Results 91 to 100 of about 226 (122)

A novel sex-specific and inducible monoterpene synthase activity associated with a pine bark beetle, the pine engraver, Ips pini

Naturwissenschaften, 2003
Ecological interactions of conifers and coniferophagous bark beetles are determined in part by terpenoids (isoprenoids), which are major defense metabolites of conifer oleoresin. Curiously, similar compounds are important aggregation pheromones of conifer-attacking bark beetles.
Martin, D., Bohlmann, J., Gershenzon, J., Francke, W., Seybold, S.   +4 more
openaire   +3 more sources

Antennally mediated negative feedback regulation of pheromone production in the pine engraver beetle, Ips pini

Naturwissenschaften, 2006
Bark beetles use monoterpenoid aggregation pheromones to coordinate host colonization and mating. These chemical signals are produced de novo in midgut cells via the mevalonate pathway, and pheromone production may be regulated by a negative feedback system mediated through the antennae.
Matthew D, Ginzel, Jeremy C, Bearfield, Christopher I, Keeling, Colin C, McCormack, Gary J, Blomquist, Claus, Tittiger   +5 more
openaire   +2 more sources

The odour bouquet of three pine engraver beetles (Ips spp.)¹

Journal of Applied Entomology, 1986
AbstractNearly 50 volatile compounds are identified from hindguts of the pine engraver Ips acuminatus, I. sexdentatus and I. lecontei. Among these, α‐phellandren‐8‐ol, ipsdienon, ipsenon and others are described from bark beetles for the first time.
W. Francke, M.‐L. Pan, J. Bartels, W. A. König, J. P. Vité, S. Krawielitzki, U. Kohnle   +6 more
openaire   +1 more source

Cuticular Hydrocarbons as Chemotaxonomic Characters of Pine Engraver Beetles (Ips spp.) in the grandicollis Subgeneric Group

Journal of Chemical Ecology, 1997
Cuticular hydrocarbons were extracted, identified, and evaluated as chemotaxonomic characters from all species of adult Ips pine engraver beetles in the grandicollis subgeneric group. The grandicollis group consists of Ips grandicollis (Eichhoff), I. cribricollis (Eichhoff), I. lecontei Swaine, I. montanus (Eichhoff), I.
Marion Page, Lori J. Nelson, Gary J. Blomquist, Steven J. Seybold   +3 more
openaire   +1 more source

Duration of paternal care in pine engraver beetles: why do larger males care less?

Behavioral Ecology and Sociobiology, 1998
Male pine engravers, Ips pini (Coleoptera: Scolytidae), assist their mates during reproduction by removing the debris that accumulates while females excavate oviposition tunnels in the phloem tissue of host tree bark. Although duration of paternal care and male reproductive success are positively correlated, large males leave their mates and brood ...
Ian C. Robertson, Bernard D. Roitberg
openaire   +1 more source

Acoustic communication in the pine engraver bark beetle: do signals vary between behavioural contexts?

Physiological Entomology, 2017
Abstract Acoustic communication is taxonomically widespread in bark beetles and is proposed to play an important role in a variety of social and defensive behavioural contexts. Yet our understanding of how signals vary between contexts is currently limited.
Andras Dobai, Senthurran Sivalinghem, Raul N.C. Guedes, Jayne E. Yack   +3 more
openaire   +1 more source

Effectiveness of different trapping protocols for outbreak management of the engraver pine beetleIps acuminatus(Curculionidae, Scolytinae)

International Journal of Pest Management, 2012
A population of Ips acuminatus was monitored from 2007 to 2009 by multi-funnel pheromone-baited traps in a Scots pine forest of the southeastern Alps of Europe. We compared the captures obtained with two different lures (Austrian and Spanish pheromones, commercially available) in five infested types of forest.
FACCOLI, MASSIMO, Finozzi V., COLOMBARI, FERNANDA   +2 more
openaire   +2 more sources

Effects of juvenile hormone on gene expression in the pheromone‐producing midgut of the pine engraver beetle, Ips pini

Insect Molecular Biology, 2006
Abstract Juvenile hormone III (JH III) stimulates biosynthesis of the monoterpenoid aggregation pheromone component, ipsdienol, in the anterior midgut of the male pine engraver beetle, Ips pini (Say).
C I, Keeling, J C, Bearfield, S, Young, G J, Blomquist, C, Tittiger   +4 more
openaire   +2 more sources

Efficacy of Systemic Insecticides for Protection of Loblolly Pine Against Southern Pine Engraver Beetles (Coleoptera: Curculionidae: Scolytinae) and Wood Borers (Coleoptera: Cerambycidae)

Journal of Economic Entomology, 2006
We evaluated the efficacy of the systemic insecticides dinotefuran, emamectin benzoate, fipronil, and imidacloprid for preventing attacks and brood production of southern pine engraver beetles (Coleoptera: Curculionidae: Scolytinae) and wood borers (Coleoptera: Cerambycidae) on standing, stressed trees and bolt sections of loblolly pine, Pinus taeda L.,
Donald M, Grosman, William W, Upton
openaire   +2 more sources

Role of chirality in olfactory-directed behavior: Aggregation of pine engraver beetles in the genusIps (Coleoptera: Scolytidae)

Journal of Chemical Ecology, 1993
There has been a renaissance of interest in the significance of enantiomeric composition in biological systems. Three chiral monoterpene alcohol aggregation pheromone components (ipsenol, ipsdienol, andcis-verbenol) commonly isolated from engraver beetles (Ips spp.) provide a paradigm for this theme as it relates to olfactory-guided insect behavior ...
openaire   +2 more sources