Changes in serum androgens and estrogens during spawning in bluefish Pomatomus saltator and king mackerel Scomberomorus cavalla
MacGregor III, R.; Dindo, J.J.; Finucane, J.H. (1981). Changes in serum androgens and estrogens during spawning in bluefish Pomatomus saltator and king mackerel Scomberomorus cavalla. Can. J. Zool. 59(9): 1749-1754. https://dx.doi.org/10.1139/z81-240
In: Canadian Journal of Zoology = Revue canadienne de zoologie. National Research Council: Ottawa. ISSN 0008-4301; e-ISSN 1480-3283, more
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| Keywords |
ASW, Mexico Gulf
Fluids > Body fluids > Serum
Secretory products > Hormones > Sex hormones
Sex characters
Spawning
Temporal variations > Periodic variations > Seasonal variations
Scomberomorus cavalla (Cuvier, 1829) [WoRMS]
Gulf of Mexico [Marine Regions]
Marine/Coastal |
| Authors | | Top |
- MacGregor III, R.
- Dindo, J.J.
- Finucane, J.H.
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| Abstract |
Androgens and estrogens were assayed by radioimmunoassay (RIA) technique in serum of bluefish, Pomatomus saltator , and king mackerel, Scomberomorus cavalla . Both species were collected in the northeast Gulf of Mexico from August through November 1979. When categorized by stage of ovarian development a significant correlation between gonadosomatic indices (GSI) and serum estrogens was observed among female S. cavalla but not among P. saltator . Among males and females of both species, a significant correlation between GSI and serum androgens occurred. Peak levels of androgens in male king mackerel (38.12 plus or minus 11.21 ng/mL) were not significantly different from peak levels of females (33.14 plus or minus 5.10 ng/mL). However, in female bluefish, androgens peaked at 3.68 plus or minus 0.88 ng/mL, twofold greater than in males (1.66 plus or minus 0.28 ng/mL). Following this peak, a significant reduction in androgens occurred in ripe female bluefish. |
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