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Items: 1 to 50 of 61

1.

Anterior vena caval oxygen profiles in a deep-diving California sea lion: arteriovenous shunts, a central venous oxygen store and oxygenation during lung collapse.

Tift MS, Hückstädt LA, Ponganis PJ.

J Exp Biol. 2018 Jan 10;221(Pt 1). pii: jeb163428. doi: 10.1242/jeb.163428.

2.

Heart rate regulation in diving sea lions: the vagus nerve rules.

Ponganis PJ, McDonald BI, Tift MS, Williams CL.

J Exp Biol. 2017 Apr 15;220(Pt 8):1372-1381. doi: 10.1242/jeb.146779. Review.

3.

Flipper stroke rate and venous oxygen levels in free-ranging California sea lions.

Tift MS, Hückstädt LA, McDonald BI, Thorson PH, Ponganis PJ.

J Exp Biol. 2017 Apr 15;220(Pt 8):1533-1540. doi: 10.1242/jeb.152314. Epub 2017 Feb 6.

4.

Advances in Technology: Blood-sampling at depth. Focus on "Development of an animal-borne blood sample collection device and its deployment for the determination of cardiovascular and stress hormones in submerged phocid seals".

Ponganis PJ.

Am J Physiol Regul Integr Comp Physiol. 2016 Nov 1;311(5):R917-R918. doi: 10.1152/ajpregu.00411.2016. Epub 2016 Oct 5. No abstract available.

5.

Full circumpolar migration ensures evolutionary unity in the Emperor penguin.

Cristofari R, Bertorelle G, Ancel A, Benazzo A, Le Maho Y, Ponganis PJ, Stenseth NC, Trathan PN, Whittington JD, Zanetti E, Zitterbart DP, Le Bohec C, Trucchi E.

Nat Commun. 2016 Jun 14;7:11842. doi: 10.1038/ncomms11842.

6.

Penguin lungs and air sacs: implications for baroprotection, oxygen stores and buoyancy.

Ponganis PJ, St Leger J, Scadeng M.

J Exp Biol. 2015 Mar;218(Pt 5):720-30. doi: 10.1242/jeb.113647.

7.

Elevated carboxyhemoglobin in a marine mammal, the northern elephant seal.

Tift MS, Ponganis PJ, Crocker DE.

J Exp Biol. 2014 May 15;217(Pt 10):1752-7. doi: 10.1242/jeb.100677.

8.

Deep-diving sea lions exhibit extreme bradycardia in long-duration dives.

McDonald BI, Ponganis PJ.

J Exp Biol. 2014 May 1;217(Pt 9):1525-34. doi: 10.1242/jeb.098558.

9.

Blood oxygen depletion is independent of dive function in a deep diving vertebrate, the northern elephant seal.

Meir JU, Robinson PW, Vilchis LI, Kooyman GL, Costa DP, Ponganis PJ.

PLoS One. 2013 Dec 23;8(12):e83248. doi: 10.1371/journal.pone.0083248. eCollection 2013.

10.

Insights from venous oxygen profiles: oxygen utilization and management in diving California sea lions.

McDonald BI, Ponganis PJ.

J Exp Biol. 2013 Sep 1;216(Pt 17):3332-41. doi: 10.1242/jeb.085985.

11.

Activity time budget during foraging trips of emperor penguins.

Watanabe S, Sato K, Ponganis PJ.

PLoS One. 2012;7(11):e50357. doi: 10.1371/journal.pone.0050357. Epub 2012 Nov 21.

12.

Lung collapse in the diving sea lion: hold the nitrogen and save the oxygen.

McDonald BI, Ponganis PJ.

Biol Lett. 2012 Dec 23;8(6):1047-9. doi: 10.1098/rsbl.2012.0743. Epub 2012 Sep 19.

13.

Muscle energy stores and stroke rates of emperor penguins: implications for muscle metabolism and dive performance.

Williams CL, Sato K, Shiomi K, Ponganis PJ.

Physiol Biochem Zool. 2012 Mar-Apr;85(2):120-33. doi: 10.1086/664698. Epub 2012 Feb 29.

14.

Point of no return in diving emperor penguins: is the timing of the decision to return limited by the number of strokes?

Shiomi K, Sato K, Ponganis PJ.

J Exp Biol. 2012 Jan 1;215(Pt 1):135-40. doi: 10.1242/jeb.064568.

15.

In pursuit of Irving and Scholander: a review of oxygen store management in seals and penguins.

Ponganis PJ, Meir JU, Williams CL.

J Exp Biol. 2011 Oct 15;214(Pt 20):3325-39. doi: 10.1242/jeb.031252. Review.

16.

Stroke rates and diving air volumes of emperor penguins: implications for dive performance.

Sato K, Shiomi K, Marshall G, Kooyman GL, Ponganis PJ.

J Exp Biol. 2011 Sep 1;214(Pt 17):2854-63. doi: 10.1242/jeb.055723.

17.

What triggers the aerobic dive limit? Patterns of muscle oxygen depletion during dives of emperor penguins.

Williams CL, Meir JU, Ponganis PJ.

J Exp Biol. 2011 Jun 1;214(Pt 11):1802-12. doi: 10.1242/jeb.052233.

18.

Diving mammals.

Ponganis PJ.

Compr Physiol. 2011 Jan;1(1):447-65. doi: 10.1002/cphy.c091003. Review.

PMID:
23737181
19.

Fishing for data in the Ross Sea.

Blight LK, Ainley DG, Ackley SF, Ballard G, Ballerini T, Brownell RL Jr, Cheng CH, Chiantore M, Costa D, Coulter MC, Dayton P, Devries AL, Dunbar R, Earle S, Eastman JT, Emslie SD, Evans CW, Garrott RA, Kim S, Kooyman G, Lescroël A, Lizotte M, Massaro M, Olmastroni S, Ponganis PJ, Russell J, Siniff DB, Smith WO Jr, Stewart BS, Stirling I, Willis J, Wilson P, Woehler EJ.

Science. 2010 Dec 3;330(6009):1316. doi: 10.1126/science.330.6009.1316. No abstract available.

PMID:
21127229
20.

Myoglobin production in emperor penguins.

Ponganis PJ, Welch TJ, Welch LS, Stockard TK.

J Exp Biol. 2010 Jun 1;213(11):1901-6. doi: 10.1242/jeb.042093.

21.

Blood temperature profiles of diving elephant seals.

Meir JU, Ponganis PJ.

Physiol Biochem Zool. 2010 May-Jun;83(3):531-40. doi: 10.1086/651070.

PMID:
20334547
22.

Hypoxemic and ischemic tolerance in emperor penguins.

Zenteno-Savin T, St Leger J, Ponganis PJ.

Comp Biochem Physiol C Toxicol Pharmacol. 2010 Jun;152(1):18-23. doi: 10.1016/j.cbpc.2010.02.007. Epub 2010 Feb 19.

PMID:
20172048
23.

Investigation of the potential for vascular bubble formation in a repetitively diving dolphin.

Houser DS, Dankiewicz-Talmadge LA, Stockard TK, Ponganis PJ.

J Exp Biol. 2010 Jan 1;213(1):52-62. doi: 10.1242/jeb.028365.

24.

Scaling of swim speed and stroke frequency in geometrically similar penguins: they swim optimally to minimize cost of transport.

Sato K, Shiomi K, Watanabe Y, Watanuki Y, Takahashi A, Ponganis PJ.

Proc Biol Sci. 2010 Mar 7;277(1682):707-14. doi: 10.1098/rspb.2009.1515. Epub 2009 Nov 11.

25.

High-affinity hemoglobin and blood oxygen saturation in diving emperor penguins.

Meir JU, Ponganis PJ.

J Exp Biol. 2009 Oct;212(Pt 20):3330-8. doi: 10.1242/jeb.033761.

26.

Extreme hypoxemic tolerance and blood oxygen depletion in diving elephant seals.

Meir JU, Champagne CD, Costa DP, Williams CL, Ponganis PJ.

Am J Physiol Regul Integr Comp Physiol. 2009 Oct;297(4):R927-39. doi: 10.1152/ajpregu.00247.2009. Epub 2009 Jul 29.

27.

O2 store management in diving emperor penguins.

Ponganis PJ, Stockard TK, Meir JU, Williams CL, Ponganis KV, Howard R.

J Exp Biol. 2009 Jan;212(Pt 2):217-24. doi: 10.1242/jeb.026096.

28.

Blood flow and metabolic regulation in seal muscle during apnea.

Ponganis PJ, Kreutzer U, Stockard TK, Lin PC, Sailasuta N, Tran TK, Hurd R, Jue T.

J Exp Biol. 2008 Oct;211(Pt 20):3323-32. doi: 10.1242/jeb.018887.

29.

Heart rate regulation and extreme bradycardia in diving emperor penguins.

Meir JU, Stockard TK, Williams CL, Ponganis KV, Ponganis PJ.

J Exp Biol. 2008 Apr;211(Pt 8):1169-79. doi: 10.1242/jeb.013235.

30.

Returning on empty: extreme blood O2 depletion underlies dive capacity of emperor penguins.

Ponganis PJ, Stockard TK, Meir JU, Williams CL, Ponganis KV, van Dam RP, Howard R.

J Exp Biol. 2007 Dec;210(Pt 24):4279-85.

31.

Blood oxygen depletion during rest-associated apneas of northern elephant seals (Mirounga angustirostris).

Stockard TK, Levenson DH, Berg L, Fransioli JR, Baranov EA, Ponganis PJ.

J Exp Biol. 2007 Aug;210(Pt 15):2607-17.

32.

Stroke frequency, but not swimming speed, is related to body size in free-ranging seabirds, pinnipeds and cetaceans.

Sato K, Watanuki Y, Takahashi A, Miller PJ, Tanaka H, Kawabe R, Ponganis PJ, Handrich Y, Akamatsu T, Watanabe Y, Mitani Yo, Costa DP, Bost CA, Aoki K, Amano M, Trathan P, Shapiro A, Naito Y.

Proc Biol Sci. 2007 Feb 22;274(1609):471-7.

33.

Intravascular pressure profiles in elephant seals: hypotheses on the caval sphincter, extradural vein and venous return to the heart.

Ponganis PJ, Stockard TK, Levenson DH, Berg L, Baranov EA.

Comp Biochem Physiol A Mol Integr Physiol. 2006 Sep;145(1):123-30. Epub 2006 Jun 2.

PMID:
16820312
34.

Cardiac output and muscle blood flow during rest-associated apneas of elephant seals.

Ponganis PJ, Stockard TK, Levenson DH, Berg L, Baranov EA.

Comp Biochem Physiol A Mol Integr Physiol. 2006 May;144(1):105-11. Epub 2006 Mar 6.

PMID:
16574449
35.

Visual pigments of marine carnivores: pinnipeds, polar bear, and sea otter.

Levenson DH, Ponganis PJ, Crognale MA, Deegan JF 2nd, Dizon A, Jacobs GH.

J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2006 Aug;192(8):833-43. Epub 2006 Mar 30.

PMID:
16572322
36.

Air sac PO2 and oxygen depletion during dives of emperor penguins.

Knower Stockard T, Heil J, Meir JU, Sato K, Ponganis KV, Ponganis PJ.

J Exp Biol. 2005 Aug;208(Pt 15):2973-80.

37.

Emperor penguins adjust swim speed according to the above-water height of ice holes through which they exit.

Sato K, Ponganis PJ, Habara Y, Naito Y.

J Exp Biol. 2005 Jul;208(Pt 13):2549-54.

38.

Surfactant from diving aquatic mammals.

Spragg RG, Ponganis PJ, Marsh JJ, Rau GA, Bernhard W.

J Appl Physiol (1985). 2004 May;96(5):1626-32. Epub 2003 Dec 19.

39.

Regional heterothermy and conservation of core temperature in emperor penguins diving under sea ice.

Ponganis PJ, Van Dam RP, Levenson DH, Knower T, Ponganis KV, Marshall G.

Comp Biochem Physiol A Mol Integr Physiol. 2003 Jul;135(3):477-87.

PMID:
12829055
40.

Stroke frequencies of emperor penguins diving under sea ice.

van Dam RP, Ponganis PJ, Ponganis KV, Levenson DH, Marshall G.

J Exp Biol. 2002 Dec;205(Pt 24):3769-74.

41.

Effects of training on forced submersion responses in harbor seals.

Jobsis PD, Ponganis PJ, Kooyman GL.

J Exp Biol. 2001 Nov;204(Pt 22):3877-85.

42.

Detection of myoglobin desaturation in Mirounga angustirostris during apnea.

Ponganis PJ, Kreutzer U, Sailasuta N, Knower T, Hurd R, Jue T.

Am J Physiol Regul Integr Comp Physiol. 2002 Jan;282(1):R267-72.

43.

Temperature regulation in emperor penguins foraging under sea ice.

Ponganis PJ, Van Dam RP, Knower T, Levenson DH.

Comp Biochem Physiol A Mol Integr Physiol. 2001 Jul;129(4):811-20.

PMID:
11440867
44.

Energetic cost of foraging in free-diving emperor penguins.

Nagy KA, Kooyman GL, Ponganis PJ.

Physiol Biochem Zool. 2001 Jul-Aug;74(4):541-7.

PMID:
11436138
45.

Energetics of surface swimming in Brandt's cormorants (Phalacrocorax penicillatus brandt).

Ancel A, Starke LN, Ponganis PJ, Van Dam R, Kooyman GL.

J Exp Biol. 2000 Dec;203(Pt 24):3727-31.

46.

Sub-ice foraging behavior of emperor penguins.

Ponganis PJ, Van Dam RP, Marshall G, Knower T, Levenson DH.

J Exp Biol. 2000 Nov;203(Pt 21):3275-8.

47.

Diving physiology of birds: a history of studies on polar species.

Ponganis PJ, Kooyman GL.

Comp Biochem Physiol A Mol Integr Physiol. 2000 Jun;126(2):143-51. Review.

PMID:
10936756
48.

Physiological responses of king penguins during simulated diving to 136 m depth

Ponganis PJ, Kooyman GL, van Dam R, LeMaho Y.

J Exp Biol. 1999 Oct;202 (Pt 20):2819-22.

49.

Development of diving capacity in emperor penguins.

Ponganis PJ, Starke LN, Horning M, Kooyman GL.

J Exp Biol. 1999 Apr;202(Pt 7):781-6.

50.

Myoglobin in pelagic small cetaceans.

Dolar ML, Suarez P, Ponganis PJ, Kooyman GL.

J Exp Biol. 1999 Feb;202(Pt 3):227-36.

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