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Why pinnipeds don't echolocate.
Schusterman RJ, Kastak D, Levenson DH, Reichmuth CJ, Southall BL. Schusterman RJ, et al. Among authors: levenson dh. J Acoust Soc Am. 2000 Apr;107(4):2256-64. doi: 10.1121/1.428506. J Acoust Soc Am. 2000. PMID: 10790051 Review.
Stroke frequencies of emperor penguins diving under sea ice.
van Dam RP, Ponganis PJ, Ponganis KV, Levenson DH, Marshall G. van Dam RP, et al. Among authors: levenson dh. J Exp Biol. 2002 Dec;205(Pt 24):3769-74. doi: 10.1242/jeb.205.24.3769. J Exp Biol. 2002. PMID: 12432000
Visual pigments of marine carnivores: pinnipeds, polar bear, and sea otter.
Levenson DH, Ponganis PJ, Crognale MA, Deegan JF 2nd, Dizon A, Jacobs GH. Levenson DH, et al. J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2006 Aug;192(8):833-43. doi: 10.1007/s00359-006-0121-x. Epub 2006 Mar 30. J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2006. PMID: 16572322
Sub-ice foraging behavior of emperor penguins.
Ponganis PJ, Van Dam RP, Marshall G, Knower T, Levenson DH. Ponganis PJ, et al. Among authors: levenson dh. J Exp Biol. 2000 Nov;203(Pt 21):3275-8. doi: 10.1242/jeb.203.21.3275. J Exp Biol. 2000. PMID: 11023847
Temperature regulation in emperor penguins foraging under sea ice.
Ponganis PJ, Van Dam RP, Knower T, Levenson DH. Ponganis PJ, et al. Among authors: levenson dh. Comp Biochem Physiol A Mol Integr Physiol. 2001 Jul;129(4):811-20. doi: 10.1016/s1095-6433(01)00349-x. Comp Biochem Physiol A Mol Integr Physiol. 2001. PMID: 11440867
12 results