北方虾(panaslus borealis) 在海洋底部。
据5月8日的《科学》杂志报道说，北方虾就是那种人们可能在沙拉中看到的体型小并带有甜味的虾。这种虾用温度作为其产卵的提示信号，因此它可能会受到气候变化的严重威胁。
根据一则相关的Perspective披露，北方虾（学名：Pandalus borealis）占了每年捕获的50万吨冷水域虾中的大约70%。 这些虾一般被看作是其它类型的养殖或在较温暖水域中拖网捕捞的虾的一种更有持续性的替代品种。 Peter Koeller及其同僚在一项新的研究中对该种虾卵的孵育时间进行了估测，并将其与当地的春季藻华（这是该种虾的虾苗的一种食物来源）时间进行了比较。 他们报告说，这种虾的繁殖周期与该藻华的时间有着精确的匹配。 但是，该水藻本身并不会触发虾的产卵，实际情况是，雌性虾只是对当地海洋底部的水温做出反应。
长期以来，水温与水藻开花的时间一般都匹配得很好。因此，文章的作者得出结论：这种虾的进化是为了利用这一匹配。 但是，这一进化策略却使得这种虾对年复一年的局部温度变化或藻华的时间变得非常敏感，而这2种因素会随着全球气候变化的进展而会变得日益常见。（生物谷Bioon.com）
生物谷推荐原始出处：
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.
