Dependence of the Testosterone Concentration in the Blood of Male Beluga Whales Delphinapterus leucas on the Age and Season
The results of a study of the reproductive system of male beluga whales ( Delphinapterus leucas ), in particular, an analysis of the content of serum testosterone in blood serum samples during the growth and development of animals, are presented. This study was conducted on male whales kept in semi-...
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| Veröffentlicht in: | Biology bulletin of the Russian Academy of Sciences 2022-04, Vol.49 (2), p.101-106 |
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| container_title | Biology bulletin of the Russian Academy of Sciences |
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| creator | Inyakina, N. V. Musidray, A. A. Nikitkina, E. V. Mukhachev, E. V. Politov, V. P. Shiryaev, G. V. |
| description | The results of a study of the reproductive system of male beluga whales (
Delphinapterus leucas
), in particular, an analysis of the content of serum testosterone in blood serum samples during the growth and development of animals, are presented. This study was conducted on male whales kept in semi-free conditions of an open-air marine enclosure complex in the Barents Sea. A total of nine belugas were examined, and 50 samples were analyzed. Blood sampling was carried out from the ventral or dorsal vein of the caudal fin. The testosterone content in the samples was determined by the method of heterogeneous enzyme-linked immunosorbent assay (ELISA). A comparative assessment of the concentration of this steroid hormone in young and mature animals showed a positive linear correlation between the level of testosterone secretion and the age of the animal. Studies have shown that the sexual maturity of male beluga whales occurs by the age of 8–10, when serum testosterone levels of 15 nmol/L or higher are reached. |
| doi_str_mv | 10.1134/S106235902202011X |
| format | Article |
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Delphinapterus leucas
), in particular, an analysis of the content of serum testosterone in blood serum samples during the growth and development of animals, are presented. This study was conducted on male whales kept in semi-free conditions of an open-air marine enclosure complex in the Barents Sea. A total of nine belugas were examined, and 50 samples were analyzed. Blood sampling was carried out from the ventral or dorsal vein of the caudal fin. The testosterone content in the samples was determined by the method of heterogeneous enzyme-linked immunosorbent assay (ELISA). A comparative assessment of the concentration of this steroid hormone in young and mature animals showed a positive linear correlation between the level of testosterone secretion and the age of the animal. Studies have shown that the sexual maturity of male beluga whales occurs by the age of 8–10, when serum testosterone levels of 15 nmol/L or higher are reached.</description><identifier>ISSN: 1062-3590</identifier><identifier>EISSN: 1608-3059</identifier><identifier>DOI: 10.1134/S106235902202011X</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Age ; Animal and Human Physiology ; Biochemistry ; Biomedical and Life Sciences ; Blood levels ; Cell Biology ; Delphinapterus leucas ; Ecology ; Enzyme-linked immunosorbent assay ; Life Sciences ; Reproductive system ; Sexual maturity ; Testosterone ; Zoology</subject><ispartof>Biology bulletin of the Russian Academy of Sciences, 2022-04, Vol.49 (2), p.101-106</ispartof><rights>Pleiades Publishing, Inc. 2022. ISSN 1062-3590, Biology Bulletin, 2022, Vol. 49, No. 2, pp. 101–106. © Pleiades Publishing, Inc., 2022. Russian Text © The Author(s), 2022, published in Izvestiya Akademii Nauk, Seriya Biologicheskaya, 2022, No. 2, pp. 174–180.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c246t-e614f73b50d972a0742d5c62e6e843bb98720e7d57599e35e0753cf1859e6603</citedby><cites>FETCH-LOGICAL-c246t-e614f73b50d972a0742d5c62e6e843bb98720e7d57599e35e0753cf1859e6603</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S106235902202011X$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S106235902202011X$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27928,27929,41492,42561,51323</link.rule.ids></links><search><creatorcontrib>Inyakina, N. V.</creatorcontrib><creatorcontrib>Musidray, A. A.</creatorcontrib><creatorcontrib>Nikitkina, E. V.</creatorcontrib><creatorcontrib>Mukhachev, E. V.</creatorcontrib><creatorcontrib>Politov, V. P.</creatorcontrib><creatorcontrib>Shiryaev, G. V.</creatorcontrib><title>Dependence of the Testosterone Concentration in the Blood of Male Beluga Whales Delphinapterus leucas on the Age and Season</title><title>Biology bulletin of the Russian Academy of Sciences</title><addtitle>Biol Bull Russ Acad Sci</addtitle><description>The results of a study of the reproductive system of male beluga whales (
Delphinapterus leucas
), in particular, an analysis of the content of serum testosterone in blood serum samples during the growth and development of animals, are presented. This study was conducted on male whales kept in semi-free conditions of an open-air marine enclosure complex in the Barents Sea. A total of nine belugas were examined, and 50 samples were analyzed. Blood sampling was carried out from the ventral or dorsal vein of the caudal fin. The testosterone content in the samples was determined by the method of heterogeneous enzyme-linked immunosorbent assay (ELISA). A comparative assessment of the concentration of this steroid hormone in young and mature animals showed a positive linear correlation between the level of testosterone secretion and the age of the animal. Studies have shown that the sexual maturity of male beluga whales occurs by the age of 8–10, when serum testosterone levels of 15 nmol/L or higher are reached.</description><subject>Age</subject><subject>Animal and Human Physiology</subject><subject>Biochemistry</subject><subject>Biomedical and Life Sciences</subject><subject>Blood levels</subject><subject>Cell Biology</subject><subject>Delphinapterus leucas</subject><subject>Ecology</subject><subject>Enzyme-linked immunosorbent assay</subject><subject>Life Sciences</subject><subject>Reproductive system</subject><subject>Sexual maturity</subject><subject>Testosterone</subject><subject>Zoology</subject><issn>1062-3590</issn><issn>1608-3059</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp1kEtLxDAUhYMoOI7-AHcB19WbpEna5Tg-YcTFDOiuZNrbeVCTmrQL8c-bWsGFuLr3cs53Qg4h5wwuGRPp1ZKB4kLmwDlwYOz1gEyYgiwRIPPDuEc5GfRjchLCHgBSkfIJ-bzBFm2FtkTqatptka4wdC506J1FOndRsZ033c5ZurPfjuvGuWqwP5kmXtj0G0NftvEI9Aabdruzpo0BfaAN9qUJ1I3gbIPU2Iou0QRnT8lRbZqAZz9zSlZ3t6v5Q7J4vn-czxZJyVPVJahYWmuxllDlmhvQKa9kqTgqzFKxXueZ5oC6klrmOQqJoKUoa5bJHJUCMSUXY2zr3XsfP1fsXe9tfLHgSg-lRTK62OgqvQvBY120fvdm_EfBoBgqLv5UHBk-MiF67Qb9b_L_0BdZl3z7</recordid><startdate>20220401</startdate><enddate>20220401</enddate><creator>Inyakina, N. V.</creator><creator>Musidray, A. A.</creator><creator>Nikitkina, E. V.</creator><creator>Mukhachev, E. V.</creator><creator>Politov, V. P.</creator><creator>Shiryaev, G. V.</creator><general>Pleiades Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20220401</creationdate><title>Dependence of the Testosterone Concentration in the Blood of Male Beluga Whales Delphinapterus leucas on the Age and Season</title><author>Inyakina, N. V. ; Musidray, A. A. ; Nikitkina, E. V. ; Mukhachev, E. V. ; Politov, V. P. ; Shiryaev, G. V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c246t-e614f73b50d972a0742d5c62e6e843bb98720e7d57599e35e0753cf1859e6603</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Age</topic><topic>Animal and Human Physiology</topic><topic>Biochemistry</topic><topic>Biomedical and Life Sciences</topic><topic>Blood levels</topic><topic>Cell Biology</topic><topic>Delphinapterus leucas</topic><topic>Ecology</topic><topic>Enzyme-linked immunosorbent assay</topic><topic>Life Sciences</topic><topic>Reproductive system</topic><topic>Sexual maturity</topic><topic>Testosterone</topic><topic>Zoology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Inyakina, N. V.</creatorcontrib><creatorcontrib>Musidray, A. A.</creatorcontrib><creatorcontrib>Nikitkina, E. V.</creatorcontrib><creatorcontrib>Mukhachev, E. V.</creatorcontrib><creatorcontrib>Politov, V. P.</creatorcontrib><creatorcontrib>Shiryaev, G. V.</creatorcontrib><collection>CrossRef</collection><jtitle>Biology bulletin of the Russian Academy of Sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Inyakina, N. V.</au><au>Musidray, A. A.</au><au>Nikitkina, E. V.</au><au>Mukhachev, E. V.</au><au>Politov, V. P.</au><au>Shiryaev, G. V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dependence of the Testosterone Concentration in the Blood of Male Beluga Whales Delphinapterus leucas on the Age and Season</atitle><jtitle>Biology bulletin of the Russian Academy of Sciences</jtitle><stitle>Biol Bull Russ Acad Sci</stitle><date>2022-04-01</date><risdate>2022</risdate><volume>49</volume><issue>2</issue><spage>101</spage><epage>106</epage><pages>101-106</pages><issn>1062-3590</issn><eissn>1608-3059</eissn><abstract>The results of a study of the reproductive system of male beluga whales (
Delphinapterus leucas
), in particular, an analysis of the content of serum testosterone in blood serum samples during the growth and development of animals, are presented. This study was conducted on male whales kept in semi-free conditions of an open-air marine enclosure complex in the Barents Sea. A total of nine belugas were examined, and 50 samples were analyzed. Blood sampling was carried out from the ventral or dorsal vein of the caudal fin. The testosterone content in the samples was determined by the method of heterogeneous enzyme-linked immunosorbent assay (ELISA). A comparative assessment of the concentration of this steroid hormone in young and mature animals showed a positive linear correlation between the level of testosterone secretion and the age of the animal. Studies have shown that the sexual maturity of male beluga whales occurs by the age of 8–10, when serum testosterone levels of 15 nmol/L or higher are reached.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S106235902202011X</doi><tpages>6</tpages></addata></record> |
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| ispartof | Biology bulletin of the Russian Academy of Sciences, 2022-04, Vol.49 (2), p.101-106 |
| issn | 1062-3590 1608-3059 |
| language | eng |
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| subjects | Age Animal and Human Physiology Biochemistry Biomedical and Life Sciences Blood levels Cell Biology Delphinapterus leucas Ecology Enzyme-linked immunosorbent assay Life Sciences Reproductive system Sexual maturity Testosterone Zoology |
| title | Dependence of the Testosterone Concentration in the Blood of Male Beluga Whales Delphinapterus leucas on the Age and Season |
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