Sexual attraction among Lygus (Hemiptera: Miridae) species

2003 ◽  
Vol 135 (5) ◽  
pp. 733-735 ◽  
Author(s):  
A.R. Wardle ◽  
J.H. Borden
Keyword(s):  
British Columbia ◽  
North America ◽  
Sex Pheromones ◽  
Sexual Attraction ◽  
The Other ◽  
Lygus Lineolaris ◽  
Lygus Hesperus ◽  
Tarnished Plant Bug ◽  
Major Pest

Lygus bugs (Hemiptera: Miridae), particularly the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), and Lygus hesperus Knight, are serious pests in North America (Hedlund and Graham 1987). Sex pheromones have been identified in some mirids (Smith et al. 1991; Millar et al. 1997; Millar and Rice 1998) but not in Lygus spp. (Ho and Millar 2002), despite evidence that lygus bug females produce sex pheromones (Scales 1968; Strong et al. 1970; Graham 1987; McLaughlin 1996; Scott and Snodgrass 2000). Graham (1987) found that L. lineolaris and Lygus elisus Van Duzee males were attracted to females of their own and the other species but not to L. hesperus females, whereas L. hesperus males were attracted only to conspecific females. In southwestern British Columbia, Lygus shulli Knight is a major pest in such diverse sites as conifer nurseries and greenhouses (Gillespie et al. 2000). Our objective was to determine whether sexual attraction occurs in L. shulli and whether L. shulli is cross-attracted to females of two other Lygus spp.

RECORDS OF SOME SPECIES OF POLYCHAETA NEW TO BRITISH COLUMBIA AND OF EXTENSIONS IN DISTRIBUTION OF SOME OTHERS

1966 ◽  
Vol 44 (5) ◽  
pp. 839-849 ◽  
Author(s):  
C. Berkeley
Keyword(s):  
British Columbia ◽  
North America ◽  
West Coast ◽  
Vancouver Island ◽  
The Other ◽  
The West ◽  
New Subspecies ◽  
Northeast Pacific ◽  
Considerable Depth ◽  
Geographical Locations

Twenty-five species of Polychaeta recently collected off the coast of British Columbia are discussed. Most were taken in waters of considerable depth off the west coast of Vancouver Island. Sixteen are new to British Columbia. Most of these are known from farther south on the west coast of North America, but some from much shallower depths than those from which they are now recorded; two of them are new to the northeast Pacific; one is a new subspecies. The other nine have been previously known from British Columbia, but they are now recorded from much greater depths than hitherto, or in new geographical locations.

ATTRACTION OF MALE GREEN APPLE BUGS, LYGOCORIS COMMUNIS (HEMIPTERA: MIRIDAE), TO CAGED FEMALES

1982 ◽  
Vol 114 (8) ◽  
pp. 765-766 ◽  
Author(s):  
G. Boivin ◽  
R. K. Stewart
Keyword(s):  
Sex Pheromone ◽  
Sex Pheromones ◽  
Lygus Lineolaris ◽  
Pest Species ◽  
Apple Orchards ◽  
Lygus Hesperus ◽  
Annual Cycles ◽  
Pheromone Emission

In Quebec apple orchards, pheromones are used to monitor a number of pest species (Rivard et al. 1978; Paradis et al. 1979). However, few studies have looked for the presence of sex pheromones in mirids. Scales (1968) detected the presence of sex pheromone in a mirid, Lygus lineolaris (P. de B.), as did Strong et al. (1970) for Lygus hesperus Knight. Subsequently, the daily and annual cycles of pheromone emission in Distantiella theobroma (Dist.) (King 1973) and Helopeltis clavifer (Walker) (Smith 1977) were established.

Productivity of Owikeno Lake, British Columbia

1969 ◽  
Vol 26 (5) ◽  
pp. 1363-1368 ◽  
Author(s):  
David W. Narver
Keyword(s):  
British Columbia ◽  
North America ◽  
Primary Productivity ◽  
Sockeye Salmon ◽  
Nursery Area ◽  
The Other ◽  
Lake Productivity ◽  
The Third ◽  
Annual Total

Although Owikeno Lake is the third highest producer of adult sockeye salmon in North America in terms of mean annual total return (catch plus escapement) per unit of lake nursery area, limited measurements of other indices of lake productivity suggest that its primary productivity is much lower than that of the other four highest sockeye-producing lakes. The implications of these results to sockeye production are discussed.

Lygus oblineatus. [Distribution map].

1954 ◽  
Author(s):  
Keyword(s):  
North America ◽  
Geographical Distribution ◽  
Lygus Lineolaris ◽  
Distribution Map ◽  
Tarnished Plant Bug ◽  
New Distribution

Abstract A new distribution map is provided for Lygus oblineatus[Lygus lineolaris] (Say) (Tarnished Plant Bug). Hosts: Lucerne, cotton, apple, peach; polyphagous. Information is given on the geographical distribution in NORTH AMERICA, Canada, Mexico, U.S.A. This map has since been incorporated into Map No. 604, Lygus lineolaris (Palisot de Beauvois).

SPLENDIDOFILARIA PECTORALIS N. SP. (FILARIOIDEA: ONCHOCERCIDAE) FROM TETRAONID BIRDS IN NORTHWESTERN NORTH AMERICA

1967 ◽  
Vol 45 (6) ◽  
pp. 1135-1147 ◽  
Author(s):  
George G. Gibson
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
Coastal Region ◽  
The Other ◽  
Fourth Stage ◽  
Bonasa Umbellus ◽  
Dendragapus Obscurus ◽  
Subcutaneous Tissues ◽  
Northwestern North America

Descriptions are presented for the adults and fourth-stage larvae of Splendidofilaria pectoralis n. sp. from the pectoral subcutaneous tissues of blue grouse, Dendragapus obscurus pallidus Swarth, in British Columbia, Canada, and for its microfilaria. It is concluded tentatively that in British Columbia this species is absent from the coastal region and is restricted to Galliformes (probably to the Tetraonidae). The new species is reported from the following additional hosts in British Columbia: Franklin's grouse, Canachites canadensis franklinii; ruffed grouse, Bonasa umbellus affinis; sharp-tailed grouse, Pedioecetes phasianellus Columbianus; and from two hosts in Alaska: spruce grouse, C. c. atratus, and sharp-tailed grouse, P. p. caurus. Observations on prevalence, epizootiology, and pathology of S. pectoralis n, sp. are discussed. The most similar of the other species of Splendidofilaria inhabiting subcutaneous sites is S. papillocerca (Lubimov, 1946) from which S. pectoralis u, sp. differs most noticeably as follows: vagina about half as long, spicules longer, tail of female much longer.

Combining the use of trap crops and insecticide sprays to control the tarnished plant bug (Hemiptera: Miridae) in strawberry (Rosaceae) fields

2019 ◽  
Vol 151 (02) ◽  
pp. 251-259 ◽  
Author(s):  
F. Dumont ◽  
C. Provost
Keyword(s):  
Block Design ◽  
Lygus Lineolaris ◽  
White Mustard ◽  
Trap Crop ◽  
Tarnished Plant Bug ◽  
Trap Crops ◽  
Chemical Treatments ◽  
Behavioural Avoidance ◽  
Major Pest ◽  
Insecticide Sprays

AbstractThe tarnished plant bug, Lygus lineolaris (Palisot de Beauvois) (Hemiptera: Miridae), causes severe damages in strawberry (Fragaria × ananassa Duchesne ex Rozier; Rosaceae) fields in Québec, Canada. Currently, only chemical insecticides successfully control that major pest. Lygus lineolaris aggregate in trap crops such as buckwheat (Fagopyrum esculentum Moench; Polygonaceae) and white mustard (Sinapis alba Linnaeus; Brassicaceae) but do not remain long enough on these plants to significantly reduce damages on strawberries. However, the attractiveness of the trap crop gives the opportunity to gather L. lineolaris in an area of the field where chemical treatments could be applied more efficiently. The aim of this study was to test the effectiveness of the combination of trap crop (buckwheat and white mustard) and chemical treatments to control L. lineolaris. Randomised complete-block design included treatment with either no trap crop, buckwheat, or white mustard row planted close to strawberry plants. Half blocks were treated with insecticide (cypermethrin) sprayed on strawberry plants (in treatment without trap crop) or directly on trap crop. We found that L. lineolaris was more abundant on buckwheat than on white mustard or strawberry plants. Insecticide application on trap crops reduced the population on these hosts, but did not reduce L. lineolaris on adjacent strawberry plants. Behavioural avoidance and physiological pesticide resistance could explain this result.

REVISION OF THE NORTH AMERICAN SPECIES OF SLATEROCORIS (HETEROPTERA: MIRIDAE)

1968 ◽  
Vol 100 (11) ◽  
pp. 1121-1137 ◽  
Author(s):  
Leonard A. Kelton
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
North American ◽  
Male Genitalia ◽  
North American Species ◽  
The Other ◽  
Subsequent Paper ◽  
The North

AbstractNine new species of Slaterocoris Wagner are described from North America: pilosus from British Columbia; alpinus from Colorado; apache from Arizona, Colorado, and Utah; flavipes, solidaginis, and sparsus from California; argenteus, grandis, and simplex from Durango, Mexico. The other species in the genus are: ambrosiae (Kngt.), atratus (Uhl.), atritibialis (Kngt.), breviatus (Kngt.), croceipes (Uhl.), hirtus (Kngt.), longipennis Kngt., mohri (Kngt.), pallidicornis (Kngt.), pallipes (Kngt.). robustus (Uhl.), rubrofemoratus Kngt., sheridani Kngt., stygicus (Say), and utahensis Kngt. Strongylocoris uniformis Van D. is placed in synonymy with Stiphrosoma robusta Uhl. Strongylocoris albibasis Knight does not belong to Slaterocoris and will be dealt with in a subsequent paper. All species are keyed and the male genitalia illustrated.

Gemmae in Tetralophozia setiformis (Anastrophyllaceae, Marchantiophyta) and their second record in Eurasia

2017 ◽  
Vol 51 ◽  
pp. 242-250
Author(s):  
M. V. Dulin
Keyword(s):  
British Columbia ◽  
Asexual Reproduction ◽  
Leaf Shape ◽  
Leaf Size ◽  
Komi Republic ◽  
The Other ◽  
Widespread Species ◽  
Northern Urals ◽  
Sexual And Asexual Reproduction ◽  
Murmansk Region

Tetralophozia setiformis is a widespread species occurring usually without organs of sexual and asexual reproduction. Gemmae of Tetralophozia setiformis were observed for the second time in Russia and Eurasia in the Northern Urals, Komi Republic. They form compact masses over upper leaves. The compact masses consist largely (70 %) of immature gemmae. Description of gemmae and gemmiparous shoots from the Northern Urals and their comparison with those from the other known localities, namely British Columbia (Canada) and the Murmansk Region (European Russia) were carried out. The gemmiparous plants of T. setiformis from the Northern Urals have approximately the same width as plants without gemmae but they are shorter. The leaves of gemmiparous plants from the Northern Urals are similar to leaves of gemmiparous plants from British Columbia. The leaf shape in upper part of the gemmiparous shoots varies from the typical to ± modified from gemmae production. These leaf shape transitions include reduction of leaf size and lobe number from 4 to 2–3, suppression of development and disappearance of characteristic teeth at the base of sinus. Gemmae size (17 × 22 μm) of plants from the Northern Urals is within variability recorded for plants from the Murmansk Region and British Columbia.

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