Female Caribbean fruit flies with oviposition opportunities remate frequently, two-thirds of them after 1 wk and approximately one-third every subsequent week. Those with limited chances to oviposit remate less frequently, and about half of them mate only once during their lifetime. Ovipositing females regain receptivity to male-produced pher-omones within a week, unlike nonlaying females. Mort...

There has been considerable recent interest in using Drosophila melanogaster to investigate the molecular basis of decision-making behavior. Deciding where to place eggs is likely one of the most important decisions for a female fly, as eggs are vulnerable and larvae have limited motility. Here, we show that many natural genotypes of D. melanogaster prefer to lay eggs near nutritious substrate,...

Flight and reproduction are usually considered as two life history traits that compete for resources in a migratory insect. The beet webworm, Loxostege sticticalis L., manages the costs of migratory flight and reproduction through a trade-off in timing of these two life history traits, where migratory behavior occurs during the preoviposition period. To gain insight into how migratory flight an...

Linking behavioural phenotypes to their underlying genotypes is crucial for uncovering the mechanisms that underpin behaviour and for understanding the origins and maintenance of genetic variation in behaviour. Recently, interest has begun to focus on the transcriptome as a route for identifying genes and gene pathways associated with behaviour. For many behavioural traits studied at the phenot...

Oviposition of Graphocephala atropunctata (Signoret) (Hemiptera: Cicadellidae), the blue-green sharpshooter, was assessed on wild grape, Vitis girdianaMunson, in southern California. Female blue-green sharpshooter preferred to oviposit into new growth, primarily succulent young grape tendrils and canes. Themidrib and petioles of small grape leaves also were used for oviposition, but to a lesser...

Organic infusions created by fermenting white oak (Quercus alba L.) leaves in water were evaluated as sources of attractant odorants and contact oviposition stimulants for gravid Aedes albopictus (Skuse) and Aedes triseriatus (Say). Infusions were bioassayed in the laboratory by giving single females a choice of ovipositing in 1 container with infusion and 7 containers with water. Ae. albopictu...

Summary Bursaphelenchus xylophilus , the causative agent of pine wilt disease, and B. mucronatus are transmitted by Monochamus adults to host trees. Feeding oviposition wounds made vectors primary transmission pathways saltuarius female carrying were reared singly allowed mate with nematode-free males at 5-day intervals, determine ratio nematodes via two different pathways. The survival time, l...

Phytoseiid mites are important for biological control of some pest species including phytophagous and small insects. The species, Phytoseius corniger Wainstein is one the most abundant predatory mite in fruit orchards urban green spaces Razavi Khorasan province, Iran. Biological parameters this feeding on two-spotted spider Tetranychus urticae Koch was studied first time under laboratory condit...

Superparasitism refers to the oviposition behavior of parasitoid females who lay their eggs in an already parasitized host. This often yields intense competition among larvae that are sharing the same host. Why would a female oviposit in such hostile habitat instead of looking for a better quality, unparasitized host? Here we present a continuous-time model of host-parasitoid interaction and di...