Studies on Flight Range and Dispersal Habits of Aedes flavescens (Müller) (Diptera: Culicidae) Tagged with Radio-phosphorus

1955 ◽  
Vol 87 (9) ◽  
pp. 376-379 ◽  
Author(s):  
J. A. Shemanchuk ◽  
F. J. H. Fredeen ◽  
A. M. Kristjanson

In Western Canada, Aedes flavescens (Müller) is found mainly on the prairie, where it is one of the commonest of the blood-sucking pests of livestock and man. It has also been taken as far north as Churchill, Man., and Alaska (Rempel, 1950). Information on its flight range is useful in planning control programs. Field and laboratory studies on the flight range of this species, with radio-active phosphorous for tagging, were conducted at Saskatoon and Indi, Sask., in 1952. The project area is almost flat in the north and west and rolling in the south and east; the Blackstrap Valley separates the two topographical areas.

1955 ◽  
Vol 11 (3) ◽  
pp. 429-447
Author(s):  
Joaquín Meade

The huasteca region in northeastern Mexico covers sections of the six states of Tamaulipas, Veracruz, San Luis Potosí, Hidalgo, Puebla, and Querétaro. Its boundaries are approximately the following: to the north the river Soto la Marina, known in the sixteenth century as the Rio de las Palmas; to the south the Rio Cazones; to the east the Gulf of Mexico and to the west the mountainous section of the eastern Sierra Madre.The Christian conversion of the Huasteca began, no doubt, in 1518 with the expedition of Juan de Grijalva, who actually sailed as far north as Tuxpan and Tamiahua in the Huastec region of the state of Veracruz. John Diaz, a priest, accompanied this expedition. In 1519 Francisco de Garay, then in Jamaica, sent Alonso Alvarez de Pineda to Tampico and the Río Panuco, where he stayed some time and made contact with the Huastecs who belong to the great Maya family.


2017 ◽  
Vol 16 (4) ◽  
pp. 364-368 ◽  
Author(s):  
Gwendolyn Y. Purifoye

Four large, and often overflowing, dumpsters are situated at one of the more than dozen bus stops at the Chicago Transit Authority's (CTA) Red Line 95th Street/Dan Ryan train station. This station is on the city's far south side and the ridership on the buses that board and disembark there and the train is predominantly minority. On a warm or hot day, the smell of bus engines and dumpster contents fill the waiting areas. One 28–year–old Black male passenger (BMP) noted, as he stood at one of the nearly one dozen (no seating available) bus stops at the station, “In the summer it's really horrible because of the smells, flies, and bees.” He also added that as far as he could remember “they've [the bus stop dumpsters] been here my whole life” (June 2012). His experience at the south end of this train line, which also has a majority minority ridership, is starkly different from the waiting experiences on the far north end of the same line, Howard Street, where the ridership is diverse (with a large white ridership). The north end station is surrounded by shops and restaurants, more open waiting spaces, and places to sit to wait for buses that travel through the adjoining bus depot. There are no bus stop benches at the south end station, even though there are over a dozen buses that use that station's depot.


Author(s):  
Emmanuel Ikechi Onah

Nigeria is a sovereign country located in the area of West Africa bordering on the Gulf of Guinea. The country has a total area of 923, 769sq km (a little more than twice the size of California). Its physical size makes Nigeria the third largest country in Sub-Saharan Africa. The country’s terrain consists of the lowlands in the South with mountainous formations in the South-east, which merge into the hills and plateaus of the Central belt and the plains of the far north. The climate varies from the largely equatorial climates in the South to the tropical climates in the centre and the North (Ekoko, 1990). It is also the most populous country in Africa, with a population of about 160 million (2006 census), and a population growth rate estimate of 3%. The country is bordered on the west by the Republic of Benin and the Republic of Cameroon, on the south by the Atlantic Ocean, and on the north by Niger Republic and the Republic of Chad. Nigeria is endowed with numerous natural resources, the most important being petroleum and natural gas, found in the Niger Delta areas of the country. Coal, iron ore, tin, limestone, zinc, lead, gold, precious stones, and uranium are found across the country.There are many ethnic groups, roughly categorized into the majority ethnic groups and the minority ethnic groups. The majority groups are namely, the Hausa-Fulani of the North, the Yoruba of the South-west, and the Igbo of the South-east. The hundreds of so-called minority ethnic groups include the Igala, Tiv, Idoma, Junkun, Angas, Birom and others in the Central-belt, the Edo, Urhobo and Itshekiri in the Mid-west, the Ijaw, Efik, Ibibio and Ogoni in the South-south, and the Kanuri, Gwari and Kataf of the far-North. On the whole, it is estimated that the country has more than 250 ethnic groups (Osaghae, 1998). English is the official language in Nigeria, by virtue of the country being a former colony of Britain. Christianity, Islam and traditional beliefs are the religions in the country, and although there is no state religion, the various tiers of government in the country are often involved in aspects of some of these religions, including state sponsorships of annual Muslim and Christian pilgrimages to the Holy lands.    


1956 ◽  
Vol 21 (3) ◽  
pp. 301-303 ◽  
Author(s):  
James H. Howard

Shell gorgets in the shape of a human face are well-known artifacts of the North American archaeological complex often termed the “Southern Cult.” These gorgets were usually made of a pear-shaped section of the outer whorl of the shell of the whelk (Busycon perversum). Though the whelk is found only on the South Atlantic and Gulf Coasts of the United States, gorgets of this material have been found as far north as Manitoba and Saskatchewan (Montgomery 1908).Recently the writer, in reading ethnographic accounts of the Kansa, was surprised to find descriptions, together with one native drawing, of what are very likely Southern Cult gorgets, used in Kansa war-bundle ceremonies as late as 1883. Since no one, so far as is known, has pointed out the persistence of th's archaeological trait in historic Kansa culture, a few notes are perhaps appropriate.The earlier of the 2 accounts, and one which is liable to be overlooked by most anthropologists, is J. Owen Dorsey's “Mourning and War Customs of the Kansas” (1885).


1993 ◽  
Vol 125 (2) ◽  
pp. 317-328 ◽  
Author(s):  
P.G. Fields ◽  
J. Van Loon ◽  
M.G. Dolinski ◽  
J.L. Harris ◽  
W.E. Burkholder

AbstractRhyzopertha dominica (F.) (lesser grain borer, Coleoptera: Bostrichidae) is a major pest of stored grain in the United States, Australia, and most other warm regions of the world. It has rarely been detected in Canadian grain, until recently. To determine the distribution of/R. dominica in western Canada, Lindgren multiple-funnel traps baited with R. dominica aggregation pheromones were placed near grain elevators, feed mills, and farms. Rhyzopertha dominica was found flying outside grain-handling facilities in all Prairie Provinces in 1990 and 1991, with thousands collected in Manitoba, hundreds in Alberta, and less than 100 in Saskatchewan. A few R. dominica were caught in Vancouver and Thunder Bay. None were caught in the traps placed beside two grain elevators in southern Ontario. In Alberta and Saskatchewan, the locations with R. dominica were mainly in the south. In Manitoba, the total number of R. dominica caught at each location was higher in the south than in the north. Rhyzopertha dominica were caught as early as 15 May and as late as 18 September, with the peak numbers for a given location occurring between July and September. No difference in the total number of R. dominica caught per year was found among farms, feed mills, or grain elevators in 1990 or 1991. Sampling of stored grain on three farms showed that two of the eight bins sampled had R. dominica. The possible origins of the R. dominica (importation of infested grain, wind-borne migration from the United States, or an established Canadian population) are discussed.


1911 ◽  
Vol 2 (3) ◽  
pp. 273-276 ◽  
Author(s):  
T. F. G. Mayer

The Oshogbo and Ilesha districts of Southern Nigeria are contiguous and are situated in the north-east corner of the Western Province. They are bounded on the north and east by Northern Nigeria, on the west by the Oyo district, and on the south by the Ibadan and Ondo districts of the Western Province, and by a small part of the Central Province.


2003 ◽  
Vol 10 (2) ◽  
pp. 99-108
Author(s):  
Jinx Miles

Paronella Park, near Innisfail in far north Queensland, is a 1930s pleasure garden of around five hectares on the old route of the Bruce Highway between Townsville and Cairns. The focus of the garden is the Mena Creek waterfalls close to the road crossing of Mena Creek. The garden stretches from the road eastwards along the north bank of the creek. The park is set in the sugarcane fields surrounding the South Johnstone Mill but the tropical planting within the garden has developed to a degree where this landscape setting in uniform cane fields is hard to believe.


1980 ◽  
Vol 112 (6) ◽  
pp. 555-558 ◽  
Author(s):  
P. Pankiw ◽  
J. A. C. Lieverse ◽  
B. Siemens

AbstractStudies in Western Canada from 1974 to 1977 on variations in time and duration of the emergence period after diapause of leafcutter bees, Megachile rotundata (Fabricius), reared at latitudes ranging from 49°N to 58°N showed that bees reared at northern latitudes emerged sooner and the duration of the emergence period was shorter than for bees from the southern latitude. When southern bees were reared in the north, their emergence pattern was similar to the northern strain. However, the change of time to emerge and duration of emergence period of northern strains reared in the south was less pronounced. Number of days to emerge varied inversely with length of cold treatment at 4 °C with greater variance in southern strains.


Author(s):  
B. G. J. Upton

ABSTRACTIn the early Carboniferous, the portion of continental crust that now constitutes Scotland lay within the hinterland of a large continent that extended westwards to what is now the western parts of North America, eastwards to what is now the Urals and northwards towards what is now Arctic Canada, Greenland, Scandinavia and Russia. Open ocean probably lay at between 600 and 1000 km to the south. Whereas mountainous terrane lay to the north of the Highland Boundary fault, the Scottish Midland Valley, like the Northumberland Trough further south, was a region of low relief subject to periodic marine incursions.A period of block faulting and concomitant basaltic volcanism commenced at the beginning of the Carboniferous at c. 350 Ma. This had manifestations in various regions of the British Isles from the south-west of England to the west of Ireland and as far north as the Midland Valley (Francis 1978, 1991; Upton 1982; Cameron and Stephenson 1985).


2000 ◽  
Vol 179 ◽  
pp. 201-204
Author(s):  
Vojtech Rušin ◽  
Milan Minarovjech ◽  
Milan Rybanský

AbstractLong-term cyclic variations in the distribution of prominences and intensities of green (530.3 nm) and red (637.4 nm) coronal emission lines over solar cycles 18–23 are presented. Polar prominence branches will reach the poles at different epochs in cycle 23: the north branch at the beginning in 2002 and the south branch a year later (2003), respectively. The local maxima of intensities in the green line show both poleward- and equatorward-migrating branches. The poleward branches will reach the poles around cycle maxima like prominences, while the equatorward branches show a duration of 18 years and will end in cycle minima (2007). The red corona shows mostly equatorward branches. The possibility that these branches begin to develop at high latitudes in the preceding cycles cannot be excluded.


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