Western Atlantic

• Main Authors: J. Belgrano, J. Masello, C. Gribaudo, D. Arcucci, F. Krohling, M. Failla, M. Iñíguez
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Antarctic; Austral; Lockyer; The Antarctic; Antarc*; Balaenoptera borealis; Sei Whale
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.520.906; http://cethus.org/pdf/sightings_of_sei_whales_on_the_south_western_atlantic_sc_59_sh13.pdf

The sei whale, Balaenoptera borealis (Lesson, 1828) is distributed worldwide but favour temperate and oceanic waters. This note summarizes the results of 16 sightings of sei whales on the South Western Atlantic. The sei whale, Balaenoptera borealis (Lesson, 1828) is found in all oceans but tends to remain in more temperate waters than the other rorquals. This species migrates considerable distances between higher latitude summer grounds and lower latitude winter grounds (Rice, 1998). Two subspecies, one in the Northern Hemisphere and the other in the Southern Hemisphere were identified by Tomilin (1946 in Rice, 1998). The Southern Hemisphere subspecies known as B. b. schlegellii (Flower, 1865) were found between the subtropical convergence and the Antarctic convergence during the austral summer. Only large animals were found south of the Antarctic convergence (Lockyer, 1977). The sei whale was not exploited until the era of modern whaling at the end of the 1800´s. In the Southern