scholarly journals Insect survey in the Vila Velha State Park, Brazil, in areas subject to fire action

2020 ◽  
pp. 35
Author(s):  
Isabela Mendes Barzon ◽  
Alexandre França Tetto ◽  
Nilton José Sousa ◽  
Bruna Kovalsyki ◽  
João Francisco Labres dos Santos ◽  
...  
Keyword(s):  
Insect Survey

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Monitor surveying for migrant insect pests

1973 ◽  
Vol 7 (3) ◽  
pp. 109-116 ◽  
Author(s):  
L R Taylor
Keyword(s):  
Population Dynamics ◽  
Insect Pests ◽  
Spatial Dimension ◽  
Effective Control ◽  
Crop Pests ◽  
Insect Populations ◽  
Insect Survey ◽  
Local Assessment

Effective control of erratic crop pests requires accurate timing of treatments, and the dynamics of insect populations are inadequately understood. Aerial monitoring for many species simultaneously, instead of sampling each crop separately, enables the Rothamsted Insect Survey to provide accurate, quantitative, synoptic information on current levels of pest populations; this gives continuity to local assessment for advisory purposes, and adds a spatial dimension to population dynamics.

Estimation of Parasitism of Larch Sawfly Cocoons by Bessa harveyi Tnsd. in Survey Collections

1959 ◽  
Vol 91 (8) ◽  
pp. 496-500 ◽  
Author(s):  
W. G. H. Ives ◽  
R. M. Prentice
Keyword(s):  
Forest Insect ◽  
Small Areas ◽  
Pristiphora Erichsonii ◽  
Larch Sawfly ◽  
Insect Survey ◽  
Forest Biology ◽  
Biology Laboratory ◽  
Total Parasitism

The Forest Insect Survey at the Forest Biology Laboratory, Winnipeg, has been compiling records for a number of years on the percentage of cocoons of the larch sawfly, Pristiphora erichsonii (Htg.), parasitized by the tachinid Bessa harveyi Tnsd. Sawfly cocoons were collected each fall from the soil in infested stands, and those containing living larvae were dissected to determine the percentage of parasitism by B. harveyi. These estimates have been used to provide an index of parasitism (Lejeune and Hildahl, 1954), but are of limited value for a number of reasons: (1) estimates can be expressed only as percentage of sound cocoons parasitized; (2) total parasitism cannot be estimated because a portion of the parasites emerge from the cocoons before collection; and (3) estimates of parasitism may not be representative of the stand because there is a tendency to collect cocoons where they are easiest to find; hence all the cocoons in a collection may be from one or two small areas. If the proportion of cocoons containing B. harveyi varies within a stand such collections may give unreliable estimates of parasitism.

The Life History and Dispersal of the Bruce Spanworm, Operophtera bruceata (Hulst), (Lepidoptera: Geometridae)

1962 ◽  
Vol 94 (10) ◽  
pp. 1103-1107 ◽  
Author(s):  
C. E. Brown
Keyword(s):  
United States ◽  
Life History ◽  
The United States ◽  
American Continent ◽  
Forest Insect ◽  
North American Continent ◽  
The Third ◽  
The North ◽  
Insect Survey ◽  
Bruce Spanworm

The Bruce spanworrn, Operophtera bruceata (Hulst), is most common in the mid latitudes of the North American Continent; in Canada it occurs from Newfoundland to the interior of British Columbia (Prentice, In Press) and has been reported from Vermont and Wisconsin in the United States (Craighead, 1950.) Three outbreaks of this insect have been recorded in Alberta. The first occurred in 1903 (de Gryse, 1925) and was apparently of short duration. The second reported by Wolley Dod (1913) occurred in 1913 and denuded hundreds of acres of aspen poplar. Heavy defoliation in the third outbreak became evident in 1957 (Brown, 1957) but an examination of Forest Insect Survey records revealed that population buildup began about 1951. The outbreak continued to expand until 1958 and began to decline in 1959; by 1961 populations were again low except for one or two isolated areas where moderate to low populations persisted. At the peak of the outbreak in 1958 approximately 50,000 square miies were moderately or heavily infested and many more lightly infested.

What is an Arctic Insect?

1962 ◽  
Vol 94 (2) ◽  
pp. 143-162 ◽  
Author(s):  
J. A. Downes
Keyword(s):  
International Congress ◽  
Medical Entomology ◽  
Extensive Program ◽  
Insect Survey ◽  
Taxonomic Studies ◽  
And Control ◽  
Great Mass

Entomologists in Canada, especially in recent years, have made an extensive contribution to the study of northern insects. Some 70 field parties of the Northern Insect Survey have worked in almost as many stations in arctic and subarctic Canada and have gathered a great mass of specimens for the Canadian National Collection (Freeman, 1958, 1959). Many taxonomic studies of this material have been published, though almost of necessity they deal with only a small fraction of what is available. Some distinguished studies of the geography of northern insects have likewise been based on these collections, and figured prominently in the symposium on this subject at the International Congress of Entomology at Montreal in 1956. There has also been an extensive program of studies on the ecology and control of the northern biting flies, carried out by the staff of the former Veterinary and Medical Entomology Unit and their collaborators from the Universities. This program also has resulted in publications too numerous for individual mention (Twinn, 1950, 1952, 1955).

Notes on winter flies Trichoceridae (Diptera) of Mongolia with description of new species ANDRIUS PETRAŠIŪNAS & SIGITAS PODĖNAS (Lithuania)

Zootaxa ◽  
2011 ◽  
Vol 3031 (1) ◽  
pp. 61 ◽  
Author(s):  
ANDRIUS PETRAŠIŪNAS ◽  
SIGITAS PODĖNAS
Keyword(s):  
New Species ◽  
Aquatic Insect ◽  
North Central ◽  
Central Mongolia ◽  
The Family ◽  
Insect Survey ◽  
A New Species

The family of winter flies Trichoceridae is newly recorded for Mongolia. Four species, Trichocera (Metatrichocera) gigantea (Dahl), T. (M.) mackenziei (Dahl), T. (Saltrichocera) regelationis (Linnaeus) and T. (Trichocera) hiemalis (De Geer) are first recorded in Mongolia from sampling during 1996, 2003–2006, 2008. A new species, Trichocera (Saltrichocera) chuluuta, is described from specimens collected during the fieldwork of the Mongolian Aquatic Insect Survey Project in western and north-central Mongolia.

Holarctic Elements Among the Ichneumoninae of Canada

1956 ◽  
Vol 88 (11) ◽  
pp. 647-652 ◽  
Author(s):  
Gerd H. Heinrich
Keyword(s):  
Department Of Agriculture ◽  
Canada Department ◽  
Defence Research ◽  
Insect Survey ◽  
Department Of National Defence ◽  
National Defence

The fallowing records represent a supplement to my former publication “Holarctic Elements among the Ichneumoninae of Maine” (Jour. Wash. Acad. Science 43. May, 1953, p. 148-50). They are based mainly on material obtained by the Northern Insect Survey, which is a co-operative project of the Canada Department of Agriculture and the Defence Research Board, Canada Department of National Defence.

BESSA SELECTA (MEIGEN) (DIPTERA: TACHINIDAE) AS A PARASITE OF GILPINIA HERCYNIAE (HARTIG) (HYMENOPTERA: DIPRIONIDAE)

1947 ◽  
Vol 79 (5) ◽  
pp. 84-104 ◽  
Author(s):  
L. S. Hawboldt
Keyword(s):  
High Mortality ◽  
Great Difficulty ◽  
Control Factor ◽  
Forest Insect ◽  
Larch Sawfly ◽  
Insect Survey

This project arose out of studies of the European spruce sawfly, Gilpinia hercyniae (Htg.), in connection with the Canadian Forest Insect Survey at the Dominion Entomological Laboratories, Fredericton, N.B. Bessa selecta (Mg.) had been observed as a parasite of the larch sawfly, Pristiphora erichsoni (Htg.), but particular interest was aroused in it as a parasite occurring on the European spruce sawfly. The latter host was frequently found to bear the eggs and integumental funnels of B. selecta. The object was to study its biology and effectivness as a possible control factor of the spruce sawfly. However, great difficulty was experienced in rearing the host due to high mortality caused by disease. Hence the original aims were not attained to the entire satisfaction of the author.

Artificially Disseminated Virus as a Factor Controlling the European Spruce Sawfly, Diprion hercyniae (Htg.) in the Absence of Introduced Parasites

1961 ◽  
Vol 93 (3) ◽  
pp. 228-238 ◽  
Author(s):  
F. T. Bird ◽  
J. M. Burk
Keyword(s):  
Virus Disease ◽  
Population Trends ◽  
Long Term Effects ◽  
Eastern Canada ◽  
Forest Insect ◽  
Insect Survey ◽  
Forest Biology ◽  
Biology Laboratory ◽  
Disease Free

An outbreak of the European spruce sawfly, Diprion hercyniae (Htg.), occurring in Eastern Canada between 1930 and 1942, was controlled by a virus disease (Balch and Bird, 1944). The sawfly has been kept at a low level by the disease and by parasitic insects introduced from Europe (Bird and Elgee, 1957).An infestation of the sawfly was discovered in 1947 near Sault Ste. Marie, Ontario, by the Forest Insect Survey Section of the Forest Biology Laboratory at Sault Ste. Marie. This infestation was about 100 miles beyond the previously known western distribution of the insect. Intensive larval sampling in 1949 showed that it was free from virus and practically free from introduced parasites. Thus, an excellent opportunity was provided to introduce the virus into a disease-free population, to study its establishment and spread, and to compare the long term effects of virus alone on population trends with the effects that virus plus introduced parasites were shown to have on population trends in New Brunswick (Bird and Elgee, 1957). The virus was introduced into the infestation in 1950 and studies were carried out each year from 1950 to 1959.

A NEW SPECIES OF BRACHYCYRTUS FROM BRITISH COLUMBIA (HYMEN.; ICHNEUMONIDAE)

1940 ◽  
Vol 72 (4) ◽  
pp. 85-86 ◽  
Author(s):  
G. Stuart Walley
Keyword(s):  
British Columbia ◽  
New Species ◽  
Forest Service ◽  
Adult Parasite ◽  
Forest Insect ◽  
South Eastern ◽  
Engelmann Spruce ◽  
Insect Survey ◽  
A New Species

It was with some surprise that the writer encountered a representative of this rare and, until recently, little known genus, from a locality in south-eastern British Columbia. The specimen in question is a female reared at Ottawa, by officers of the Forest Insect Survey of the Division of Entomology, Irom the cocoon of a Chrysopid beaten from Engelmann spruce, Aug. 26, 1938, by Mr. D. N. Ross of the British Columbia Forest Service, in the vicinity of Bayne's Lake, B. C. The adult parasite emerged in the laboratory, Feb. 20, 1939.

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