Ciancio, John J Turnbull, Kurtis F Gariepy, Tara D Sinclair, Brent J
Published in
Journal of insect physiology
Halyomorpha halys (Hemiptera: Pentatomidae) is an emerging pest which established in Ontario, Canada, in 2012. Halyomporpha halys overwinters in anthropogenic structures as an adult. We investigated seasonal variation in the cold tolerance, water balance, and energetics of H. halys in southwestern Ontario. We also induced diapause in laboratory-rea...
Raviv, Dagan Gefen, Eran
Published in
Journal of insect physiology
A postprandial increase in metabolic rate is typical in all studied animal groups. The phenomenon, termed specific dynamic action (SDA), is understudied in terrestrial arthropods, and arachnids in particular. To the best of our knowledge, this is the first report of SDA properties in scorpions, which are temperature-dependent as in other poikilothe...
Reznik, Sergey Ya Voinovich, Natalia D Samartsev, Konstantin G
Published in
Journal of insect physiology
Adaptive grandmaternal thermal effect, wherein the grandmaternal thermal environment affects the induction of progeny diapause two generations later, has not been studied in any insect system. We have studied this effect in the parthenogenetic egg parasitoid Trichogramma telengai Sor. (Hymenoptera: Trichogrammatidae) under laboratory conditions. Th...
Tasnin, Mst Shahrima Merkel, Katharina Clarke, Anthony R
Published in
Journal of insect physiology
Olfaction is an essential sensory modality of insects which is known to vary with age. In short-lived insects odour response generally declines rapidly with increasing age, but how increasing age affects the olfactory response of long-lived insects is less known and there may be different life-time patterns of olfactory response. Here, we examine t...
Towarnicki, Samuel G Kok, Leanne M Ballard, J William O
Published in
Journal of insect physiology
In this study, we test the hypothesis that Drosophila larvae producing mildly elevated levels of endogenous mitochondrial reactive oxygen species (ROS) benefit in stressful environmental conditions due to the priming of antioxidant responses. Reactive oxygen species (ROS) are produced as a by-product of oxidative phosphorylation and may be elevated...
Maeno, Koutaro Ould Piou, Cyril Ghaout, Saïd
Published in
Journal of insect physiology
Egg-size adjustment is one of the important plastic life-history traits for animals living in heterogeneous environments. The adaptive investment hypothesis predicts that mothers should increase progeny size according to certain cues predicting adverse future conditions of their offspring. However, reproductive resources are limited, and females ha...
Marliére, Newmar Pinto Lorenzo, Marcelo Gustavo Martínez Villegas, Luis Eduardo Guarneri, Alessandra Aparecida
Published in
Journal of insect physiology
The triatomine bug Rhodnius prolixus is a main vector of Chagas disease, which affects several million people in Latin-America. These nocturnal insects spend most of their locomotory activity during the first hours of the scotophase searching for suitable hosts. In this study we used multivariate analysis to characterize spontaneous locomotory acti...
Wang, Meng Zhang, Shuangshuang Shi, Yu Yang, Yihua Wu, Yidong
Published in
Journal of insect physiology
Helicoverpa armigera is one of the most serious agricultural insect pests of global importance. It is highly polyphagous and depends on digestive serine proteases to degrade proteins to peptides and to amino acids. H. armigera has evolved adaptive ability to compensate for the inhibition of plant defensive protease inhibitors (PIs) in its diet by o...
Dancewicz, Katarzyna Slazak, Blazej Kiełkiewicz, Małgorzata Kapusta, Małgorzata Bohdanowicz, Jerzy Gabryś, Beata
Published in
Journal of insect physiology
Cyclotides are defense peptides produced by several plant families. Viola spp. (Violaceae) produce an array of cyclotides with varying biological activities. The peach potato aphid Myzus persicae (Sulz.) (Hemiptera: Aphididae) is a generalist that feeds on the secondary hosts of over 40 plant families, including Violaceae. The present work aimed to...
Camp, Allison A Yun, Jeonga Chambers, Samantha A Haeba, Maher H LeBlanc, Gerald A
Published in
Journal of insect physiology
Environmental sex determination occurs in many organisms, however the means by which environmental stimuli are translated into endocrine messages remains poorly understood. The N-methyl-ᴅ-aspartate receptor (NMDAR) was evaluated as a candidate neural sensor of environmental signals linking environmental cues to endocrine responses using the crustac...
