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Items: 1 to 50 of 112

1.

Ancient convergent losses of Paraoxonase 1 yield potential risks for modern marine mammals.

Meyer WK, Jamison J, Richter R, Woods SE, Partha R, Kowalczyk A, Kronk C, Chikina M, Bonde RK, Crocker DE, Gaspard J, Lanyon JM, Marsillach J, Furlong CE, Clark NL.

Science. 2018 Aug 10;361(6402):591-594. doi: 10.1126/science.aap7714.

PMID:
30093596
2.

Repeated adrenocorticotropic hormone administration alters adrenal and thyroid hormones in free-ranging elephant seals.

McCormley MC, Champagne CD, Deyarmin JS, Stephan AP, Crocker DE, Houser DS, Khudyakov JI.

Conserv Physiol. 2018 Jul 17;6(1):coy040. doi: 10.1093/conphys/coy040. eCollection 2018.

3.

Comprehensive endocrine response to acute stress in the bottlenose dolphin from serum, blubber, and feces.

Champagne CD, Kellar NM, Trego ML, Delehanty B, Boonstra R, Wasser SK, Booth RK, Crocker DE, Houser DS.

Gen Comp Endocrinol. 2018 Sep 15;266:178-193. doi: 10.1016/j.ygcen.2018.05.015. Epub 2018 May 29.

PMID:
29852162
4.

Adipose transcriptome analysis provides novel insights into molecular regulation of prolonged fasting in northern elephant seal pups.

Martinez B, Khudyakov J, Rutherford K, Crocker DE, Gemmell N, Ortiz RM.

Physiol Genomics. 2018 Jul 1;50(7):495-503. doi: 10.1152/physiolgenomics.00002.2018. Epub 2018 Apr 6.

PMID:
29625017
5.

Foraging and fasting can influence contaminant concentrations in animals: an example with mercury contamination in a free-ranging marine mammal.

Peterson SH, Ackerman JT, Crocker DE, Costa DP.

Proc Biol Sci. 2018 Feb 14;285(1872). pii: 20172782. doi: 10.1098/rspb.2017.2782.

PMID:
29436501
6.

Climate mediates the success of migration strategies in a marine predator.

Abrahms B, Hazen EL, Bograd SJ, Brashares JS, Robinson PW, Scales KL, Crocker DE, Costa DP.

Ecol Lett. 2018 Jan;21(1):63-71. doi: 10.1111/ele.12871. Epub 2017 Nov 2.

PMID:
29096419
7.

Characterization of seasonal reproductive and stress steroid hormones in wild Radiated Tortoises, Astrochelys radiata.

Currylow AFT, Rafeliarisoa TH, Louis EE Jr, Stanford CB, Randrianjafizanaka ST, Chinn SM, Crocker DE.

Gen Comp Endocrinol. 2017 Nov 1;253:70-78. doi: 10.1016/j.ygcen.2017.09.001. Epub 2017 Sep 6.

PMID:
28888695
8.

Comparative ecophysiology of a critically endangered (CR) ectotherm: Implications for conservation management.

Currylow AFT, Mandimbihasina A, Gibbons P, Bekarany E, Stanford CB, Louis EE Jr, Crocker DE.

PLoS One. 2017 Aug 16;12(8):e0182004. doi: 10.1371/journal.pone.0182004. eCollection 2017.

9.

Variation in adrenal and thyroid hormones with life-history stage in juvenile northern elephant seals (Mirounga angustirostris).

Jelincic JA, Tift MS, Houser DS, Crocker DE.

Gen Comp Endocrinol. 2017 Oct 1;252:111-118. doi: 10.1016/j.ygcen.2017.08.001. Epub 2017 Aug 3.

PMID:
28782534
10.

Insulin induces a shift in lipid and primary carbon metabolites in a model of fasting-induced insulin resistance.

Olmstead KI, La Frano MR, Fahrmann J, Grapov D, Viscarra JA, Newman JW, Fiehn O, Crocker DE, Filipp FV, Ortiz RM.

Metabolomics. 2017 May;13(5). pii: 60. doi: 10.1007/s11306-017-1186-y. Epub 2017 Mar 27.

11.

Increased sensitivity of thyroid hormone-mediated signaling despite prolonged fasting.

Martinez B, Scheibner M, Soñanez-Organis JG, Jaques JT, Crocker DE, Ortiz RM.

Gen Comp Endocrinol. 2017 Oct 1;252:36-47. doi: 10.1016/j.ygcen.2017.07.023. Epub 2017 Jul 22.

PMID:
28743556
12.

Initial validation of blubber cortisol and progesterone as indicators of stress response and maturity in an otariid; the California sea lion (Zalophus californianus).

Beaulieu-McCoy NE, Sherman KK, Trego ML, Crocker DE, Kellar NM.

Gen Comp Endocrinol. 2017 Oct 1;252:1-11. doi: 10.1016/j.ygcen.2017.07.003. Epub 2017 Jul 8.

PMID:
28690049
13.

Adult male northern elephant seals maintain high rates of glucose production during extended breeding fasts.

Crocker DE, Wenzel BK, Champagne CD, Houser DS.

J Comp Physiol B. 2017 Dec;187(8):1183-1192. doi: 10.1007/s00360-017-1098-1. Epub 2017 Apr 18.

PMID:
28421289
14.

Stress response to handling is short lived but may reflect personalities in a wild, Critically Endangered tortoise species.

Currylow AF, Louis EE, Crocker DE.

Conserv Physiol. 2017 Mar 4;5(1):cox008. doi: 10.1093/conphys/cox008. eCollection 2017.

15.

Fasting increases the phosphorylation of AMPK and expression of sirtuin1 in muscle of adult male northern elephant seals (Mirounga angustirostris).

Lee D, Martinez B, Crocker DE, Ortiz RM.

Physiol Rep. 2017 Feb;5(4). pii: e13114. doi: 10.14814/phy2.13114. Epub 2017 Feb 27.

16.
17.

Thyroid hormone-stimulated increases in PGC-1α and UCP2 promote life history-specific endocrine changes and maintain a lipid-based metabolism.

Martinez B, Soñanez-Organis JG, Godoy-Lugo JA, Horin LJ, Crocker DE, Ortiz RM.

Am J Physiol Regul Integr Comp Physiol. 2017 Feb 1;312(2):R189-R196. doi: 10.1152/ajpregu.00395.2016. Epub 2016 Nov 30.

18.

Effects of environmental variables on surface temperature of breeding adult female northern elephant seals, Mirounga angustirostris, and pups.

Codde SA, Allen SG, Houser DS, Crocker DE.

J Therm Biol. 2016 Oct;61:98-105. doi: 10.1016/j.jtherbio.2016.09.001. Epub 2016 Sep 4.

PMID:
27712667
19.

Serum POP concentrations are highly predictive of inner blubber concentrations at two extremes of body condition in northern elephant seals.

Peterson MG, Peterson SH, Debier C, Covaci A, Dirtu AC, Malarvannan G, Crocker DE, Costa DP.

Environ Pollut. 2016 Nov;218:651-663. doi: 10.1016/j.envpol.2016.07.052. Epub 2016 Aug 5.

PMID:
27503056
20.

Plasma Hypoxanthine-Guanine Phosphoribosyl Transferase Activity in Bottlenose Dolphins Contributes to Avoiding Accumulation of Non-recyclable Purines.

López-Cruz RI, Crocker DE, Gaxiola-Robles R, Bernal JA, Real-Valle RA, Lugo-Lugo O, Zenteno-Savín T.

Front Physiol. 2016 Jun 8;7:213. doi: 10.3389/fphys.2016.00213. eCollection 2016.

21.

Oxidative stress in northern elephant seals: Integration of omics approaches with ecological and experimental studies.

Crocker DE, Khudyakov JI, Champagne CD.

Comp Biochem Physiol A Mol Integr Physiol. 2016 Oct;200:94-103. doi: 10.1016/j.cbpa.2016.02.011. Epub 2016 Feb 26.

PMID:
26924792
22.

Glucose delays the insulin-induced increase in thyroid hormone-mediated signaling in adipose of prolong-fasted elephant seal pups.

Martinez B, Soñanez-Organis JG, Viscarra JA, Jaques JT, MacKenzie DS, Crocker DE, Ortiz RM.

Am J Physiol Regul Integr Comp Physiol. 2016 Mar 15;310(6):R502-12. doi: 10.1152/ajpregu.00054.2015. Epub 2016 Jan 6.

23.

Development of Dive Capacity in Northern Elephant Seals (Mirounga angustirostris): Reduced Body Reserves at Weaning Are Associated with Elevated Body Oxygen Stores during the Postweaning Fast.

Somo DA, Ensminger DC, Sharick JT, Kanatous SB, Crocker DE.

Physiol Biochem Zool. 2015 Sep-Oct;88(5):471-82. doi: 10.1086/682386. Epub 2015 Jul 1.

PMID:
26658245
24.

Natural Variation in Stress Hormones, Comparisons Across Matrices, and Impacts Resulting from Induced Stress in the Bottlenose Dolphin.

Houser DS, Champagne CD, Crocker DE, Kellar NM, Cockrem J, Romano T, Booth RK, Wasser SK.

Adv Exp Med Biol. 2016;875:467-71. doi: 10.1007/978-1-4939-2981-8_56.

PMID:
26610993
25.

A Bioenergetics Approach to Understanding the Population Consequences of Disturbance: Elephant Seals as a Model System.

Costa DP, Schwarz L, Robinson P, Schick RS, Morris PA, Condit R, Crocker DE, Kilpatrick AM.

Adv Exp Med Biol. 2016;875:161-9. doi: 10.1007/978-1-4939-2981-8_19.

PMID:
26610956
26.

Lipophilicity of PCBs and fatty acids determines their mobilisation from blubber of weaned northern elephant seal pups.

Louis C, Covaci A, Crocker DE, Debier C.

Sci Total Environ. 2016 Jan 15;541:599-602. doi: 10.1016/j.scitotenv.2015.09.094. Epub 2015 Oct 3.

PMID:
26439651
27.

The demands of lactation promote differential regulation of lipid stores in fasting elephant seals.

Fowler MA, Debier C, Champagne CD, Crocker DE, Costa DP.

Gen Comp Endocrinol. 2016 Jan 1;225:125-132. doi: 10.1016/j.ygcen.2015.09.024. Epub 2015 Sep 25.

PMID:
26407500
28.

Summing the strokes: energy economy in northern elephant seals during large-scale foraging migrations.

Maresh JL, Adachi T, Takahashi A, Naito Y, Crocker DE, Horning M, Williams TM, Costa DP.

Mov Ecol. 2015 Sep 15;3(1):22. doi: 10.1186/s40462-015-0049-2. eCollection 2015.

29.
30.

Deep-ocean foraging northern elephant seals bioaccumulate persistent organic pollutants.

Peterson SH, Peterson MG, Debier C, Covaci A, Dirtu AC, Malarvannan G, Crocker DE, Schwarz LK, Costa DP.

Sci Total Environ. 2015 Nov 15;533:144-55. doi: 10.1016/j.scitotenv.2015.06.097. Epub 2015 Jul 4.

PMID:
26151658
31.

Muscle transcriptome response to ACTH administration in a free-ranging marine mammal.

Khudyakov JI, Champagne CD, Preeyanon L, Ortiz RM, Crocker DE.

Physiol Genomics. 2015 Aug;47(8):318-30. doi: 10.1152/physiolgenomics.00030.2015. Epub 2015 Jun 2.

32.

Oxidative stress is a potential cost of breeding in male and female northern elephant seals.

Sharick JT, Vazquez-Medina JP, Ortiz RM, Crocker DE.

Funct Ecol. 2015 Mar 1;29(3):367-376.

33.

Adipose Triglyceride Lipase, Not Hormone-Sensitive Lipase, Is the Primary Lipolytic Enzyme in Fasting Elephant Seals (Mirounga angustirostris).

Fowler MA, Costa DP, Crocker DE, Shen WJ, Kraemer FB.

Physiol Biochem Zool. 2015 May-Jun;88(3):284-94. doi: 10.1086/680079. Epub 2015 Jan 28.

PMID:
25860827
34.

Plasma FGF21 concentrations, adipose fibroblast growth factor receptor-1 and β-klotho expression decrease with fasting in northern elephant seals.

Suzuki M, Lee AY, Vázquez-Medina JP, Viscarra JA, Crocker DE, Ortiz RM.

Gen Comp Endocrinol. 2015 May 15;216:86-9. doi: 10.1016/j.ygcen.2015.03.009. Epub 2015 Apr 7.

35.

Transcriptome analysis of northern elephant seal (Mirounga angustirostris) muscle tissue provides a novel molecular resource and physiological insights.

Khudyakov JI, Preeyanon L, Champagne CD, Ortiz RM, Crocker DE.

BMC Genomics. 2015 Feb 8;16:64. doi: 10.1186/s12864-015-1253-6.

36.

Mobilisation of blubber fatty acids of northern elephant seal pups (Mirounga angustirostris) during the post-weaning fast.

Louis C, Perdaens L, Suciu S, Tavoni SK, Crocker DE, Debier C.

Comp Biochem Physiol A Mol Integr Physiol. 2015 May;183:78-86. doi: 10.1016/j.cbpa.2015.01.008. Epub 2015 Jan 23.

PMID:
25622775
37.

The degradation of proteins in pinniped skeletal muscle: viability of post-mortem tissue in physiological research.

Moore CD, Fahlman A, Crocker DE, Robbins KA, Trumble SJ.

Conserv Physiol. 2015 May 25;3(1):cov019. doi: 10.1093/conphys/cov019. eCollection 2015.

38.

Bioaccumulation of hydroxylated polychlorinated biphenyls and pentachlorophenol in the serum of northern elephant seal pups (Mirounga angustirostris).

Louis C, Covaci A, Stas M, Crocker DE, Malarvannan G, Dirtu AC, Debier C.

Environ Res. 2015 Jan;136:441-8. doi: 10.1016/j.envres.2014.08.040. Epub 2014 Nov 25.

PMID:
25460666
39.

Ontogenetic changes in skeletal muscle fiber type, fiber diameter and myoglobin concentration in the Northern elephant seal (Mirounga angustirostris).

Moore CD, Crocker DE, Fahlman A, Moore MJ, Willoughby DS, Robbins KA, Kanatous SB, Trumble SJ.

Front Physiol. 2014 Jun 10;5:217. doi: 10.3389/fphys.2014.00217. eCollection 2014.

40.

High fatty acid oxidation capacity and phosphorylation control despite elevated leak and reduced respiratory capacity in northern elephant seal muscle mitochondria.

Chicco AJ, Le CH, Schlater A, Nguyen A, Kaye S, Beals JW, Scalzo RL, Bell C, Gnaiger E, Costa DP, Crocker DE, Kanatous SB.

J Exp Biol. 2014 Aug 15;217(Pt 16):2947-55. doi: 10.1242/jeb.105916. Epub 2014 Jun 4.

41.

Mobilisation of lipophilic pollutants from blubber in northern elephant seal pups (Mirounga angustirostris) during the post-weaning fast.

Louis C, Dirtu AC, Stas M, Guiot Y, Malarvannan G, Das K, Costa DP, Crocker DE, Covaci A, Debier C.

Environ Res. 2014 Jul;132:438-48. doi: 10.1016/j.envres.2014.04.016. Epub 2014 May 21.

42.

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.

43.

Metabolic responses to adrenocorticotropic hormone (ACTH) vary with life-history stage in adult male northern elephant seals.

Ensminger DC, Somo DA, Houser DS, Crocker DE.

Gen Comp Endocrinol. 2014 Aug 1;204:150-7. doi: 10.1016/j.ygcen.2014.04.024. Epub 2014 May 2.

PMID:
24798580
44.

Free-swimming northern elephant seals have low field metabolic rates that are sensitive to an increased cost of transport.

Maresh JL, Simmons SE, Crocker DE, McDonald BI, Williams TM, Costa DP.

J Exp Biol. 2014 May 1;217(Pt 9):1485-95. doi: 10.1242/jeb.094201.

45.

Effects of age, adipose percent, and reproduction on PCB concentrations and profiles in an extreme fasting North Pacific marine mammal.

Peterson SH, Hassrick JL, Lafontaine A, Thomé JP, Crocker DE, Debier C, Costa DP.

PLoS One. 2014 Apr 22;9(4):e96191. doi: 10.1371/journal.pone.0096191. eCollection 2014.

46.

Causes of death in preweaned northern elephant seal pups (Mirounga angustirostris, Gill, 1866), Año Nuevo State Reserve, California, 2012.

Spraker TR, Lyons ET, Kuzmina TA, Tift MS, Raverty S, Jaggi N, Crocker DE.

J Vet Diagn Invest. 2014 Mar;26(2):320-6. doi: 10.1177/1040638714523427. Epub 2014 Mar 3.

PMID:
24590664
47.

Purine nucleoside phosphorylase and xanthine oxidase activities in erythrocytes and plasma from marine, semiaquatic and terrestrial mammals.

López-Cruz RI, Pérez-Milicua MB, Crocker DE, Gaxiola-Robles R, Bernal-Vertiz JA, de la Rosa A, Vázquez-Medina JP, Zenteno-Savín T.

Comp Biochem Physiol A Mol Integr Physiol. 2014 May;171:31-5. doi: 10.1016/j.cbpa.2014.02.007. Epub 2014 Feb 13.

PMID:
24530799
48.

Adiposity and fat metabolism in lactating and fasting northern elephant seals.

Crocker DE, Champagne CD, Fowler MA, Houser DS.

Adv Nutr. 2014 Jan 1;5(1):57-64. doi: 10.3945/an.113.004663. Review.

49.

Prolonged food deprivation increases mRNA expression of deiodinase 1 and 2, and thyroid hormone receptor β-1 in a fasting-adapted mammal.

Martinez B, Soñanez-Organis JG, Vázquez-Medina JP, Viscarra JA, MacKenzie DS, Crocker DE, Ortiz RM.

J Exp Biol. 2013 Dec 15;216(Pt 24):4647-54. doi: 10.1242/jeb.085290.

50.

Metabolic response to a glucagon challenge varies with adiposity and life-history stage in fasting northern elephant seals.

Crocker DE, Fowler MA, Champagne CD, Vanderlugt AL, Houser DS.

Gen Comp Endocrinol. 2014 Jan 1;195:99-106. doi: 10.1016/j.ygcen.2013.11.005. Epub 2013 Nov 13.

PMID:
24239794

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