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| American burying beetle | |
|---|---|
| Name | American burying beetle |
| Status | Endangered |
| Status system | ESA |
| Genus | Nicrophorus |
| Species | americanus |
| Authority | (Olivier, 1790) |
American burying beetle is an endangered species of carrion beetle formerly widespread across much of the United States, Mexico, and parts of Canada. Once common in grassland and woodland ecosystems, dramatic declines in its range have made it a focus of conservation programs involving agencies such as the U.S. Fish and Wildlife Service, universities, and non‑governmental organizations. Recovery efforts intersect with land management policies, endangered species law, and habitat restoration initiatives led by institutions including state wildlife agencies and research centers.
The species is classified within the family Silphidae and genus Nicrophorus, described by Guillaume-Antoine Olivier in 1790. Morphologically, adults are strikingly marked with orange and black elytra and conspicuous antennal clubs, resembling related taxa such as Nicrophorus investigator and Nicrophorus vespilloides. Diagnostic traits used in taxonomic treatments by museums like the Smithsonian Institution and the Field Museum of Natural History include elytral patterning, pronotal shape, and genital morphology described in monographs and keys used by entomologists at institutions such as Harvard University and the University of California, Berkeley.
Historically recorded from the Great Plains, Midwest United States, New England, Ontario, and Mexico, the beetle’s contemporary distribution is fragmented, with extant populations in regions like Nebraska, Oklahoma, Massachusetts, Rhode Island, New York (state), Maine, Arkansas, and isolated sites in Ontario (province). Habitat associations include open grasslands, coastal dunes, and mixed deciduous woodlands similar to those found in protected areas managed by the National Park Service, U.S. Fish and Wildlife Service, and state parks such as Fort Niobrara National Wildlife Refuge and Pine Barrens. Landscape changes from agriculture promoted by policies like the Homestead Act and infrastructure expansion across corridors such as the Lincoln Highway have been implicated in range contraction according to studies conducted by researchers affiliated with the University of Nebraska and Oklahoma State University.
Breeding biology involves locating small vertebrate carcasses, a behavior documented in classical ethology literature and contemporary studies at institutions like Cornell University and Iowa State University. After carcass burial, biparental care is exhibited, with both male and female adults provisioning larvae—an unusual trait highlighted in works associated with authors from Oxford University Press and reviewers at the Royal Society. Larval development, pupation, and generation time have been characterized in laboratory colonies maintained by the New England Aquarium and university laboratories at University of Massachusetts Amherst. Factors affecting reproductive success include carrion availability linked to populations of small mammals like Peromyscus maniculatus and birds monitored by programs at the Audubon Society and the Smithsonian Migratory Bird Center.
As necrophagous insects, American burying beetles play roles in nutrient cycling comparable to functions described for scavengers in ecosystems managed by agencies such as the United States Geological Survey and the Environmental Protection Agency. By burying carcasses, they affect soil chemistry studied in collaboration with researchers at Iowa State University and assist in reducing disease vectors in agricultural landscapes monitored by departments such as the United States Department of Agriculture. Their interactions with competitors and parasitoids have been documented alongside species discussed in entomological collections at the Natural History Museum, London and the Royal Ontario Museum.
Listed as endangered under the Endangered Species Act and protected by provincial regulations in Ontario (province), the beetle faces threats from habitat loss, pesticide exposure tied to programs overseen by the Environmental Protection Agency, road mortality along corridors like the Interstate Highway System, and declines in small vertebrate carrion due to changes in land use driven by policies such as the Agricultural Adjustment Act. Climate change projections published by groups including the Intergovernmental Panel on Climate Change and land conversion models from the United Nations Environment Programme further exacerbate vulnerability. Conservation assessments have been undertaken by teams from the U.S. Fish and Wildlife Service, Canadian Wildlife Service, and academic partners at University of Rhode Island.
Recovery plans developed by the U.S. Fish and Wildlife Service and state wildlife agencies emphasize habitat restoration, captive rearing, and reintroduction programs coordinated with universities and NGOs like the Center for Biological Diversity and the Nature Conservancy. Reintroduction sites have included protected properties managed by the National Park Service, state agencies in Massachusetts and Oklahoma, and conservation lands stewarded by organizations such as the American Museum of Natural History affiliates and regional land trusts. Legal frameworks invoking the Endangered Species Act guide recovery criteria, while funding and partnerships often involve the U.S. Fish and Wildlife Service’s Ecological Services, state natural heritage programs, and research grants from the National Science Foundation.
Ongoing monitoring employs mark–recapture studies, genetic analyses facilitated by cores at institutions like Cold Spring Harbor Laboratory and The Johns Hopkins University, and landscape modeling using GIS tools developed at Esri and academic GIS centers. Key research topics include population genetics published in journals affiliated with the Ecological Society of America and behavioral ecology studies conducted by teams at University of Nebraska–Lincoln and Oklahoma State University. Collaborative networks involve partnerships with museums such as the American Museum of Natural History, conservation NGOs, and federal agencies to maintain long‑term datasets informing adaptive management under programs coordinated by the U.S. Fish and Wildlife Service and interagency initiatives.
Category:Silphidae