Download e-book for kindle: Beacham's Guide to the Endangered Species of North America by Beacham W., Castronova F.V., Sessine S.

By Beacham W., Castronova F.V., Sessine S.

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S. Fish and Wildlife Service. Reproduced by permission. darkly-pigmented testes with one to three lobes. Laboratory studies suggest that the salamanders breed in June and possibly again in the fall. Salamanders had the following four classes of ova in the oviducts: very small clear ova, small opaque-white ova, small yellow ova, and large yellow ova. Females carrying large yellow ova are considered gravid and presumably ready for oviposition. 5 cm) total length. 5 cm) carried one to 19 large yellow ova.

Flatwoods Salamander Ambystoma cingulatum Status Listed Family Description Habitat Food Reproduction Threats Range Threatened April 1, 1999 Ambystomatidae Slender, small-headed mole salamander, black to chocolate-black in color dorsally. Open, mesic woodland of longleaf/slash pine flatwoods maintained by frequent fires. Invertebrates. Larvae metamorphose in March or April. Loss of habitat due to land conversion; forest management practices; predation from fish; pesticides; herbicides; droughts; floods.

Following the same procedure, a survey published in 1993 estimated that the mats were inhabited by about 23,000 salamanders. Also published that year, an additional search of rocky susbtrates around the spring openings throughout Spring Lake located an estimated 25,000 salamanders. At the time, estimates of the population below Spring Lake associated with the rocky substrate were calculated to be approximately 5,000 individuals. The total population estimates from these combined studies stood at 53,200 for Spring Lake in 1993, and some of these estimates, notably the rocky substrate figures, were thought to be low.

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Beacham's Guide to the Endangered Species of North America by Beacham W., Castronova F.V., Sessine S.

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