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The Canadian Field-Naturalist最新文献

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A male Little Brown Myotis (Myotis lucifugus) recaptured after 28 years at the same site in southwest Saskatchewan, Canada 在加拿大萨斯喀彻温省西南部的同一地点，一只28年后被捕获的雄性小棕腹虎(Myotis lucifugus)
The Canadian Field-Naturalist Pub Date : 2022-07-29 DOI: 10.22621/cfn.v136i1.2871
Joshua Christiansen, Dana Green, D. Bender, David L. Gummer, M. Kalcounis-Rueppell, Mark Brigham
{"title":"A male Little Brown Myotis (Myotis lucifugus) recaptured after 28 years at the same site in southwest Saskatchewan, Canada","authors":"Joshua Christiansen, Dana Green, D. Bender, David L. Gummer, M. Kalcounis-Rueppell, Mark Brigham","doi":"10.22621/cfn.v136i1.2871","DOIUrl":"https://doi.org/10.22621/cfn.v136i1.2871","url":null,"abstract":"Little Brown Myotis (Myotis lucifugus) is one of the most common and widely distributed mammals in Canada and has been recorded to live over 30 years in the wild. As part of a long-term bat research project in Cypress Hills Interprovincial Park, Saskatchewan, we recaptured a male Little Brown Bat in a mist net over Battle Creek on 12 June 2021. The bat was recaptured within 100 m of where it was first captured and banded as an adult in 1993, indicating that this bat was at least 29 years old and exhibited repeated use of the same summer flying, foraging, and drinking site. The bat was not caught in the intervening years; therefore, its frequency of use of this site is unknown. In eastern North America, this species has declined because of high mortality rates associated with White-nose Syndrome (WNS). WNS has been moving westward and has now been detected in eastern and western Saskatchewan. Understanding aspects of the natural history of Little Brown Bat, including longevity, is important before WNS is detected in a region and leads us to advocate continued marking of individuals (e.g., banding, PIT tagging) to continue learning about bat longevity and survival before and after WNS infection.","PeriodicalId":56136,"journal":{"name":"The Canadian Field-Naturalist","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73130112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First record of Azalea Sawfly (Euura lipovskyi, Hymenoptera: Tenthredinidae) in Canada 标题加拿大杜鹃花锯蝇(膜翅目:锯蝇科)首次记录
The Canadian Field-Naturalist Pub Date : 2022-07-29 DOI: 10.22621/cfn.v136i1.2859
H. Goulet, P. Catling, Brenda Kostiuk
{"title":"First record of Azalea Sawfly (Euura lipovskyi, Hymenoptera: Tenthredinidae) in Canada","authors":"H. Goulet, P. Catling, Brenda Kostiuk","doi":"10.22621/cfn.v136i1.2859","DOIUrl":"https://doi.org/10.22621/cfn.v136i1.2859","url":null,"abstract":"Azalea Sawfly (Euura lipovskyi) larvae found feeding on foliage and flowers of cultivated Flame Azalea (Rhododendron calendulaceum) in Ottawa, Ontario, in late May 2021 are the first records of this sawfly in Canada. The native range of Azalea Sawfly includes the eastern United States, but the species has extended its distribution recently to the Pacific northwest of North America and Europe. Recorded foodplants include Rhododendron calendulaceum, Rhododendron luteum, Rhododendron obtrusum, Rhododendron occidentale, Rhododendron molle, Rhododendron viscosum, and possibly Early Azalea (Rhododendron prinophyllum), all in Rhododendron section Pentanthera. The new combinations Euura lipovskyi and Euura azaleae are proposed.","PeriodicalId":56136,"journal":{"name":"The Canadian Field-Naturalist","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77696748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Key observations of flexed-leg urination in the free-ranging Gray Wolf (Canis lupus) 自由放养的灰狼(Canis lupus)屈曲腿排尿的关键观察
The Canadian Field-Naturalist Pub Date : 2022-07-29 DOI: 10.22621/cfn.v136i1.2781
D. Mech, Rick McIntyre
{"title":"Key observations of flexed-leg urination in the free-ranging Gray Wolf (Canis lupus)","authors":"D. Mech, Rick McIntyre","doi":"10.22621/cfn.v136i1.2781","DOIUrl":"https://doi.org/10.22621/cfn.v136i1.2781","url":null,"abstract":"Flexed-leg urination (FLU) in female Gray Wolves (Canis lupus) has been little studied in the wild. Captive females in packs do not exhibit FLU unless they are both mature and dominant to an associate female, but these characteristics have not been confirmed in free-ranging wolves. We present observations of wolves in Yellowstone National Park that accord with those of wolves in captivity, extend our knowledge of FLU in Gray Wolf, pose additional questions about it, and suggest new areas of study to better understand it.","PeriodicalId":56136,"journal":{"name":"The Canadian Field-Naturalist","volume":"441 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76960057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Foraging patterns vary with the degree of sociality among Common Loon (Gavia immer) overwintering on a freshwater lake 在淡水湖上越冬的潜鸟(Gavia immer)的觅食模式因社会性程度而异
The Canadian Field-Naturalist Pub Date : 2022-07-29 DOI: 10.22621/cfn.v136i1.2791
John Mager, Brooks Wade, Sherry Abts, J. Paruk
{"title":"Foraging patterns vary with the degree of sociality among Common Loon (Gavia immer) overwintering on a freshwater lake","authors":"John Mager, Brooks Wade, Sherry Abts, J. Paruk","doi":"10.22621/cfn.v136i1.2791","DOIUrl":"https://doi.org/10.22621/cfn.v136i1.2791","url":null,"abstract":"Little is known about the behaviour of Common Loon (Gavia immer) during the critical overwintering period, let alone the behaviour of the small, but increasing number of loons that overwinter on freshwater lakes in North America. We examined the diurnal time-activity budgets of Common Loon overwintering on a large reservoir in northwest South Carolina between 2018 and 2020. Similar to previous studies of breeding individuals and individuals that overwinter in marine waters, loons (n = 132) overwintering on this reservoir spent most of their time (52%) foraging. However, we found distinct differences in the activity budgets of individuals associated with their degree of sociality. Solitary birds (individuals spending 0–20% of time within 20 m of conspecifics) spent significantly more time foraging than did those that were either loosely-social (>20–<70% of time within 20 m of conspecifics) or strongly-social (70–100% of time). Although solitary loons made as many foraging dives as social birds, their dives were much longer, likely reflecting dives for larger predatory fish. In contrast, social individuals made much shorter, shallower dives, often foraging on shallower baitfish that they appear to pursue to the water surface and consume collectively. Such findings add to our understanding of loon winter behaviour and raise interesting questions regarding social behaviour and the short- and long-term trade-offs associated with social foraging in this species.","PeriodicalId":56136,"journal":{"name":"The Canadian Field-Naturalist","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75073825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A tribute to James Edwin Cruise, Ph.D., L.L.D., 1925–2021 致敬詹姆斯·埃德温·克鲁斯，博士，l.l.d.， 1925-2021
The Canadian Field-Naturalist Pub Date : 2022-07-29 DOI: 10.22621/cfn.v136i1.2951
P. Catling, Sheila Kuja, E. Haber, John Riley, K. Lindsay, Ron Thorpe
{"title":"A tribute to James Edwin Cruise, Ph.D., L.L.D., 1925–2021","authors":"P. Catling, Sheila Kuja, E. Haber, John Riley, K. Lindsay, Ron Thorpe","doi":"10.22621/cfn.v136i1.2951","DOIUrl":"https://doi.org/10.22621/cfn.v136i1.2951","url":null,"abstract":"","PeriodicalId":56136,"journal":{"name":"The Canadian Field-Naturalist","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74005329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A highly anomalous Red-winged Blackbird (Agelaius phoeniceus) song 一种非常反常的红翅黑鹂(黑鹂)的歌声
The Canadian Field-Naturalist Pub Date : 2022-07-29 DOI: 10.22621/cfn.v136i1.2877
Brandon Edwards, A. Binley, Willow B. English, E. Hudgins, Samuel Snow
{"title":"A highly anomalous Red-winged Blackbird (Agelaius phoeniceus) song","authors":"Brandon Edwards, A. Binley, Willow B. English, E. Hudgins, Samuel Snow","doi":"10.22621/cfn.v136i1.2877","DOIUrl":"https://doi.org/10.22621/cfn.v136i1.2877","url":null,"abstract":"Red-winged Blackbird (Agelaius phoeniceus) is a highly vocal species with a repertoire of similar, yet acoustically distinct songs. These songs may be altered drastically if, as a nestling, the male goes deaf or becomes acoustically isolated. In deaf Red-winged Blackbirds, these dramatic song alterations may present as songs bearing slight resemblance to the introductory phrase of their normal song. Here, we present a Red-winged Blackbird song observed in Ottawa, Ontario, Canada, that is far outside any normal variation in Red-winged Blackbird songs. Given the individual’s age and the consistency of the anomalous song, it is possible that this is a deaf bird.","PeriodicalId":56136,"journal":{"name":"The Canadian Field-Naturalist","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72655322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Raven (Corvus corax) as a novel food item for lynx (Lynx canadensis) 乌鸦(Corvus corax)作为猞猁(lynx canada)的新食物
The Canadian Field-Naturalist Pub Date : 2022-07-29 DOI: 10.22621/cfn.v136i1.2769
T. Jung
{"title":"Raven (Corvus corax) as a novel food item for lynx (Lynx canadensis)","authors":"T. Jung","doi":"10.22621/cfn.v136i1.2769","DOIUrl":"https://doi.org/10.22621/cfn.v136i1.2769","url":null,"abstract":"Canada Lynx (Lynx canadensis) is a specialist predator of Snowshoe Hare (Lepus americanus), which dominates its diet. However, hare populations cycle over 9–11 years, and many lynx disperse or starve during cyclic lows of their prey. Here, I report observations of Canada Lynx scavenging and attempting to prey on Common Raven (Corvus corax). In addition, I provide a brief review of birds as a food item of lynx. These are the first observations of ravens as a food source for lynx and may be a response to lynx being malnourished. The value of these observations is that they highlight the adaptability of some lynx to opportunistically use novel prey species during the decline phase of cyclic Snowshoe Hare.","PeriodicalId":56136,"journal":{"name":"The Canadian Field-Naturalist","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82184488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
First report of Eastern Red-backed Salamander (Plethodon cinereus) on Newfoundland 纽芬兰东部红背蝾螈(Plethodon cinereus)首次报道
The Canadian Field-Naturalist Pub Date : 2022-07-29 DOI: 10.22621/cfn.v136i1.2811
J. Baxter‐Gilbert, Lorne King, J. Riley
{"title":"First report of Eastern Red-backed Salamander (Plethodon cinereus) on Newfoundland","authors":"J. Baxter‐Gilbert, Lorne King, J. Riley","doi":"10.22621/cfn.v136i1.2811","DOIUrl":"https://doi.org/10.22621/cfn.v136i1.2811","url":null,"abstract":"The island of Newfoundland has no native amphibian taxa, although six species of Anura (i.e., frogs and toads) have been introduced since European colonisation, four of which have established self-sustaining populations. Here, we document Eastern Red-backed Salamander (Plethodon cinereus) on Newfoundland for the first time, in what appears to be a self-sustaining population near Conception Bay South. This is the first species of Caudata (i.e., newts and salamanders) to have been introduced to the island, as well as the first occurrence of Eastern Red-backed Salamander establishing a population outside its native range. The impact that this non-native species might have on forest ecosystems on Newfoundland is unclear and further study is required to determine whether eradication of the species from Newfoundland is necessary or feasible.","PeriodicalId":56136,"journal":{"name":"The Canadian Field-Naturalist","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88213477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Serum biochemistry suggests a physiological response to environmental stress in a native urban Eastern Gray Squirrel (Sciurus carolinensis) population 城市东部灰松鼠(Sciurus carolinensis)的血清生化反应表明其对环境胁迫的生理反应
The Canadian Field-Naturalist Pub Date : 2022-07-29 DOI: 10.22621/cfn.v136i1.2573
C. Schmidt, Jason R. Treberg, R. Kinnunen, C. Garroway
{"title":"Serum biochemistry suggests a physiological response to environmental stress in a native urban Eastern Gray Squirrel (Sciurus carolinensis) population","authors":"C. Schmidt, Jason R. Treberg, R. Kinnunen, C. Garroway","doi":"10.22621/cfn.v136i1.2573","DOIUrl":"https://doi.org/10.22621/cfn.v136i1.2573","url":null,"abstract":"Urban wildlife populations experience human-driven environmental changes that can be both beneficial and detrimental to individual health. We measured body condition and serum chemistry (electrolyte levels, markers of kidney and liver function, protein, glucose, and cholesterol) in a native urban and rural population of Eastern Gray Squirrel (Sciurus carolinensis) to assess whether we could detect physiological responses to environmental stressors or dietary differences. We found no differences in body condition between habitats and no evidence of malnutrition at either site. However, urban squirrels had higher blood glucose, lower potassium, phosphorus, chloride, and albumin:globulin ratios. These results align with previous findings of increased dietary sugar in cities and suggest that urban populations of gray squirrels are under greater environmental stress than rural populations, providing future directions for studying physiological responses to urbanization.","PeriodicalId":56136,"journal":{"name":"The Canadian Field-Naturalist","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84377323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
"A Trillion Trees: Restoring Our Forests by Trusting in Nature" by Fred Pearce, 2022. [book review] 《一万亿棵树:相信自然恢复我们的森林》，作者弗雷德·皮尔斯，2022年。(书评)
The Canadian Field-Naturalist Pub Date : 2022-07-29 DOI: 10.22621/cfn.v136i1.3023
Robin Collins
{"title":"\"A Trillion Trees: Restoring Our Forests by Trusting in Nature\" by Fred Pearce, 2022. [book review]","authors":"Robin Collins","doi":"10.22621/cfn.v136i1.3023","DOIUrl":"https://doi.org/10.22621/cfn.v136i1.3023","url":null,"abstract":"","PeriodicalId":56136,"journal":{"name":"The Canadian Field-Naturalist","volume":"174 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88464235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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