Zobrazeno 1 - 10
of 12
pro vyhledávání: '"P. W. Riegert"'
Autor:
Noreen Singh, P. W. Riegert
Publikováno v:
Canadian Journal of Botany. 60:2461-2468
A descriptive key and plates of drawings showing epidermal structures are presented. Their use will permit the identification of 53 species of forbs and grasses that may comprise the diet of herbivores, such as grasshoppers, when ingested as leaf fra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88bc4bc724299e437f82dc9f60ef5690
https://doi.org/10.1139/b82-298
https://doi.org/10.1139/b82-298
Publikováno v:
Canadian Journal of Zoology. 60:1236-1256
The gross anatomy of all the leg muscles of the American coot (Fulica americana Gmelin) is described. These findings differ on a number of points from earlier investigations of gruiform anatomy: the presence of M. iliotrochantericus medius, the prese
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1519d69b210eed27479c86ca578cdb70
https://doi.org/10.1139/z82-168
https://doi.org/10.1139/z82-168
Autor:
P. W. Riegert
Publikováno v:
The Canadian Entomologist. 99:952-971
A brief historical review of the occurrence of the clear-winged grasshopper, Camnula pellucida (Scudd.), is presented as well as recent information pertaining to the biology of its various life stages. In the egg stage, diapause is more successfully
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dae4e1c12f2dc870bc74d9450eced37
https://doi.org/10.4039/ent99952-9
https://doi.org/10.4039/ent99952-9
Publikováno v:
The Canadian Entomologist. 97:508-514
Observations on the occurrence of Camnula pellucida (Scudder) on native grasslands in Saskatchewan indicated that such areas did not support large populations of this species except on the margins where these were adjacent to cereal crops. This suppo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a478f2a409cff471c372d4bf3bec2fd
https://doi.org/10.4039/ent97508-5
https://doi.org/10.4039/ent97508-5
Autor:
R. Pickford, P. W. Riegert
Publikováno v:
The Canadian Entomologist. 96:1158-1166
A widespread epizootic of the fungous disease caused by Entomophthora grylli Fres. occurred among grasshoppers in Saskatchewan in 1963. Camnula pellucida (Scudder), in particular, suffered high mortality and was nearly wiped out in those areas of cen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41b0fdb33c579920cb228d7d3945529b
https://doi.org/10.4039/ent961158-9
https://doi.org/10.4039/ent961158-9
Autor:
P. W. Riegert
Publikováno v:
The Canadian Entomologist. 97:1046-1051
Adults of Melanoplus bilituratus (Walker) were reared in the laboratory as groups of pairs, as groups in association with mature and immature males, as single pairs, and as groups of unmated females. Females of grouped pairs produced a larger number
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04a6343d994b4dcf47efcaa151f71851
https://doi.org/10.4039/ent971046-10
https://doi.org/10.4039/ent971046-10
Autor:
C. G. Bailey, P. W. Riegert
Publikováno v:
Canadian Journal of Zoology. 51:91-100
The bioenergetics of annual populations of the dusky grasshopper, Encoptolophus sordidus costalis, on a natural grassland site were examined. Peak dry weight biomass of these insects reached 1.7 kg/ha (1.85 lb/at). Oxygen consumption ranged from 2.76
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7d6299334ff3b780cab8fe11b27e4a7
https://doi.org/10.1139/z73-014
https://doi.org/10.1139/z73-014
Autor:
P. W. Riegert
Publikováno v:
The Canadian Entomologist. 99:1000-1003
High winter mortality of eggs of three species of grasshopper occurred at various locations in Saskatchewan. Climatological factors associated with these mortalities indicated that egg survival during the winter is dependent upon snow cover as well a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::715a494c9d223054bdc5e558a71f066e
https://doi.org/10.4039/ent991000-9
https://doi.org/10.4039/ent991000-9
Publikováno v:
The Canadian Entomologist. 86:223-232
The main objective of the present work was to investigate the ability of grasshopper nymphs to escape an environment devoid of food plants and to reach a suitable food supply, either as a result of random dispersal or by marching. The immediate inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3e97e924a55ad1bb4827de7ca1cf58c
https://doi.org/10.4039/ent86223-5
https://doi.org/10.4039/ent86223-5
Publikováno v:
The Canadian Entomologist. 86:201-203
With the increased availability of radioisotopes and their application to the study of insect behaviour and dispersal, the possibility of using a radio-active tag on grasshoppers was investigated. Preliminary studies on the distribution of radio-acti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fcfdf482c6adec9de2605788819bc67
https://doi.org/10.4039/ent86201-5
https://doi.org/10.4039/ent86201-5