{"id":7129,"date":"2016-05-04T13:33:32","date_gmt":"2016-05-04T18:33:32","guid":{"rendered":"https:\/\/wildlifepreservation.ca\/?p=7129"},"modified":"2016-09-20T10:29:01","modified_gmt":"2016-09-20T15:29:01","slug":"captive-breeding-no-silver-bullet-for-endangered-canadian-bats-study-finds","status":"publish","type":"post","link":"https:\/\/wildlifepreservation.ca\/fr\/captive-breeding-no-silver-bullet-for-endangered-canadian-bats-study-finds\/","title":{"rendered":"Captive Breeding No Silver Bullet for Endangered Canadian Bats, Study Finds"},"content":{"rendered":"

Media Release\u00a0 May 4, 2016, Guelph, ON\u00a0\u00a0 DOWNLOAD<\/a>
\n<\/em><\/p>\n

Captive breeding is well known as an effective last-ditch technique to prevent the extinction of endangered wildlife species, but a new study suggests it may be of little use in saving North American bats decimated by the recent outbreak of white-nose syndrome.<\/p>\n

\u00ab\u00a0In many ways, the spread of white-nose syndrome among bats parallels the spread of chytrid fungus among frogs and other amphibians,\u00a0\u00bb says the study’s lead author, Dr. Christina Davy of Trent University.\u00a0 \u00ab\u00a0Several amphibian species have been conserved by the establishment of captive assurance populations in zoos, and captive management has been proposed as a conservation tool for bats as well.\u00a0 Unfortunately, the hibernating, insect-eating bat species affected by white-nose syndrome have complex requirements that are challenging to meet in captivity.\u00a0\u00bb<\/p>\n

The Wildlife Preservation Canada study used a combination of simulation modeling, a survey of available infrastructure, literature reviews, and consultations with experts to determine the feasibility of bringing wild bats endangered by the fungus into captivity in order to preserve them.\u00a0 The results showed that, while there is considerable enthusiasm for the idea among conservation scientists, established husbandry methods are lacking, and little capacity is available.<\/p>\n

The study focused on five bat species affected by the spread of the disease in eastern Canada: the little brown, northern long-eared, eastern small-footed, tricoloured, and big brown bat.\u00a0 Of these, eastern small-footed and tricoloured bats are so rare that it would likely be impossible to collect enough individuals to form a viable captive population.\u00a0 The big brown bat, meanwhile, appears to be resistant enough to the disease that bringing it into captivity isn’t warranted.<\/p>\n

Only the little brown and northern long-eared bats were determined to be potential candidates for captive breeding in Canada.\u00a0 The survivorship of these species in captivity, however, was found to be low.\u00a0 Although experimental colonies have been kept for short times in the past, the researchers found no examples of colonies successfully maintained for longer than 3 years, or of any successful breeding in captivity.<\/p>\n

The researchers also found no examples of reintroduction of insect-eating, hibernating bats into the wild following long-term captivity.\u00a0 Individual bats treated at wildlife rehabilitation facilities have been released after short-term captivity, but in those cases survivorship has not been assessed.<\/p>\n

Finally, even if proven husbandry techniques did exist, none of the 13 zoos and 29 wildlife rehabilitation facilities surveyed currently have the infrastructure required to house and care for a long-term captive colony.<\/p>\n

\u00ab\u00a0The fungus that causes white-nose syndrome is now almost certainly a permanent resident in affected hibernacula,\u00a0\u00bb notes Dr. Davy, \u00a0\u00bb so even if we could breed bats in captivity and release them into the wild, they’d face the same threat.\u00a0\u00a0 The best hope appears to be an evolutionary response in which a resistant genetic profile emerges in the wild population.\u00a0\u00bb\u00a0 In the meantime, Dr. Davy recommends studies of post-release survival of individual, rehabilitated bats, and possibly some small-scale captive colony experiments, to close key knowledge gaps and prepare for a possible future in which disease-resistant bats could be reintroduced to areas where they’ve been wiped out.<\/p>\n

Although Wildlife Preservation Canada is known for its expertise in captive breeding and other \u00ab\u00a0hands-on\u00a0\u00bb species recovery techniques, its Executive Director, Randal Heide, notes that this doesn’t mean the organization advocates such intervention in all cases.\u00a0 \u00ab\u00a0We’re passionate about preventing extinction,\u00a0\u00bb says Heide, \u00ab\u00a0but we are first and foremost science-driven.\u00a0 In this case, the science says we have a lot to learn before any large-scale captive breeding program should be attempted – and it may never be appropriate.\u00a0\u00bb<\/p>\n

The study was co-authored by Amelia Whitear of Wildlife Preservation Canada, and was funded through a grant from the K. M. Hunter Foundation.\u00a0\u00a0 It was recently published in the Zoological Society of London’s journal Animal Conservation<\/u>.<\/p>\n

Read full study. <\/a><\/p>\n

About Wildlife Preservation Canada<\/strong><\/p>\n

Established in 1985, Wildlife Preservation Canada is a national charity devoted to saving endangered animal species facing imminent extinction in Canada \u2013 species whose numbers in the wild are so low that habitat protection alone is not enough. \u00a0\u00a0Wildlife Preservation Canada is currently working with over twenty mammal, reptile, amphibian, bird, and insect species in projects ranging from Nova Scotia to Vancouver Island, making it the only organization in Canada to provide hands-on care to multiple species in multiple recovery efforts across the country.\u00a0 For more information, please visit https:\/\/wildlifepreservation.ca<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

Contact:\u00a0 519-836-9314 or admin@wildlifepreservation.ca<\/p>\n","protected":false},"excerpt":{"rendered":"

Media Release\u00a0 May 4, 2016, Guelph, ON\u00a0\u00a0 DOWNLOAD Captive breeding is well known as an effective last-ditch technique to prevent the extinction of endangered wildlife species, but a new study suggests it may be of little use in saving North American bats decimated by the recent outbreak of white-nose syndrome. \u00ab\u00a0In many ways, the spread […]<\/p>\n","protected":false},"author":2,"featured_media":7131,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[65],"tags":[],"class_list":["post-7129","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"\nCaptive Breeding No Silver Bullet for Endangered Canadian Bats, Study Finds - Conservation de la Faune au Canada<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wildlifepreservation.ca\/fr\/captive-breeding-no-silver-bullet-for-endangered-canadian-bats-study-finds\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Captive Breeding No Silver Bullet for Endangered Canadian Bats, Study Finds - 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