User:Romarcum/Fender's blue butterfly

Overall the article is neutral in tone, and the content present is relevant. However, there is room for improvement especially in the conservation section. Even as recent as last year, some changes have occurred in the Fender's blue butterfly population. More information can also be added about morphology, life cycle, and mutualistic relationships.

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The male and female can be identified by their difference in wing color. The Fender's Blue Butterfly was added to the endangered species list in January 2000, but is now being taken off and reclassified as "threatened". ^[1] The Fender's blue butterfly population has increased over the past 20 years and projected to increase more through conservation efforts. ^[2] In Willamette Valley, Oregon there are currently 90 sites filled with Fender's blue. ^[3]

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History

The subspecies was first documented in the 1920s and was described to science in 1931 by biologist Ralph Macy, who named it for his friend, Kenneth Fender, an entomologist and mail carrier. The subspecies was not seen after the 1930s and was presumed extinct due to habitat loss of Kincaid's Lupine. Small populations were rediscovered in 1989 by Dr. Paul Hammond. Its eponym, Fender, had died nine years earlier.^[4] In 2013, Fender's Blue Butterfly was classified in the genus Icaricia. ^[5].

Morphology

All Fender's Blue Butterflies have a wingspan of approximately one inch. Males of this species can be identified by the upper side of their wing having an iridescent sky blue color. The females can be identified by their rust brown wing color. Both sexes have a black border outlined by a white fringe on the dorsal or upper side of their wings. The underside of their wings is a pearly gray color that contains either black or brown spots that are outlined in white. Females are brown to remain more camouflaged. ^[6]

Ecology[edit]

Host plant[edit]

Fender's blue butterfly is host-specific to Kincaid's lupine (Lupinus sulphureus kincaidii), a rare subspecies of the common sulphur lupine.^[7] Kincaid's lupine is found in grassland habitats in Willamette Valley, Oregon. ^[8] In January 2000, Kincaid's lupine was listed as a threatened species.^[5] Two other species of lupine, Lupinus arbustus (longspur lupine) and Lupinus albicaulis (sickle-keeled lupine), have been documented as host plants as well.^[5]

As Fender's blue butterfly prefers to feed on the lupine's flowers, a reduction in lupine availability limits the butterfly's food sources and distribution.^[9] Females in particular prefer native nectar, with a study by Thomas and Schultz finding only 20% of nectar was obtained from nonnative plants.^[10] The majority of nectar eaten by Fender's blue butterfly comes from wildflowers in the prairie.^[5]

Life Cycle

The life cycle of the Fender’s Blue Butterflies takes a total of one year to complete. Eggs are laid on the underside of the Kincaid’s lupine leaves between May and June. Eggs hatch after a few weeks, and larvae feed on Kincaid’s lupine leaves until early July. After feeding, larvae migrate down the base of the lupine leaf and enter diapause until activating again in March. Larvae continue to develop until pupation occurs in April. Adult Fender's Blue Butterflies will then emerge in May. As an adult, it lives for no more than three weeks, during which time it mates, feeds, and the female seeks Kincaid's lupines on which to oviposit.^[7]

Mutualism

Habitat destruction

Fender's blue butterfly is endemic to the Willamette Valley in Oregon, where its habitat is fragmented into 13 sections. Observation of butterfly dispersion and flight patterns revealed that butterflies tend to prefer prairie patches with Kincaid's lupine. As fragmentation increases the distance between lupine patches, the butterflies face habitat loss due to their lack of ability to fly from one patch to another.^[9] The increasing presence of anthropogenic structures, agriculture, and urbanization threatens habitat fragmentation, as roads can prevent movement and introduce mortality risk from vehicles.^[11]

Invasive plant species are also contributing to habitat destruction, such as Himalayan blackberry and Scotch broom.^[6] Both of these species thrive in the Kincaid's lupine environment and have the ability to overtake resources from the Kincaid's lupine.^[6] Invasive grasses contribute to habitat destruction due to its high obscuring Kincaid's Lupine.^[12] The invasive grasses have tall growth, which inhibits sunlight from reaching the lupine plants and wildflowers.^[5] Currently, only approximately 1% of the prairie land remains a suitable habitat. ^[13] Since 2000, conservation efforts have helped recover the grasslands in the Willamette Valley. ^[5]

Conservation

Fender's blue butterfly is a protected species in

Controlled burning of prairie habitats is practiced in the preserve to maximize butterfly population growth.[19] In October of 2006, approximately 3,010 acres of land in Oregon was legally determined to be a protected habitat for Fender's Blue Butterfly. ^[20] As of 2021, the protected habitat has seen an increase in restoration. ^[5] Various conservation agencies have also worked with private landowners, approximately 96% of the Willamette Valley, about utilizing their land for habitat restoration for Fender's blue butterfly.^[5]

References