03 February 2014 Road to Recovery: Oregon Silverspot Butterfly Posted by: John Yeingst | 3 comments | Share: Defenders of Wildlife has set itself the goal of moving more than 100 endangered species up the federal recovery ladder over the next decade. Our “Road to Recovery” series will highlight several of these plants and animals and outline the challenges that lay ahead for improving their status. As far as imperiled species go, the Oregon silverspot butterfly (Speyeria zerene hippolyta) has taken a dramatic turn for the better. This is saying a lot considering that in the 1990’s the population nearly crashed after a series of declines. Fortunately, environmental threats were recognized early enough to ensure its continued existence, and on October 15, 1980, the Oregon silverspot was federally listed under the Endangered Species Act as a threatened species. Since then, a zoo-based captive rearing and release program has been established so that new populations can thrive. The silverspot is best known for being as beautiful as it is rare. It is a brown, yellow and orange butterfly with silver metallic spots and black veins that run up and down the dorsal side of its wings. Its smaller figure and darker wing coloration make it easily distinguishable from other species sharing its habitat. These inherited traits also help the silverspot to survive in its foggy and windy environments. Historically, the Oregon silverspot once thrived in coastal habitat in Oregon, Northern California and Washington, but today it is found at only four locations in Oregon. What makes survival so tenuous for the silverspot is that it requires at least one of three types of grasslands. In order to successfully complete its development, silverspot larvae must have access to the early blue violet (Viola adunca) as a food source. This violet is confined to only three environments: coastal salt spray meadows, marine terrace meadows, and sandy dunes. The scarcity of this wild violet is what truly makes survival for this beautiful butterfly so difficult. Currently, the known range of the silverspot butterfly is limited to select places in Lane, Tillamook, and Del Norte counties, all of which are in coastal Oregon. Even within such a limited environment, this rare insect still faces several threats. Like most specialized wildlife, agriculture, habitat fragmentation, and human development serve as the predominant threats to its existence. Off-road vehicles, livestock grazing, and fires are additional causes of population decline. In 1998, the USFWS partnered with the Oregon Zoo and Woodland Park Zoo in Seattle, Washington to launch a population supplementation program. Adding zoo-raised butterflies to wild populations helps stop current populations from going extinct. Conservationists predict that around 2,000 butterflies are released each year on the Oregon coast. Without the help and support of these zoo-rearing programs, it is possible that many Oregon silverspot populations would now be extinct. This technique has proven to be effctive for the Oregon silverspot and with every bit of support it receives; its numbers will continue to rise. 3 Responses to “Road to Recovery: Oregon Silverspot Butterfly” Jane Clugston February 3rd, 2014 Thank you for this! I am working on a puppet show about the silver spot butterfly! Cindy February 4th, 2014 Please allow funding for the Oregon Silverspot butterfly. To invest in nature is at our best interest for the planet and pollination. Let us not be ignorant as to ignore it. God bless you. Debbie Beracha February 4th, 2014 Oregon is a special place. For anyone who lives there or visits, you know this to be true. Please do all you can to protect this one-of-a-kind habitat for this endangered Oregon Silverspot butterfly. Post Your Comment Click here to cancel reply. Name (required) Mail (required) (will not be published) You May also be interested in Safety Pens Mean Peace of Mind in Panther Country For Floridians who live alongside Florida panthers, coexistence means finding ways to protect both their beloved pets and these critically endangered cats. Building an enclosure is a great solution, especially for backyard animals. It’s Time to Act for Right Whales Years after they agreed to expand critical habitat for endangered North Atlantic right whales, we’re still waiting on NMFS to follow through. So we took to the courts to get this much-needed protection in place. How Should We Honor Earth Day? America has many worldwide firsts in conservation: we were the first nation to establish a national park, the first to create a national wildlife refuge, the first to approve a law protecting endangered species and the first to create a national day dedicated to conservation, Earth Day. But today, we are experiencing another period of crisis in America’s commitment to conservation. When did conservation become a polarizing political issue, when it has been, for the past century, a defining characteristic of American values and the American spirit?