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B-Mode ultrasonographic evaluation of the testis in relation to serum testosterone concentration in male Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis) during the breeding season
Wu, H. -P.; Hao, Y. -J.; Li, X.; Zhao, Q. -Z.; Chen, D. -Q.; Kuang, X. -A.; Kou, Z. -B.; Feng, K. -K.; Gong, W. -M.; Wang, D.; Hao, YJ, Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China
2010
Source PublicationTHERIOGENOLOGY
ISSN0093-691X
Volume73Issue:3Pages:383-391
AbstractThe use of ultrasonography as a noninvasive tool for assessing the reproductive status of the male Yangtze finless porpoise (YFP; Neophocaena phocaenoides asiaeorientalis) was validated by correlating ultrasonographically determined testicular volume (TV) and testicular parenchyma pixel intensity (PI) with serum testosterone (T) concentration. The testes of 13 free-ranging male YFPs from the Tian-e-Zhou Reserve and three captive animals from the Baiji Dolphinarium (Wuhan, China) were examined ultrasonographically during April 2008. Testis volume was determined using Lambert's formula for an ellipsoid. Testicular parenchyma PI was evaluated by analyzing testicular ultrasonograms using pixel analysis software (Image J). Serum T concentrations were determined using a single-antibody radioimmunoassay. The TV, PI, and serum T concentration were low and similar in animals with body length <133 cm, highest in those with body length >= 142 cm, and highly variable in those with body length from 133 to 141 cm. Both TV and PI were closely correlated with serum T concentration (r = 0.91 and r = 0.85, respectively; P < 0.01), indicating a consistent association between structural and functional development of the testis. In conclusion, we inferred that puberty onset in male YFPs occurred when TV was >150 cm(3) and PI was >60 during the breeding season and that testicular ultrasonography and pixel analysis was an efficient, noninvasive, real-time tool to evaluate testicular function of live male YFPs. (C) 2010 Elsevier Inc. All rights reserved.
KeywordPixel Intensity Testis Volume Testosterone Ultrasonography Yangtze Finless Porpoise
Department[Wu, H. -P.; Hao, Y. -J.; Zhao, Q. -Z.; Chen, D. -Q.; Kuang, X. -A.; Kou, Z. -B.; Feng, K. -K.; Gong, W. -M.; Wang, D.] Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China; [Wu, H. -P.] Chinese Acad Sci, Grad Sch, Beijing, Peoples R China; [Li, X.] Wuhan Univ, ZhongNan Hosp, Wuhan 430072, Peoples R China
Subject AreaReproductive Biology ; Veterinary Sciences
Funding OrganizationNational Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018]
Indexed BySCI
Language英语
WOS IDWOS:000276750100012
Funding OrganizationNational Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018]
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/13487
Collection水生生物多样性与资源保护研究中心_期刊论文
Corresponding AuthorHao, YJ, Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China
Recommended Citation
GB/T 7714
Wu, H. -P.,Hao, Y. -J.,Li, X.,et al. B-Mode ultrasonographic evaluation of the testis in relation to serum testosterone concentration in male Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis) during the breeding season[J]. THERIOGENOLOGY,2010,73(3):383-391.
APA Wu, H. -P..,Hao, Y. -J..,Li, X..,Zhao, Q. -Z..,Chen, D. -Q..,...&Hao, YJ, Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China.(2010).B-Mode ultrasonographic evaluation of the testis in relation to serum testosterone concentration in male Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis) during the breeding season.THERIOGENOLOGY,73(3),383-391.
MLA Wu, H. -P.,et al."B-Mode ultrasonographic evaluation of the testis in relation to serum testosterone concentration in male Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis) during the breeding season".THERIOGENOLOGY 73.3(2010):383-391.
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