Northern Indian Ocean Blue Whale (putative B. m. indica)

Assembled from 32 blocks · 1 evidence · 52 related

1. Story
2. A population centred on Sri Lanka and the northern Indian Ocean that breaks the migration model this Journey otherwise describes: it does not run annually to cold high-latitude feeding grounds but remains in warm tropical water year-round. It breeds roughly six months out of phase with the southern-hemisphere pygmy blue whales and has its own acoustic call type. Its taxonomic standing is genuinely unsettled - it is discussed as a possible fourth subspecies rather than an accepted one. It was found more or less by accident, during sperm whale work off Trincomalee in the early 1980s.
3. Knowledge
4. Blue Whale (Balaenoptera musculus)
5. Northern Indian Ocean Blue Whale (putative B. m. indica)
6. Antarctic Summer Feeding Migration
7. Connections
8. Antarctic Summer Feeding Migration
9. Blue Whale (Balaenoptera musculus)
10. Northern Indian Ocean Blue Whale (putative B. m. indica)
11. Seasonal Krill Aggregation
12. Passive Acoustic Monitoring Arrays
13. Southern Ocean
14. South Georgia
15. The only published Antarctic blue whale satellite tracks are released as data
16. Antarctic Krill (Euphausia superba)
17. Rorqual Lunge Feeding
18. Antarctic Blue Whale (B. m. intermedia)
19. Pygmy Blue Whale (B. m. brevicauda)
20. Northern Indian Ocean Blue Whale (putative B. m. indica)
21. Fin Whale (Balaenoptera physalus)
22. Whale-Mediated Iron Recycling
23. Vessel Collision with Large Whales
24. The longest blue whale on record is measured at South Georgia
25. The heaviest blue whale on record is weighed
26. The IWC protects blue whales from commercial hunting
27. The commercial whaling moratorium takes effect
28. Blue whale song frequencies are observed falling worldwide
29. The energetics of blue whale lunge feeding are modelled
30. Baleen whale consumption is re-measured, and the krill paradox sharpens
31. Evidence
32. Blue whales of the northern Indian Ocean, provisionally referred to Balaenoptera musculus indica, remain in warm tropical waters year-round rather than migrating annually to cold high-latitude feeding grounds, breed roughly six months out of phase with southern Indian Ocean pygmy blue whales, and have a distinct acoustic call; their subspecies status is debated. The population was encountered during sperm whale research off Trincomalee in the early 1980s. V55 verification basis: retrieved in search summary attributed to this paper and to concurring reference material; the paper was not fetched, and the taxonomic dispute is unresolved in the sources retrieved.