parasitoid system...
2019: PloS One
https://read.qxmd.com/read/30627995/tacking-the-vector-of-xylella-fastidiosa-geo-statistical-analysis-of-long-term-field-observations-on-host-plants-influencing-the-distribution-of-phylaenus-spumarius-nymphs
#5
Arianna Latini, Cipriano Foxi, Flavio Borfecchia, Andrea Lentini, Luigi De Cecco, Domenico Iantosca, Mauro Serafini, Ugo Laneri, Marco Citterio, Alessandro Campiotti, Giovanni Benelli, Susanna Mariani
The meadow froghopper, Philaenus spumarius L., is endemic in Italy and was not considered a harmful species until 2014, when the olive quick decline syndrome (OQDS) showed up in Apulia (southern Italy). It was immediately suspected and then verified as the main vector of Xylella fastidiosa, the bacterium responsible for the disease. Currently, EU Directives consider the fight against P. spumarius compulsory in member states and recommend Integrated Pest Management (IPM), both in uncultivated and cultivated infested areas, to minimise the environmental impact of chemical pesticides...
January 9, 2019: Environmental Science and Pollution Research International
https://read.qxmd.com/read/30586439/origanum-vulgare-terpenoids-modulate-myrmica-scabrinodis-brain-biogenic-amines-and-ant-behaviour
#6
Giuseppe Mannino, Gholamreza Abdi, Massimo Emilio Maffei, Francesca Barbero
Coordinated social behaviour is fundamental for ant ecological success. However, even distantly-related organisms, such as plants, have evolved the ability to manipulate ant collective performances to their own advantage. In the parasitic system encompassing Maculinea butterflies, Myrmica ants, and Origanum vulgare plants, the ant-plant interaction elicits the release of a volatile terpenoid compound (carvacrol) which is used by the gravid butterfly to locate the ideal oviposition site. Here we show that this ant-plant association is maintained by the effect of O...
2018: PloS One
https://read.qxmd.com/read/30464065/discovery-and-exploitation-of-a-natural-ecological-trap-for-a-mosquito-disease-vector
#7
Allison M Gardner, Ephantus J Muturi, Brian F Allan
Ecological traps occur due to a mismatch between a habitat's attractiveness and quality, wherein organisms show preference for low-quality habitats over other available high-quality habitats. Our previous research identified leaf litter from common blackberry ( Rubus allegheniensis ) as a natural ecological trap for an important vector for West Nile virus ( Culex pipiens ), attracting mosquitoes to oviposit in habitats deleterious to the survival of their larvae. Here we demonstrate that manipulation of leaf litter in stormwater catch basins, an important source of disease vector mosquitoes in urban environments, can increase Cx...
November 21, 2018: Proceedings. Biological Sciences
https://read.qxmd.com/read/30451914/observing-the-devastating-coffee-berry-borer-hypothenemus-hampei-inside-the-coffee-berry-using-micro-computed-tomography
#8
Ignacio Alba-Alejandre, Javier Alba-Tercedor, Fernando E Vega
The coffee berry borer is the most devastating insect pest of coffee throughout the world. The insect spends most of its life cycle inside the coffee berry, which makes it quite difficult to observe its behaviour. Micro-computed tomography (micro-CT) was used to observe all developmental stages of the coffee berry borer inside coffee berries (Coffea canephora). An interesting oviposition pattern involving a sequential placement of eggs starting in the periphery of the seed and moving inwards was observed. Micro-CT should be useful in elucidating unknown life history aspects of other seed-feeding bark beetles as well as of bark and ambrosia beetles in general...
November 19, 2018: Scientific Reports
https://read.qxmd.com/read/30356173/understanding-the-mismatch-between-behaviour-and-development-in-a-novel-host-parasitoid-association
#9
Joanna K Konopka, Danny Poinapen, Tara Gariepy, Jeremy N McNeil
Foraging parasitoid females should preferentially oviposit on hosts most suitable for progeny development to maximize their fitness. However, the introduction of a new host species may disrupt the link between the reliability of the cues and the expected adaptive outcome of female choice, leading to an evolutionary trap. This mismatch between behavioural acceptance and lack of development exists for North American and European egg parasitoids (Scelionidae) that encounter invasive Halyomorpha halys in areas where this exotic host has recently established...
October 24, 2018: Scientific Reports
https://read.qxmd.com/read/30336431/the-influence-of-microplastics-on-trophic-interaction-strengths-and-oviposition-preferences-of-dipterans
#10
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...
February 15, 2019: Science of the Total Environment
https://read.qxmd.com/read/30290802/an-odorant-receptor-from-anopheles-sinensis-in-china-is-sensitive-to-oviposition-attractants
#11
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://read.qxmd.com/read/30242940/repeated-switches-from-cooperative-to-selfish-worker-oviposition-during-stingless-bee-evolution
#12
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://read.qxmd.com/read/30235275/influence-of-high-temperature-exposure-on-the-mating-oviposition-and-thermotaxis-of-bactrocera-cucurbitae-coquillet-diptera-tephritidae
#13
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://read.qxmd.com/read/30181545/dengue-virus-infection-changes-aedes-aegypti-oviposition-olfactory-preferences
#14
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://read.qxmd.com/read/30168151/anopheles-arabiensis-oviposition-site-selection-in-response-to-habitat-persistence-and-associated-physicochemical-parameters-bacteria-and-volatile-profiles
#15
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://read.qxmd.com/read/30157907/sublethal-effects-of-a-vapour-active-pyrethroid-transfluthrin-on-aedes-aegypti-and-ae-albopictus-diptera-culicidae-fecundity-and-oviposition-behaviour
#16
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://read.qxmd.com/read/30051874/-bt-rice-plants-may-protect-neighbouring-non-bt-rice-plants-against-the-striped-stem-borer-chilo-suppressalis
#17
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://read.qxmd.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
#18
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://read.qxmd.com/read/29870689/ovigeny-index-increases-with-temperature-in-an-aphid-parasitoid-is-early-reproduction-better-when-it-is-hot
#19
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://read.qxmd.com/read/29728057/transcriptome-profiling-of-the-honeybee-parasite-varroa-destructor-provides-new-biological-insights-into-the-mite-adult-life-cycle
#20
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
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