Navigation Links
Archaeological study shows human activity may have boosted shellfish size
Date:8/31/2010

In a counter-intuitive finding, new research from North Carolina State University shows that a species of shellfish widely consumed in the Pacific over the past 3,000 years has actually increased in size, despite and possibly because of increased human activity in the area.

"What we've found indicates that human activity does not necessarily mean that there is going to be a negative impact on a species even a species that people relied on as a major food source," says Dr. Scott Fitzpatrick, associate professor of sociology and anthropology at NC State and co-author of the study. "The trends we see in the archaeological record in regard to animal remains are not always what one would expect."

At issue is the humped conch, Strombus gibberulus, a small mollusk that has been a food source in the Pacific islands for thousands of years. The researchers dated and measured more than 1,400 humped conch shells found at an archaeological site on the island of Palau in the western Pacific. They expected the size of the conchs to decrease over time, based on the conventional wisdom that an expanding human population would result in the conchs being harvested before they could achieve their maximum size.

Instead, the researchers were surprised to find that the average size of the conchs actually increased in conjunction with a growing human population. Specifically, the length of the average conch increased by approximately 1.5 millimeters (mm) over the past 3,000 years. That may not sound like much, but it is significant when you consider the conchs are only around 30 mm long which means the conchs are now almost 5 percent larger than they used to be.

Fitzpatrick believes the size increase is likely related to an increase in nutrients in the conch's waters, stemming from increased agriculture and other human activities.

"In the big picture," Fitzpatrick says, "this study tells us to focus on the physical evidence and beware
'/>"/>

Contact: Matt Shipman
matt_shipman@ncsu.edu
919-515-6386
North Carolina State University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Queens helps produce archaeological time machine
2. Shipworm threatens archaeological treasures
3. Study: The bright red of cardinals means less in urban areas
4. New study shows that oilsands mining and processing are polluting the Athabasca River
5. BUSPH study observes link between decongestant use in pregnant women and lower risk of preterm birth
6. Study points to key genetic driver of severe allergic asthma
7. Neuronal diversity makes a difference, says Carnegie Mellon study
8. Jefferson receives $3 million NIH grant to study molecular and genetic mechanisms in platelets
9. Texas A&M research produces tools to study stallions subfertility
10. UCI-Scripps study links cellular motors to memory
11. Coral off Puerto Ricos coast ideal case study for Gulf oil spills impact
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Archaeological study shows human activity may have boosted shellfish size
(Date:7/28/2014)... U.S. cities that have seen an increase in so-called ... closures, overwhelmed storm drains and compromised infrastructure--are on the ... , This nuisance flooding, caused by rising sea levels, ... and 925 percent since the 1960s. , The report, ... the United States, also finds Annapolis and Baltimore, Maryland, ...
(Date:7/28/2014)... found that 73 percent of adult survivors of childhood ... syndrome and related health problems by failing to follow ... issue of the journal Cancer . , Almost ... cancer in the study had metabolic syndrome, an umbrella ... abdominal obesity, elevated triglyceride and other abnormalities that often ...
(Date:7/28/2014)... and treat HIV infection has been problematic until now ... arouse as they get rid of the invaders. Now, ... and the National Institutes of Health (NIH) have demonstrated ... around the time of infection could have long-term ... appeared in Nature . , Interferons, named ...
Breaking Biology News(10 mins):NOAA: 'Nuisance flooding' an increasing problem as coastal sea levels rise 2NOAA: 'Nuisance flooding' an increasing problem as coastal sea levels rise 3Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 2Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 3Interfering with interferon 2
... during deployments, U.S. Army units can gain tactical ... and post-conflict operations, and boost overall mission success, ... The study finds that commanders have not ... despite the effect environmental conditions can have on ...
... 23, 2008 Researchers at Sentara Cardiovascular Research Institute begin ... effectiveness of stents to open airways of patients with ... The EASE (Exhale Airway Stents for Emphysema) Trial ... to create new pathways to release trapped air from ...
... out of every three Americans is obese. These individuals are ... to other health problems, such as diabetes. ... the muscle. As a result, accumulated fat by-products inside ... of fat by-products, fat must either be oxidized (burned, as ...
Cached Biology News:Army can boost mission success by better managing 2Army can boost mission success by better managing 3Army can boost mission success by better managing 4Sentara begins international trial -- open at only 24 US locations 2For insulin sensitive overweight patients, 1 session of exercise improves metabolic health 2
(Date:7/25/2014)... California (PRWEB) July 25, 2014 Lawrence ... named to Thomson Reuters list of " The World's ... are part of the 3,000 researchers who were identified ... to recognize those who published the highest-impact work (2002-2012 ... research papers on combustion modeling . , "This ...
(Date:7/25/2014)... At the request of the AMA, ... extension for the public comment period (Docket No. FAA-2014-0396) ... Aircraft established by Congress as part of the FAA ... establishes the new deadline for comments as September 23, ... notice published in the Federal Register on July 25, ...
(Date:7/24/2014)... Tenn., July 24, 2014 -- A novel combination of ... Department of Energy,s Oak Ridge National Laboratory an unprecedented ... its unusual physical and electrochemical properties. , The ... oxygen affects the surface of a perovskite manganite, a ... The new avenue to understand surface behavior could benefit ...
(Date:7/24/2014)... 24, 2014  Asterias Biotherapeutics, Inc. (OTCBB: ASTYV), ... of regenerative medicine, announced today that it will ... investors on Tuesday, July 29, 2014, at 4:30 ... include an overview of Asterias, business strategy and ... http://www.ustream.tv/channel/asterias-biotherapeutics at least 15 minutes before ...
Breaking Biology Technology:Scientists Burst onto Influential List for Combustion Research 2Scientists Burst onto Influential List for Combustion Research 3Scientists Burst onto Influential List for Combustion Research 4FAA Grants Comment Extension at the Request of AMA 2ORNL study reveals new characteristics of complex oxide surfaces 2Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4
... - YM BioSciences Inc. (NYSE Alternext US:YMI, ... develops and commercializes differentiated products for patients ... clearance from Canadian regulatory authorities to initiate ... nimotuzumab, its EGFR-targeting antibody, in combination with ...
... Start of Q4 2008 , - Evaluation of strategic alternatives ... RoleSAN DIEGO, Jan. 5 ADVENTRX Pharmaceuticals, Inc. (NYSE Alternext ... reduction-in-force in an effort to extend its remaining cash and ... a reduction implemented in October 2008. In all, the ...
... Jan. 5 LightLab Imaging Inc. today,announced ... past year that are,the culmination of sustained ... These advances significantly increase the Company,s leadership,position ... OCT is a new,high-resolution, high-speed imaging ...
Cached Biology Technology:YM BIOSCIENCES RECEIVES CLEARANCE TO INITIATE RANDOMIZED DOUBLE-BLIND CLINICAL TRIALS OF NIMOTUZUMAB IN LUNG CANCER AND BRAIN METASTASES FROM LUNG CANCER 2YM BIOSCIENCES RECEIVES CLEARANCE TO INITIATE RANDOMIZED DOUBLE-BLIND CLINICAL TRIALS OF NIMOTUZUMAB IN LUNG CANCER AND BRAIN METASTASES FROM LUNG CANCER 3YM BIOSCIENCES RECEIVES CLEARANCE TO INITIATE RANDOMIZED DOUBLE-BLIND CLINICAL TRIALS OF NIMOTUZUMAB IN LUNG CANCER AND BRAIN METASTASES FROM LUNG CANCER 4YM BIOSCIENCES RECEIVES CLEARANCE TO INITIATE RANDOMIZED DOUBLE-BLIND CLINICAL TRIALS OF NIMOTUZUMAB IN LUNG CANCER AND BRAIN METASTASES FROM LUNG CANCER 5YM BIOSCIENCES RECEIVES CLEARANCE TO INITIATE RANDOMIZED DOUBLE-BLIND CLINICAL TRIALS OF NIMOTUZUMAB IN LUNG CANCER AND BRAIN METASTASES FROM LUNG CANCER 6YM BIOSCIENCES RECEIVES CLEARANCE TO INITIATE RANDOMIZED DOUBLE-BLIND CLINICAL TRIALS OF NIMOTUZUMAB IN LUNG CANCER AND BRAIN METASTASES FROM LUNG CANCER 7ADVENTRX Announces Further Cost-Cutting Measures 2ADVENTRX Announces Further Cost-Cutting Measures 3ADVENTRX Announces Further Cost-Cutting Measures 4ADVENTRX Announces Further Cost-Cutting Measures 5LightLab Imaging Leads Global Advancement of Intracoronary Imaging 2LightLab Imaging Leads Global Advancement of Intracoronary Imaging 3
Request Info...
5-bromouridine 5'-triphosphate (BrUTP) *10 mM in TE buffer*...
Estrogen Receptor (ER) Competitor Assay Kits Green for Estrogen Receptors-alpha and -beta (ER-Alpha and ER-Beta) are ideal for screening novel estrogen receptor binding compounds and endocrine disrup...
Prepared in distilled water....
Biology Products: