Olive ridley 是這裡最常見的海龜,但原來也有綠海龜罕有的在這裡下蛋,不過不是香港那種,是sub-species,與的香港不同~ 這隻綠海龜孵化期比較慢,還是逐隻出世的呢。 . . . Olive ridley is the common species to breed here, but there is another species - green turtle rarely breed here too! It is the sub-species of green turtle and is different from Hong Kong's green turtle. They hatched slower than olive ridley. Species: Pacific Green Turtle (Chelonia mydas agassizi)
不是每個海灘都有hatchery, 因此Red tortuguera 有一架車,變成了流動的hatchery。 車內十分熱,有40度高温。蛋從海灘拾回後就放進一個發泡膠箱,埋在沙裡。 龜蛋在海灘裡需要最少45日時間孵化,但在現在冬天季節,就需要多些時間了,大概75日,但若沙堆太凍蛋就會凍死了(温度低於24度)。因此會把一些在較北的沙灘找到的蛋放在這些發泡膠箱內,就不怕凍死啦。龜龜的性別取決於環境的温度,如高温過29度就是女仔,低温過29度就是男仔。那在發泡膠箱內就把温度維持於29度左右,男和女的機會率就是一半半。每天我們都到車內看看有沒有龜仔出世,如有便拿出來,會返回牠們的出生地放回海中。不過不是全都能成功孵出,也有不少壞蛋,或發育不良的龜仔,或在發育過程中死亡。1000隻龜仔只有1隻能長大成龜,因此培育龜蛋增加出生率也是其中一個保育方法。 Little baby Live and death P.S. Olive Ridley 被Redlist 評為vulnerable。數量下降中。 https://www.iucnredlist.org/species/11534/3292503 . . . Not all the beaches have a hatchery. So Red tortuguera bought a van and make it be a hatchery. Inside the van, the temperature is kept at 40 degree C. The eggs are taken from the beach will be put inside a styrofoam box with sand from that beach for artificial incubation. In nature, normally Olive Ridley needs 45 days to be hatched, but in winter time they take more time, may need up to 75 days. And if the sand is too cold (below 24 de...
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