Annual cycle of ovarian development and sex hormones of grey mullet (Mugil cephalus) in captivity
The grey mullet fingerling were imported to Iran in 1997 from Hong Kong and in coastal fish pond of north part of Iran were successfully cultured in order to obtain broodstocks and induce artificial reproduction. Seasonal changes in serum concentrations of Testosterone, 17-β Estradiole (E2), 17-α Hydroxy Progesterone and also the level of calcium, Triglyceride and cholesterol in females grey mullet in captivity were measured by Radioimmunoassay or colorimetry, respectively. Investigating of sex steroids in different sexual maturity indicated that increasing of oocyte diameter and sexual maturity development serum testosterone was increased significantly (P<0.05). Although Biochemical parameters concentrations in blood serum of grey mullet diminished significantly until third stage of sexual maturity (P< 0.05), their level showed a rising trend at the fourth stage. A significant increase was observed in the serum protein and cholesterol concentrations (P<0.05), while, in contrast, serum Calcium ion and triglyceride levels didn’t have significant differences in third and fourth stages of sexual development (P>0.05). These results suggest that the seasonal changes in serum lipids and gonadal steroids were associated with reproductive development. The data also support the hypothesis that the shortening photoperiod is a major factor in stimulating reproductive activity in striped mullet.
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Format: | article biblioteca |
Language: | English |
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2012
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Subjects: | Aquaculture, Biology, Fisheries, Mugil cephalus, Ovarian development, Sexual steroid hormones, Captivity, Iran, |
Online Access: | http://hdl.handle.net/1834/37312 |
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dig-aquadocs-1834-373122021-07-07T02:18:44Z Annual cycle of ovarian development and sex hormones of grey mullet (Mugil cephalus) in captivity Yelghi, S. Shirangi, S.A. Ghorbani, R. Khoshbavar Rostami, H.A. Aquaculture Biology Fisheries Mugil cephalus Ovarian development Sexual steroid hormones Captivity Iran The grey mullet fingerling were imported to Iran in 1997 from Hong Kong and in coastal fish pond of north part of Iran were successfully cultured in order to obtain broodstocks and induce artificial reproduction. Seasonal changes in serum concentrations of Testosterone, 17-β Estradiole (E2), 17-α Hydroxy Progesterone and also the level of calcium, Triglyceride and cholesterol in females grey mullet in captivity were measured by Radioimmunoassay or colorimetry, respectively. Investigating of sex steroids in different sexual maturity indicated that increasing of oocyte diameter and sexual maturity development serum testosterone was increased significantly (P<0.05). Although Biochemical parameters concentrations in blood serum of grey mullet diminished significantly until third stage of sexual maturity (P< 0.05), their level showed a rising trend at the fourth stage. A significant increase was observed in the serum protein and cholesterol concentrations (P<0.05), while, in contrast, serum Calcium ion and triglyceride levels didn’t have significant differences in third and fourth stages of sexual development (P>0.05). These results suggest that the seasonal changes in serum lipids and gonadal steroids were associated with reproductive development. The data also support the hypothesis that the shortening photoperiod is a major factor in stimulating reproductive activity in striped mullet. Article includes abstract in Farsi on last page. 2021-06-24T18:04:58Z 2021-06-24T18:04:58Z 2012 article TRUE 1562-2916 http://hdl.handle.net/1834/37312 en http://www.ifro.ir application/pdf application/pdf 693-703 http://aquaticcommons.org/id/eprint/22546 18721 2018-04-24 16:54:27 22546 Iranian Fisheries Science Research Institute |
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Aquaculture Biology Fisheries Mugil cephalus Ovarian development Sexual steroid hormones Captivity Iran Aquaculture Biology Fisheries Mugil cephalus Ovarian development Sexual steroid hormones Captivity Iran |
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Aquaculture Biology Fisheries Mugil cephalus Ovarian development Sexual steroid hormones Captivity Iran Aquaculture Biology Fisheries Mugil cephalus Ovarian development Sexual steroid hormones Captivity Iran Yelghi, S. Shirangi, S.A. Ghorbani, R. Khoshbavar Rostami, H.A. Annual cycle of ovarian development and sex hormones of grey mullet (Mugil cephalus) in captivity |
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The grey mullet fingerling were imported to Iran in 1997 from Hong Kong and in coastal fish pond of north part of Iran were successfully cultured in order to obtain broodstocks and induce artificial reproduction. Seasonal changes in serum concentrations of Testosterone, 17-β Estradiole (E2), 17-α Hydroxy Progesterone and also the level of calcium, Triglyceride and cholesterol in females grey mullet in captivity were measured by Radioimmunoassay or colorimetry, respectively. Investigating of sex steroids in different sexual maturity indicated that increasing of oocyte diameter and sexual maturity development serum testosterone was increased significantly (P<0.05). Although Biochemical parameters concentrations in blood serum of grey mullet diminished significantly until third stage of sexual maturity (P< 0.05), their level showed a rising trend at the fourth stage. A significant increase was observed in the serum protein and cholesterol concentrations (P<0.05), while, in contrast, serum Calcium ion and triglyceride levels didn’t have significant differences in third and fourth stages of sexual development (P>0.05). These results suggest that the seasonal changes in serum lipids and gonadal steroids were associated with reproductive development. The data also support the hypothesis that the shortening photoperiod is a major factor in stimulating reproductive activity in striped mullet. |
format |
article |
topic_facet |
Aquaculture Biology Fisheries Mugil cephalus Ovarian development Sexual steroid hormones Captivity Iran |
author |
Yelghi, S. Shirangi, S.A. Ghorbani, R. Khoshbavar Rostami, H.A. |
author_facet |
Yelghi, S. Shirangi, S.A. Ghorbani, R. Khoshbavar Rostami, H.A. |
author_sort |
Yelghi, S. |
title |
Annual cycle of ovarian development and sex hormones of grey mullet (Mugil cephalus) in captivity |
title_short |
Annual cycle of ovarian development and sex hormones of grey mullet (Mugil cephalus) in captivity |
title_full |
Annual cycle of ovarian development and sex hormones of grey mullet (Mugil cephalus) in captivity |
title_fullStr |
Annual cycle of ovarian development and sex hormones of grey mullet (Mugil cephalus) in captivity |
title_full_unstemmed |
Annual cycle of ovarian development and sex hormones of grey mullet (Mugil cephalus) in captivity |
title_sort |
annual cycle of ovarian development and sex hormones of grey mullet (mugil cephalus) in captivity |
publishDate |
2012 |
url |
http://hdl.handle.net/1834/37312 |
work_keys_str_mv |
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1756079607835000832 |