管理資訊
使用鈉 monofluoracetate(1080)毒殺,是最流行的方法來控制野生豬。大多數豬在攝取後四小時內會嘔吐。嘔吐物可能對非目標生物很危險,嘔吐也可能造成豬的存活。使用高劑量反嘔吐劑,例如 metoclopramide 、 thiethylperazine 與 prochlorperazine 可預防嘔吐。 夏末可用偽狂犬病和布魯氏菌疫苗,放在魚粉裡當誘餌(當自然食物供應量低),以控制這些疾病。 在1900年中期新西蘭保育人員使用大陸狩獵技術,以消除小島野豬的數量。最近毒殺技術已發展到控制或消滅野生豬的數量。(Choquenot et al., 1990; O'Brien 與 Lukins, 1990, 在 Cruzet al.2005)狩獵和毒殺技術結合使用,有利於消除較大島上的豬。在夏威夷,哈雷阿卡拉國家公園偏闢的熱帶雨林,用網子誘捕已被用來控制豬在600-800平方公里內的圍欄圍欄。許多人把豬視為高文化價值的(即:利用它們作為方便的食物來源),以致於想從指定地區移除他們,可能不被接受,如果沒有一個明確好處。以陷阱捕捉,將不會是一個永遠可以接受的控制方法。此外,一個事實,即豬是具有高度流動性,因此由個別地主或控制機構來控制他們是指不經濟的(豬會迅速從鄰近地區移入)。 聖地亞哥島加拉帕戈斯群島(厄瓜多爾外海)有很多具智慧和洞察力的移除案例。已知成功移除島上野豬的關鍵因素是:(1)持續不斷的努力(2),一個有效的毒殺活動 (3)、一個狩獵計畫 ,(4)開發更多小徑以接近它,(5)強化監督程序。在整個70年代和80年代,獵殺的努力很低(< 500 hunter-days/year),而在20世紀90年代初努力增加,但並不固定。相比之下,1990年代中期修正後的控制行動,造成了持續的,全年最少每天獵殺1500頭。獵殺豬的獵徑是重要的。需開闢額外的獵徑,並且不獵殺山羊,以便壓制植被(好讓獵人和狗進入島嶼所有的地區)激勵獵人是一個持續的挑戰,尤其是當豬的密度低時。然而,社會、道德的宣導活動與財政獎勵,可以維持獵人動機。而毒殺相較於獵殺,殺較少的豬,但是毒殺成本低,具有成本效益。毒殺使用的化合物對大多數物種都有毒,使用的利弊,應與對非目標物種的衝擊達成平衡。在2000年,最後一頭豬被射殺,最後一頭豬被毒殺後 6個月,開始密集的監測工作。持續不斷的監測工作對移除是至關重要的。缺乏如此的一個努力是負責許多根除失敗。(Campbell et al., 2004, 在 Cruz et al.2005)
管理資源 /鏈接
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