Results 141 to 150 of about 524,657 (365)
Insect Science, EarlyView.This study investigated the dietary composition of Sycanus bifidus, a generalist predator of the assassin bug that is artificially released into citrus orchards, and uncovered its trophic structure across various pest species using metabarcoding‐based molecular gut content analysis.
Weidong Huang +9 more
wiley +1 more source
A Comparative Analysis of Host--Parasitoid Models with Density Dependence Preceding Parasitism [PDF]
arXiv, 2020 We present a systematic comparison and analysis of four discrete-time, host--parasitoid models. For each model, we specify that density-dependent effects occur prior to parasitism in the life cycle of the host. We compare density-dependent growth functions arising from the Beverton--Holt and Ricker maps, as well as parasitism functions assuming either ...
arxiv
Observations of the Biology of \u3ci\u3ePhasgonophora Sulcata\u3c/i\u3e (Hymenoptera: Chalcididae), a Larval Parasitoid of the Twolined Chestnut Borer, \u3ci\u3eAgrilus Bilineatus\u3c/i\u3e (Coleoptera: Buprestidae), in Wisconsin [PDF]
, 2017 Phasgorzophora sulcata Westwood was the principal larval parasitoid of Agrilus bilineatus (Weber) during a study conducted in a natural oak-hardwood forest in the Kettle Moraine State Forest, Jefferson County, Wisconsin.
Benjamin, D. M, Haack, R. A, Schuh, B. A
core +2 more sources
Methods in Ecology and Evolution, EarlyView.Abstract Wild bees (Hymenoptera: Anthophila) are important pollinators and essential for maintaining ecosystem health. The majority of bee species are ground‐nesting, and all bees spend most of their lifetime inside the nest. Still, most studies and monitoring schemes assess wild bees during flower visitation, allowing no conclusion about their nest ...
Christopher Hellerich +5 more
wiley +1 more source
Competition among eggs shifts to cooperation along a sperm supply gradient in an external fertilizer [PDF]
arXiv, 2015 Competition among gametes for fertilization imposes strong selection. For external fertilizers, this selective pressure extends to eggs for which spawning conditions can range from sperm limitation (competition among eggs) to sexual conflict (overabundance of competing sperm toxic to eggs).
arxiv
The $P^*$ rule in the stochastic Holt-Lawton model of apparent competition [PDF]
arXiv, 2020 In $1993$, Holt and Lawton introduced a stochastic model of two host species parasitized by a common parasitoid species. We introduce and analyze a generalization of these stochastic difference equations with any number of host species, stochastically varying parasitism rates, stochastically varying host intrinsic fitnesses, and stochastic immigration ...
arxiv
Assessing risks and benefits of floral supplements in conservation biological control [PDF]
, 2010 The use of flowering field margins is often proposed as a method to support biological control in agro-ecosystems. In addition to beneficial insects, many herbivores depend on floral food as well.
Lenteren, J.C., van +3 more
core +2 more sources
Annals of Applied Biology, EarlyView.Outbreak‐prone insects often undergo explosive population growth despite high natural mortality caused by predators, disease, host toxicity and inclement weather. Although contemporary forest pest management focuses on short‐term tree protection, there is increasing interest in developing strategies to directly suppress outbreaks.
Rob C. Johns +4 more
wiley +1 more source
Notes on the Vanhorniidae (Hymenoptera) [PDF]
, 2017 The biology and taxonomy of Vanhornia eucnemidarum Crawford, a rare and specialized parasitoid of Eucnemidae, is reviewed.
Deyrup, Mark
core +2 more sources
Annals of Applied Biology, EarlyView.Semi‐tillage, a widely used agricultural method to improve water availability and minimise soil erosion in crops, may compromise pest control in olive groves. Stable isotopes (N15 and C13) analysis showed an effect of semi‐tillage in the composition of the basal resources of potential natural enemies in the three olive grove strata: These changes may ...
M. Morente, F. Ruano
wiley +1 more source