TRAPPING MALE MOTHS OF GRAMMIA BLAKEI (GRT.) (LEPIDOPTERA: ARCTIIDAE) WITH FEMALE-BAITED TRAPS AT GROUND LEVEL

1989 ◽  
Vol 121 (1) ◽  
pp. 105-106 ◽  
Author(s):  
J.R. Byers

Woolly-bear caterpillars of Grammia blakei (Grt.) are sometimes abundant in early spring on overgrazed native range pastures in southern Alberta and southwestern Saskatchewan, occasionally reaching population densities exceeding 50 per square metre (Byers 1988). Grammia blakei has a wide distribution in the Great Plains and Intermountain regions of western North America. Although the brownish-black caterpillars are quite often abundant, the moths (Fig. l), which are not attracted to food baits or light traps, have been rarely collected and few field-caught specimens are present in collections (D.C. Ferguson, U.S. National Museum, Washington, DC; J.D. Lafontaine, Biosystematics Research Centre, Ottawa, personal communication).

Parasitology ◽  
1981 ◽  
Vol 83 (3) ◽  
pp. 639-652 ◽  
Author(s):  
M. L. Sood

SUMMARYHaemonchosis is an acute problem in India. Three species of Haemonchus occur. These are H. contortus (Rudolphi, 1803) which occurs in sheep, goat, cattle, buffalo and other ruminants; H. longistipes Railliet && Henry, 1909 occurring in camels and H. similis Travassos, 1941 in cattle. Seasonal fluctuation of H. contortus occurs, with infection being more frequent in autumn ≻ summer ≻ winter ≻ spring, and infection in sheep and goats has been reported to be 100 %. Various aspects of haemonchosis have been investigated. However, the fundamental and the most challenging areas in Haemonchus research remain almost untouched. In order to forecast the development of haemonchosis, epidemiological studies should be undertaken on the prevalence, distribution and seasonal incidence of the worm to understand the effects of climatological factors like rainfall, humidity and temperature. The sparse and inadequate studies of metabolism need to be extended to other areas of Haemonchus biochemistry to provide additional possibilities for exploration of hostparasite differences. Clinical haemonchosis in sheep, goats and other ruminants should be studied in order to calculate losses caused by mortality and the cost of anthelmintic medication. Most anthelmintics are expensive, and are not easily available to our farming community, therefore a search for many more indigenous anthelmintics (such as Wopell, Krimos, Sonex etc) must be made. Detailed knowledge of the mode of action and route of entry of anthelmintics at the molecular level could also be beneficial, particularly when the strains of H, contortus have been identified as resistant to some anthelmintics. The prospects of producing a vaccine against H. contortus should be explored. Attempts in this field have already been made by overseas workers (see Clegg && Smith, 1978) and in India too, work has been undertaken at Kerala (Sathianesan, personal communication). Therefore, because of its economic importance and wide distribution, H. contortus provides fascinating research material particularly in the warmer regions of the world.


1933 ◽  
Vol 11 (3) ◽  
pp. 119-136 ◽  
Author(s):  
J. N. Oldham

In the early spring of 1931 one or two hibernating adults of Phyllotrela undulata Kutsch., recovered from a piece of tree bark, were dissected by chance and found to be parasitized by a nematode. Realising that the host insect was not only of wide distribution throughout the country but also that, amongst farmers and other crop growers, it was known as a serious and destructive pest, this accidental record of parasitism led the writer to enter upon the present study.


2002 ◽  
Vol 134 (5) ◽  
pp. 689-697 ◽  
Author(s):  
P. Morewood ◽  
W.D. Morewood ◽  
R.G. Bennett ◽  
G. Gries

AbstractIn seed orchards of Douglas-fir, Pseudotsuga menziesii (Mirbel) Franco (Pinaceae), located in Washington State and Oregon, United States, we tested whether catches of male Douglas-fir cone gall midges, Contarinia oregonensis Foote, in pheromone-baited traps can be used to predict the extent of galled scales (= seed loss at harvest) caused by developing larvae. In 2000, 27 experimental blocks (4–7 ha each) were selected. In each block we recorded mean numbers of (i) male C. oregonensis captured in 20 pheromone-baited Wing traps, (ii) egg-infested scales in up to 50 conelets in early spring, and (iii) galled scales in up to 50 cones in late summer. In 2001, the experiment was repeated with 20 Delta traps in each of 26 experimental blocks. Moreover, catches of C. oregonensis and nontarget insects in Delta traps and Wing traps were compared in one additional orchard block in 2001. In both years there were positive correlations between mean numbers of egg-infested and galled scales and between mean numbers of captured male C. oregonensis and mean numbers of both egg-infested and galled scales, particularly when only experimental blocks with ≥50% of trees bearing at least 5 conelets were considered. Our results suggest that 4 or 2 captured male C. oregonensis in Wing or Delta traps, respectively, warrant insecticidal control of C. oregonensis. Delta traps, which captured fewer nontarget insects, would be more suitable than Wing traps for operational implementation of this technology.


1999 ◽  
Vol 131 (4) ◽  
pp. 541-547 ◽  
Author(s):  
A.S. McClay ◽  
J.L. Littlefield ◽  
J. Kashefi

AbstractA European gall mite, Aceria malherbae Nuzzaci, was released and established in southern Alberta and Montana as a biological control agent for field bindweed, Convolvulus arvensis L. (Convolvulaceae). Populations of the mite survived for up to 4 years at some sites and caused slight to severe damage to the weed. The establishment of A. malherbae in these areas suggests that it could be established throughout the North American range of field bindweed.


1979 ◽  
Vol 111 (1) ◽  
pp. 11-14 ◽  
Author(s):  
G. E. Swailes ◽  
D. L. Struble

AbstractSex attractant traps for males of the clover cutworm, Scotogramma trifolii (Rottenberg), on farms in southern Alberta caught more moths within crops or on fallow than those near or within the farmyards except for traps immediately on the south side of the yard For males of the army cutworm, Euxoa auxiliaris (Grote), two trap placements in open areas were more effective than locations within the farmyard, again with the exception of the traps on the south side of the yards. Traps 2 m high caught significantly fewer moths than those at 1 m or ground level and the crop in which the trap was placed had no significant influence on catch of either cutworm.


1986 ◽  
Vol 106 (3) ◽  
pp. 629-633
Author(s):  
B. Grof

Andropogon gayanus Kunth var. bisquamulatus Hack, is a polymorphic bunch grass, widely distributed throughout most of the tropical and subtropical savannahs of Africa, south of the Sahara in areas with a long dry season. This grass was introduced into the Colombian Llanos from the Shika Agricultural Research Station, northern Nigeria, in 1974. Subsequent to its introduction, a series of agronomic trials were initiated by Centro Internacional de Agricultura Tropical (CIAT) at the Carimagua Research Centre and various national research institutions in Latin America to evaluate the potential of A. gayanus, primarily in the vast Ultisol and Oxisol savannah regions of the continent. As a result of further evaluation at a number of locations, accession A. gayanus var. bisquamulatus CIAT 621 was released in 1980 in Brazil as cv. Flanaltina and in Colombia as cv. Carimagua 1. During 1982–3 Peru, Venezuela and Panama subsequently released the same accession under the cultivar names of San Martin, Sabanero and Veranero, respectively. It is estimated that 168000 ha have been sown with A. gayanus in Brazil since 1982 (J. E. Ferguson, C. Sere and R. de Andrade, personal communication). Smaller areas have been established in other countries.


2006 ◽  
Vol 86 (1) ◽  
pp. 173-175 ◽  
Author(s):  
S. Bittman ◽  
S. N. Acharya ◽  
D. E. Hunt

Chilliwack-VR is a medium-maturing orchardgrass (Dactylis glomerata L.) population with high levels of resistance to Cocksfoot Mottle Virus (CfMV) suited to silage and hay production in regions with a moderate temperate climate. The population was developed at the Pacific Agri-Food Research Centre (PARC), Agriculture and Agri-Food Canada (AAFC), Agassiz, BC, in collaboration with AAFC Research Centre, Lethbridge, AB. In BC trials, Chilliwack-VR yielded 5% more than the check cultivar Potomac without inoculation with CfMV and 23% better than the check when inoculated with the virus. In a southern Alberta trial, Chilliwack-VR survived for 3 yr and yielded as much biomass as a winterhardy check cultivar, Kay. Key words: Orchardgrass, Cocksfoot Mottle Virus resistance, Dactylis glomerata


Atmosphere ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1121
Author(s):  
Carlos J. Bucaram ◽  
Frank M. Bowman

Oil and gas production in the Bakken region increased dramatically during the past decade. A WRF-Chem modeling study of the Northern Great Plains was conducted for a July 2010 baseline scenario prior to the largest of these production increases. Simulations using the RACM-MADE/SORGAM, CBMZ-MOSAIC, and MOZART-MOSAIC chemistry-aerosol mechanisms were compared to each other and against ground level observations. All three gas-aerosol modules produced similar prediction results for O3, and NO2, with moderate correlation to hourly measurements and monthly average values overpredicted by 20% for O3 and underpredicted by 5% for NO2. Monthly average PM2.5 concentrations were relatively accurate, but correlation to hourly measurements was very low and PM2.5 subspecies exhibited high variability with a mix of over and underpredictions depending on the mechanism. Pollutant concentrations were relatively low across the mostly rural study domain, especially in the Bakken region. Results from this work can be used as a basis of comparison for studies of more recent time periods that include increased oil and gas-related emissions.


2021 ◽  
Vol 26 (2) ◽  
pp. 188-193
Author(s):  
Hans-Martin Sass ◽  
Hanna Hubenko

Hans-Martin Sass, Honorary Professor of Philosophy (Ruhr University, Bochum, Germany). Founder and board member of the Centre for Medical Ethics (CME), Bochum, Germany. Honorary Senior Research Fellow at Kennedy Institute of Ethics at Georgetown University, Washington, DC. Honorary Professor of the Bioethics Research Centre, Beijing. He has written more than 60 books and pamphlets, more than 250 articles in professional journals. Editor of the Ethik in der Praxis/ Practical ethics, Muenster: Lit. Founder and co-editor of the brochures “Medizinethische Materialien”, Bochum: ZME. He has lectured in Argentina, Austria, Belgium, Bulgaria, Brazil, Canada, Croatia, the Chech Republic, India, Iran, Israel, Italy, Japan, France, the Netherlands, the Philippines, Poland, Portugal, Russia, Spain, Switzerland and Taiwan. The interview devoted to exposition of the concept of bioethics in America and Germany, as well as the professor`s attitude to the idea of the integrative concept of bioethics. The concept of integrative bioethics has been developed in different countries, a component of this concept is the idea of the need for discussion on bioethics in various sectors of society (not only medical). Equally important in this concept are the definitions of bioethics and the bioethical imperative proposed by Fritz Jahr in 1926. The scientist`s article, which was discovered in 1997, contains a new format of bioethical ideas, as well as a valuable opportunity to enhance understanding the term of bioethics as an integrative science. Interview has been conducted by Hanna Hubenko as a part of the joint international course «Integrative Bioethics». At the meeting it was discussed the experience of cooperation and plans for the future. Cooperation and feedback between scientists remains an unconditional prerogative, also in a pandemic situation (to be continued).


1978 ◽  
Vol 68 (1) ◽  
pp. 31-46 ◽  
Author(s):  
R. J. Marks

AbstractThree suitable sex pheromone trap designs for trapping the red bofiworm of cotton, Diparopsis castanea Hmps., including a simple omnidirectional monitoring trap, are described. In trials in Malawi, Diparopsis was more readily trapped on open horizontal trapping surfaces (water or adhesive) than in enclosed types of traps. The presence of a roof above the trapping surface, at spacings of up to 20 cm, significantly reduced catches. White traps, or unpainted traps in the case of vane traps constructed from galvanised metal, caught more moths than traps of other colours. Catches were greatest when monitoring traps in cotton were placed at ground level or at a height of 0·5 m and, when dicastalure was released from polyethylene vials, by employing a trap 60 cm in diameter. Evidence was obtained that competition may exist between female-baited traps spaced up to 73 m apart, although catches in traps baited with dicastalure were not significantly different when traps were 40–60 m apart. The greatest catches of moths in cotton were in traps located in insecticide-sprayed fields, but moths were also trapped in considerable numbers in other crops and to a reduced extent in open areas 4·8 km from the nearest cotton. From about the end of February, catches in maize, groundnut and fallow areas frequently exceeded the catches recorded within cotton fields, which may indicate an increased dispersal flight from cotton by adult moths later in the season. Weekly replacement in monitoring traps of polyethylene vials containing dicastalure produced maximum moth catches, but there was no significant difference in catch between traps in which pheromone was replaced at intervals of 2, 3, 4 or 6 weeks.


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