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Oviposition behaviour

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https://www.readbyqxmd.com/read/30051874/-bt-rice-plants-may-protect-neighbouring-non-bt-rice-plants-against-the-striped-stem-borer-chilo-suppressalis
#1
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
#2
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
#3
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...
June 2, 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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
https://www.readbyqxmd.com/read/29466989/sweet-attraction-sugarcane-pollen-associated-volatiles-attract-gravid-anopheles-arabiensis
#14
Betelehem Wondwosen, Göran Birgersson, Habte Tekie, Baldwyn Torto, Rickard Ignell, Sharon R Hill
BACKGROUND: Anopheles arabiensis is a key vector for the transmission of human malaria in sub-Saharan Africa. Over the past 10,000 years, humans have successfully cultivated grasses and altered the landscape, creating An. arabiensis favourable environments that contain excellent habitats for both larvae and adults. Sugarcane is the most expanding agricultural system in sub-Saharan Africa, and is linked to the increased threat of malaria in rural communities. The prolific production and wind dispersal of sugarcane pollen, together with standing pools of water, often provide, as a result of irrigation, a nutrient-rich environment for the offspring of gravid malaria mosquitoes...
February 21, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29463915/opportunistic-random-searcher-versus-intentional-search-image-user
#15
József Garay, Zoltán Varga, Tamás F Móri, Inmaculada López, Manuel Gámez, Juan R Gallego, Tomás Cabello
We consider two types of optimal foragers: a random searcher and a search image user. A search image user can find its desired prey with higher and undesired prey with lower probability than a random searcher. Our model considers the density-dependent travelling time and the time duration of reproduction (oviposition). In the framework of optimal foraging theory for one predator-two prey systems, we find that there are ranges of prey densities in which the search image user has a higher net energy intake, and there are other ranges of prey densities in which the random searcher has higher net energy intake...
February 20, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29415777/influence-of-food-availability-on-mate-guarding-behaviour-of-ladybirds
#16
D D Chaudhary, G Mishra, Omkar
A recent study on ladybird, Menochilus sexmaculatus (Fabricius) demonstrates that males perform post-copulatory mate guarding in the form of prolonged mating durations. We investigated whether food resource fluctuation affects pre- and post-copulatory behaviour of M. sexmaculatus. It has not been studied before in ladybirds. For this, adults were subjected to prey resource fluctuations sequentially at three levels: post-emergence (Poe; 10 days), pre-mating (Prm; 24 h) and post-mating (Pom; 5 days; only female)...
February 8, 2018: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/29412343/the-influence-of-a-light-and-dark-cycle-on-the-egg-laying-activity-of-aedes-aegypti-linnaeus-1762-diptera-culicidae
#17
Luana Cristina Farnesi, Christine Silveira Barbosa, Luciana Ordunha Araripe, Rafaela Vieira Bruno
BACKGROUND: The epidemiological importance of the mosquito Aedes aegypti as a vector of multiple human pathogens has generated a growing number of studies on the physiology and behaviour of its blood-feeding females. The activity of oviposition is one of the critical elements contributing to the expansion of Ae. aegypti's populations. Although there is a vast literature about oviposition behaviour, significant specific knowledge about egg viability and female fertility under light and dark conditions is still lacking...
February 5, 2018: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/29345218/mitochondrial-dna-suggests-cryptic-speciation-in-prodiplosis-longifila-gagn%C3%A3-diptera-cecidomyiidae-associated-with-geographic-distance-and-host-specialization
#18
D N Duque-Gamboa, M F Castillo-Cárdenas, L M Hernández, Y C Guzmán, M R Manzano, N Toro-Perea
Prodiplosis longifila is reported as a pest of a wide range of species cultivated in America, including citrus, solanaceous species and asparagus. This species has different behavioural traits that are primarily centred on the oviposition habit and the feeding of larvae, which can change depending on the host. However, scarce information is available on population studies and the natural history of this insect, and uncertainty exists about the taxonomic identity and the geographic distribution of this species...
January 18, 2018: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/29304052/citrus-flush-shoot-ontogeny-modulates-biotic-potential-of-diaphorina-citri
#19
Juan Camilo Cifuentes-Arenas, António de Goes, Marcelo Pedreira de Miranda, George Andrew Charles Beattie, Silvio Aparecido Lopes
The biology and behaviour of the psyllid Diaphorina citri Kuwayama (Hemiptera: Sternorrhyncha: Liviidae), the major insect vector of bacteria associated with huanglongbing, have been extensively studied with respect to host preferences, thermal requirements, and responses to visual and chemical volatile stimuli. However, development of the psyllid in relation to the ontogeny of immature citrus flush growth has not been clearly defined or illustrated. Such information is important for determining the timing and frequency of measures used to minimize populations of the psyllid in orchards and spread of HLB...
2018: PloS One
https://www.readbyqxmd.com/read/29301691/do-female-reproductive-stage-and-phenotype-influence-thermal-requirements-in-an-oviparous-lizard
#20
Guadalupe López Juri, Margarita Chiaraviglio, Gabriela Cardozo
Reproduction is an energetically costly activity that can alter thermal requirements in Squamata. This phenomenon has been largely studied in many viviparous species; however, little is known about the role of oviparous females in controlling temperature during vitellogenesis and embryo development before oviposition. Diversity of female phenotypes could be associated with diversity of thermoregulatory performance, since thermal requirements are frequently influenced by body shape. Furthermore, studying the thermoregulatory behaviour is fundamental to understand how females regulate their body temperature...
January 2018: Journal of Thermal Biology
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