Navigation Links
Changing ocean temperatures, circulation patterns affecting young Atlantic cod food supply
Date:6/20/2013

abitats in the ecosystem (1-4 C, 34-39 F) have either stayed the same or increased slightly during the study period 1982-2011. This discontinuity is attributed to changes in circulation in the northern Gulf of Maine associated with the Labrador Current.

Atlantic cod off the Northeast U.S. are managed as two stock units, the more northerly in the Gulf of Maine and the more southerly on and around Georges Bank. There are upward of ten known spawning populations within these two stocks, and the very young fish that they produce are found in specific larval development areas. Two zooplankton species that serve as food for Atlantic cod (Gadus morhua) larvae are Pseudocalanus spp, and Centropages typicus. The former is associated with winter-spawning cod, and the latter with spring-spawning cod.

The researchers developed indices of zooplankton and cod abundance in six index areas, relating larval feeding and development areas to associated areas where adults reside. They found that Pseudocalanus spp has declined in abundance on parts of Georges Bank and in the eastern Gulf of Maine, areas where cod have been less abundant in recent years. Centropages typicus declined in abundance in the eastern Gulf of Maine as well. The areas where these zooplankton species have declined are spatially discrete and are related to the change in core thermal habitat of the ecosystem.

The abundance of zooplankton species is measured by the NEFSC's Ecosystem Monitoring Program (EcoMon), which conducts shelf-wide bimonthly surveys of the ecosystem. Data and observations from the NEFSC's spring bottom trawl surveys were also analyzed.

Although the researchers concentrated on Atlantic cod recruitment success and population trends, many of the zooplankton species examined are important as prey for early life stages of other fish species and marine mammals. These zooplankton species are important within the Northeast Shelf ecosystem, and can serve as mod
'/>"/>

Contact: Shelley Dawicki
shelley.dawicki@noaa.gov
508-495-2378
NOAA Northeast Fisheries Science Center
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Costs for changing pollution criteria in Florida waters likely to exceed EPA estimates
2. Beating famine: Sustainable food security through land regeneration in a changing climate
3. Athletic frogs have faster-changing genomes
4. 50 years of bird poop links DDT with changing bird menus
5. University of Minnesota startup offers game-changing energy solutions that reduce CO2 emissions
6. Nitrogen pollution changing Rocky Mountain National Park vegetation, says CU-Boulder-led study
7. Deadly liver cancer may be triggered by cells changing identity, UCSF study shows
8. Back to the future: A new science for a changing planet
9. Satellite images tell tales of changing biodiversity
10. Did the changing climate shrink Europes ancient hippos?
11. Changing climate, not tourism, seems to be driving decline in chinstrap-penguin populations
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/17/2014)... for the first time how bacteria can grow directly ... the opportunity to get tremendous insights into bacteria behavior ... discovered the bacterial growth in chronic lung infections among ... by the immune cells. The researchers discovered the immune ... bacteria, forcing the bacteria to switch to a much ...
(Date:10/16/2014)... conventional thinking on how the bowel lining develops and, ... bowel cancer starts. , The researchers produced evidence that ... ,crypts, that are a feature of the bowel lining, ... cancer development, a controversial finding as scientists are still ... imaging technologies, Dr Chin Wee Tan and Professor Tony ...
(Date:10/15/2014)... Oct. 15, 2014 Sandata Technologies, LLC, ... and community-based care, today announced it released a ... Santrax® Electronic Visit Verification™ Solution (EVV™)  for Quality ... home health company founded in 1996 and has ... The study details the challenges ...
Breaking Biology News(10 mins):Scientists opens black box on bacterial growth in cystic fibrosis lung infection 2Cryptic clues drive new theory of bowel cancer development 2Sandata Announces Case Study with Quality Care Services, Inc. 2
... Taiwan and Japan and led by University of Illinois scientists ... times more active in killing tumor cells than similar drugs ... this week in the Journal of the American Chemical ... of drugs called bisphosphonates. These compounds were originally developed to ...
... Researchers at the Tulane University School of Medicine, ... protease inhibitors (PIs), such as nelfinavir included in ... treatment of HIV-1 patients, induce deleterious effects on ... They report a significant decrease in the levels ...
... researcher has discovered dozens of species of jumping spiders that ... section of the evolutionary tree previously thought to be sparse. ... world except Antarctica. Capable of jumping 30 times their body ... households. They come in many shapes and sizes, some resembling ...
Cached Biology News:New drug agent knocks out multiple enzymes in cancer pathway 2HIV-1 protease inhibitor induced oxidative stress in pancreatic B-cells: thymoquinone protection 2New species of spiders discovered by UBC scientist in Papua New Guinea 2
(Date:10/25/2014)... 2014 ViaDerma, Inc ... devoted to bringing new products to market, is ... ViaDerma has developed an innovative, patent-pending dual carrier ... transfer of pharmaceutical active ingredients to penetrate the ... localized therapy. The transdermal delivery method also overcomes ...
(Date:10/25/2014)... (PRWEB) October 24, 2014 This ... PHA, PBS, Starch Based Plastics, Regenerated Cellulose, PCL), ... Global Trends and Forecasts to 2019”, defines and ... analysis and forecast of its global volume and ... 54 Figures spread through 178 Slides and in-depth ...
(Date:10/25/2014)... 24, 2014 Oramed Pharmaceuticals Inc. ... focused on the development of oral drug delivery systems, ... will present at FireRock Capital,s Micro-Cap Conference. ... Conference ,Date: Tuesday, October 28, 2014 ,Time: 9:15am EST ... York City , About The ...
(Date:10/25/2014)... 24, 2014 ... has announced the addition of the  "The ... Other 2-D Nanomaterials "  report to their ... ,CNTs and graphene are the strongest, lightest ... with a performance-per-weight greater than any other ...
Breaking Biology Technology:ViaDerma, Inc. Announces Plans to Pursue Out-Licensing Partnerships in 2015 2ViaDerma, Inc. Announces Plans to Pursue Out-Licensing Partnerships in 2015 3Biodegradable Plastics Market Projected to $3,476.87 Million by 2019 - Report by MarketsandMarkets 2Biodegradable Plastics Market Projected to $3,476.87 Million by 2019 - Report by MarketsandMarkets 3Biodegradable Plastics Market Projected to $3,476.87 Million by 2019 - Report by MarketsandMarkets 4Oramed to Present at the FireRock Annual Micro-Cap Conference 2Oramed to Present at the FireRock Annual Micro-Cap Conference 3The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 2The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 3The Global Market for Carbon Nanotubes, Graphene and Other 2-D Nanomaterials 4
... , Key ... assay, , ... of one assay component to an SPA Imaging Bead in order to ... antibody enable the immobilization of rabbit secondary antibodies during the assay. The ...
... TE 70, TE 77, TE 70 PWR, TE 77 PWR , ... transfer results using low current and voltage with a minimal amount of buffer. ... with and without built-in power supplies to give maximum flexibility , ... from polyacrylamide gels in less than 1 h , ...
... Key words: ... LC-MS/MS • reversed-phase chromatography (RPC) • strong cation exchange (SCX) ... , ... brain tissue. The trypsin-digested tissue was separated by strong cation ...
Cached Biology Technology:Utilization of Donkey Anti-Rabbit PS SPA Imaging Beads in the quantitative measurement of cAMP in cells 2Utilization of Donkey Anti-Rabbit PS SPA Imaging Beads in the quantitative measurement of cAMP in cells 3Utilization of Donkey Anti-Rabbit PS SPA Imaging Beads in the quantitative measurement of cAMP in cells 4ECL Semi-dry Blotters 22D-LC analysis of phosphopeptides in brain tissue using Ettan MDLC and Finnigan LTQ 22D-LC analysis of phosphopeptides in brain tissue using Ettan MDLC and Finnigan LTQ 32D-LC analysis of phosphopeptides in brain tissue using Ettan MDLC and Finnigan LTQ 42D-LC analysis of phosphopeptides in brain tissue using Ettan MDLC and Finnigan LTQ 52D-LC analysis of phosphopeptides in brain tissue using Ettan MDLC and Finnigan LTQ 6