北方蝦(panaslus borealis) 在海洋底部。
據(jù)5月8日的《科學(xué)》雜志報(bào)道說(shuō),，北方蝦就是那種人們可能在沙拉中看到的體型小并帶有甜味的蝦,。這種蝦用溫度作為其產(chǎn)卵的提示信號(hào)，因此它可能會(huì)受到氣候變化的嚴(yán)重威脅,。
根據(jù)一則相關(guān)的Perspective披露,，北方蝦（學(xué)名：Pandalus borealis）占了每年捕獲的50萬(wàn)噸冷水域蝦中的大約70%,。 這些蝦一般被看作是其它類(lèi)型的養(yǎng)殖或在較溫暖水域中拖網(wǎng)捕撈的蝦的一種更有持續(xù)性的替代品種。 Peter Koeller及其同僚在一項(xiàng)新的研究中對(duì)該種蝦卵的孵育時(shí)間進(jìn)行了估測(cè),，并將其與當(dāng)?shù)氐拇杭驹迦A（這是該種蝦的蝦苗的一種食物來(lái)源）時(shí)間進(jìn)行了比較,。 他們報(bào)告說(shuō)，這種蝦的繁殖周期與該藻華的時(shí)間有著精確的匹配,。 但是,，該水藻本身并不會(huì)觸發(fā)蝦的產(chǎn)卵，實(shí)際情況是,，雌性蝦只是對(duì)當(dāng)?shù)睾Ｑ蟮撞康乃疁刈龀龇磻?yīng),。
長(zhǎng)期以來(lái)，水溫與水藻開(kāi)花的時(shí)間一般都匹配得很好,。因此,，文章的作者得出結(jié)論：這種蝦的進(jìn)化是為了利用這一匹配。 但是,，這一進(jìn)化策略卻使得這種蝦對(duì)年復(fù)一年的局部溫度變化或藻華的時(shí)間變得非常敏感,，而這2種因素會(huì)隨著全球氣候變化的進(jìn)展而會(huì)變得日益常見(jiàn)。（生物谷Bioon.com）
生物谷推薦原始出處：
Science 8 May 2009:DOI: 10.1126/science.1170987
Basin-Scale Coherence in Phenology of Shrimps and Phytoplankton in the North Atlantic Ocean
P. Koeller,1,* C. Fuentes-Yaco,1,2 T. Platt,1,3 S. Sathyendranath,1,2,3 A. Richards,4 P. Ouellet,5 D. Orr,6 U. Skúladóttir,7 K. Wieland,8 L. Savard,5 M. Aschan9
Climate change could lead to mismatches between the reproductive cycles of marine organisms and their planktonic food. We tested this hypothesis by comparing shrimp (Pandalus borealis) egg hatching times and satellite-derived phytoplankton bloom dynamics throughout the North Atlantic. At large spatial and long temporal (10 years or longer) scales, hatching was correlated with the timing of the spring phytoplankton bloom. Annual egg development and hatching times were determined locally by bottom water temperature. We conclude that different populations of P. borealis have adapted to local temperatures and bloom timing, matching egg hatching to food availability under average conditions. This strategy is vulnerable to interannual oceanographic variability and long-term climatic changes.
1 Department of Fisheries and Oceans, Bedford Institute of Oceanography, Post Office Box 1006, Dartmouth, B2Y 4A2 Nova Scotia, Canada.
2 Dalhousie University, Halifax, B3H 4R2 Nova Scotia, Canada.
3 Plymouth Marine Laboratory, Prospect Place, PL1 3 Plymouth, UK.
4 Northeast Fisheries Science Center, National Marine Fisheries Service, 166 Water Street, Woods Hole, MA 02543-1026, USA.
5 Pêches et Océans Canada, Institut Maurice-Lamontagne, 850 Route de la Mer, Caisse Postale 1000, Mont-Joli, G5H 3Z4 Québec, Canada.
6 Department of Fisheries and Oceans, Northwest Atlantic Fisheries Centre, Post Office Box 5667, St. John’s, A1C 5X1 Newfoundland, Canada.
7 Marine Research Institute, Post Office Box 1390, Skúlagata 4, 121 Reykjavik, Iceland.
8 National Institute of Aquatic Resources, Technical University of Denmark, Post Office Box 101, DK-9850 Hirtshals, Denmark.
9 Norwegian College of Fisheries Science, University of Troms?, N-9037 Troms?, Norway.
