文字說(shuō)明: 6個(gè)曾未知的游動(dòng)種類(lèi)的acrocirrid polycheate蠕蟲(chóng)被發(fā)現(xiàn)予太平洋深海處,。
資料來(lái)源: Karen J. Osborn
據(jù)8月21日的《科學(xué)》雜志報(bào)道說(shuō)，研究人員已經(jīng)發(fā)現(xiàn)了數(shù)種深海蠕蟲(chóng)的新物種,，它們會(huì)釋放出極小的氣球樣的構(gòu)造，這些構(gòu)造一旦脫離這些蠕蟲(chóng)的身體,，它們就會(huì)開(kāi)始發(fā)出一種鮮亮的綠色,。
Karen Osborn及其同僚在一篇Brevium中報(bào)告說(shuō)，這些發(fā)光的“炸彈”可能起到讓捕食者分心的作用,，而蠕蟲(chóng)可乘機(jī)逃跑,，這與烏賊釋放黑墨相似。 研究人員是通過(guò)遙控的潛艇在深海潛水的時(shí)候發(fā)現(xiàn)這些蠕蟲(chóng)的,，其位置在菲律賓的海岸之外以及美國(guó)和墨西哥的西海岸,。 他們一共發(fā)現(xiàn)了7種新的物種，其中有5種會(huì)釋放出這些不尋常的“炸彈”,。 有4個(gè)物種生活在靠近海底的地方,，它們當(dāng)中有3種生活在水柱的更高處。 它們?nèi)慷紭O其擅長(zhǎng)游泳,，它們用其長(zhǎng)長(zhǎng)的剛毛形成的扇狀物作為其游泳的劃槳,。 文章的作者說(shuō)，他們的發(fā)現(xiàn)給人們一個(gè)重要的提醒,，即我們現(xiàn)在對(duì)海洋深處是多么的無(wú)知,。（生物谷Bioon.com）
生物谷推薦原始出處：
Science 21 August 2009:DOI: 10.1126/science.1172488
Deep-Sea, Swimming Worms with Luminescent "Bombs"
Karen J. Osborn,1,* Steven H. D. Haddock,2 Fredrik Pleijel,3 Laurence P. Madin,4 Greg W. Rouse1
By using remotely operated vehicles, we found seven previously unknown species of swimming annelid worms below 1800 meters. Specimens were large and bore a variety of elaborate head appendages. In addition, five species have pairs of ellipsoidal organs homologous to branchiae that produce brilliant green bioluminescence when autotomized. Five genes were used to determine the evolutionary relationships of these worms within Cirratuliformia. These species form a clade within Acrocirridae and were not closely related to either of the two known pelagic cirratuliforms. Thus, this clade represents a third invasion of the pelagic realm from Cirratuliformia. This finding emphasizes the wealth of discoveries to be made in pelagic and deep demersal habitats.
1 Scripps Institution of Oceanography, La Jolla, CA 92093, USA.
2 Monterey Bay Aquarium Research Institute (MBARI), Moss Landing, CA 95039, USA.
3 Department of Marine Ecology - Tj?rn?, University of G?teborg, SE 452 96 Str?mstad, Sweden.
4 Woods Hole Oceanographic Institution (WHOI), Woods Hole, MA 02543, USA.
