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Wild Things in Your Woodlands

机译:林地里的野物

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The spotted salamander is relatively common and widespread in New York State. Spotted salamanders are most noticeable in the early spring for a short period of time when they congregate in large numbers to breed. During this explosive breeding period,which usually occurs in March or early April, spotted salamanders may be seen at night making mass migrations toward nearby pools and ponds. The breeding migration generally is triggered by the first warm, steady spring rains, even if there is snow remaining on the ground. The males, who often arrive first, begin swimming about in a highly active state that becomes nearly a frenzy when females arrive in the pond to mate. During courtship and mating, adult male spotted salamanders deposit gelatinous white sperm packets on sticks or on the bottom of the pond. These packets are very easy to spot and serve as the first clue that spotted salamanders are present in a pool or pond. A female will swim over the packet and take up the sperm into her cloaca. Within one to a few days, the female lays eggs in gelatinous masses of usually 100 to 200 eggs, attaching the egg clusters to aquatic vegetation or sticks. Eggs usually take from 30 to 50 days to hatch, dependingon the temperature of the water. The new hatchling starts out as an elongate tadpole, with external gills near the neck region, and short buds in place of front limbs. As the tadpole develops, toes form on the front feet, rear legs sprout near the base of the tail, and it ultimately loses its gills and tail fin, all in preparation for life on land.
机译:斑点sal在纽约州相对普遍,分布广泛。当sal聚集在一起繁殖时,发现的spring在短时间内最显着。在这种爆炸性繁殖期(通常发生在3月或4月初),晚上可能会看到斑点的sal,使它们大量迁移到附近的水池和池塘。即使在地面上积雪,通常是由第一个温暖,稳定的春季降雨触发繁殖迁移。雄性通常最先到达,开始以高度活跃的状态游泳,雌性到达池塘交配时几乎变得疯狂。在求偶和交配期间,成年雄性斑点sal将胶状的白色精子小包沉积在木棍上或池塘的底部。这些小包很容易发现,并作为池或池塘中出现spot的第一个线索。雌性将游过小包,将精子带入泄殖腔。雌性在一到几天之内就产下通常为100至200个卵的凝胶状卵,将卵簇附着在水生植物或木棍上。鸡蛋通常需要30到50天才能孵化,具体取决于水温。新的孵化开始时是一个细长的t,脖子附近有外external,前肢代替了短芽。随着the的发展,脚趾在前脚上形成,后腿在尾巴的根部附近发芽,最终失去和尾鳍,为陆地上的生命做准备。

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