Morphology of antennal sensilla of the brown spruce longhorn beetle, Tetropium fuscum (Fabr.) (Coleoptera: Cerambycidae)

2014 ◽  
Vol 43 (5) ◽  
pp. 469-475 ◽  
Author(s):  
Colin A. MacKay ◽  
Jon D. Sweeney ◽  
N. Kirk Hillier
Keyword(s):  
Antennal Sensilla ◽  
Longhorn Beetle ◽  
Tetropium Fuscum

Calling behavior of Tetropium fuscum (Coleoptera: Cerambycidae: Spondylidinae)

2010 ◽  
Vol 142 (3) ◽  
pp. 256-260 ◽  
Author(s):  
Matthew A. Lemay ◽  
Peter J. Silk ◽  
Jon Sweeney
Keyword(s):  
Solid Phase ◽  
Visual Assessment ◽  
The Body ◽  
Calling Behavior ◽  
Gas Chromatography Mass Spectrometry ◽  
Future Research ◽  
Calling Behaviour ◽  
Longhorn Beetle ◽  
Tetropium Fuscum

AbstractWe describe the calling posture of the brown spruce longhorn beetle, Tetropium fuscum (F.), and demonstrate, using solid-phase micro-extraction and gas chromatography – mass spectrometry, that this posture is positively correlated with the release of fuscumol, a male-produced long-range pheromone. The posture is observed only in males and is characterized by an extension of the legs that raises the body entirely off the substrate at an angle of approximately 10°, with the posterior end higher than the head. Characterization of the calling posture is a useful diagnostic tool for future research on the reproductive biology of T. fuscum, since a simple visual assessment can be used instead of chemical analysis to determine when males are emitting fuscumol. In addition, we demonstrate that the presence of conspecific males stimulates calling behaviour in T. fuscum. This study contributes much-needed data on the biology and mating behavior of this invasive wood-boring species.

Evidence for Limited Spatial Spread in an Exotic Longhorn Beetle, Tetropium fuscum (Coleoptera: Cerambycidae)

2011 ◽  
Vol 104 (6) ◽  
pp. 1928-1933 ◽  
Author(s):  
Marc Rhainds ◽  
Wayne E. Mackinnon ◽  
Kevin B. Porter ◽  
Jon D. Sweeney ◽  
Peter J. Silk
Keyword(s):  
Spatial Spread ◽  
Longhorn Beetle ◽  
Tetropium Fuscum

Heat as a phytosanitary treatment for the brown spruce longhorn beetle

2004 ◽  
Vol 80 (2) ◽  
pp. 224-228 ◽  
Author(s):  
Lisa Mushrow ◽  
Andrew Morrison ◽  
Jon Sweeney ◽  
Dan Quiring
Keyword(s):  
Heat Treatment ◽  
Moisture Content ◽  
Treated Wood ◽  
Larval Survival ◽  
Wood Products ◽  
Longhorn Beetle ◽  
Different Temperatures ◽  
Phytosanitary Measures ◽  
C 30 ◽  
Tetropium Fuscum

The brown spruce longhorn beetle (BSLB), Tetropium fuscum (Fabr.), is native to Europe but has recently been discovered in Halifax, Nova Scotia, where efforts are underway to eradicate it. If attempts to eradicate this beetle are unsuccessful, phytosanitary measures will have to be developed to ensure continued access to markets. We carried out studies to determine the lethal temperatures for different BSLB life stages in spruce. The beetles were exposed to different temperatures for various time periods in lumber of low and high moisture content. Adults died after 30 and 15 minutes exposure to 40 and 45°C, respectively, and pupae died after 30 minutes exposure to 45°C. Larvae required exposure to 50°C for 30 minutes (or 55°C for 15 minutes) to ensure 100% mortality. Larval survival was slightly higher in wood with low moisture content. The study was repeated a second year for the 50°C/30-minute and 55°C/15-minute treatments for larvae and the 45°C/30-minute for pupae at very low moisture (12-15% oven-dry basis) content, with similar results. Our results demonstrate that heat treatment is an effective phytosanitary method to ensure that wood does not contain any live BSLB.Current phytosanitary guidelines listed by the Canadian Food Inspection Agency in its directive "Canadian Heat-treated Wood Products Certification Program (CHTWPCP) for Export" (56ºC, 30 minutes) are more than adequate to ensure BSLB-free wood. Key words: brown spruce longhorn beetle, heat treatment, hygrothermal stress, Tetropium fuscum, wood borers

Identity and phylogenetic relationships of ophiostomatoid fungi associated with invasive and native Tetropium species (Coleoptera: Cerambycidae) in Atlantic Canada

2003 ◽  
Vol 81 (4) ◽  
pp. 316-329 ◽  
Author(s):  
Karin Jacobs ◽  
Keith A Seifert ◽  
Ken J Harrison ◽  
Thomas Kirisits
Keyword(s):  
Original Description ◽  
Picea Rubens ◽  
Atlantic Canada ◽  
Ophiostomatoid Fungi ◽  
Ophiostoma Piceae ◽  
Longhorn Beetle ◽  
Tetropium Fuscum ◽  
Eurasian Species ◽  
Molecular Characters ◽  
Isolated Species

In 1999, red spruce (Picea rubens Sarg.) trees in a small area of the Halifax Regional Municipality in Nova Scotia, Atlantic Canada, were found to be infested and killed by Tetropium fuscum (Fabr.) (Coleoptera: Cerambycidae), a Eurasian species of longhorn beetle. We isolated and identified the fungi associated with T. fuscum in Halifax and compared them with ophiostomatoid fungi associated with Tetropium spp. on spruce in Europe. Ophiostoma species associated with Tetropium cinnamopterum Kirby (indigenous to and transcontinental in Canada) were also compared with those associated with T. fuscum. Strains were identified based on morphological and molecular characters. Ophiostoma piceae (Münch) Syd. & P. Syd., Pesotum fragrans Mathiesen-Käärik, and Ophiostoma tetropii Mathiesen were the most frequently isolated species. Lack of type material for O. tetropii and discrepancies between the ex-type strain of O. tetropii and its original description prompted us to lectotypify this species and designate epitype material for it. The results suggest that O. tetropii was introduced with T. fuscum from Europe into Atlantic Canada.Key words: Ophiostoma tetropii, Tetropium fuscum, molecular phylogeny, invasive species.

The early development of antenna and antennal sensilla in the noctuid moth, Agrotis segetum (Insecta: Lepidoptera)

1990 ◽  
Vol 48 (3) ◽  
pp. 502-503
Author(s):  
Eric Hallberg ◽  
Lina Hansén
Keyword(s):  
Cell Death ◽  
Stem Cell ◽  
Early Development ◽  
Larval Stage ◽  
Pupal Stage ◽  
Agrotis Segetum ◽  
Antennal Sensilla ◽  
Noctuid Moth ◽  
Standard Procedures

The antennal rudiments in lepidopterous insects are present as disks during the larval stage. The tubular double-walled antennal disk is present beneath the larval antenna, and its inner layer gives rise to the adult antenna during the pupal stage. The sensilla develop from a cluster of cells that are derived from one stem cell, which gives rise to both sensory and enveloping cells. During the morphogenesis of the sensillum these cells undergo major transformations, including cell death. In the moth Agrotis segetum the pupal stage lasts about 14 days (temperature, 25°C). The antennae, clearly seen from the exterior, were dissected and fixed according to standard procedures (3 % glutaraldehyde in 0.15 M cacaodylate buffer, followed by 1 % osmiumtetroxide in the same buffer). Pupae from day 1 to day 8, of both sexes were studied.

Quarantine Protocol Against Coleopteran Borers in Date Palm Offshoots Using Eco2 Fume Gas

2020 ◽  
Vol 31 (4) ◽  
pp. 190-192
Author(s):  
H.A. El-Shafie ◽  
M.E. Mohammed ◽  
A.A. Sallam
Keyword(s):  
Date Palm ◽  
Exposure Period ◽  
Rhynchophorus Ferrugineus ◽  
Internal Tissue ◽  
Red Palm Weevil ◽  
Rhinoceros Beetle ◽  
Planting Material ◽  
Palm Weevil ◽  
Longhorn Beetle ◽  
The World

Date palm offshoots represent an important source of planting material in many date palm-growing countries around the world. Infestation by the red palm weevil ((RPW) Rhynchophorus ferrugineus), the longhorn beetle ((LHB) Jebusaea hammerschmidti) and the rhinoceros beetle ((OB) Oryctes spp.) hinders commercialization and movement of these offshoots. An effective quarantine protocol, with exposure period of 72 h at 25 °C using ECO2FUME (EF) with phosphine concentration of 1500 ppm has been developed for date palm offshoots against these coleopteran internal tissue borers.

scholarly journals Morphological Characterization of the Antennal Sensilla of the Afrotropical Sand Fly, Phlebotomus duboscqi (Diptera: Psychodidae)

2020 ◽  
Author(s):  
Ana Cristina Bahia ◽  
Ana Beatriz F Barletta ◽  
Luciana Conceição Pinto ◽  
Alessandra S Orfanó ◽  
Rafael Nacif-Pimenta ◽  
...  
Keyword(s):  
Morphological Characters ◽  
Morphological Characterization ◽  
Sand Fly ◽  
Antennal Sensilla ◽  
Olfactory Sensilla ◽  
Zoonotic Cutaneous Leishmaniasis ◽  
Electrophysiological Studies ◽  
Phlebotomus Duboscqi ◽  
Well Differentiated ◽  
Function Number

Abstract We investigated by scanning electron microscopy the morphology, distribution, and abundance of antennal sensilla of females Phlebotomus duboscqi sand fly, an important vector of zoonotic cutaneous leishmaniasis at Afrotropical region. Thirteen well-differentiated sensilla were identified, among six types of cuticular sensilla. The probable function of these sensillary types is discussed in relation to their external structure and distribution. Five sensillary types were classified as olfactory sensilla, as they have specific morphological characters of sensilla with this function. Number and distribution of sensilla significantly differed between antennal segments. The results of the present work, besides corroborating in the expansion of the morphological and ultrastructural knowledge of P. duboscqi, can foment future electrophysiological studies for the development of volatile semiochemicals, to be used as attractants in traps for monitoring and selective vector control of this sand fly.

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