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標題: 釣鯽魚的室內實驗 [打印本頁]

作者: omwwmy4568    時間: 2011-12-5 18:17     標題: 釣鯽魚的室內實驗

為摸清鯽魚的習性,特別是它的食性特點,可把釣回來的鯽魚放 在一個大玻璃缸中,進行人工餵養,作「垂釣」實驗,不僅另有一番情趣,更重要的是可以積累第一手資料。

  初入缸中的鯽魚,或因刺傷等原因表現為驚恐不安,食慾不好。一周之後,若再增加了夥伴,無論是喂葷餌或素餌,都會出現搶食現象。但當鯽魚的數量減少,這種搶食現象較為罕見,特別是喂素餌時,在吞餌之前,鯽魚總是頭朝缸底,翹著尾巴,向餌團拱動或用身子蹭,或用尾巴不停地扇動,有時吞人嘴中又吐出,吐出後再吞入。經過吞吞吐吐2~4次之後,才壓磨嘴吞入。這種現象說明:魚多時搶食,咬鉤兇猛;魚少時特別是喂素餌時,鯽魚吞鉤分為兩個階段,即頭朝下拱、蹭、扇、吞吞吐吐為第 一階段;吞入後壓磨嘴為第二階段。為實驗裝鉤方法與釣獲的關係,把同樣的小鉤、同樣的素餌,一個裝成鉤尖裸露,一個把鉤尖全用面餌包封。結果,鉤尖裸露的只要吞進就無法吐出,而不露鉤尖的吞進後仍可吐出。這個實驗告訴我們,裝鉤時以裸露鉤尖為好。因為只要鯽魚咬上這種鉤,就驚恐萬狀,四處亂竄,拚命掙扎。越掙扎,刺魚 越深,也就越難掙脫,形成刺魚有力的良性循環。由此可見,裸露式餌鉤的威力是比較大的。

  再看用糟食誘釣鯽魚的實驗。將集束式無托餌器炸彈式鉤,捏上糧食後投入玻璃缸中,餌團剛落缸底就被鯽魚團團圍住,用嘴不停地拱餌團。此刻魚尾扇動次數,較其他時間快得多。這是一種「信號」, 是在呼喊同伴來此覓食,也是一種「高興」的表現。餌團被魚拱動後,提前溶化散開,有的鯽魚吞入一小片豆餅渣游到缸角處壓磨嘴,而有的則是在吞食溶化餌液的同時,也將漁鉤吞入,此時只見原來的「小 霧團」被上鉤魚使勁攪動,範圍迅速擴大,未咬鉤的魚表現驚恐不安, 有的亂竄,有的企圖找到一個地方藏身,個別膽大的繼續吸食餌液又上了鉤,餌液呈霧狀。這種現象告訴我們兩點:一是鯽魚遇到危險時,會發出信號,讓其同伴離開危險區;二是液態餌較塊狀餌更便於魚吸食,看不出吞餌階段鯽魚食性雖雜,但在多種餌料中,則有明顯的選擇性。

  如把細玉米面製成酸、臭、香和不加任何添加劑的4種顆粒狀餌料,分別放在魚缸的4個角,鯽魚就先吃帶氣味的,後吃無味的。這個實驗和觀察說明,鯽魚的味覺很好,覓食主要靠品嚐而確定取捨。

  為了篩選出供釣鯽魚的專用餌,作了下列試驗:

  (1)薺麥面適量,摻點維生素B2,染成略呈金黃色。

  (2)蒸熟的白薯適量,摻點雞蛋黃。

  (3)高粱米面適量,經沖燙後,加點紅糖。

  (4)白薯切成片,曬乾後磨成粉,摻點蝦皮碎末。

  (5)土豆粉(市售粉面子)沖燙後接入細麥麩。

  (6)薺麥面、白薯粉、土豆粉各等量拌勻,沖燙後再摻入適量草莓醬。

  (7)白薯粉、土豆粉各半,沖燙後加點炒黃豆粉。

  (8)蒸熟的白薯去皮,摻入薺麥面,搗成粘糊狀。

  (9)高粱面、薺麥面、豆餅粉、白薯、土豆粉各等量拌勻,沖燙後揉軟。

  (10)炒黃豆粉、蠶豆粉、精麵粉各等量拌勻,用魚塘水調和,揉到軟硬適宜。

  (11)玉米面、薺麥面各等量拌勻,沖燙後摻點炒繭蛹粉,揉到軟硬適宜。

  (12)精麵粉、玉米面各等量拌勻,沖燙後接點子了粉,揉到軟硬適宜。

  (13)精麵粉、玉米面、養麥面各等量拌勻,沖燙後接點蚯蚓粉或奶粉,或帶糖的豆漿粉(市售),或雞骨發酵後的臭水。

  在魚缸實驗中,上述各種釣餌鯽魚都愛吃,拿到魚塘去實際應用時,鯉魚、草魚等也照樣上鉤。這說明,專釣鯽魚的餌料還有待進一 步開發。
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