Foothill yellow‑legged frog

Foothill Yellow-legged Frog (Rana boylii)Ecology. Foothill yellow-legged frogs were historically found in the majority of Pacific drainages west of the Cascade Mountain crest from Marion County, Oregon to Los Angeles County, California, and was considered one of the most abundant amphibians in the area. In December 2016, the Center for … The river-dwelling foothill yellow-legged frog (Rana boylii) is currently a species of special concern in California, and has declined from over 50 percent of its historic range (Davidson et al. The Foothill Yellow-legged Frog (Rana boylii) is a small-sized (3.72-8.2 cm) frog from the Rana genus in the Ranidae family.This species can be found from northern Oregon, down California’s west coast, and into Baja California, Mexico.Both the Columbia Spotted Frog and the Cascades Frog, also part of the Rana genus, live in the northern regions of this frog's territory. Historically, foothill yellow-legged frogs (Rana boylii) ranged throughout much of southwestern Oregon (west of the crest of the Cascade Mountains).

We collected data during six breeding-seasons (2002-2007) along an unregulated stream in northwestern California. Gary M. Fellers 1. Today, these frogs are unevenly …

Foothill Yellow-Legged Frog. In California, foothill yellow-legged frogs were found in most of the …

The northernmost records are from the Santiam River system in Marion County, Oregon. Scientific Classification; Quick Information; Kingdom: Animalia: Phylum: Chordata: Class: Amphibia: Order: Anura: Family: Ranidae: Genus: Rana: Scientific Name: Rana boylii: Size : 1.45-3.23 …

The foothill yellow-legged frog has a mottled body and it can release chemicals to protect itself from predators. Improper stream management may lower egg mass survival and reduce the availability of suitable breeding habitats.

2002, Lind 2005).Research on the ecology of R. boylii has increased our understanding of the habitat requirements (Kupferberg 1996, Yarnell 2005, Lind 2005, Haggarty … The state Fish and Game Commission on Wednesday approved protections for five of six populations of the foothill yellow-legged frog.

foothill yellow-legged frogs in southern California, an acute die-off in 2013 in the Alameda Creek watershed, and another in 2018 in Coyote Creek (Adams et al.

The Foothill Yellow-legged Frog (Rana boylii) has declined across much of its native range in California.

They prefer to live in streams and … Historical versus Current Distribution.

Bd is likely present in the environment throughout the foothill yellow-legged frog’s range, and with bullfrogs and treefrogs acting as carriers, it will remain a threat to the species; however, given the … The frog does not have a specific breeding season, as it can postpone mating if conditions are not conducive. 2017a,b; Kupferberg and Catenazzi 2019).

1. Recently, however, the abundance and distribution status of this species has significantly declined. They can be found in a variety of habitat types such as chaparral, oak woodland, mixed coniferous forest, riparian sycamore and cottonwood forest, as well as wet meadows. The Foothill Yellow-legged Frog (Rana boylii) inhabits lower elevation creeks, streams and rivers throughout the Klamath, Coast, Sierra Nevada and formerly the Transverse ranges of California.