Changes in plasma steroid hormones and gonadal histology associated with sexual maturation in wild southern hake (Merluccius australis)
A detailed study of gametes development and characterization of plasma sex steroid hormones during the maturation cycle was performed for the first time in the southern hake (Merluccius australis). Fish were caught in the inland waters of the Reloncaví Sound, Interior Sea of Chiloé, Chile. Samples o...
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Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
2015
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oai:scielo:S0718-560X20150004000022015-12-04Changes in plasma steroid hormones and gonadal histology associated with sexual maturation in wild southern hake (Merluccius australis)Alvarado,ManuelSerrano,EdisonSánchez,Juan CarlosValladares,Luis Merluccius australis southern hake gonad maturation sex steroids southern Chile A detailed study of gametes development and characterization of plasma sex steroid hormones during the maturation cycle was performed for the first time in the southern hake (Merluccius australis). Fish were caught in the inland waters of the Reloncaví Sound, Interior Sea of Chiloé, Chile. Samples of gonads and blood were collected for histology and sex steroid hormone (17 β-estradiol, 11-ketotestosterone and 17,20 β-dihydroxy-4-pregnen-3-one) analysis, respectively. Sex steroid hormone quantification was performed using enzyme-immunoassay (ELISA). Results showed that M. australis males and females have asynchronous development of testicles and ovaries, in all stages of maturation. Most spawning fish were found during the spring months. Regarding the sex steroid hormones, serological fluctuations of 17 β-estradiol and 11-ketotestosterone were found during gonadal maturation of M. australis. These hormones are the main hormones responsible for vitelogenesis and spermatogenesis processes, respectively. Conversely, 17,20 ß-dihydroxy-4-pregnen-3-one did not show any serological fluctuation in females and males. Further studies involving gonadotropins, 17,20 β,21-trihydroxy-4-pregnen-3-one and vitellogenin quantification are required in order to obtain a more complete description of the reproductive physiology of wild and farmed M. australis.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.43 n.4 20152015-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2015000400002en10.3856/vol43-issue4-fulltext-2 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Merluccius australis southern hake gonad maturation sex steroids southern Chile |
| spellingShingle |
Merluccius australis southern hake gonad maturation sex steroids southern Chile Alvarado,Manuel Serrano,Edison Sánchez,Juan Carlos Valladares,Luis Changes in plasma steroid hormones and gonadal histology associated with sexual maturation in wild southern hake (Merluccius australis) |
| description |
A detailed study of gametes development and characterization of plasma sex steroid hormones during the maturation cycle was performed for the first time in the southern hake (Merluccius australis). Fish were caught in the inland waters of the Reloncaví Sound, Interior Sea of Chiloé, Chile. Samples of gonads and blood were collected for histology and sex steroid hormone (17 β-estradiol, 11-ketotestosterone and 17,20 β-dihydroxy-4-pregnen-3-one) analysis, respectively. Sex steroid hormone quantification was performed using enzyme-immunoassay (ELISA). Results showed that M. australis males and females have asynchronous development of testicles and ovaries, in all stages of maturation. Most spawning fish were found during the spring months. Regarding the sex steroid hormones, serological fluctuations of 17 β-estradiol and 11-ketotestosterone were found during gonadal maturation of M. australis. These hormones are the main hormones responsible for vitelogenesis and spermatogenesis processes, respectively. Conversely, 17,20 ß-dihydroxy-4-pregnen-3-one did not show any serological fluctuation in females and males. Further studies involving gonadotropins, 17,20 β,21-trihydroxy-4-pregnen-3-one and vitellogenin quantification are required in order to obtain a more complete description of the reproductive physiology of wild and farmed M. australis. |
| author |
Alvarado,Manuel Serrano,Edison Sánchez,Juan Carlos Valladares,Luis |
| author_facet |
Alvarado,Manuel Serrano,Edison Sánchez,Juan Carlos Valladares,Luis |
| author_sort |
Alvarado,Manuel |
| title |
Changes in plasma steroid hormones and gonadal histology associated with sexual maturation in wild southern hake (Merluccius australis) |
| title_short |
Changes in plasma steroid hormones and gonadal histology associated with sexual maturation in wild southern hake (Merluccius australis) |
| title_full |
Changes in plasma steroid hormones and gonadal histology associated with sexual maturation in wild southern hake (Merluccius australis) |
| title_fullStr |
Changes in plasma steroid hormones and gonadal histology associated with sexual maturation in wild southern hake (Merluccius australis) |
| title_full_unstemmed |
Changes in plasma steroid hormones and gonadal histology associated with sexual maturation in wild southern hake (Merluccius australis) |
| title_sort |
changes in plasma steroid hormones and gonadal histology associated with sexual maturation in wild southern hake (merluccius australis) |
| publisher |
Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar |
| publishDate |
2015 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2015000400002 |
| work_keys_str_mv |
AT alvaradomanuel changesinplasmasteroidhormonesandgonadalhistologyassociatedwithsexualmaturationinwildsouthernhakemerlucciusaustralis AT serranoedison changesinplasmasteroidhormonesandgonadalhistologyassociatedwithsexualmaturationinwildsouthernhakemerlucciusaustralis AT sanchezjuancarlos changesinplasmasteroidhormonesandgonadalhistologyassociatedwithsexualmaturationinwildsouthernhakemerlucciusaustralis AT valladaresluis changesinplasmasteroidhormonesandgonadalhistologyassociatedwithsexualmaturationinwildsouthernhakemerlucciusaustralis |
| _version_ |
1714205147938160640 |