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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44305

Title: 砂蝦繁殖試驗
Authors: 廖一久;丁雲源;勝谷邦夫
Date: 1969
Issue Date: 2017-11-21T08:07:47Z
Publisher: 農復會漁業叢書
Abstract: Abstract:
The prawn, Metapenaeus monoceros (Fabricius), is an important crustacean for culture in association with milkfish in ponds. However, little work has been done with regard to its artificial propagation.
In the present work an attempt is made to propagate this species artificially and the results obtained are summarized as follows:
(1) Nine fully ripe prawns were collected live from a shrimp trawler and kept in plastic tanks of 500 liters with constant aeration. The next day four of them spawned giving 28 x 10^4 free separate eggs.
(2) The egg is spherical, isolecithal, its cleavage being holoblastic and equal just like that of the other Penaeidae and its diameter 0.22 mm.
(3) Its cleavage takes 12 to 13 hours from spawing to hatching at temperature of 29.2℃-30.8℃, salinity of 31.11~32.47‰.
(4) The body length of the first nauplius is 0.29 mm, the first zoea 0.77 mm, the first mysis 2.2 mm and the first post-larva 3.5 mm.
(5) Present workers found Metapenaeus monoceros hardier than Penaeus monodon. At a stocking density of 25 larvae/l, the naup1ius developed to young prawn satisfactorily without renewal of fresh sea water.
(6) Finally 4950 young prawns were obtained.

(4)孵化出之無節幼蟲(Nauplius)之體長0.29公厘,此期不食任何餌料。眼幼蟲(Zoea)之第一期體長為0.77公厘,此期開始攝食如矽藻之一種Skeletcnema costatum 以及較小之其他植物性浮游生物。糠蝦期幼蟲(Mysis)之第一期體長為2.2公厘,此期宜繼續飼以植物性浮游生物而漸漸提高動物性浮游生物如橈腳類(copepoda)一類之混合率。第一後期幼蟲(the first post-larva)之體長為3.5公厘。此蝦進入底棲生活,為期似較草蝦之幼蟲要早,並且雖飼在同一個水槽中其成長度之參差程度,即體形之大小之變動範圍很大。
Relation: 8, pp.72-76
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44305
Appears in Collections:[廖一久院士專區] 叢書

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