POLLINATION OF NEW CALEDONIAN WINTERACEAE - OPPORTUNISTIC SHIFTS OR PARALLEL RADIATION WITH THEIR POLLINATORS
POLLINATION OF NEW CALEDONIAN WINTERACEAE - OPPORTUNISTIC SHIFTS OR PARALLEL RADIATION WITH THEIR POLLINATORS
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DOI：
10.1007/bf00940859
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发表时间：
1990-01-01
影响因子：
1.9
通讯作者：
GROTH, I
中科院分区：
文献类型：
--
作者：
PELLMYR, O;THIEN, LB;GROTH, I
文章题目新喀里多尼亚冬科12个分类群的访花植物[Zygogynum ballonii，Z. bicolor，二色草Z. viellardii、山枣Z. macheei、刺果草Z.苹果属pomiferum，Z.胡椒属Balansae，Exospermum stipitatum（2个居群）; Bubbia panciflora，Belliapancher; B. rivulare，B.未描述的物种）。来访者是两种祖先蛾（Sabatinca; Micropterigidae），三种象鼻虫（Palontus; Callionidae）和一种蓟马。行为观察和花粉记录表明，甲虫和偶尔的蛾作为传粉者的Zygogynum和Exospermum，和Bellipelum主要是由蓟马授粉。花的挥发性物质组成简单，通常以短酯为主。初步的实验表明，乙酸乙酯引起的下车，和一个独特的蜷缩行为引起的人工混合香料。其他Sabatinca和Palontus spp.不支持冬科植物与传粉者有辐射关系的假设。现有的证据支持的概念，机会主义孤立的主机殖民地在某一点上的辐射传粉群体。
Flower visitors on 12 taxa of New Caledonian Winteraceae [Zygogynum baillonii, Z. bicolor, Z. viellardii, Z. macheei, Z. pomiferum ssp. pomiferum, Z. pifomiferum ssp. balansae, Exospermum stipitatum (2 populations) Bubbia panciflora, Belliolum pancher; B. rivulare, B. undescribed species] were studied. The visitors were two species of ancestral moths (Sabatinca; Micropterigidae), three species of weevils (Palontus; Curculionidae), and a species of thrips. Behavior observations and pollen records suggest that the beetles and occasionally the moths serve as pollinators of Zygogynum and Exospermum, and Belliolum is pollinated primarily by thrips. The floral volatiles are simple in composition, usually dominated by short esters. Preliminary experiments showed that ethyl acetate elicited alighting, and a distinctive huddling behavior was elicited by artificially mixed fragrance. The host associations of other Sabatinca and Palontus spp. do not support the hypothesis that the Winteraceae have radiated in association with their pollinators. The available evidence supports the notion of opportunistic isolated host colonizations at some point in the radiation of the pollinator groups.