17α,20β-Dihydroxy-4-pregnen-3-one: a steroidal primer pheromone increasing milt volume in the goldfish, Carassius auratus
| العنوان: | 17α,20β-Dihydroxy-4-pregnen-3-one: a steroidal primer pheromone increasing milt volume in the goldfish, Carassius auratus |
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| المؤلفون: | N. E. Stacey, Peter W. Sorensen |
| المصدر: | Canadian Journal of Zoology. 64:2412-2417 |
| بيانات النشر: | Canadian Science Publishing, 1986. |
| سنة النشر: | 1986 |
| مصطلحات موضوعية: | Milt, Etiocholanolone glucuronide, medicine.medical_specialty, Biology, Endocrinology, Internal medicine, medicine, Pregnenolone, Pheromone, Animal Science and Zoology, Androstenedione, Glucuronide, Ecology, Evolution, Behavior and Systematics, Testosterone, Testosterone glucuronide, medicine.drug |
| الوصف: | The volume of milt that could be stripped from male goldfish, Carassius auratus, increased dramatically when fish were exposed overnight to water with concentrations of 17α,20β-dihydroxy-4-pregnen-3-one (17,20P) as low as 10−10 M. A variety of free steroids (pregnenolone, androstenedione, testosterone, 11-ketotestosterone, 17β-estradiol) and glucuronated steroids (etiocholanolone glucuronide, testosterone glucuronide, 17β-estradiol glucuronide), suggested by others to function as pheromones in fish, failed to increase milt volume at a concentration of 5 × 10−9 M. The milt response appears to be specific to 17,20P and progesterone precursors (17α-hydroxyprogesterone, progesterone), but is most sensitive to 17.20P. Because bilateral section of the olfactory tracts completely blocked the milt response to 17.20P, it is believed to be a pheromone. Selective sectioning of the lateral and medial subdivisions of the olfactory tracts demonstrated that the milt response to 17,20P is dependent on the medial tract. Increases in milt in response to 17,20P are not affected by interaction with conspecifics; exposure to 17,20P induced equivalent responses in males held in isolation, paired with a male, or paired with a female. It is proposed that 17,20P, which is produced during oocyte final maturation in the female, is a "primer" pheromone released to the water and that it increases milt volume in the male. This effect is discussed in relation to releaser pheromone effects previously demonstrated in goldfish. |
| تدمد: | 1480-3283 0008-4301 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::594923781d7142032b4cb8f2531bc3b0Test https://doi.org/10.1139/z86-360Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........594923781d7142032b4cb8f2531bc3b0 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14803283 00084301 |
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