23 resultados para GUARD HONEYBEES
em Brock University, Canada
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A poem "written at the front in memory of comrades fallen in action while fighting with the First Battalion of the 5th Field Artillery". The final verse of the poem reads, "But the van-guard on before you, who you follow as is meet, They're the lads you left behind you With the poppies and the wheat!"
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Black and white photograph, mounted on board, 18 ½ cm. x 23 ½ cm. of the G.G.B.G. [Governor General’s Body Guard] on horseback at Camp Niagara.
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Black and white photograph, mounted on board, 13 cm x 20 cm of the B Squadron of the G.G.B.G. [Governor General’s Body Guard] at Niagara.
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Chart of bill of timber in bridges, culverts, cattle-guard and roadways, signed by S.D. Woodruff, Oct. 18, 1855.
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This study performed a aecondvy dau analysis of information collected during the Youth Leisure Study (YLS). The purpose of this study was to examine the potential moderating influences of gender and general self-efTicacy on the relationships aoKXig sensation-seeking and various forms of substance use in adolescents. Specifically, the predictive ability of sensation seeking on five adolescents substance use outcomes (alcohol, tobacco, and marijuana use; binge drinking; and number of times drunk) was examined. Moderated hierarchical multiple regression (MHMR) analyses were used to examine the relationships among study variables. The results for this study indicate that the relationships among sensation-seeking and forms of adolescent substance use are more complex than literature suggests. Main effect relationships were found consistently for sensation-seeking and general self-efficacy with each of the outcome variables. Results for gender were not consistent across the substance use outcomes. Gender was a significant predictor for marijuana use only. The moderating effects of general self-efficacy (GSE) on the sensation-seekingsubstance use relationship were inconsistent. While no significant interactions were found for tobacco or alcohol use outcomes, GSE was found to moderate the relationship between sensation-seeking and marijuana use indicating that feelings of high general selfefficacy act as a buffer or guard against marijuana use. A consistent pattern was found among the alcohol use variables (alcohol use. binge drinking, and number of times drunk). Gender was found to moderate each of these variables indicating that higher levels of sensation seeking are more predictive of higher levels of adolescent alcohol use in males only. Implications of this study on the field of education, are discussed further, and suggestions for future research are presented.
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Abstract Many species of social insects have the ability to recognize their nestmates. In bees, sociality is maintained by bees that recognize which individuals should be helped and which should be hanned in order to maximize fitness (either inclusive or individual) (Hamilton 1964; Lin and Michener 1972). Since female bees generally lay eggs in a single nest, it is highly likely that bees found cohabitating in the same nest are siblings. According to the kin selection hypothesis, individuals should cooperate and avoid aggression with same sex nestmates (Hamilton 1964). However, in opposite sex pairs that are likely kin, aggression should increase among nestmates as an expression of inbreeding avoidance (Lihoreau et al. 2007). Female bees often guard nest entrances, recognizing and excluding foreign conspecific females that threaten to steal nest resources (Breed and Page 1991). Conversely, males that aggressively guard territories should avoid aggression towards other males that are likely kin (Shellman-Reeve and Gamboa 1984). In order to test whether Xy/ocopa virginica can distinguish nestmates from non-nestmates, circle tube testing arenas were used. Measures of aggression, cooperation and tolerance were evaluated to detennine the presence of nestmate recognition in this species. The results of this study indicate that male and female X virginica have the ability to distinguish nestmates from non-nestmates. Individuals in same sex pairs demonstrated increased pushing, biting, and C-posturing when faced with non-nestmates. Males in same sex pairs also attempted to pass (unsuccessfully) nOIl-nestmates more often than ncstmates, suggesting that this behaviour may be an cxpression of dominancc in males. Increased cooperation exemplified by successful passes was not observed among nestmates. However, incrcased tolerance in the [onn of head-to-head touching was observed for nestmates in female same sex and opposite sex pairs. These results supported the kin selection hypothesis. Moreover, increased tolerance among opposite sex non-nestmates suggested that X virginica do not demonstrate inbreeding avoidance among nestmates. 3 The second part of this study was conducted to establish the presence and extent of drifting, or travelling to different nests, in a Xylocopa virgillica population. Drifting in flying Hymenoptera is reported to be the result of navigation error and guard bees erroneously admitting novel individuals into the nest (Michener 1966). Since bees in this study were individually marked and captured at nest entrances, the locations where individuals were caught allowed me to determine where and how often bees travelled from nest to nest. Ifbees were captured near their home nests, changing nests may have been deliberate or explained by navigational error. However, ifbees were found in nests further away from their homes, this provides stronger evidence that flying towards a novel nest may have been deliberate. Female bees are often faithful to their own nests (Kasuya 1981) and no drifting was expected in female X virginica because they raise brood and contribute to nest maintenance activities. Contrary to females, males were not expected to remain faithful to a single nest. Results showed that many more females drifted than expected and that they were most often recaptured in a single nest, either their home nest or a novel nest. There were some females that were never caught in the same nest twice. In addition, females drifted to further nests when population density was low (in 2007), suggesting they seek out and claim nesting spaces when they are available. Males, as expected, showed the opposite pattern and most males drifted from nest to nest, never recaptured in the same location. This pattern indicates that males may be nesting wherever space is available, or nesting in benches nearest to their territories. This study reveals that both female and male X virginica are capable of nestmate recognition and use this ability in a dynamic environment, where nest membership is not as stable as once thought.
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A simple High Performance Liquid Chromatograph (HPLC) method has been developed to identify benamyl (methyl 1- (butylcarbamoyl)-2-benzimidazole carbamate) and MBC (methyl 2-benzimidazole carbamat~ residues on apple leaves without cleanup. Sample leaves are freeze dried in a Mason jar and residues are then extracted by tumbling them in chloroform containing 5,000 microgram per milliliter of n-propyl isocyanate (PIC) at 10 C. To the extract, n-butyl isocyanate (BIC) was added at 5,000 microgram per milliliter and 20 microliter of this mixture injected onto the HPLC system. Separation is accomplished by the use of a Brownlee LiChrosorb silica gel column with a guard column and' operated with a mixed mobile phase consisting of chloroform and hexane (4:1) saturated with water. MBC, a degradation product of benomyl is identified if present as methyl l-(npropyl carbamoyl)-2-benzimidazole carbamate (MBC-n-PIC). Both benomyl and MBC-n-PIC can be detected with aKUltraviolet (UV) detector (280nm) at a concentration as low as 0.2 microgram per milliliter in apple leaves. The fate of benomyl on apple foliage after spray application of benomyl (Ben late 50 per cent wettable powder) was investigated by the method thus described. Benomyl quickly dissipated during the first 3-7 days, but the dissipatio'n sltowed down thereafter. In contrast, the concentration of MBC in leaves gradually increased after repeated applications of Benlate.
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Manpower is a basic resource. It is the indispensable means of converting other resources to mankind '.s use and benefit. As a process· of increasing the knowledge, skills, and dexterity of the people of a society, manpower development is the most fundamental means of enabling a nation to acquire the capacities to bring about its desired future state of affairs -- a more mighty and wealthier nation. Singapore's brief nation-building history justifies the emphasis accorded to the importance of good quality human resources and manpower development in economic and socio-political developments. As a tiny island-state with a poor natural resource base, Singapore's long-term survival and development depend ultimately upon the quality and the creative energy of her people. In line with the nation-building goals and strategies of the Republic, as conditioned by her objective setting, Singapore's basic manpower development premise has been one of "quality and not quantity". While implementing the "stop-at-two" family planning and population control programs and the relevant immigration measures to guard against the prospect of a "population explosion", the Government has energetically fostered various educational programs, including vocational training schemes, adult education programs, the youth movement, and the national service scheme to improve the quality of Singaporeans. There is no denying that some of the manpower development measures taken by the Government have imposed sacrifice and hardship on the Singapore citizens. Nevertheless, they are the basic conditions for the island-Republic's long-term survival and development. It is essential iii to note that Singapore's continuing existence and phenomenal-success are largely attributable to the will, capacities and efforts of her leaders and people. In the final analysis, the wealth and the strength of a nation are based upon its ability to conserve, develop and utilize effectively the innate capacities of its people. This is true not only of Singapore but necessarily of other developing nations. It can be safely presumed that since most developing states' concerns about the quality of their human resources and the progress of their nation-building work are inextricably bound to those about the quantity of their population, the "quality and not quantity" motto of Singapore's manpower development programs can also be their guiding principle.
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In the past ten years, many researchers have focussed their attention on parasites regarding the role they may play in causing variations in male secondary sexual traits and subsequent effects on female choice. Male age has also been suggested to be an important factor in female choice if old age reflects superior genes. This study investigated the effects that gregarine gut parasites, age, and diet have on the calling and mating behaviour of the male Texas field cricket, Gryllus integer. Male calling songs were recorded in the laboratory using a Digital Signal Processing Network. The song parameters measured were: pulse rate, pulse width, burst duration, pulses per burst, interburst interval, and percent missing pulses. The effects of parasite load and age on the various calling song parameters was investigated in crickets that were fed two different diets varying in nutritional quality. None of the calling song parameters were affected by either parasite load or age in either diet grou p. Courtship behaviour was ob served and recorded using an Eventlog recorder on an IBM computer in the laboratory. Females mated equally with paras(tized and unparasitized males and with old and young males The total duration and proportion of time spent performing each of 9 courtship displays were recorded for males on each diet. Only one display was affected by parasite load. Highly parasitized males fed the nutritionally inferior diet juddered for a proportionately shorter time than males with low parasite loads. Also, older males performed juddering and shaking antennae proportionally longer and juddering and raising wings for longer durations than younger males. Males that successfully mated were observed for performance of 8 post-copulatory guarding behaviour displays. None of the guarding behaviours were affected by parasite load. However, one display was affected by age, with older males performing guard turning for shorter durations than younger males. Results are discuss,ed in terms of the influence of parasites and age on female choice.
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Survey map of the Second Welland Canal created by the Welland Canal Company showing the canal as it passes through the Village of Thorold. Identified structures associated with the Canal include Locks 23, 24, and 25, a Guard Gate, Lock House Lot, the Little Deep Cut, and the towing path. The surveyors' measurements and notes can be seen in red and black ink and pencil. Local area landmarks are also identified and include streets and roads(ex. Pine Street and Front Street), a basin, a mill race, McPherson and Wier's Grist Mill, Brown and Ross Flouring Mill, R. James Store, J. Brown Cement Mill, W. B. Hendershots Store, Keefers Mill, J. Woodward Grist Mill, Brierly McWhirter and Co. Cotton Mill, E. W. Stephenson Tavern, a factory and a saw mill on W. H. Ward's property, a flouring mill, engine house, a store house, several barns, J. Brown's Wharf, and a number of structures belonging to: Jenkinson, Mrs. McCarty, John Clay, M. McDonnah, Mrs. Donahoc, W. B. Hendershott, Mrs. Pawling, and Christy. Properties and property owners of note are: Lots 8, 9, 16, and 17, W. H. Ward, J. Keefer, G. Keefer Jr., G. Keefer Sr., Dr. Rolls, W. Hendershott, Cleveland, Lucy, and R. Leeper.
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Survey map of the Second Welland Canal created by the Welland Canal Company showing the canal as it passes through the Village of Allanburgh. Identified structures and features associated with the Canal include Lock 26, a Guard Lock, Lock Tender's House, the New Cut, waste wear, and the towing path. Parts of the old canal are indentified and include Old Lock 36 and 37, and the Old Cut. The surveyors' measurements and notes can be seen in red and black ink and pencil. Local area landmarks are also identified and include streets and roads (ex. Holland Road, Centre Street, Falls Street, Canal Street, and Clifton Street), Allanburgh Hotel, Rannies Store, Wright and Duncan Grist Mill, A. Vanderburgh Saw Mill, W. Pennock Shingle Factory, John Harper Tavern, a very delapitated Grist and Saw Mill, store house, a shanty, and a number of other structures - some of which are identified by their owners: A. Vanderburgh, W. Wright, C. Brent, and H. Mussen. Properties and property owners of note are: Lots 118 and 119, Captain Creighton, and William H. Merritt Jr. A number of small properties labeled 1 through 39 are present and of these 6 - 15 are reserved for a Mill Site and are outlined in red. Several other pieces of land are outlined in blue and belong to: W. B. Hendershot, P. Finlay, W. Wright, and L. Leslie. There is also a piece of land reserved for hydraulic purposes.
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Survey map of the Second Welland Canal created by the Welland Canal Company showing the canal as it passes through Port Robinson. Identified structures associated with the Canal include the Guard Lock, Collector Toll Office, towing path, and the New Cut of the canal. The surveyors' measurements and notes can be seen in red and black ink and pencil. Local area landmarks are also identified and include streets and roads (ex. Island Street, Bridge Street, John Street, and Cross Street), bridges (Swing Bridge, and several unnamed bridges), Welland Railroad, Canal to Chippewa Creek (and two old locks and one new lock associated with the canal), Chippewa Creek, Back Water, an unnamed Island, Dry Dock leased to McFarland and Abbey, Abbey's Office, D. McFarland and Co. Saw Mill (Burnt), G. Jordan Tavern, Robert Elliot Store House and Wharf, Isaac Pew's Shop, Colemans Hotel, R. Band and Co. Girst Mill, Donaldson and Co. Grist Mill, H. Marlatt Dwelling House and barn, Henry W. Timms Hotel, Methodist Church, Post Office, Blacksmith Shop, a church, a structure labeled B. Patch, and a number of other structures that are not named. Properties and property owners of note are: Lots 202 and 203, S. Hill, D. McFarland, Church Society, G. Jordan, D. Coleman, John Brown, Rob Coulter, Robert Elliot, Isaac Pew, James McCoppen, William Bell, Charles Stuart, Andrew Elliot, Robert Band, Ed. Feney, John Betty, F. Sharp, William B. Hendershot, A. Brownson, H. Marlatt, J. S. Powell, and the School Trustees. Two reserved properties are labeled in red.The current spelling of Chippewa Creek is Chippawa. Although it not possible to make out the entire name of the H. W. Timms hotel located at Front and Bridge Street on the map itself, it was discovered to belong to Henry W. Timms after consulting the 1851-52 Canada Directory.
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Survey map of the Second Welland Canal created by the Welland Canal Company showing the border area of the townships of Crowland and Humberstone, as well as the Village of Junction. Identified structures associated with the Canal include ditches, guard lock, old canal, new towing path, bridge, feeder to Dunnville, covered drain. Surveyor measurements and notes can be seen in red and black ink and pencil. Local area landmarks include James Turf Tavern and possible marshland. Roads parallel to Canal include western Road Allowance, the new towing road, road to Welland and road to Junction. Roads perpendicular to Canal include Road Allowance between the 5th and 6th Concession. Properties and property owners are noted as Thomas. C. Street, James Tuft, and John Hellems. Lots noted are: Lots Number 26, 27, 6th Concession.
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Survey map of the Second Welland Canal created by the Welland Canal Company showing the areas in and around Port Colborne and Grantham Township. Identified structures associated with the Canal include Basin, Guard Lock, Two Lock Tender Houses, Lock House Lot, Collectors Office House, Towing Path, North and South Back Ditches, and land reserved for future improvemnt of basin. Surveyor measurements and notes can be seen in red and black ink as well as pencil. Local area landmarks dentified include Bridge, Rail Road Swing Bridge, Spoil Bank, Water Tank, Frazer Street Railway Station, Buffalo and Lake Huron Rail Road, Welland Rail Road, and land reserved for "Gardens for Lock Tenders". Local businesses identified include A.K Scholfield Store House Lot and Wharf, two stores and a tavern. Roads running parallel to Canal include King St., "present Travel Road", and the Southern Road Allowance. Roads running perpendicular to Canal include Kent St., Charlotte St., Clarence St., Princess St., Elgin St., George St., Frazer St., Alma St., Eastern Road Allowance. Properties and property owners are also identified and include P. White, John Flynn, George McMicking, Charles Carter, William H. Merritt, A.K. Scholfield, F. Gallgher, Ed McCabe, M. Smith, E. Lawder, J. Hanley, J. Harris, P. Gibbons, M. McGoveran, M. Madden, J. Hardison, T. Nihan, D. Gibbons, J. Cross, William Mellanby, Elis Gordon, Jane McCardy, L.G. Carter, T. Greenwood, C. Armstrong, J. McGillivray, T. Schofield, Mrs. Lanue, D. Mc_______, K. Minor, J. Manly and John McRae.
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Survey map and description of John Hellem's land created by The Welland Canal Company. Included is a written description of the land along with a drawing of the land. Noteable features include; W. Crooks land, concession lines, basin, bridges, guard lock, reservoir, tow path, Lyons Creek. The survey was done on three seperate ocassions by George and Samuel Keefer for Hellems lot #26 in Crowland township. Surveyor notes are seen in pencil and red pen on the map.