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NJ Dolphin Seminars |
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NOAA Fisheries Service
nj.dolphins@noaa.gov
www.nefsc.noaa.gov/njdolphins/
| Updated April 8, 2009
Protected Species Division
55 Great Republic Drive
Gloucester, MA 01930-2276
www.nero.nmfs.gov
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Dolphin Carcass Recovered in Highlands, NJ
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Dolphin carcass at Highlands, NJ April 7, 2009 Credit:NOAA |
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Update
- On
Tuesday, April 7th, at approximately 2pm, a decomposed dolphin carcass
was found floating near the Highlands Bridge construction site in the
Shrewsbury River.
- The carcass was found by
the construction crew and a crane operator moved it from the water to
the beach on the north side of the bridge, within the construction site.
- The
local stranding network organization (Marine Mammal Stranding Center)
was unable to assist because they were already responding to several
live seal strandings, so staff from the NOAA/NMFS Sandy Hook Lab
arrived on scene to help document the carcass and identify the
species.
- Photographs taken by NOAA/NMFS staff indicate the species is most likely a bottlenose dolphin (Tursiops truncatus),
which is the same as the group of 16 dolphins that resided in the
Shrewsbury/Navesink River system between June 2008 and January
2009. Additional analyses will help confirm the species.
- It
is too soon to tell if this individual is from the group of 16
dolphins. The carcass is too decomposed to make an accurate match
with the photo-id catalogue, which uses dorsal fins and visible body
markings to identify and track individual animals.
- It
is also too soon to tell when or where this dolphin may have
died. Carcasses from different species of marine life (dolphins,
turtles, sharks, etc.,) have floated into the area before, so it is
possible this animal died outside of Sandy Hook Bay and was brought
into the Bay with the currents and tides.
- NOAA/NMFS’
Marine Mammal Health and Stranding Response Program has made
arrangements for the carcass to be retrieved and analyzed by the
Smithsonian’s National Museum of Natural History to determine age, sex,
stomach contents, population stock and possible cause of death.
Tissue samples will also be tested by the NMFS Southeast Fisheries
Science Center to determine population stock through genetic
analyses.
- NOAA/NMFS last documented
dolphins in the river system on January 13, 2009. At that time,
there were only 5 animals from the original group of 16 remaining in
the area (8 dolphins were never resighted, location and condition
unknown, and 3 dolphins stranded between September and December
2008). A local restaurant owner and his staff observed multiple
dolphins leaving the area on January 15, 2009, right before the river
froze over.
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