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Sponge crab successfully bred in museum species recovery program

Sponge crab successfully bred in museum species recovery program

2023-03-17

Some great news from a Taiwanese breeding program for crabs! A baby sponge crab has successfully grown to maturity at the National Museum of Marine Science and Technology. The baby crab hatched in December along with tens of thousands of siblings. But very few sponge crabs make it to maturity. Conservation experts are delighted to see one make it successfully into life, in a first for Taiwanese species recovery projects. We head now to the museum to meet the little crab, as well as some of its underwater friends.

This fluffy baby sponge crab is tiny, but it’s carrying something on its back.

Voice of NMMST employee
They carry these heavy things on their backs, to camouflage themselves. It’s so small, but it’s got a sponge on its back. When it’s grown bigger, it will carry a shell.

This species of sponge crab has the scientific name Lauridromia dehaani. It’s also known as “the weightlifter of the sea.” This little baby was born in December as part of a painstaking species recovery program at the National Museum of Marine Science and Technology. The chances of a sponge crab fertilized by artificial methods to successfully hatch and grow into an adult crab, are 1 in 10,000.

Kai Yu-hsuan
National Museum of Marine Science and Technology
We probably had several tens of thousands of crabs that hatched in mid-December. But that number went down through the maturing process, and in the end we have been very lucky to successfully breed one crab.

The museum is also working hard to breed clownfish and horseshoe crabs from Kinmen – as well as this eye-catching beast.

Tsai Yu-hung
National Museum of Marine Science and Technology
The scales all stick together, unlike most fish, which have separated scales. It’s like a set of armor, giving protection. It has very prominent teeth, like an alligator.

Pearly white all over, with scales and teeth more like a crocodile than a fish, this alligator gar is an aggressive invasive species in Taiwan. It’s also known as a “living fossil.”

Tsai Yu-hung
National Museum of Marine Science and Technology
We took this individual in for adoption. He was donated by a member of the public. It’s a good species to exhibit as an example of an invasive species, and we can also protect it, study it, and use it for educational purposes.

The museum is devoted to ecosystem restoration as well as conserving many different types of sea creatures, providing opportunities for visitors to meet and study marine life, and bringing humans closer to the ocean.

海中舉重選手! 海科館成功繁殖"漢氏勞綿蟹"

2023-03-17

國立海洋科技博物館的復育基地,傳出喜訊!”綿蟹卵”孵化後,從原本的上萬隻,慢慢減少,最後只留下一隻小綿蟹,經過1個月的照顧,狀況趨於穩定。海科館表示,這是台灣人工繁殖的首例,除了綿蟹外,目前也致力於小丑魚、鱟魚的復育工作。

小綿蟹全身毛茸茸,背上還揹著東西。

[[聲音來源:海科館研究人員]]
“習性就是牠要揹著重物,重物會去偽裝牠自己,牠這麼小,揹的是一個小海綿,長大之後牠會揹貝殼”

綿蟹,學名叫做漢氏勞綿蟹,有海中舉重選手的稱號,而眼前這隻小綿蟹,海科館好不容易才在去年12月成功復育,人工繁殖能活下來,機率只有萬分之一。

[[海科館產學交流組博士蓋玉軒]]
“12月中旬孵化出來的時候,其實大概有幾萬隻以上,但是在育成的過程中慢慢減少,最後我們很幸運的成功(孵育)了一隻”

除了綿蟹,小丑魚,來自金門的鱟,也是復育重點。而場內超吸睛的還有這隻。

[[海科館產學交流組研究人員蔡宇鴻]]
“鱗片,這鱗都黏在一起了,不像一般的魚是一片一片,像盔甲一樣的保護,很明顯和鱷魚一樣的牙齒”

全身白得透亮,還有鱷魚般的鱗片和牙齒,牠叫做錘骨雀鱔,是隻兇猛的外來種,還是活化石。

[[海科館產學交流組研究人員蔡宇鴻]]
“我們這隻是收容來的,這是民眾捐贈的,因為牠本身有外來種的展示效果,保育跟學習宣導的效果”

不只專注生態復育,海科館也致力於保存各種品種的海生動物,提供觀賞與教學,讓民眾能了解更多生態知識。

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