ADDITIONAL NOTES ON COLEOPTERA TAKEN IN ESSEX COUNTY AND SOUTHERN ONTARIO, CANADA.

1947 ◽  
Vol 79 (7-8) ◽  
pp. 148-149 ◽  
Author(s):  
S. D. Hicks
Keyword(s):  
Essex County ◽  
Southern Ontario ◽  
The Third

This list follows closely on the third of three previously published articles in the Canadian Entomologist. Mr. C. A. Frost of Framingham, Massachusetts, has checked and supplied me with identifications of all but two of the specimens. His generous interest in determining some of the beetles for which names have been difficult to obtain made this paper possible.

The life histories of north-temperate populations of the crayfish Cambarus robustus and Cambarus bartoni

1985 ◽  
Vol 63 (10) ◽  
pp. 2313-2322 ◽  
Author(s):  
Premysl Hamr ◽  
Michael Berrill
Keyword(s):  
Life History ◽  
Life Histories ◽  
Carapace Length ◽  
Late Summer ◽  
Temperate Climate ◽  
Free Living ◽  
Southern Ontario ◽  
The Third ◽  
Early Fall ◽  
First Time

The life histories of the crayfish Cambarus robustus and Cambarus bartoni were studied in the Kawartha Lakes region of southern Ontario. There were marked differences in their breeding and molting cycles compared with the familiar pattern of the Orconectes species of this region. Egg extrusion occurred later (July in C. robustus, June in C. bartoni), and juveniles therefore did not become free living until late summer or early fall. With little growing time in their first summer, they measured only 5–10 mm in carapace length (CPL) before growth ceased for the winter. At the end of their second summer the still immature crayfish measured 17–26 mm CPL in C. robustus and 13–20 mm CPL in C. bartoni. Maturity was therefore not attained until the end of the third summer, when most C. robustus matured at 34–45 mm CPL and C. bartoni at 25–30 mm CPL. The majority of individuals apparently reproduced for the first time during their fourth summer; a few apparently survived into another summer, reaching carapace lengths greater than 50 mm in C. robustus and 30 mm in C. bartoni. In males of both species, form 1 and form 2 occur throughout the summer. Although lacking the synchrony of Orconectes species, breeding and molting activities are still confined to the period between April and October. The timing of the life-history events observed in these two Cambarus species may be adaptations to seasonal stresses of the swift water environments that these species inhabit as well as to the relative harshness of the northern temperate climate.

The salivary gland chromosomes of Prosimulium multidentatum Twinn and three forms included in Prosimulium magnum (Dyar and Shannon) (Diptera:Simuliidae)

1969 ◽  
Vol 47 (5) ◽  
pp. 943-949 ◽  
Author(s):  
P. O. Ottonen ◽  
Ramachandran Nambiar
Keyword(s):  
New York ◽  
Salivary Gland ◽  
Great Lakes ◽  
Sex Chromosomes ◽  
Species Complex ◽  
New York State ◽  
Great Lakes Region ◽  
Southern Ontario ◽  
York State ◽  
The Third

Further study of the morphology of salivary gland chromosome complements within the range described for Prosimulium magnum showed the species to consist of three cytologically distinct populations. The first two forms are without sex chromosomes, (1) a form analogous to the species chromosomal standard, P. magnum, (2) a form which is differentiated by the fixed inversion IIS-25, but (3) the third form has cytological XcYc sex determination. In the Great Lakes region these three forms of the P. magnum complex and P. multidentatum are sympatric in three separate areas, Michigan, Southern Ontario, and Western New York State. Natural hybrids between the forms have so far been obtained only infrequently, and the known hybrids are described. Some chromosomal aspects of speciation are discussed in relation to the present observations on the species complex.

The cytogeography of Aster lanceolatus. III. Cytoecology in southern Ontario

1983 ◽  
Vol 61 (7) ◽  
pp. 1879-1886 ◽  
Author(s):  
J. G. Chmielewski ◽  
J. C. Semple
Keyword(s):  
Chromosome Number ◽  
Water Content ◽  
Community Type ◽  
Essex County ◽  
Southern Ontario ◽  
Historical Factors ◽  
Kent County ◽  
Type Water

Aster lanceolatus Willd. is represented by five polyploid levels in southern Ontario: tetraploid (2n = 32), pentaploid (2n = 40), hexaploid(2n = 48), heptaploid (2n = 56), andoctoploid(2n = 64). Tetraploids were absent from the Niagara Peninsula in the southeast and Essex County, Kent County, Lambton County, and Elgin County in the southwest, whereas the hexaploids were ubiquitous. Correlations were found between chromosome number and habitat (community type), water content of the soil, physiographic region, and grouped physiographic region. These correlations notwithstanding, the distribution of the two predominant cytotypes in southern Ontario may also be related to historical factors.

scholarly journals BROWN HEART IN RUTABAGAS GROWN ON SOUTHERN ONTARIO SOILS

1974 ◽  
Vol 54 (2) ◽  
pp. 171-178 ◽  
Author(s):  
E. G. BEAUCHAMP ◽  
I. HUSSAIN
Keyword(s):  
Field Experiments ◽  
Water Soluble ◽  
Hot Water ◽  
Clear Relationship ◽  
Southern Ontario ◽  
The Third ◽  
K Concentration ◽  
Fourth Experiment ◽  
Root Tissues ◽  
Heart Condition

Brown heart sometimes occurs in rutabagas (Brassica napobrassica Mill.) grown on some southern Ontario soils even though a recommended quantity of B fertilizer has been applied. Fourteen field experiments were conducted on growers' fields over a 4-yr period to determine the cause of this phenomenon. Brown heart occurred when the hot-water-soluble B content of the soil decreased below approximately 1.3 ppm although there were a few exceptions. An application of 4.5 kg B/ha as borax did not completely overcome the brown-heart condition in a majority of the experiments. The B concentration in the third or fourth leaf from the centre of the whorl was not related to brown-heart incidence. However, it was found that a B concentration of less than 18 ppm in the roots was generally associated with brown-heart incidence. Although there was no clear relationship between the Ca/B ratio in the leaf blades and brown-heart incidence, there was an increase in brown-heart incidence as the Ca/B ratio in the roots increased above 170. In three experiments, an application of 224 kg Na/ha as NaCl significantly increased brown-heart incidence, whereas in a fourth experiment there was a significant decrease. There was some evidence that the Na may slightly decrease the B concentration. Also the Ca concentration increased as the Na concentration increased in rutabaga tissues thereby affecting the Ca/B ratio and possibly brown-heart incidence. There was also evidence that, in the root tissues, the Ca/B ratio was inversely related to the K concentration. It was concluded that the effectiveness of B in decreasing brown-heart incidence was related to the Ca concentration in rutabaga plants.

ADDITIONAL NOTES ON COLEOPTERA TAKEN IN ESSEX COUNTY AND SOUTHERN ONTARIO

1947 ◽  
Vol 79 (6) ◽  
pp. 117-119 ◽  
Author(s):  
S. D. Hicks
Keyword(s):  
Essex County ◽  
Southern Ontario

The following list of specimens is supplementary to two previously published articles (1944, Canad. Ent. 76:163 and 1945, Canad. Ent. 77:214) on Essex County material. Appended to the list are miscellaneous records of 17 species captured in Ontario locations other than Essex County. These have been added to this paper since they are thought to be of noteworthy interest. The species in each part follow as closely as possible C.W. Leng's Catalogue of the Coleoptera of America north of Mexico.

THE ESTABLISHMENT OF LOPHYROPLECTUS LUTEATOR (HYMENOPTERA: ICHNEUMONIDAE) ON NEODIPRION SERTIFER (HYMENOPTERA: DIPRIONIDAE) IN ONTARIO

1968 ◽  
Vol 100 (10) ◽  
pp. 1095-1099 ◽  
Author(s):  
K. J. Griffiths ◽  
L. A. Lyons
Keyword(s):  
Neodiprion Sertifer ◽  
Southern Ontario ◽  
The Third ◽  
Made In

AbstractLophyroplectus luteator (Thunb.), a European ichneumonid, was liberated in three Neodiprion sertifer-infested plantations in southern Ontario. Following one introduction in 1962, the parasite has survived 4 years and has spread at least 1.4 mites. Six per cent of the hosts collected within the plantation in 1966 produced adult parasites. Another smaller introduction in 1962 was unsuccessful. Following the third introduction, made in 1964, the parasite has survived 2 years and the attack level is now nearly 9 per cent.

Vascular epiphytes in the southern deciduous forests of Ontario

1975 ◽  
Vol 53 (10) ◽  
pp. 988-1015 ◽  
Author(s):  
Paul F. Maycock
Keyword(s):  
Temperate Forest ◽  
The United States ◽  
Deciduous Forests ◽  
Northern Europe ◽  
Essex County ◽  
Southern Ontario ◽  
Vascular Epiphytes ◽  
Evergreen Forests ◽  
The World ◽  
Point Pelee

The occurrence of vascular epiphytes in the deciduous and deciduous–evergreen forests of southern Ontario, particularly in the southern deciduous forests of Point Pelee, Essex County, is presented. The general and specific ecology of vascular epiphytes is examined and compared in detail with that of such plants in other temperate areas of the world, particularly the United States and northern Europe. Twelve different species of plants have been found growing in 21 different epiphytic situations in the Pelee forests. Throughout the southern forests of Ontario a total of 25 plants has been recorded in a total of 34 arboreal habitats. In all, just 13 species of trees served as hosts for these vascular epiphytes and these are predominantly deciduous. Red oak and hackberry account for 50% of the epiphytic sites provided. General patterns associated with vascular epiphytism in temperate forest localities in North America and Europe are discussed.

REPRODUCTION IN THE EUROPEAN HARE IN SOUTHERN ONTARIO

1959 ◽  
Vol 37 (5) ◽  
pp. 627-631 ◽  
Author(s):  
J. K. Reynolds ◽  
R. H. Stinson
Keyword(s):  
Reproductive Biology ◽  
Breeding Season ◽  
Litter Size ◽  
Lepus Europaeus ◽  
European Hare ◽  
Southern Ontario ◽  
Adult Weight ◽  
The Third ◽  
In Captivity

Certain aspects of the reproductive biology and growth of the European hare, Lepus europaeus hybridus Desmarest, were studied in 1949–52 in southwestern Ontario. The breeding season began in January and declined in August, reaching its height between the second week of February and the third week of June when all females examined were pregnant. The litter size varied from one to four; an average of 1.6 foetuses occurred in the early litters (January–March) and 3.8 in later litters (April–June). One young raised in captivity grew to adult weight (4100 g) in 6 months.

scholarly journals Control of Aethina tumida (Coleoptera: Nitidulidae) using in-hive traps

2014 ◽  
Vol 147 (1) ◽  
pp. 97-108 ◽  
Author(s):  
Martine Bernier ◽  
Valérie Fournier ◽  
Les Eccles ◽  
Pierre Giovenazzo
Keyword(s):  
Weight Gain ◽  
Honey Bees ◽  
Late Summer ◽  
Mineral Oil ◽  
Aethina Tumida ◽  
Small Hive Beetle ◽  
Brood Chamber ◽  
Essex County ◽  
Southern Ontario ◽  
Apple Cider

AbstractThe small hive beetle (SHB), Aethina tumida Murray (Coleoptera: Nitidulidae), is a non-native pest of honey bees (Apis mellifera Linnaeus (Hymenoptera: Apidae)) newly introduced to Canada. The effectiveness of three in-hive traps was tested in springtime in West-Montérégie (southern Québec, Canada) and in late summer in Essex County (southern Ontario, Canada): AJ’s Beetle Eater™ (AJ’s Beetle Eater), Beetle Barn™ (Rossmann Apiaries), and Hood™ trap (Brushy Mountain Bee Farm). Traps were placed in the brood chamber of 12 colonies in West-Montérégie, and in 48 colonies in the top honey super in Essex County. In-hive traps were effective in reducing SHB populations without compromising the bee population or colony weight gain. In West-Montérégie, the Beetle Barn™ was the most effective trap during the first week, when SHB populations were high. It was less effective when honey bees sealed trap openings with propolis. In Essex County, the AJ’s Beetle Eater™ was the most effective throughout the trial. There was no difference in efficacy between the various solutions used in the Hood™ trap (mineral oil versus mineral oil and apple cider vinegar).

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