Posts Tagged ‘Ponds’
Thursday, February 9th, 2012
Triturus Cristatus is one of those species normally called a newt. Although it may be almost totally aquatic in some parts or its range, it is best known for entering breeding ponds in the spring after spending a period of hibernation in a deep cavity during the winter. The breeding season varies with the part of the range, but in central Europe the newts enter the breeding ponds in about mid-March.
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Tags: Cavity, Central Europe, Chichen Itza, Hibernation, Life History, Mexico, Mid March, Nbsp, Newt, Newts, Ponds, Puerto Morelos, Wedding Catering, Winnipeg
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Friday, January 20th, 2012
His mate can have access to the sperm packet. Lying quietly, the male allows her to maneuver her vent over the sperm packet and take it up in the lips of her cloaca. The mating process takes approximately half an hour, after which the female is released by the male and both go their separate ways.
The time from fertilization to the birth of the larvae is about ten months. Sometimes the sperm packet may be retained in the cloaca for several months, even though the winter, so that eggs may be fertilized at a more favorable time. The larvae develop full term in the eggs while still in the body of the parent, who will seek out a suitable body of water as soon as birth becomes imminent. Only cool streams and ponds in half shadow are selected. The female will search for a suitable shallow spot into which she can release up to 50 hatching eggs or newly hatched larvae. In certain cases, especially in the southern part of the range or where free water is scarce, the larvae may be retained right through metamorphosis and tiny replicas of the adults may be deposited.
At birth, the larvae are about 2.5 cm (1 in) in length and are colored somewhere between yellowish gray and brownish black. The body is usually speckled with little yellow spots, with a larger one at the base of each leg; the latter spot is a trademark of S. salamandra larvae and is not present in the larvae of related species.
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Tags: Body Of Water, Cloaca, Dental Clinic, Favorable Time, Fertilization, Free Water, Half An Hour, Hatching Eggs, Larvae, Lips, Mate, Metamorphosis, Ponds, Puerto Morelos, Replicas, Salamandra, Separate Ways, Streams, Suitable Body, Vent
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Monday, January 16th, 2012
Most species have glands in the skin that will release poisonous or irritant substances in times of danger. It is therefore advisable to wash your hands each time after handling salamanders, as these substances, if transferred to the eyes or mucous membranes, can cause severe pain, irritation, and inflammation.
As the winter approaches, in most parts of its range T. cristatus will prepare for its winter hibernation, a period that is important to prepare it for the forthcoming breeding season. The newts burrow, deeply into the earth, often using tree roots of the burrows of other animals, until they reach a depth that will remain frost-free throughout the winter. Before hibernating, it is important that the newts have built up their fat reserves by consuming large quantities of insects. (Species from temperate areas may be kept in captivity without hibernation by simply keeping them warm, but such specimens are less likely to breed in the spring and their life spans will be somewhat shortened.) In the spring, as soon as the rays of the sun begin to warm up the surface, the newts will wake up and make their way to the breeding ponds. Young T. cristatus do not normally breed until they are in their second season.
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Tags: Burrow, Burrows, Captivity, Glands, Hibernating, Inflammation, Irritant Substances, Life Spans, Newts, Ponds, Protective Barrier, Rays Of The Sun, Salamanders, Second Season, Severe Pain, Specimens, Temperate Areas, Times Of Danger, Tree Roots, Winter Hibernation
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Sunday, December 12th, 2010
Emerging from streams and ponds some 365 million years ago, the reptile ancestors established a beachhead during the Upper Devonian and eventually gave rise to myriad bizarre creatures, from gopher-sized cotylosaurs to the schooner-sized Brontosaurus. While many returned to the water, a few took to the air. But most remained on land to dominate the earth for some 200 million years.
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