Hope for Endangered Butterfly Species

http://animalzoon.blogspot.in/

The brown-and-yellow insect, which graced a stamp in 1996 to reflect its endangered status, has been hard to locate lately.

Sightings of the Schaus have fluctuated dramatically over the past 20 years, from the hundreds to the dozens. In recent years, habitat loss, drought, and pesticides have contributed to a precipitous drop in sightings, from 41 in 2011 to four in 2012.

Currently, the butterfly is believed to live only in a small patch of forest called tropical hardwood hammock, dense with evergreens and ferns, on Elliot Key in the Florida Keys. The U.S. Fish and Wildlife Service listed the Schaus as endangered in 1984.

Now the butterfly's odds of survival are improving, thanks to researchers from the University of Florida, the National Park Service, the Florida Fish and Wildlife Conservation Commission, the U.S. Fish and Wildlife Service, and the North American Butterfly Association.

This spring, the researchers collected seven larvae and more than a hundred eggs to store for breeding the Schaus next year. Collecting eggs is critical—the Schaus, unlike other butterflies, lays eggs only once a year, which makes it harder for the species to rebound.

The eggs and larvae are being stored in the lab of Jaret Daniels, an assistant professor in the University of Florida's Department of Entomology and Nematology, and an associate curator of lepidoptera (moths and butterflies) for the university's Florida Museum of Natural History. Daniels hopes to raise the larvae and eggs to maturity in his lab, then breed more Schaus butterflies to bolster the population.

Monarch Butterflies Hit New Low; "Worrisome" Trend

Monarch Butterflies Hit New Low; "Worrisome" Trend

http://animalzoon.blogspot.in/

             The king of the butterflies may reign no more: Monarch butterflies are experiencing a steady decline, a new report says, with the insects occupying the smallest area of land in one Mexican butterfly reserve than they have in two decades.In December 2012, scientists surveying monarch habitat in Mexico's Monarch Butterfly Biosphere Reserve found the insects occupied 59 percent less land than the previous year—the smallest area recorded in 20 years. (Watch a video of monarch butterflies.)Nine butterfly colonies were found in just 2.94 acres (1.19 hectares) of land, compared with 7.14 acres (2.89 hectares) in 2011 and a high of 44.9 acres (18.19 hectares) in 1997, according to the report, released March 13.vThe insects are plummeting due to two main causes: widespread loss of a plant called milkweed, which their young rely on for food; and extreme climate fluctuations, including freezing temperatures and heavy rain.)