Canadian Entomologist最新文献_第7页

Evidence for (E)-Pityol as an Aggregation Pheromone of Pityophthorus pubescens (Coleoptera: Curculionidae: Scolytinae) (E)-Pityol作为短毛松蛾聚集信息素的证据(鞘翅目:松毛虫科:松毛虫科)

IF 0.9 4区农林科学

Canadian Entomologist Pub Date : 2011-09-01 DOI: 10.4039/n11-022

S. López, C. Quero, J. C. Iturrondobeitia, Á. Guerrero, A. Goldarazena

引用次数: 11

Where Went the Dung-Breeding Insects of the American Bison? 美洲野牛的粪虫到哪里去了?

IF 0.9 4区农林科学

Canadian Entomologist Pub Date : 2011-09-01 DOI: 10.4039/n11-024

K. Tiberg, K. Floate

引用次数: 17

Effects of Gypsy Moth Establishment and Dominance in Native Caterpillar Communities of Northern Oak Forests 北栎林本地毛虫群落舞毒蛾建立及优势度的影响

IF 0.9 4区农林科学

Canadian Entomologist Pub Date : 2011-09-01 DOI: 10.4039/n11-025

Laura L. Timms, Sandy M. Smith

{"title":"Effects of Gypsy Moth Establishment and Dominance in Native Caterpillar Communities of Northern Oak Forests","authors":"Laura L. Timms, Sandy M. Smith","doi":"10.4039/n11-025","DOIUrl":"https://doi.org/10.4039/n11-025","url":null,"abstract":"Abstract \u0000 Little research has addressed the impacts of invasive-species establishment on native forest insect communities. Such information is lacking even for gypsy moth, Lymantria dispar (L.) (Lepidoptera: Erebidae), the most thoroughly studied invasive forest insect. We investigated the ecological impacts of gypsy moth on native species at sites in north-central Ontario, Canada, with and without significant histories of gypsy moth defoliation over a 2-year period. Patterns in native forest caterpillar communities are described using measures of species diversity and multivariate analysis. We documented a transition from low-level to dominant gypsy moth populations. Sites with different gypsy moth outbreak histories exhibited differences in rank-abundance distributions and dominance structures in the first year of the study; by the second year, gypsy moth was dominant at sites of both types irrespective of their previous defoliation history. Contrary to our predictions, we found that gypsy moth outbreak history had no significant effects on native caterpillar community diversity or structure. However, sites with currently high gypsy moth abundance demonstrated significant shifts in late-season caterpillar community structure. Our results suggest that observed community differences were due to the presence of a highly abundant folivore, and not to permanent shifts in the native community because of the introduction of an invasive species.","PeriodicalId":55289,"journal":{"name":"Canadian Entomologist","volume":"51 1","pages":"479 - 503"},"PeriodicalIF":0.9,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82757081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Sampling Tribolium confusum and Tribolium castaneum in Mill and Laboratory Settings: Differences Between Strains and Species 在工厂和实验室环境中取样:菌株和物种之间的差异

IF 0.9 4区农林科学

Canadian Entomologist Pub Date : 2011-09-01 DOI: 10.4039/n11-026

Karen J. Hawkin, D. Stanbridge, P. Fields

引用次数: 15

Ants and Subterranean Sternorrhyncha in a Native Grassland in East-Central Alberta, Canada 加拿大阿尔伯塔中东部原生草原上的蚂蚁和地下Sternorrhyncha

IF 0.9 4区农林科学

Canadian Entomologist Pub Date : 2011-09-01 DOI: 10.4039/n11-034

J. Newton, J. Glasier, H. Maw, H. Proctor, R. Foottit

{"title":"Ants and Subterranean Sternorrhyncha in a Native Grassland in East-Central Alberta, Canada","authors":"J. Newton, J. Glasier, H. Maw, H. Proctor, R. Foottit","doi":"10.4039/n11-034","DOIUrl":"https://doi.org/10.4039/n11-034","url":null,"abstract":"Abstract \u0000 Little is known about the associations of ants (Hymenoptera: Formicidae) with subterranean aphids and mealybugs (Hemiptera: Sternorrhyncha: Aphididae and Pseudococcidae), particularly in Canadian grasslands. Knowledge of host plants for these sternorrhynchans is equally rare. We carried out a plant-based survey of ants and belowground aphids and mealybugs in a native fescue grassland in east-central Alberta, Canada. We found 23 species of ants, 12 of which (species of Lasius F., Myrmica Latreille, Tapinoma Förster, and Temnothorax Mayr) were in association with subterranean sternorrhynchans. Twelve species of aphids and mealybugs were collected; 3 are new records for Canada and 2 are possibly undescribed. Most ant species associated with sternorrhynchans were found with more than one species of sternorrhynchan, sometimes in the same nest. Almost all sternorrhynchans were found on graminoid hosts (Poaceae and Cyperaceae); there was little observed plant-specificity beyond this. There were no significant correlations between presence of subterranean sternorrhynchans and percent cover of different plant types, soil moisture content, slope, aspect, or visible entrances to ant nests.","PeriodicalId":55289,"journal":{"name":"Canadian Entomologist","volume":"7 1","pages":"518 - 523"},"PeriodicalIF":0.9,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87549873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Relationships Between Gregarine Infection in Damselflies, Wetland Type, and Landscape Characteristics 豆娘Gregarine感染与湿地类型及景观特征的关系

IF 0.9 4区农林科学

Canadian Entomologist Pub Date : 2011-09-01 DOI: 10.4039/n11-028

Julia J. Mlynarek, Daniel G. Bert, G. Haydeé Peralta-Vázquez, Joanna A. James, Mark R. Forbes

{"title":"Relationships Between Gregarine Infection in Damselflies, Wetland Type, and Landscape Characteristics","authors":"Julia J. Mlynarek, Daniel G. Bert, G. Haydeé Peralta-Vázquez, Joanna A. James, Mark R. Forbes","doi":"10.4039/n11-028","DOIUrl":"https://doi.org/10.4039/n11-028","url":null,"abstract":"Abstract \u0000 Although human-modified landscapes are characterized by the loss of natural habitats, new habitats also can be created and exploited by many species. The importance of landscape change to invertebrate associations (particularly host-parasite associations) is under-studied. Our objective was to determine whether prevalence and intensity of gregarine parasitism in the damselfly Ischnura verticalis (Say) (Odonata: Coenagrionidae) differed between 17 artificial and 7 natural wetlands in landscapes that varied in amount of forest and wetland cover and road density determined at spatial extents of 500 m and 1 km from each wetland. Wetlands were located in and around Ottawa, Ontario, and Gatineau, Quebec, Canada. Wetland type did not account for significant variation in principal components based on forest and wetland cover and road density at either spatial extent. Gregarine prevalence was higher in damselflies collected from natural wetlands than in those collected from artificial wetlands and was positively associated with increasing forest cover. In contrast, gregarine intensity was inversely related to road density. Our results suggest that parasitism of damselflies by gregarines is associated with wetland type and landscape characteristics, although the mechanisms producing such relationships are unknown.","PeriodicalId":55289,"journal":{"name":"Canadian Entomologist","volume":"4 1","pages":"460 - 469"},"PeriodicalIF":0.9,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87558822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Unexpectedly High Levels of Parasitism of Wheat Stem Sawfly Larvae in Postcutting Diapause Chambers 麦秆锯蝇幼虫在刈割后滞育室中的寄生率异常高

IF 0.9 4区农林科学

Canadian Entomologist Pub Date : 2011-09-01 DOI: 10.4039/n11-023

T. Rand, D. Waters, T. Shanower

引用次数: 6

The Parasitoid Communities Associated with An Invasive Canola Pest, Ceutorhynchus obstrictus (Coleoptera: Curculionidae), in Ontario and Quebec, Canada 加拿大安大略省和魁北克省油菜籽入侵害虫大腹小蛾(鞘翅目:小蛾科)的寄生蜂群落

IF 0.9 4区农林科学

Canadian Entomologist Pub Date : 2011-09-01 DOI: 10.4039/n11-041

Peter G. Mason, J. Miall, Patrice Bouchard, David R. Gillespie, A. Broadbent, Gary A. P. Gibson

{"title":"The Parasitoid Communities Associated with An Invasive Canola Pest, Ceutorhynchus obstrictus (Coleoptera: Curculionidae), in Ontario and Quebec, Canada","authors":"Peter G. Mason, J. Miall, Patrice Bouchard, David R. Gillespie, A. Broadbent, Gary A. P. Gibson","doi":"10.4039/n11-041","DOIUrl":"https://doi.org/10.4039/n11-041","url":null,"abstract":"Abstract \u0000 Surveys were conducted to determine the parasitoid communities associated with the cabbage seedpod weevil, Ceutorhynchus obstrictus (Marsham), an important invasive pest of canola in Ontario and Quebec, Canada. More than 18 species of Chalcidoidea (Hymenoptera) were associated with this pest through mass rearings from canola siliques. In southwestern Ontario, the most abundant species were a species of Chlorocytus Graham (23.6%–48.6%), Lyrcus perdubius (Girault) (0%–53%), L. maculatus (Gahan) (2.8%–14.7%), and species of Pteromalus Swederus (0.6%–23.1%) (Pteromalidae). In contrast, the most abundant species in Quebec were Trichomalus lucidus (Walker) (Pteromalidae) (33.3%–56.4%), unidentified Eulophidae (2.1%–39.1%), Mesopolobus gemellus Baur and Muller (Pteromalidae) (1.3%21.4%), and Necremnus tidius (Walker) (Eulophidae) (11.5%–19.3%). In the Ottawa, Ontario, area, parasitoids were first recovered in 2008, and Trichomalus perfectus (Walker) (Pteromalidae), M. gemellus, and species of Pteromalus were most prevalent. Mesopolobus gemellus and T. perfectus are reported in North America for the first time. Although existing communities appear to provide substantial parasitism (e.g., 6.3%–26.3% in 2006), species composition varies among years and differs from that in other regions in North America. Thus, parasitism levels and parasitoid communities of the cabbage seedpod weevil should be monitored to assess whether these will increase or there is a need to introduce more host-specific species from Europe that could provide greater mortality.","PeriodicalId":55289,"journal":{"name":"Canadian Entomologist","volume":"55 7","pages":"524 - 537"},"PeriodicalIF":0.9,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4039/n11-041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72507698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

The New World Genera of Parathalassiinae (Diptera: Empidoidea: Dolichopodidae s.l.), with New Species of Thalassophorus and Eothalassius 标题副海蝇亚科新属(双翅目:海蝇总科:海蝇科)及海蝇亚属、海蝇亚属新种

IF 0.9 4区农林科学

Canadian Entomologist Pub Date : 2011-09-01 DOI: 10.4039/n11-027

S. E. Brooks, J. Cumming

{"title":"The New World Genera of Parathalassiinae (Diptera: Empidoidea: Dolichopodidae s.l.), with New Species of Thalassophorus and Eothalassius","authors":"S. E. Brooks, J. Cumming","doi":"10.4039/n11-027","DOIUrl":"https://doi.org/10.4039/n11-027","url":null,"abstract":"Abstract \u0000 The parathalassine genera Thalassophorus Saigusa, Eothalassius Shamshev and Grootaert, and Chimerothalassius Shamshev and Grootaert are recorded from the New World for the first time. Thalassophorus arnaudi Brooks and Cumming sp. nov. is described from specimens collected at coastal localities in British Columbia, Oregon, and California, and represents the second known species in the genus, the type species being T. spinipennis Saigusa, known only from Rishiri Island in Hokkaido Prefecture, Japan. Detailed illustrations of the male genitalia of T. spinipennis are provided. Eothalassius borkenti Cumming and Brooks sp. nov. is described from specimens collected along the Pacific coast of Costa Rica, bringing the total number of described species of this former Southeast Asian genus to three, with one probable additional described species in the Mediterranean region. The genus Chimerothalassius, which was previously known from a single New Zealand species, is recorded from the island of Dominica, based on a female specimen plus a slide-mounted wing of an undescribed species. A new undescribed parathalassiine genus is also recorded from Chile, based on limited material of two undescribed species. A key to the six genera of Parathalassiinae in the New World, including Parathalassius Mik and Microphorella Becker, is given, as are some preliminary remarks on the limits and phylogenetic relationships of the parathalassiine genera.","PeriodicalId":55289,"journal":{"name":"Canadian Entomologist","volume":"21 1","pages":"423 - 446"},"PeriodicalIF":0.9,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86494311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Field Investigation of Mating Behaviour of Agrilus cyanescens and Agrilus subcinctus 青花田鼠和下花田鼠交配行为的野外调查

IF 0.9 4区农林科学

Canadian Entomologist Pub Date : 2011-08-01 DOI: 10.4039/n11-011

J. Lelito, M. Domingue, I. Fraser, V. Mastro, J. Tumlinson, T. Baker

{"title":"Field Investigation of Mating Behaviour of Agrilus cyanescens and Agrilus subcinctus","authors":"J. Lelito, M. Domingue, I. Fraser, V. Mastro, J. Tumlinson, T. Baker","doi":"10.4039/n11-011","DOIUrl":"https://doi.org/10.4039/n11-011","url":null,"abstract":"Abstract \u0000 We examined mate-finding behaviour in Agrilus subcinctus Gory (Coleoptera: Buprestidae) and Agrilus cyanescens Ratzeburg (Coleoptera: Buprestidae) in ash (Fraxinus L. (Oleaceae)) stands in the Great Lakes region of the United States of America. Dead specimens of both species were affixed to ash foliage to serve as models to test visual stimulation of aerial attraction of males. The models were washed in dichloromethane to remove cuticular lipids or were left unwashed, to test for the presence of close-range pheromonal cues. Males of both species located females via a visually guided aerial approach from up to 1 m above females, similar to the behaviour of Agrilus planipennis Fairmaire. When male A. subcinctus or A. cyanescens made contact with females, contact sex pheromones mediated subsequent copulation behaviour. During their visually mediated airborne descent and landing, male A. cyanescens landed directly on female models; whereas, male A. subcinctus landed significantly more often on the leaf surface supporting a model. Male A. subcintus performed precopulatory pounce behaviour on female models after assessing surface chemical cues with their antennae. Male A. cyanescens landed upon a variety of models, but after landing, rejected a significant proportion of models lacking female A. cyanescens cuticular lipids.","PeriodicalId":55289,"journal":{"name":"Canadian Entomologist","volume":"48 1","pages":"370 - 379"},"PeriodicalIF":0.9,"publicationDate":"2011-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76314388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19