Northern long-eared bat

Northern long-eared bat
Name	Northern long-eared bat
Status	Threatened
Status system	IUCN3.1
Genus	Myotis
Species	septentrionalis
Authority	(Trouessart, 1897)

Northern long-eared bat is a species of vesper bat native to North America, recognized for its long ears and insectivorous diet. It is subject to conservation concern and legal protection due to population declines linked to disease and habitat loss, attracting attention from agencies such as the United States Fish and Wildlife Service, Environment and Climate Change Canada, and conservation organizations like Bat Conservation International.

Taxonomy and Naming

Described by Édouard Trouessart in 1897, the species was placed within the genus Myotis, which includes taxa treated by researchers at institutions such as the Smithsonian Institution and the American Museum of Natural History. Taxonomic treatments reference works by systematists connected to the Natural History Museum, the Royal Ontario Museum, and academic presses including Oxford University Press. Nomenclatural decisions have been informed by revisions from committees convened by the International Union for Conservation of Nature and the American Society of Mammalogists, and molecular studies conducted at universities like Harvard University, University of California, and McGill University.

Description and Identification

Adults are small to medium-sized members of the family Vespertilionidae and are identified by elongated pinnae compared in keys used by the Field Museum and the Canadian Museum of Nature. Morphological characters are compared using guides published by the National Audubon Society, Cornell Laboratory of Ornithology, and the British Museum. Identification in field surveys often references protocols of the North American Bat Monitoring Program and uses morphological comparisons with species treated in monographs from universities such as Yale University and University of Michigan. Diagnostic measurements are reported in journals including Journal of Mammalogy and Mammalia.

Distribution and Habitat

The species ranges across much of the boreal and temperate forests of North America, with distributions mapped by agencies including USGS, Parks Canada, and state natural heritage programs like those in Minnesota and Wisconsin. Habitat associations draw on studies conducted in landscapes managed by the National Park Service, Forest Service, and provincial parks such as Algonquin Provincial Park. Elevational and latitudinal limits are compared to records from institutions like the Canadian Biodiversity Information Facility, National Science Foundation-funded projects, and museum collections at the Burke Museum and Royal Ontario Museum.

Behavior and Ecology

Foraging behavior has been described in ecological studies published in Ecology and Journal of Wildlife Management, often in collaboration with researchers at universities such as University of Minnesota, Purdue University, and McMaster University. The species feeds primarily on nocturnal Lepidoptera and Coleoptera, with dietary analyses reported by laboratories associated with the Smithsonian Environmental Research Center and the Biodiversity Institute of Ontario. Roosting ecology has been studied in contexts involving land managed by the U.S. Forest Service, state parks, and conservation NGOs such as The Nature Conservancy. Seasonal movements and hibernation patterns have been documented by field teams linked with the National Park Service, Canadian Wildlife Service, and provincial wildlife agencies.

Reproduction and Life Cycle

Reproductive timing and maternity roosting have been detailed in studies from institutions such as Indiana State University, Ohio State University, and University of Vermont, and published in journals like Behavioral Ecology and Acta Chiropterologica. Maternity colonies use foliage and crevice roosts found in landscapes overseen by agencies including Bureau of Land Management and provincial ministries of natural resources. Life history parameters such as age at first reproduction, litter size, and longevity are compared across populations sampled through mark–recapture programs coordinated with the North American Bat Monitoring Program and university research programs supported by the National Science Foundation.

Threats and Conservation

Primary threats include white-nose syndrome, a fungal disease first documented in sites like Howe Caverns and described in research from institutions such as the University of Kentucky, US Geological Survey, and Cornell University. Habitat alteration from logging practices regulated by agencies such as the U.S. Forest Service and Ontario Ministry of Natural Resources, as well as wind-energy development assessed by the Department of Energy and Environment and organizations like the American Wind Energy Association, also contribute to declines. Conservation responses involve listings under statutes administered by the United States Fish and Wildlife Service, recovery planning coordinated with Environment and Climate Change Canada, mitigation guidelines produced by state departments of natural resources, and implementation by NGOs including Bat Conservation International and local land trusts.

Human Interactions and Management

Management actions include habitat protection on lands owned by the National Park Service and provincial parks, disease management research led by the Centers for Disease Control and Prevention and university partners, and outreach conducted by organizations such as the Audubon Society and Nature Conservancy chapters. Monitoring protocols have been developed in collaboration with the North American Bat Monitoring Program, USGS, and provincial wildlife agencies, while mitigation measures for infrastructure siting involve consultation with the Federal Energy Regulatory Commission and state utility commissions. Public education campaigns and community science initiatives have been organized by museums, universities, and conservation NGOs to reduce human disturbance at hibernacula and promote evidence-based stewardship.

Category:Myotis Category:Bats of North America