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In response to the conditions of the environment, some mammals, such as bat delay the implantation due to the cold temperature in winter. [37] Another factor is due to the shortage of food stocks during winter as the insects are being driven away and as the result, bat hibernate in pregnant condition. [38]
The California slender salamander (Batrachoseps attenuatus) is a lungless salamander [2] that is found primarily in coastal mountain areas of Northern California, United States as well as in a limited part of the western foothills of the Sierra Nevada, California, in patches of the northern Central Valley of California, and in extreme southwestern Oregon.
Due to the extremely dry summer climate in coastal California and neighboring northwest Baja California, B. major (along with almost every other coastal California salamander) is only active above ground in the wetter winter months, typically from as early as October to as late as June. These salamanders are active near the surface when soil ...
It occurs at elevations up to 1000 m (3200 ft). Adults migrate at night from upland habitats to aquatic breeding sites beginning with the first major rainfall of fall and winter, and return to upland habitats after breeding. Historically, the California tiger salamander probably occurred in grassland habitats throughout much of the state.
The long-toed salamander (Ambystoma macrodactylum) is a mole salamander in the family Ambystomatidae. [2] This species, typically 4.1–8.9 cm (1.6–3.5 in) long when mature, is characterized by its mottled black, brown, and yellow pigmentation, and its long outer fourth toe on the hind limbs.
The California giant salamander is endemic to Northern California and lives up to 6,500 feet (2,000 m) primarily in damp, coastal forests including coast Douglas fir (Pseudotsuga menziesii var. menziesii) and California coast redwood (Sequoia sempervirens) in both montane and valley-foothill riparian habitats. They tend to be common where they ...
The Santa Cruz long-toed salamander (Ambystoma macrodactylum croceum) is an endangered subspecies of the long-toed salamander, which is found only close to a few isolated ponds in Santa Cruz and Monterey Counties in California. It has a black body, broken yellow or orange irregular striping along its spine, and a tail fin well evolved for swimming.
The lungless salamanders, in addition to having no lungs, have long slender snake-shaped bodies with very small limbs that appear almost vestigial in several species. [1] Their main diet consists of small insects, such as springtails, small bark beetles, crickets, young snails, mites, and spiders.