Results 101 to 110 of about 7,986 (258)

The pace and shape of ant ageing

Biological Reviews, EarlyView.
ABSTRACT Ants have been proposed as good models to study ageing and the effects of extrinsic mortality because of their long lifespans and plasticity of ageing within species. We discuss how age‐dependent extrinsic mortality might influence queen lifespan, and how the effect of age‐independent extrinsic mortality needs further study, accounting for ...
Luisa M. Jaimes‐Nino, Jan Oettler
wiley   +1 more source

Ecosystem services provided by spiders

Biological Reviews, EarlyView.
ABSTRACT Spiders, ubiquitous and abundant predators in terrestrial ecosystems, often are the subjects of an unjust negative perception. However, these remarkable creatures stand as unsung heroes within our ecosystems, contributing a multitude of ecosystem services critical to human well‐being.
Pedro Cardoso, Stano Pekár, Klaus Birkhofer, Angela Chuang, Caroline Sayuri Fukushima, Eileen A. Hebets, Yann Henaut, Thomas Hesselberg, Jagoba Malumbres‐Olarte, Ondřej Michálek, Radek Michalko, Catherine Scott, Jonas Wolff, Stefano Mammola   +13 more
wiley   +1 more source

Gall Wasp Transcriptomes Unravel Potential Effectors Involved in Molecular Dialogues With Oak and Rose

Frontiers in Physiology, 2019
To gain insight into wasp factors that might be involved in the initial induction of galls on woody plants, we performed high throughput (454) transcriptome analysis of ovaries and venom glands of two cynipid gall wasps, Biorhiza pallida and Diplolepis ...
Sébastien Cambier, Olivia Ginis, Sébastien J. M. Moreau, Philippe Gayral, Jack Hearn, Graham N. Stone, David Giron, Elisabeth Huguet, Jean-Michel Drezen   +8 more
doaj   +1 more source

Multiple mating is not driven by size and sperm management in black soldier fly (Hermetia illucens)

Entomologia Experimentalis et Applicata, EarlyView.
We investigated mating in black soldier fly (BSF), Hermetia illucens (Diptera: Stratiomyidae), an important source of animal feed. The number of spermatozoa stored in the spermathecae of females does not change after one, two and three matings of the male. BSF males and females mate multiple times under controlled conditions. The number of sperm in the
Frédéric Manas, Pascaline Venon, Lulin Yang, Carole Labrousse, Christophe Bressac   +4 more
wiley   +1 more source

Allee effects in a Ricker-type predator-prey system [PDF]

arXiv, 2014
We study a discrete host-parasitoid system where the host population follows the classical Ricker functional form and is also subject to Allee effects. We determine basins of attraction of the local attractors of the single population model when the host intrinsic growth rate is not large.
arxiv  

Multiparasitism enables a specialist endoparasitoid to complete parasitism in an unsuitable host caterpillar

Scientific Reports
Parasitoid wasps serve as natural enemies of numerous insect species; therefore, knowledge of host-parasitoid interactions is fundamental for understanding ecosystems. Each endoparasitoid wasp taxon exhibits a specific host range.
Kazumu Kuramitsu, Yooichi Kainoh, Kotaro Konno   +2 more
doaj   +1 more source

Cascading effects of grazing intensity on predatory arthropod and parasitoid densities

Ecological Entomology, EarlyView.
The impacts of grazing on different taxa may also be indirect, depending upon trophic interactions with other members of the community. We studied the effects of grazing by ungulates on pompilid wasps (Hemipepsis and Pepsis hawk wasps) and tarantulas (Aphonopelma hentzi) by comparing the cover of forbs and the densities of hawk wasps and of tarantula ...
Jackie Billotte, Lorna McCallister, Ruth A. Hufbauer, Richard P. Reading   +3 more
wiley   +1 more source

Towards improved pest management of the soybean aphid [PDF]

arXiv
The soybean aphid (\emph{Aphis glycines}) is an invasive insect pest that continues to cause large-scale damage to soybean crops in the North Central United States. The current manuscript proposes several mathematical models for the top-down bio-control of the aphid, as well as control via pesticides and neonicotinoids.
arxiv  

Measurement of Host Curvature by The Parasitoid Wasp Trichogramma Minutum, and Its Effect on Host Examination and Progeny Allocation [PDF]

, 1987
J. Schmidt, J. J. B. Smith
openalex   +1 more source

Tree hollow parameters and their effects on saproxylic arthropod diversity: A multi‐taxon approach

Insect Conservation and Diversity, EarlyView.
Tree hollows are keystone structures for biodiversity in forests and support saproxylic arthropods but are declining in central Europe due to intensive forest management, threatening these invertebrate communities. Research using DNA metabarcoding examined non‐beetle arthropods in 40 beech tree hollows, exploring their habitat requirements in southern ...
Bastian Schauer, Benjamin Henneberg, Elisabeth Obermaier, Heike Feldhaar   +3 more
wiley   +1 more source