title: Resilient plant-bird interactions in a volcanic island ecosystem: pollination of Japanese Camellia mediated by the Japanese White-eye.
abstract: Observations of interspecies interactions during volcanic activity provide important opportunities to study how organisms respond to environmental devastation. Japanese camellia (Camellia japonica L.) and its main avian pollinator, the Japanese White-eye (Zosterops japonica), offer an excellent example of such an interaction as key members of the biotic community on Miyake-jima, which erupted in 2000 and continues to emit volcanic gases. Both species exhibit higher resistance to volcanic damage than other species. We examined the effects of volcanic activity on this plant-pollinator system by estimating pollen flow and the genetic diversity of the next generation. The results showed that despite a decrease in Camellia flowers, the partitioning of allelic richness among mother-tree pollen pools and seeds decreased while the migration rate of pollen from outside the study plot and the pollen donor diversity within a fruit increased as the index of volcanic damage increased. In areas with low food (flower) density due to volcanic damage, Z. japonica ranged over larger areas to satisfy its energy needs rather than moving to areas with higher food density. Consequently, the genetic diversity of the seeds (the next plant generation) increased with the index of volcanic damage. The results were consistent with previously published data on the movement of Z. japonica based on radio tracking and the genetic diversity of Camellia pollen adhering to pollinators. Overall, our results indicated that compensation mechanisms ensured better pollination after volcanic disturbance.
authors: Field Center for Sustainable Agriculture and Forestry, Faculty of Agriculture, Niigata University, 94-2 Koda, Sado, Niigata, Japan. apodemusnyagis@gmail.com
authors: Harue
authors: H
authors: Abe
authors: Saneyoshi
authors: S
authors: Ueno
authors: Toshimori
authors: T
authors: Takahashi
authors: Yoshihiko
authors: Y
authors: Tsumura
authors: Masami
authors: M
authors: Hasegawa
mesh_terms: D000818:Animals; D028244:Camellia / Q000502:physiology; D017753:Ecosystem; D035264:Flowers; D005638:Fruit; D014644:Genetic Variation; D005843:Geography; D062312:Islands; D007564:Japan; D046109:Passeriformes / Q000502:physiology; D011058:Pollen; D054817:Pollination; D011156:Population Density; D012098:Reproduction; D018707:Volcanic Eruptions
references: Science. 2005 Jul 1;309(5731):146-8
references: 15994561
references: Proc Biol Sci. 2003 Mar 22;270(1515):569-75
references: 12769455
references: Mol Ecol. 1999 Feb;8(2):335-6
references: 10065549
references: Trends Ecol Evol. 2006 Aug;21(8):464-71
references: 16762448
references: Mol Ecol. 2000 Jun;9(6):647-56
references: 10849281
references: Proc Natl Acad Sci U S A. 2010 Aug 3;107(31):13760-4
references: 20660738
references: Nucleic Acids Res. 1980 Oct 10;8(19):4321-5
references: 7433111
references: Mol Ecol. 1998 May;7(5):639-55
references: 9633105
references: Mol Ecol. 2009 Oct;18(20):4180-92
references: 19769693
references: Mol Ecol. 2004 Jul;13(7):1729-43
references: 15189199
references: Mol Ecol. 2003 Mar;12(3):753-64
references: 12675830
references: Genes Genet Syst. 1996 Jun;71(3):145-9
references: 8828176
references: Trends Ecol Evol. 2008 Nov;23(11):638-47
references: 18823680
references: Oecologia. 2001 Apr;127(2):239-245
references: 24577655
references: J Plant Res. 2007 May;120(3):413-20
references: 17387430
references: Heredity (Edinb). 2005 Oct;95(4):246-54
references: 16094304
references: Science. 2006 Apr 21;312(5772):431-3
references: 16627742
references: Genetics. 1985 Nov;111(3):675-89
references: 4054612
references: Oecologia. 1988 Jun;76(1):119-124
references: 28312388
references: Breed Sci. 2012 Jun;62(2):186-95
references: 23136530