JCAA

      


Help Needed
Rutgers Study: Mercury in Saltwater Fish

BACKGROUND: In addition to providing valuable recreational opportunities fish are an important part of a nutritious diet. Fish provide high quality protein, while generally being low in fat.  Fish are high in omega-3 fatty acids which are beneficial both for fetal and infant development and for adult health.  But some fish contain certain contaminants, particularly mercury and PCBs which can be harmful. Several studies have identified fish that are high in mercury (such as Shark and Swordfish), but few studies have focused on finding fish low in mercury.  People who eat fish frequently will benefit from knowing which fish are low in mercury and can be eaten often. We are undertaking a study of recreationally-caught salt water fish and are seeking assistance.

OBJECTIVES:  To find out how much mercury there is in sportfish so people can make informed decisions about how much of which fish to eat. 

To understand the distribution of contaminant concentrations in different kinds of fish available to recreational fishing in coastal in New Jersey; to support advisories that can inform consumers about species low in mercury as well as high in mercury (and other contaminants).  We want to support sound choices for a healthy diet. The main contaminants of concern in fish are methylmercury and polychlorinated biphenyls (PCBs).  The current proposal emphasizes mercury, but all samples obtained will saved for PCB analyses should additional funding become available.  Both mercury and PCBs are mainly of concern for the developing fetus, but adults can consume enough fish to experience symptoms of mercury poisoning.  This work complements our previous studies of mercury in supermarket fish as well as extensive investigation of mercury in freshwater fish conducted by the NJDEP.

HOW WILL THIS HELP:  You can be part of a study that helps figure out what fish are good to eat, as well as which ones to eat fewer of.  We can also figure out whether bigger fish have higher levels of mercury, and whether there are differences in mercury levels in fish caught along different parts of the coast or at different seasons.   All collaborators will be acknowledged in talks.

RESULTS:  When we complete analyses we will provide a report to JCAA and to all of the collaborating clubs and individuals. 

PROGRESS TO DATE:  We have been collaborating with JCAA to make this study happen.  We met with the JCAA to initiate the study, and our meeting resulted in a number of wonderful contacts.  As a result of the JCAA meeting, we attended the Hi-Mar Striped Bass Tournament at Twin Lights Marina in Highlands and collected samples from 22 bass, ranging in size up to 38 pounds. Each sample is about 2 ounces of fillet. We also collaborated with the fluke tournament sponsored by JCAA and the Forked River Tuna Club.  It was a great success.  We were able to collect the following fish, and are very grateful for all the help.  We still need samples of fluke from Cape May area, and hope some JCCA fishermen can help.

LET US KNOW IF THERE ARE OTHER SUCH TOURNAMENTS THAT WE CAN ATTEND TO SAMPLE FISH (we only take a small piece).

Location

Marina

Size

(in pounds)

# of Samples

Jersey City

True World Tackle

Up to 5.08

25

Sandy Hook

Julian's

Up to 6.2

20

Barnegat

Southwinds Marina

Up to 10.8

29

Ocean City

Fin-Atics

Up to 8.5

21

Cape May

We were unable to get to this one.

NEEDED

 

At the Ladies Invitational Bluefish Tournament at Trump Marina, we obtained over 40 samples from a good size range of Bluefish (5-13.4 pounds), and we appreciated the cooperation of the anglers and of the weigh-in staff.

NEEDED:  2 ounces of fish muscle from: STRIPED BASS, WINTER FLOUNDER, SHARK, CROAKER, PORGY, BLUEFISH, SEA BASS, FLUKE (mainly from Cape May area), TAUTOG (and other fish that are frequently caught and eaten).  We need about 15 to 20 samples per species for each of the areas along the shore.

WHAT TO DO WITH THE FISH

1. Cut out about 2 ounces (a cube about 1 inch by 2 inches)),

2. Put in a ziplock plastic bag (sealed). (sandwich size is OK) 

3. Put this in a second ziplock bag, with a piece of paper that notes:

a. Species of fish

b. Total weight (in pounds) and length (in inches from nose to end of tail fork.

c. Location and Date where caught

d. Your name, address, phone number or email

4. FREEZE

WHAT TO DO WITH YOUR FROZEN SAMPLE:

1. After you have accumulated several of these samples call (732 445 4318) or

2. Email us:

 burger@biology.rutgers.edu  or

 gochfeld@eohsi.rutgers.edu

3. We will figure out how to get them, or you can arrange to bring them to us and see how the analyses are done in the laboratory.

Dr. Joanna Burger         Dr. Michael Gochfeld

Biological Sciences        Environmental Medicine

Rutgers University         UMDNJ-RWJ Medical School

604 Allison Road           170 Frelinghuysen Road

Piscataway, NJ Piscataway, NJ

08854-8082       08854

burger@biology.rutgers.edu        gochfeld@eohsi.rutgers.edu

732 445 4318, 732 445 0123 (ext. 630)

 

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