EXECUTIVE SUMMARY The Endangered Species Act of 1973 (ESA) employs a two-category system: listing species either as endangered (in danger of extinction throughout all or a significant portion of its range) or threatened (likely to become endangered in the foreseeable future). Absence of Congressional guidance on how to interpret the terms used in the statutory definitions of these categories ha...

SUMMARY: We (NMFS and USFWS; also collectively referred to as the Services) have determined that the loggerhead sea turtle (Caretta caretta) is composed of nine distinct population segments (DPSs) that qualify as ''species'' for listing as endangered or threatened under the Endangered Species Act (ESA), and we propose to list two as threatened and seven as endangered. This also constitutes the ...

Next year is International Year of Biodiversity but the latest report last month from the International Union for the Conservation of Nature (IUCN) marks a grim introduction to the year with growing numbers of species under threat. The Red List of Endangered Species is the world's most comprehensive information source on the global conservation status of plant and animal species with much infor...

—Yaqui topminnow Poeciliopsis occidentalis sonoriensis and Yaqui chub Gila purpurea, two federally endangered fishes from the Rio Yaqui basin (Arizona, USA, and Sonora, Mexico), were propagated by various methods. Propagation of Yaqui topminnow was attempted in aquaria and wading pools; the greatest number of offspring was produced in 556-L, plastic wading pools. We added substrate, artificial ...

Thirty endangered plants of Assam are mentioned in this report. Some measures to ward off the threat are also suggested.

A new species of Roupala, Roupala gertii from the endangered Atlantic coastal forests of Brazil is described and illustrated.