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pro vyhledávání: '"David G. James"'
Autor:
David G. James
Publikováno v:
Insects, Vol 15, Iss 1, p 40 (2024)
Monarch butterfly populations in western North America suffered a substantial decline, from millions of butterflies overwintering in California in the 1980s to less than 400,000 at the beginning of the 21st century. The introduction of neonicotinoid
Externí odkaz:
https://doaj.org/article/ede63b84301340f09c63721270752186
Publikováno v:
Insects, Vol 13, Iss 1, p 64 (2022)
This is a reply to the comment from Davis [...]
Externí odkaz:
https://doaj.org/article/4883cf4e11b64c858dc88f4babcc525a
Publikováno v:
Insects, Vol 12, Iss 10, p 946 (2021)
The western North American monarch butterfly population assessed by counts of non-reproductive overwintering butterflies at coastal sites in California declined to less than 2000 in 2020/21. Simultaneously, reports of reproductive monarchs increased
Externí odkaz:
https://doaj.org/article/9667a6fb443c4c2ebe36ca4b1e48b6ab
Autor:
David G. James, Linda Kappen
Publikováno v:
Insects, Vol 12, Iss 2, p 161 (2021)
The fall migration of monarch butterflies, Danaus plexippus (L.), in the Pacific Northwest was studied during 2017–2019 by tagging 14,040 captive-reared and 450 wild monarchs. One hundred and twenty-two captive-reared monarchs (0.87%) were recovere
Externí odkaz:
https://doaj.org/article/73acdc09aab946f98199e9666d7aa784
Autor:
David G. James
Publikováno v:
Insects, Vol 10, Iss 9, p 276 (2019)
The monarch butterfly in North America has suffered a serious population decline since the mid-1990s. The introduction and widespread use of neonicotinoid insecticides during the same time period has been suggested as a potential driver of this decli
Externí odkaz:
https://doaj.org/article/4b93b3bdb89041729d0c94024d005590
Publikováno v:
Insects, Vol 9, Iss 3, p 76 (2018)
Big sagebrush (Artemisia tridentata) characterizes and dominates the sagebrush steppe, the largest temperate semi-desert ecosystem in North America. The beneficial arthropod fauna hosted by A. tridentata is poorly known but could be of importance to
Externí odkaz:
https://doaj.org/article/6f485aac0a0e4b5e8aa0e37bad042b29
Publikováno v:
Insects, Vol 7, Iss 3, p 30 (2016)
Native plant and beneficial insect associations are relatively unstudied yet are important in native habitat restoration programs for improving and sustaining conservation biological control of arthropod pests in agricultural crops. Milkweeds (Asclep
Externí odkaz:
https://doaj.org/article/b85ac6eb6e2d41aead17081fe98c8cc7
Autor:
David G. James
Publikováno v:
Animal Migration, Vol 8, Iss 1, Pp 19-26 (2021)
Monarch butterflies in western North America typically migrate each fall from the Pacific Northwest to overwintering sites in California. Winter 2020/21 saw the lowest number of overwintering western monarch butterflies ever recorded, but was also ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6af7c42bb22c81b7e0117d995725a2dd
https://doi.org/10.1515/ami-2021-0002
https://doi.org/10.1515/ami-2021-0002
Publikováno v:
Insects
Volume 12
Issue 10
Insects, Vol 12, Iss 946, p 946 (2021)
Volume 12
Issue 10
Insects, Vol 12, Iss 946, p 946 (2021)
Simple Summary Populations of western monarch butterflies, which formerly populated coastal overwintering sites in California in numbers exceeding one million, dwindled to less than 2000 in 2020/21. In the same winter, breeding populations of monarch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6c840263ee1e4ec4f2429e0ea163573
Autor:
David G. James, David J. Lohman
A beautifully illustrated introduction to the lives of butterflies around the worldThere are more than fifteen thousand butterfly species in the world, fluttering through a wide variety of habitats. Bright and beautiful, butterflies also have fascina
