Dolphins Near Mouth of Bay
Tunken and Kure have returned to Bahia San Blas, and as of early this morning they were off the mouth of the bay, with Nahuel not too far away. It is likely that Kona was also there, but we did not get a signal from her during the same satellite pass as the others. David Douglas, the USGS scientist who developed the filtering program to determine which satellite fixes are reasonable to use for analyses, has also developed a program to evaluate social associations between our dolphins based on separation distance. When considering only those signals from different animals received within 10 minutes of each other, a clear pattern of consistent, close association is apparent for each pair of dolphins caught and tagged together. Evaluation of photos obtained by the Argentinean photo-ID team confirmed that the orcas they observed earlier this week were in fact the same two whales seen in the same areea a year ago, and different from the pair seen last week. The team will remain in the field through Sunday.
Tunken and Kure have returned to Bahia San Blas, and as of early this morning they were off the mouth of the bay, with Nahuel not too far away. It is likely that Kona was also there, but we did not get a signal from her during the same satellite pass as the others. David Douglas, the USGS scientist who developed the filtering program to determine which satellite fixes are reasonable to use for analyses, has also developed a program to evaluate social associations between our dolphins based on separation distance. When considering only those signals from different animals received within 10 minutes of each other, a clear pattern of consistent, close association is apparent for each pair of dolphins caught and tagged together. Evaluation of photos obtained by the Argentinean photo-ID team confirmed that the orcas they observed earlier this week were in fact the same two whales seen in the same areea a year ago, and different from the pair seen last week. The team will remain in the field through Sunday.
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