Question

How many FROGS have died each year in the past 7 years?

Answer 1

Bd may be responsible for the greatest disease-caused loss of biodiversity in recorded history (Skerratt et al. 2007). Over just the past 30 years, Bd has caused the catastrophic decline or extinction (in many cases within a single year) of at least 200 species of frogs, even in pristine, remote habitats (Skerratt et al. 2007). These rapid, unexplained declines have occurred around the world (e.g., Costa Rica: Crump et al. 1992, Lips 1998; Panama: Lips 1999, Lips 2003a, Lips 2003b, Lips 2006; Brazil: Heyer et al. 1988, Weygoldt 1989; Australia: Laurance et al. 1996). Recently Bd has been implicated in the unexplained disappearances of Central American salamanders as well (Rovito et al. 2009). While diseases have previously been associated with population declines and extinctions (Daszak et al. 2000), chytridiomycosis is the first emerging disease shown to cause the decline or extinction of hundreds of species not otherwise threatened (Skerratt et al. 2007). Currently over 350 amphibian species are known to have been infected by Bd (Fisher et al. 2009

Answer 2

Explanation:

Ironically--considering that they evolved over 300 million years ago and have survived, with various waxings and wanings, into modern times--amphibians are among the most threatened creatures on the earth today.