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Northern right whales head south to give birth, leave genetic 'fingerprints' with NOAA researchers
Date:3/3/2008

y the New England Aquarium in Boston.

Adult Northern right whales can be easily identified by callosities, large raised patches of rough skin that resemble barnacles, on their heads. It is like recognizing a human face, Pace says of the patterns. Once we see an individual we can tell who it is. Calves, however, are difficult to identify until a whale is seven or eight months old, when the pattern of the callosities stabilizes. The master catalog of photographs contains images contributed by more than 100 researchers and organizations and is used to help identify adult animals.

There is a tremendous amount of collaboration involved between federal, state and private groups, Pace says of the project. In addition to NEFSC colleagues in Woods Hole and researchers from NOAA Fisheries Services Southeast Regional Office in St. Petersburg, Pace and Conger work with staff from GADNR, FWC, the Wildlife Trust and the New England Aquarium. Related efforts, funded by NOAA, the U.S. Navy, Army Corps of Engineers and the U.S. Coast Guard, support the Florida Early Warning System (EWS) aerial surveys.

Adult Northern right whales range from 45 to 55 feet in length and can weigh up to 70 tons. Females, which are larger than males, give birth to their first calf around the age of 9 or 10 and calve at intervals between three and six years. Calves can be 13 to 15 feet long at birth.

Seventeen mother-calf pairs have been identified to date, and researchers are watching eight females who may give birth this season. Another 80 or so non-mothers have been observed one or more times. More sightings are expected by March, when the animals head north to their summer feeding and nursery grounds off Cape Cod and in Canadas Bay of Fundy.

Conger recently returned to Woods Hole to prepare for sighting cruises for animals off the New England coast. An NEFSC team will be evaluating areas in Great South Channel east of Cape Cod and in Massachusetts and Cape
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Contact: Shelley Dawicki
shelley.dawicki@noaa.gov
508-495-2378
NOAA National Marine Fisheries Service
Source:Eurekalert

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