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我當時沒有拍攝礙於設備ㄉ問題
我最近又要試試看冬季ㄉ輪虫培養
有培養出這種我不知名ㄉ餌生我在發文
與大家討論謝謝你ㄉ建議
我最近又要試試看冬季ㄉ輪虫培養
有培養出這種我不知名ㄉ餌生我在發文
與大家討論謝謝你ㄉ建議
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謝謝您ㄉ解答
它好像真ㄉ沒什麼營養因為魚苗過料後全都死ㄌ
至於是不是纖毛虫我也不知道因為它的型態好像不太像纖毛虫
我有觀察到有類似截肢動物ㄉ腳不太像纖毛
總之也不重要ㄌ因為他確實不太營養
這裡也有一篇報告，關於使用nauplii可以將火焰幼苗存活率由幾乎0大大提升到30％，有興趣的可以看看，裡面也有關於P. crassirostris、Acartia sp.等簡單的培養說明。
http://w3.dsi.uanl.mx/publicaciones/maricultura/viii/pdf/6Schipp.pdf
TO bali ：
不知道在你們那邊有沒有做火焰這類的小型神仙？
-=-=-=- 以下內容由 Brick 在 2007年12月07日 11:32am 時新增 -=-=-=-
對了裡面有幾段我覺得蠻有參考價值的：
In Darwin, we commenced investigating the application of copepods to larval fish rearing in 1993 when we were faced with difficulties in culturing the tropical Lutjanid, golden snapper, Lutjanus johnii (Bloch). Early attempts at larval rearing using either the normal strain rotifer, Brachionus plicatilis, or a small strain, local rotifer, Syncaeta sp, as first feed were characterised by total mortality of the larvae within five days from the commencement of feeding. At the time we observed that rotifers were rarely ingested, and if they were, then were often being excreted intact by the larvae, indicating that ingested rotifers were not being digested. Starved larvae exhibited similar survival times to those fed rotifers
Subsequent research at the Darwin Aquaculture Centre resulted in the development of a method for the semi-intensive culture of L. johnii juveniles. The method relied on the use of nauplii of a locally available copepod of the Acartia genus as a first feed for the larvae. Once the fish larvae had copepods included in their diet, their survival quickly moved from zero to over 30% after metamorphosis.
Since 2002 further refinement to the method has including extending the culture technique to another species of calanoid, Parvocalanus crassirostris, and successfully using these copepods in Hawaii to produce a range of fish species including, the flame angelfish, Centropyge loricula (Gunther); crimson jobfish, Pristipomoides filamentosus (Valenciennes); almaco jack, Seriola rivoliana (Valenciennes) and the peacock hind, Cephalopholis argus (Bloch and Schneider).
Since 2002 further refinement to the method has including extending the culture technique to another species of calanoid, Parvocalanus crassirostris, and successfully using these copepods in Hawaii to produce a range of fish species including, the flame angelfish, Centropyge loricula (Gunther); crimson jobfish, Pristipomoides filamentosus (Valenciennes); almaco jack, Seriola rivoliana (Valenciennes) and the peacock hind, Cephalopholis argus (Bloch and Schneider).
From our experience both P. crassirostris and Acartia sp. have proved to be suitable as first feeds for a wide variety of fish species. The fish that we have cultured can be divided into two broad groups. Those whose early survival is strongly linked to feeding on copepod nauplii and who do not survive well, if at all, if copepods are not used. This group includes, Lutjanus johnii, Centropyge loricula (Fig. 4), Pristipomoides filamentosus and Cephalopholis argus. The other group is those fish that do not need copepods as first feed and who will do quite well on rotifers or Artemia but when copepods are used as a supplement, their growth is significantly enhanced. This group includes, barramundi, Lates calcarifer (Bloch); almaco jack, Seriola rivoliana; giant trevally, Caranx ignobilis (Forsskal); and the common dolphinfish, Coryphaena hippurus (Linnaeus)
Most fish larvae appear to be very capable of successfully finding and consuming copepod nauplii even if the nauplii are present in only low numbers. It is well recognised that larvae will preferentially feed on copepods, even amongst a bloom of rotifers (Kuhlmann, Quantz & Witt 1981; Van der Meeren 1991; Ali, Mohn Salleh & Siti Noraziah 1998). In many of our fish cultures when nauplii numbers were as low as 0.5 per mL and rotifers more than 10 per mL, nauplii were the dominant prey item in the stomach contents of first feeding larvae
「以上文章引用自w3.dsi.uanl.mx/publicaciones/maricultura/viii/pdf/6Schipp.pdf」
http://w3.dsi.uanl.mx/publicaciones/maricultura/viii/pdf/6Schipp.pdf
TO bali ：
不知道在你們那邊有沒有做火焰這類的小型神仙？
-=-=-=- 以下內容由 Brick 在 2007年12月07日 11:32am 時新增 -=-=-=-
對了裡面有幾段我覺得蠻有參考價值的：
In Darwin, we commenced investigating the application of copepods to larval fish rearing in 1993 when we were faced with difficulties in culturing the tropical Lutjanid, golden snapper, Lutjanus johnii (Bloch). Early attempts at larval rearing using either the normal strain rotifer, Brachionus plicatilis, or a small strain, local rotifer, Syncaeta sp, as first feed were characterised by total mortality of the larvae within five days from the commencement of feeding. At the time we observed that rotifers were rarely ingested, and if they were, then were often being excreted intact by the larvae, indicating that ingested rotifers were not being digested. Starved larvae exhibited similar survival times to those fed rotifers
Subsequent research at the Darwin Aquaculture Centre resulted in the development of a method for the semi-intensive culture of L. johnii juveniles. The method relied on the use of nauplii of a locally available copepod of the Acartia genus as a first feed for the larvae. Once the fish larvae had copepods included in their diet, their survival quickly moved from zero to over 30% after metamorphosis.
Since 2002 further refinement to the method has including extending the culture technique to another species of calanoid, Parvocalanus crassirostris, and successfully using these copepods in Hawaii to produce a range of fish species including, the flame angelfish, Centropyge loricula (Gunther); crimson jobfish, Pristipomoides filamentosus (Valenciennes); almaco jack, Seriola rivoliana (Valenciennes) and the peacock hind, Cephalopholis argus (Bloch and Schneider).
Since 2002 further refinement to the method has including extending the culture technique to another species of calanoid, Parvocalanus crassirostris, and successfully using these copepods in Hawaii to produce a range of fish species including, the flame angelfish, Centropyge loricula (Gunther); crimson jobfish, Pristipomoides filamentosus (Valenciennes); almaco jack, Seriola rivoliana (Valenciennes) and the peacock hind, Cephalopholis argus (Bloch and Schneider).
From our experience both P. crassirostris and Acartia sp. have proved to be suitable as first feeds for a wide variety of fish species. The fish that we have cultured can be divided into two broad groups. Those whose early survival is strongly linked to feeding on copepod nauplii and who do not survive well, if at all, if copepods are not used. This group includes, Lutjanus johnii, Centropyge loricula (Fig. 4), Pristipomoides filamentosus and Cephalopholis argus. The other group is those fish that do not need copepods as first feed and who will do quite well on rotifers or Artemia but when copepods are used as a supplement, their growth is significantly enhanced. This group includes, barramundi, Lates calcarifer (Bloch); almaco jack, Seriola rivoliana; giant trevally, Caranx ignobilis (Forsskal); and the common dolphinfish, Coryphaena hippurus (Linnaeus)
Most fish larvae appear to be very capable of successfully finding and consuming copepod nauplii even if the nauplii are present in only low numbers. It is well recognised that larvae will preferentially feed on copepods, even amongst a bloom of rotifers (Kuhlmann, Quantz & Witt 1981; Van der Meeren 1991; Ali, Mohn Salleh & Siti Noraziah 1998). In many of our fish cultures when nauplii numbers were as low as 0.5 per mL and rotifers more than 10 per mL, nauplii were the dominant prey item in the stomach contents of first feeding larvae
「以上文章引用自w3.dsi.uanl.mx/publicaciones/maricultura/viii/pdf/6Schipp.pdf」
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我提供一些小小個人看法,
過料是不是一定得用吃的呢?還是可以吸收水中營養份就可以呢?這是可以探討的.
輪蟲s型是50,那如果輪蟲卵那是否可行呢?
藻水或濃縮藻大小都在3-5左右.其大小一定可以過料,但就不知它吃不吃囉.
它的習性我覺得可以先討論,並再來一步一步達到繁殖目標.我覺得這是方向會比較好.
那我有遇到一些小問題想和請較大家一下,如果各位前輩知道再麻煩指導一下.
1.最適合的環境,鹽度,ph ,t??
2.是否一天孵化,3天吸收卵黃營養.第四天過料.光的影響大不大?
3.一般有用過過料方法?nano藻還是其它的,或是其它丿步.
4.魚苗到成魚是否有天敵的病毒?
5.小魚應該養到3公分還是5公分會比較好呢?
輪蟲身影....
原圖連結(Large Size Image) 拍攝資訊(EXIF)
過料是不是一定得用吃的呢?還是可以吸收水中營養份就可以呢?這是可以探討的.
輪蟲s型是50,那如果輪蟲卵那是否可行呢?
藻水或濃縮藻大小都在3-5左右.其大小一定可以過料,但就不知它吃不吃囉.
它的習性我覺得可以先討論,並再來一步一步達到繁殖目標.我覺得這是方向會比較好.
那我有遇到一些小問題想和請較大家一下,如果各位前輩知道再麻煩指導一下.
1.最適合的環境,鹽度,ph ,t??
2.是否一天孵化,3天吸收卵黃營養.第四天過料.光的影響大不大?
3.一般有用過過料方法?nano藻還是其它的,或是其它丿步.
4.魚苗到成魚是否有天敵的病毒?
5.小魚應該養到3公分還是5公分會比較好呢?
輪蟲身影....
原圖連結(Large Size Image) 拍攝資訊(EXIF)
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今天要放火燄卵了
水質條件 鹽度32ppt ph 8.1 t 29
加入nano藻,菌,滲透壓,還有過料的東西(液狀)
希望第一次能有進展.
kevin
水質條件 鹽度32ppt ph 8.1 t 29
加入nano藻,菌,滲透壓,還有過料的東西(液狀)
希望第一次能有進展.
kevin
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這次放卵後,因純水加入海鹽後,感覺味道怪怪的,果然不出所料,孵出率超低,不過還是有孵出,
不過這次我做的肥水比較淡,所以第四天就沒啦,不過還是會繼續努力的.
近期還會放卵,應該會有機會....加油囉.
不過這次我做的肥水比較淡,所以第四天就沒啦,不過還是會繼續努力的.
近期還會放卵,應該會有機會....加油囉.
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請教一下,台中東勢地區有供應嗎?
steven257387
🏅🏅🏅
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怎麼不試試看~把魚卵放在台灣附近乾淨的海域
或是在海邊用一個魚池，引入天然海水，讓他在人造下的自然環境成長???
或是在海邊用一個魚池，引入天然海水，讓他在人造下的自然環境成長???
