查詢結果分析
來源資料
相關文獻
- Population Dynamics and Mantle Autotomy of the Figsnail Ficus ficus (Gastropoda: Mesogastropoda: Ficidae)
- 水稻瘤野螟族群發生動態與預測
- 無土育苗介質檢出之Rhizoctonia solani的病原性與族群動態
- 水稻斑飛蝨之族群動態與發生預測
- 東方果實蠅(Bactrocera dorsalis)之族群動態及防治策略探討
- Notes on the Biology of a Poorly Known Grapsid Crab Clistocoeloma Sinensis Shen, 1933 (Decapoda: Brachyura) from Taiwan
- 梨輪紋病原菌之生理特性及田間族群動態
- 墾丁高位珊瑚礁原始林林下茄苳新生幼苗之族群動態
- 生物的禦敵策略--自割行為
- 闊葉樹混合林之生態效益監測
頁籤選單縮合
題 名 | Population Dynamics and Mantle Autotomy of the Figsnail Ficus ficus (Gastropoda: Mesogastropoda: Ficidae)=花球枇杷螺(Ficus ficus)之族群動態與自割研究 |
---|---|
作 者 | 劉莉蓮; 王曉萍; | 書刊名 | 動物研究學刊 |
卷 期 | 38:1 1999.01[民88.01] |
頁 次 | 頁1-6 |
分類號 | 386.794 |
關鍵詞 | 花球枇杷螺; 枇杷螺; 族群動態; 自割; Ficus ficus; Figsnail; Population dynamics; Autotomy; |
語 文 | 英文(English) |
中文摘要 | 花球枇杷螺(Ficus ficus)是腹足綱中腹足目的一員,具有自割外套膜的防禦機 制。本研究之目的在探討花球枇杷螺之族群動態及阮禦性自割在野外之變化。自1992年5 目至1993年6月,每個月收集高雄附近海域底拖之花球枇杷螺共採集2186個樣品。殼長範 圍介於28~95mm之間,其中殼長小於35mm之小型個體僅在7至9月間出現,枇杷螺豐度呈現 季節性變化,其中11至2目數量較多,在5至7月間族群數量較其它月份低,個體數少於75 隻。雌性個體的平均殼長大於雄性個體,殼長有性雙型的現象。雌雄性比介於0.3-2.3之 間,其中3至9月間雌性個體較多,10至2月間雄性個體較多,顯示花球枇杷螺可能有產卵 遷移行為、花球枇杷螺自割組織的重量介於0.03~8.86g之間,占個體總重的0%~34%,殼長 和自割組織占個體總重百分比有顯著的負相關(y=30.88-0.27x;R□=0.35;p<0.01),只育 少於1%之樣品有新生的再生自割組織(顯示近期在野外曾有防禦性自割發生),在每個月樣 品中只有0~3隻個體。本結果顯示具新生自割組織之枇杷螺可能較易遭到捕食或在自然環 境下防禦性自割可能很少發主。 |
英文摘要 | Population dynamics and mantle autotomy of the figsnail Ficus ficus (Gastropoda: Mesogastropoda: Ficidae). Zoological Studies 38(l): 1-6. Ficus ficus, a member of the Mesogastropoda, exhibits a special behavior of mantle autotomy as a defensive mechanism. This study was conducted to characterize the population dynamics of F. ficus and the occurrence of autotomic behavior in the field. Monthly collections of F. ficus were made between May 1 992 and June 1993. A total of 21 86 individuals were sampled with shell lengths ranging from 28 to 95 mm. Small individuals with shell lengths < 35 mm were found only between July and September 1992. Seasonal variation in the abundance of figsnails was observed: while few figsnails (less than 75 individuals) were collected from May to July, abundant snails were obtained from November to February. Sexual dimorphism in shell length (male < female) was also found. Sex ratios varied from 0.3 to 2.3 in favor of females between March and September. The male- biased sex ratios observed between October and February indicate that egg- laying migration might exist. The autotomic tissue weighed from 0.03 to 8.86 g and comprised 0'0 to 34'1. of the total body weight. A negative correlation between the percentage of autotomic tissue and shell length was observed (y = 30.88- 0.27x:R□ 0.35; p < 0.01 ). Figsnails with newly regenerated tissue (indication of recent occurrence of defensive autotomy) comprised < 1 R. of the total samples, with 0 to 3 individuals appearing in each monthly collection. The results indicate that autotomized ficisnails might be more vulnerable to predation than are intact snails, or that the occurrence of defensive autotomy in natural environments might be low. |
本系統中英文摘要資訊取自各篇刊載內容。