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Egg cannibalism by milkfish (Chanos chanos Forsskal) spawners in circular floating net cages.

หน่วยงาน Southeast Asian Fisheries Development Center, Philippines

รายละเอียด

ชื่อเรื่อง : Egg cannibalism by milkfish (Chanos chanos Forsskal) spawners in circular floating net cages.
นักวิจัย : Toledo, J. D. , Gaitan, A. G.
คำค้น : Milkfish , Chanos chanos , Philippines , Cage culture , Cannibalism , Collecting devices , Experimental research , Fish eggs , Spawning , Stomach content
หน่วยงาน : Southeast Asian Fisheries Development Center, Philippines
ผู้ร่วมงาน : -
ปีพิมพ์ : 2535
อ้างอิง : Toledo, J. D., & Gaitan, A. G. (1992). Egg cannibalism by milkfish (Chanos chanos Forsskal) spawners in circular floating net cages. Journal of Applied Ichthyology, 8(1-4), 257–262. , 0175-8659 , http://hdl.handle.net/10862/1401 , 10.1111/j.1439-0426.1992.tb00692.x
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of Applied Ichthyology
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Egg cannibalism by milkfish spawners in a circular floating net cage was investigated. The cage was lined with a fine mesh hapa net to retain spawned eggs and to prevent the entry of fish egg predators. Water samples were collected from the surface (0 m), middle (1.5 m), and bottom (3.0 m) of a 10 m diameter by 3 m deep floating net cage at the time of initial detection of spawning (0 min) and at 30, 60, 120 and 240 min thereafter. The mean number of spawned eggs at the surface significantly decreased (P<0.05) 60 min after spawning and very few eggs were recovered 240 min later. There was no significant difference (P>0.05) in the mean number of spawned eggs collected from the middle and bottom of the net cage at various times after spawning. Eggs were found in the digestive tract of all milkfish sampled (n=6) at about 5 h after spawning, indicating that captive milkfish eat their own eggs. It is recommended that spontaneously spawned milkfish eggs should be collected immediately after spawning to avoid loss by egg cannibalism.

บรรณานุกรม :
Toledo, J. D. , Gaitan, A. G. . (2535). Egg cannibalism by milkfish (Chanos chanos Forsskal) spawners in circular floating net cages..
    : Southeast Asian Fisheries Development Center, Philippines.
Toledo, J. D. , Gaitan, A. G. . 2535. "Egg cannibalism by milkfish (Chanos chanos Forsskal) spawners in circular floating net cages.".
    : Southeast Asian Fisheries Development Center, Philippines.
Toledo, J. D. , Gaitan, A. G. . "Egg cannibalism by milkfish (Chanos chanos Forsskal) spawners in circular floating net cages.."
    : Southeast Asian Fisheries Development Center, Philippines, 2535. Print.
Toledo, J. D. , Gaitan, A. G. . Egg cannibalism by milkfish (Chanos chanos Forsskal) spawners in circular floating net cages.. : Southeast Asian Fisheries Development Center, Philippines; 2535.