Selective flower abortion maintains moth cooperation in a newly discovered pollination mutualism
Selective flower abortion maintains moth cooperation in a newly discovered pollination mutualism
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DOI：
10.1111/j.1461-0248.2009.01425.x
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发表时间：
2010-03-01
期刊：
影响因子：
8.8
通讯作者：
Kato, Makoto
中科院分区：
文献类型：
--
作者：
Goto, Ryutaro;Okamoto, Tomoko;Kato, Makoto
当合作伙伴拥有防止彼此过度开发的机制时，互惠的进化稳定性得到增强。在专性授粉种子消费互惠，选择性败育的花朵含有过多的鸡蛋代表这样的机制，但经验性的测试一直局限于丝兰，丝兰蛾互惠。我们目前的证据选择性流产在最近发现的相互作用之间的算盘子树和Epicephala蛾。在算盘子中，败育花的比例随着卵负荷的增加和胚珠损伤的增加而逐渐增加。选择性流产导致16%的种子产量增加，与随机流产的预期相比，和蛾遭受健身损失高达62%时，产卵到预先侵染的花朵。在随机产卵下，蛾卵单独产卵的频率比预期的高，从而避免了多次侵染的潜在缺点。随着新的授粉互惠关系的发现，选择性流产机制可能比以前认为的更普遍。
P>The evolutionary stability of mutualisms is enhanced when partners possess mechanisms to prevent overexploitation by one another. In obligate pollination-seed consumption mutualisms, selective abortion of flowers containing excessive eggs represents one such mechanism, but empirical tests have long been limited to the yucca-yucca moth mutualism. We present evidence for selective abortion in the recently discovered mutualism between Glochidion trees and Epicephala moths. In Glochidion acuminatum, proportion of aborted flowers progressively increased both with higher egg load and increased ovule damage. Selective abortion resulted in a 16% seed production increase compared with expectations under random abortion, and moths suffered fitness losses as high as 62% when ovipositing into pre-infested flowers. Moth eggs were laid singly more often than expected under random oviposition, thus avoiding potential disadvantages from multiple infestations. As new pollination mutualisms are being discovered, selective abortion mechanisms may prove to be more widespread than previously thought.