天氣 : 15c, 天晴藍天, 但有煙霞.
今日一個人參加了一個大埔區半天的自然導賞遊.
行程為: 匡智會 -> 鳳園 -> 坐船遊大埔 -> 三門仔.
8:45am 在大埔火車站集合.
今天有17位朋友參加了又出現, 連上3位工作人員.
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9:15am 多我們才出發
先到第一站 : 匡智會參觀.
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會內社區很大, 我們不會參觀全部區域.
第一站是香草園.
就是看看香草, 無什麼可做.
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接下去參觀學員做 cookie
但學員星期天休息.... (那真不知要我們看什麼)
固只是導師做了一些 cookie 給我們試食.
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最後到有機農場一看
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好多好新鮮的蔬菜.
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青蕉
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很久無見了 : 怕羞草
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參觀了一個小時, 到下個景點 : 凰園
凰園其實就是蝴蝶園.
我都是第一次去.
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有蛹wo....
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但蛹原來是死了.
看不看到那個小筒, 就是寄生蜂所為.
我也是第一次聽說寄生蜂.
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後來回家在網上找了些 Iinfo:
寄生蜂大多數為膜翅目中的姬蜂科(Ichneumonidae)、小繭蜂科(Braconidae)和小蜂總科(Chalcidoidea)的種類。
寄生蜂有些對蝴蝶寄主有專一性,只選擇蝴蝶固定種類寄生,有些較廣泛性並不選擇固定寄主寄生,而能寄生於多種蝴蝶體內。同時因寄生蜂種類的不同,有的寄生於卵內,有的寄生於幼蟲或是蛹內,有的會由幼蟲期寄生到蛹,幼蟲蛻皮期和化蛹時表皮柔軟是最容易遭受寄生的時機,雌性寄生蜂發現蝴蝶寄主後,以其銳利的產卵管穿透幼蟲表皮,將多數卵產於蝴蝶幼蟲體內,孵化的寄生蜂幼蟲以寄主的體內組織為食,通常先耗食脂肪體再行攝食其他致命器官,如消化道或神經系統等,受寄生的蝴蝶幼蟲通常在尚未化蛹前即因內部器官的破壞而死。
完成發育的寄生蜂幼蟲有的會鑽出寄主體外而結繭化蛹於附近,有些種類留於寄主體內化蛹,待發育完全後羽化鑽出。寄生蜂的型態構造和生活史都非常特化以適應此種寄生生活,利用寄主尚未死亡的時間,快速地完成其發育,小型的小蜂或小繭蜂則多數個體寄生於單一寄主個體之體內,而較大型的姬蜂則只有一隻寄主。寄生蠅則通常產卵於蝴蝶幼蟲的寄主植物上待幼蟲取食寄主植物時黏附其身,而鑽入幼蟲體內營生,具有群聚性的幼蟲常見受寄生蠅寄生的實例。
多數種類的蝴蝶會盡量分散其產卵的位置,除了避免孵化幼蟲之食物競爭外,並能減少其後代受寄生的機率。除了盡量避免被寄生外,蝴蝶體內對入侵的寄生性天敵,會以生理作用加以防堵排斥其生長。雖然野外的蝴蝶受寄生性天敵危害的機率很高,但是兩者之間卻能維持平衡狀態,以便同時存活於生態系中。
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有隻好大好 ugly 的毛蟲 !
但越 ugly的蟲 , 蝴蝶越美.
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忽然有一隻好靚的凰尾蝶.
但由於我們團太多人了, 我只能站在一點影, 找不到更好角度, 只好大背光.
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有活蛹了
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這個好快變蝶.
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其實鳳園我們只遊了 45分鐘.....大家也說太小時間了
接後上車, 到碼頭上船遊船河
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我們的船.
大家初時都說不怕大風又冷, 坐上層. (後來當然只有幾位留守 )
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出發了
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這3位就是工作人員
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其實因太大煙霞, 景物是看不清的. 加上上層又大風又冷.
還好, 有別的娛樂大家...就是海鳥.
一大羣跟著船尾飛.
因當行船時, 會打起海中魚, 它們就可漁人得利.
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海鳥 Movie :
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