PARTITIONING AND SHARING OF POLLINATORS BY 4 SYMPATRIC SPECIES OF DALECHAMPIA (EUPHORBIACEAE) IN PANAMA
PARTITIONING AND SHARING OF POLLINATORS BY 4 SYMPATRIC SPECIES OF DALECHAMPIA (EUPHORBIACEAE) IN PANAMA
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DOI：
10.2307/2399053
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发表时间：
1984-01-01
影响因子：
1.9
通讯作者：
HERZIG, AL
中科院分区：
文献类型：
--
作者：
ARMBRUSTER, WS;HERZIG, AL
对4个种的分布、花部形态和传粉进行了观察。产于巴拿马中部的Dalechampia（大戟科）。4 spp。在巴拿马各地以各种组合共域地发生，并由收集树脂的Euglossine蜜蜂和收集树脂和/或花粉的无刺蜜蜂和Megachilid蜜蜂授粉。除了1个例外，这些植物物种在传粉者或传粉时间上重叠很少。D.异花型的胡卢巴属（Trigona）和Hypanathidium在白天较早的时候授粉，而同域的胡卢巴属（D.攀缘植物，在一天的晚些时候由同一种蜜蜂授粉。第3同域种D. dibreifolia，由Euglossine蜜蜂授粉。D.异形体也与D. tiliifolia;后者是由euglossine蜜蜂授粉。个体D. dibreifolia和D.在同一地点，观察到Tiliifolia在一起发生，在那里它们共享授粉者（euglossine蜜蜂），并且在一天的同一时间接受授粉。种间花粉流动量大，可能是导致D.山茱萸
Observations were made on distribution, floral morphology, and pollination of 4 spp. of Dalechampia (Euphorbiaceae) in central Panama. The 4 spp. occur sympatrically in various combinations throughout Panama and are pollinated by resin-collecting euglossine bees, and resin- and/or pollen-collecting stingless bees and megachilid bees. With 1 exception, these plant species overlap very little in pollinators or time of pollination. D. heteromorpha is pollinated early in the day by Trigona and Hypanathidium whereas a sympatric congener, D. scandens, is pollinated by the same species of bees late in the day. A 3rd sympatric species, D. dioscoreifolia, is pollinated by euglossine bees. D. heteromorpha also occurs sympatrically with D. tiliifolia; the latter is pollinated by euglossine bees. Individuals of D. dioscoreifolia and D. tiliifolia were observed occurring together at only 1 site where they shared pollinators (euglossine bees) and were receptive to pollination at the same time of day. Interspecific pollen flow was substantial and may have resulted in depressed seedset in D. dioscoreifolia.