Twigg L E, Socha L V
Vertebrate Pest Research Section, Agriculture Protection Board of Western Australia, Bougainvillca Avenue, 6058, Forrestfield, WA, Australia.
The University of Western Australia, Nedlands, 6907, Perth, WA, Australia.
Oecologia. 1996 Oct;108(1):21-28. doi: 10.1007/BF00333210.
The degree to which physical defence mechanisms are present in toxic species of Gastrolobium was compared with the known fluoroacetate (the toxic principle) concentrations of these plants using both histological leaf sections prepared from fresh leaves (4 species), and a variety of visual external traits measured from herbarium specimens (28 species). There was a strong negative correlation between the presence of physical deterrents (e.g. area of fibres, number and length of spines) and the fluoroacetate concentration of each species. This suggests that, with respect to their leaves, individual species have established a compromise between producing physical grazing deterrents and the adoption of chemically mediated antiherbivore strategies.
利用从新鲜叶片制备的组织学叶片切片（4个物种）以及从标本馆标本测量的各种视觉外部特征（28个物种），将毒鼠豆属有毒物种中物理防御机制的存在程度与这些植物已知的氟乙酸盐（有毒成分）浓度进行了比较。物理威慑物（如纤维面积、刺的数量和长度）的存在与每个物种的氟乙酸盐浓度之间存在很强的负相关。这表明，就其叶子而言，各个物种已经在产生物理放牧威慑物和采用化学介导的抗食草动物策略之间达成了妥协。
