Flowers and stigmas were collected from both native and introduced plants, pollen was identified and enumerated and floral traits were measured.
Brighamia insignis, commonly known as ʻŌlulu or Alula in Hawaiian, or colloquially as cabbage on a stick, is a critically endangered species of Hawaiian lobelioid in the bellflower family, Campanulaceae.It is native to the islands of Kauaʻi and Niʻihau. Proc. © 2007 The Linnean Society of London, Botanical Journal of the Linnean Society, 2007, 153, 21–31.
This suggests that We observed floral visitors to two species of Schiedea and conducted field experiments to test pollinator effectiveness. Conserv. No hawk moth had ever been observed visiting either species. Post-pollination phenomena and adaptive floral changes. need help in San Clemente, CAPurchased this plant from Armstrong Garden Center in 2005 and planted in mostly shade/part sun. Remnants of populations provideeffective source material for reintroduction of an endangered Hawaiian plant,Weller, S.G., Sakai, A.K., Campbell, D.R., Powers, J.M., Pena, S.R., Keir, M.J., Loomis,A.K., Heintzman, S.M., Weisenberger, L., 2017. Flowers enter the female-phase once theFourteen male-phase flowers (1–4 flowers per plant from sevendifferent plants) and fifteen female-phase flowers (1–3 flowers per plantfrom 10 different plants) were collected from the NTBG Conservationand Horticulture Center, McBryde Garden, Kaua‘i in May 2011 and atQueen Kapiolani Garden (QKG) in Honolulu in June 2011 and February2012. 7 Macrolepidoptera. Am. Half of the insect visitors were non-native antsspecies), while the remainder were an unidentified fly (Order Diptera),a thrips (Order Thysanoptera) and possibly a beetle (Order Coleoptera).The mean duration of time that these floral visitors contacted the an-duration of time spent visiting stigmas of female-phase flowers wasCollectively, the six invertebrate species made nine visits to the visits occurred during the day and four occurred at night. ), Conservation Biology ofHawaiian Forest Birds: Implications for Island Avifauna. Biol. Conserv. The long and the short of it: a global analysishawkmoth pollination niches and interaction networks. Pollination and reproduction of(Ogasawara) Islands, Japan. Brighamia insignis is a critically endangered Hawaiian lobeliad endemic to the islands of Kauaʻi and Niʻihau. Check these websites:I first saw this plant in Kaui at the National Botanical Gardens about 5 years ago.
Origin, adaptive radiation anddiversification of the Hawaiian lobeliads (Asterales: Campanulaceae). In an attempt to Floral morphology and foraging behaviour of the introduced super‐generalist pollinator are implicated as key in determining the roles introduced species play within native pollen transfer networks.High temperatures associated with climate change are expected to be detrimental for aspects of plant reproduction, such as pollen viability. Meteorol. Alula. (Eds. This timeframe is comparable to other genera that have). In: Dudareva, N., Pichersky, E. However, their high visitation rates suggest that the two remaining native Hylaeus species are potentially important pollinators for many of the native plants on which they rely for nectar and pollen resources.uaʻi and Niʻihau. Although not uncommon within the archipelago, its status is presently listed as vulnerable and, as such, a complete knowledge of its pollination biology may prove useful in preventing its decline. The honeybee carried pollen grains only unidirectionally, from the short- to long-styled morphs, because it could not reach the hidden stigmas of the short-styled flowers, and long-styled flowers set fruits 1.7–38 times more than short-styled ones. Sci. This suggests that may be predominantly outcrossing and pollen limited. Multigenerational effects of inbreedingHingston, A.B., McQuillan, P.B., 2000.
Understanding the reproductive biology of rare plant species is fundamental to managing their restoration. Nectarpercent mass sucrose measurements and then subsequently stored atTo estimate the proboscis length that a potential insect visitor wouldneed to access the nectar in male- and female-phase flowers, the dis-tances between the upper reaches of nectar in the corolla tube and the1) apex of the anther in male-phase flowers, and 2) the anther apex andstigma surface in female-phase flowers was measured in the sameflowers that were used to measure nectar standing crop. from open-pollinated and pollinator-excluded flowers. Open pollination experiments resulted in a null fruit set, indicating pollen limitation; however, mean reproductive success, according to a seasonal census, was 17 ± 3%; these contrasting results could be explained by the seasonal availability of pollinators. Thus, the difference in the number of seeds sired by pollen from the two nitrogen treatments is due to differences in pollen performance. Online rainfall atlas of Hawai‘i. However, experimental additions of pollen increased fruit production, indicating that plants are pollen-limited and that lack of pollinators carries a reproductive cost for this species. Whereas vegetative traits changed in a predictable manner with elevation, floral traits did not specifically respond to elevation. The assessment of functional changes in vegetative and floral traits along mountain slopes thus reveals different patterns in plant responses to elevation and may help to generate testable hypotheses on functional responses to current climate warming.Distyly is usually rare or not observed in species thriving on oceanic islands. Inbreeding depression and its evolutionaryCory, C., Pender, R., Jones, C.E., 2015. Plant Biol. (Christensen 1979; Hannon 2002; Koob 2000; NTBG 1992; Ragone 1993; Wagner 1999) napaliensis. Ecological communities throughout Hawaii are highly modified, and the distribution and diversity of the native pollinator community that occurred with S. angustifolia prior to these changes are wholly unknown.
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