ridm@nrct.go.th   ระบบคลังข้อมูลงานวิจัยไทย   รายการโปรดที่คุณเลือกไว้

Hormonal changes accompanying sexual maturation in captive milkfish (Chanos chanos Forsskal).

หน่วยงาน Southeast Asian Fisheries Development Center, Philippines

รายละเอียด

ชื่อเรื่อง : Hormonal changes accompanying sexual maturation in captive milkfish (Chanos chanos Forsskal).
นักวิจัย : Marte, Clarissa L. , Lam, T. J.
คำค้น : Milkfish , Testosterone , Chanos chanos , Fish culture , Hormones , Reproductive cycle , Seasonal variations , Seasonality , Sexual maturity , Sexual reproduction
หน่วยงาน : Southeast Asian Fisheries Development Center, Philippines
ผู้ร่วมงาน : -
ปีพิมพ์ : 2535
อ้างอิง : Marte, C. L., & Lam, T. J. (1992). Hormonal changes accompanying sexual maturation in captive milkfish (Chanos chanos Forsskal). Fish Physiology and Biochemistry, 10(4), 267–275. , 0920-1742 , http://hdl.handle.net/10862/1388 , 10.1007/BF00004475
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Fish Physiology and Biochemistry
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Steroid hormone profiles accompanying sexual maturation in captive milkfish are described. There were no significant differences in levels of serum estradiol 17-β (E2) and testosterone (T) between immature male and female fish. Mean E2 levels rose from 0.54±0.11 ng/ml in immature females (Stage 1) to 4.53±1.16 ng/ml in vitellogenic females (Stage 5), while T levels increased from 2.06±0.28 ng/ml to 38.4±9.26 ng/ml. E2 and T levels were positively correlated to GSI and oocyte diameter. In males, serum T levels increased from 2.5±0.40 ng/ml in immature males to 27.73±5.02 ng/ml in spermiating males. A significantly higher T level was found in males with thick and scantly milt (spermiation index, SPI, 2) compared to males with scanty milt (SPI, 1) or males with copious, fluid milt (SPI, 3). Serum levels of E2 and T, and the GSI in females rose significantly during the breeding season (April–June 1983). The levels of both steroids dropped below 1 ng/ml in spent females sampled in succeeding months. In immature males, T levels ranged from 1.11 ng/ml to 2.78 ng/ml and rose significantly to 21.52±8.38 ng/ml during the breeding season when GSI peaked. Serum T levels dropped to around 10 ng/ml in the succeeding months when only spent or regressed males were sampled.

บรรณานุกรม :
Marte, Clarissa L. , Lam, T. J. . (2535). Hormonal changes accompanying sexual maturation in captive milkfish (Chanos chanos Forsskal)..
    : Southeast Asian Fisheries Development Center, Philippines.
Marte, Clarissa L. , Lam, T. J. . 2535. "Hormonal changes accompanying sexual maturation in captive milkfish (Chanos chanos Forsskal).".
    : Southeast Asian Fisheries Development Center, Philippines.
Marte, Clarissa L. , Lam, T. J. . "Hormonal changes accompanying sexual maturation in captive milkfish (Chanos chanos Forsskal).."
    : Southeast Asian Fisheries Development Center, Philippines, 2535. Print.
Marte, Clarissa L. , Lam, T. J. . Hormonal changes accompanying sexual maturation in captive milkfish (Chanos chanos Forsskal).. : Southeast Asian Fisheries Development Center, Philippines; 2535.