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カテゴリー「品種研究」の記事一覧

棘足陸寄居蟹(Coenobita spinosus)的幼體? Juvenile of Coenobita spinosus?

找到以下照片, 這幼體不太像棲身於關島的品種, 如灰白陸寄居蟹(Coenobita rugosus), 橙紅陸寄居蟹(Coenobita perlatus), 短腕陸寄居蟹(Coenobita brevimanus).

這會不會很有機會是棘足陸寄居蟹(Coenobita spinosus)的幼體? 隨著身體長大, 體色會漸漸變成紅豆至褐色?
https://www.instagram.com/p/BGf-zlUCIlX/

因為看不到左螯......或許只是灰白陸寄居蟹(Coenobita rugosus)的幼體, 現在對棘足陸寄居蟹(Coenobita spinosus)這品種的資料實在太少.


Image from below instagram, this young crab do not like other speices that can found in Guam, such as Coenobita rugosus, Coenobita perlatus and also Coenobita brevimanus.

So is it possible this one is juvenile of Coenobita spinosus, when they group up, they will become dark red to brown?
https://www.instagram.com/p/BGf-zlUCIlX/

As cannot see clearly the big claw, may be this one is juvenile of Coenobita rugosus, there are still little information about Coenobita spinosus.

橙紅陸寄居蟹(Coenobita perlatus)的幼體? Juvenile of Coenobita perlatus?

之前都是找到照片.

這次找到片段. 重點是左下角細小的個體, 斑紋呈褐色, 不是呈橙色, 這也會是橙紅陸寄居蟹(Coenobita perlatus)的幼體? 
https://www.instagram.com/p/BEcwd9GgX14/

更詳細的可參考以下文章:
http://www.tonycoenobita.com/CommentOnSpeciesDelimitationByTony_TradChi2.pdf


Found a movie from instagram, please see the crab at left corner with dark brown transverse band on the walking leg, is this crab juvenile of Coenobita perlatus?

https://www.instagram.com/p/BEcwd9GgX14/

Coenobita pseudorugosus update news (English)

Got a reply from David Barnes, author of < Ecology of subtropical hermit crabs in SW Madagascar: Refuge-use and dynamic niche overlap, 2002 > and thank you to him to share the images of Coenobita pseudorugosus with me.

Coenobita pseudorugosus in SW Madagascar are very similar to Coenobita rugosus, the easiest way to separate them is left cheliped of Coenobita pseudorugosus is 5 sided and Coenobita rugosus is 4 sided according to David Barnes. 

In SW Madagascar, colour of Coenobita pseudorugosus is typically lighter. Their habitat, behavior and morphology are different with Coenobita rugosus.

For the images, please see below link:
http://www.tonycoenobita.com/coenobita_pseudorugosus_2016_eng.htm

Coenobita pseudorugosus update news (中文)

收到了< Ecology of subtropical hermit crabs in SW Madagascar: Refuge-use and dynamic niche overlap, 2002 > 著作者David Barnes的回覆, 感謝他和我分享Coenobita pseudorugosus的照片.

SW馬達加斯加的Coenobita pseudorugosus和灰白陸寄居蟹(Coenobita rugosus)十分接近, 跟據David Barnes的說法, 最容易分別牠們是Coenobita pseudorugosus的左螯腳呈五角形, 灰白陸寄居蟹(Coenobita rugosus)的左螯腳呈四角形.

在SW馬達加斯加, Coenobita pseudorugosus的體色通常較淺, 牠們的棲身地, 行為不同, 於形態學上也和灰白陸寄居蟹(Coenobita rugosus)有所不同.


請進入以下網址看照片:
http://www.tonycoenobita.com/coenobita_pseudorugosus_2016_ch.htm

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