Aging and Seasonal Serum Cortisol Concentrations in Captive Spotted Seals (Phoca largha) from the Liaodong Bay Colony
Zhang, Peijun1,2; Wei, Zhengzhi1,3; Song, Xinran4; Wang, Qinguo4; Han, Jiabo2; Li, Songhai1,5
2020
Source PublicationAQUATIC MAMMALS
ISSN0167-5427
Volume46Issue:3Pages:266-273
Abstract

Cortisol, a regulator of both energy intake and storage, changes with an animal's physiological state and is often used as an index of body fitness and stress response. To obtain a baseline concentration of cortisol in spotted seals, we analyzed serum cortisol concentrations using electro-chemiluminescence immunoassay in captive spotted seals (Phoca largha) (individual seals could be sampled multiple times with 64 cortisol samples from females and 81 from males) of different ages and in different reproductive seasons from the Liaodong Bay colony. Serum cortisol concentration first dropped steadily from 359 (334 to 463) nmol/L at 1 year of age to 254 +/- 81 nmol/L at 6 years of age, and then increased steadily to 387 +/- 55 nmol/L at age 12. This cortisol concentration pattern appears to experience a nadir concomitant with sexual maturity. We found significant serum cortisol concentration differences in the varying reproductive seasons, with cortisol concentration in the pre-breeding season (November to January; 341 +/- 88 nmol/L) and the breeding-molt season (February to March; 355 +/- 108 nmol/L) higher than in the other season (April to October; 212 [155 to 267] nmol/L; because the data for the other season is skewed, the interquartile range was presented). We did not detect serum cortisol concentration differences between male and female seals or between immature and mature seals. The present study provides a normal serum cortisol concentration profile related to age, sex, and reproductive season for captive spotted seals from the Liaodong Bay colony, which can provide helpful reference material for wild counterparts of this polar species.

Keywordspotted seal Phoca largha cortisol Liaodong Bay glucocorticoid
DOI10.1578/AM.46.3.2020.266
Indexed BySCI
Funding OrganizationNatural Science Foundation of Hainan Province ; National Natural Science Foundation of China ; Major Science and Technology Project in t Iainan Province ; Public Science and Technology Research Funds Projects of Ocean China
Language英语
Funding ProjectNatural Science Foundation of Hainan Province[417213] ; National Natural Science Foundation of China[41806157] ; Major Science and Technology Project in t Iainan Province[ZDKJ2016009-1-1] ; Public Science and Technology Research Funds Projects of Ocean China[201105011-4]
WOS KeywordPLASMA-CORTISOL ; STRESS ; GLUCOCORTICOIDS ; CONSERVATION ; VITULINA ; HARBOR ; TRANSLOCATION ; TESTOSTERONE ; INDICATOR ; PATTERNS
WOS Research AreaMarine & Freshwater Biology ; Zoology
WOS SubjectMarine & Freshwater Biology ; Zoology
WOS IDWOS:000532640300004
PublisherEUROPEAN ASSOC AQUATIC MAMMALS
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/7679
Collection深海科学研究部_海洋哺乳动物与海洋生物声学研究室
Corresponding AuthorZhang, Peijun; Han, Jiabo
Affiliation1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya Key Lab Marine Mammal & Marine Bioacoust, Sanya, Hainan, Peoples R China
2.Liaoning Ocean & Fisheries Sci Res Inst, Dalian Key Lab Conservat Biol Endangered Marine M, Dalian, Liaoning, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Dalian Sun Asia Tourism Holding Co Ltd, Dalian, Liaoning, Peoples R China
5.Natl Univ Singapore, Trop Marine Sci Inst, Singapore, Singapore
First Author AffilicationSanya Key Lab Marine Mammal & Marine Bioacoust
Corresponding Author AffilicationSanya Key Lab Marine Mammal & Marine Bioacoust
Recommended Citation
GB/T 7714
Zhang, Peijun,Wei, Zhengzhi,Song, Xinran,et al. Aging and Seasonal Serum Cortisol Concentrations in Captive Spotted Seals (Phoca largha) from the Liaodong Bay Colony[J]. AQUATIC MAMMALS,2020,46(3):266-273.
APA Zhang, Peijun,Wei, Zhengzhi,Song, Xinran,Wang, Qinguo,Han, Jiabo,&Li, Songhai.(2020).Aging and Seasonal Serum Cortisol Concentrations in Captive Spotted Seals (Phoca largha) from the Liaodong Bay Colony.AQUATIC MAMMALS,46(3),266-273.
MLA Zhang, Peijun,et al."Aging and Seasonal Serum Cortisol Concentrations in Captive Spotted Seals (Phoca largha) from the Liaodong Bay Colony".AQUATIC MAMMALS 46.3(2020):266-273.
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