[WORLDKINGS] The Constant World Records Seeking Journey (P.270) Black alpine salamanders: Amphibian species has longest gestation period in the world

22-03-2022

(worldkings.org) Generally, at altitudes of 650-1,000 m above sea level, a pregnancy lasts two years, and at altitudes of 1,400-1,700 m, the pregnancy lasts around three years (1,140 days). On March 22nd, 2022, World Records Union (WorldKings) officially declared Black alpine salamanders as “Amphibian species has longest gestation period in the world”.

Based on the world record nomination from Europe Records Institute (EURI) and Decision No. WK/USA.INDIA/824/2022/No.280, World Records Union (WorldKings) officially Black alpine salamanders as on March 22nd, 2022.

The alpine salamander (Salamandra atra) is a shiny black salamander found in the Alps from the Swiss-French border at the western end of its range  through Austria to the Dinaric Alps at the eastern end of its range, at altitudes above 700 m.

Their life expectancy is at least 10 years. Unlike other salamanders, whose larvae are developed in water, the alpine salamander is a fully terrestrial species. Capture-recapture methods suggest that the species is very stationary; 12 m (39 ft) was the maximum observed distance travelled by one individual during the summer season. About 120 individuals per hectare were counted in most suitable areas with >2000 individuals/ha also observed, suggesting that this rather cryptic species is quite abundant.

Total length is up to 144 mm for males, up to 151 mm for females. Slightly elongated head, with two large kidney-shaped paratoid glands. The body has 11-13 costal grooves on either side. The tail is square in cross-section. One double row of poison glands runs down the center of the back. One single row of poison glands runs along either side of the body onto the tail. Usually black or brown-black, but the subspecies Salamandra atra aurorae has a bright coloration on the head, back, and dorsal side of the extremities. This coloration can consist of continuous patches or be spotted or blotched. It can vary in color from whitish or yellow to greenish or gray. Males have a slightly more pronounced cloaca than females.

According to en. wikipedia


Brian (Collect & Edit) - WORLDKINGS (Source of photos : internet )

 

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