Effects of florivory on plant-pollinator interactions: Implications for male and female components of plant reproduction

被引:24
作者
Carper, Adrian L. [1 ,4 ]
Adler, Lynn S. [2 ]
Irwin, Rebecca E. [1 ,3 ]
机构
[1] Dartmouth Coll, Dept Biol Sci, 78 Coll St, Hanover, NH 03755 USA
[2] Univ Massachusetts, Dept Biol, 221 Morrill Sci Ctr South,611 N Pleasant St, Amherst, MA 01003 USA
[3] N Carolina State Univ, Dept Appl Ecol, Campus Box 7617, Raleigh, NC 27695 USA
[4] Univ Colorado, Dept Ecol & Evolutionary Biol, 1900 Pleasant St, Boulder, CO 80309 USA
基金
美国国家科学基金会;
关键词
florivory; floral herbivory; pollination; indirect effects; pollen transfer; GELSEMIUM-SEMPERVIRENS LOGANIACEAE; FLORAL HERBIVORY; POLLEN FLOW; ISOMERIS-ARBOREA; DEPRESSARIA-PASTINACELLA; NEMOPHILA-MENZIESII; SOLANUM-CAROLINENSE; ECOLOGICAL COSTS; SCARLET-GILIA; FITNESS;
D O I
10.3732/ajb.1600144
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
PREMISE OF THE STUDY: Florivory could have direct negative effects on plant fitness due to consumption of floral organs, and indirect effects mediated through changes in traits important to pollination. These effects likely vary with plant sexual system, depending on sex- or morph-specific patterns of damage. We investigated the direct and indirect effects of simulated florivory on male and female components of reproduction in the native, distylous vine Gelsemium sempervirens. METHODS: We crossed floral damage and supplemental pollination treatments in a common garden array and tracked pollinator behavioral responses. We also estimated male function using fluorescent dye as an analog for pollen transfer, and measured both fruit and seed production. KEY RESULTS: The effects of floral damage varied by floral morph, the genus of floral visitor, and the component of reproduction measured. Damage reduced the number of pollinator visits to pin but not thrum plants, and increased the time some pollinators spent per flower in thrum but not pin plants. Flowers of damaged plants transferred more dye particles to recipient plants compared to undamaged plants, but only later in the season when the majority of dye transfer occurred. Damage had no effect on female reproduction. CONCLUSION: These results suggest that florivory can have positive indirect effects on estimated male plant reproduction through changes in different pollinators' behavior at flowers, but the effects of floral damage vary with male vs. female function. These results underscore the importance of other species' interactions at flowers in driving pollinator behavior and pollen transfer dynamics.
引用
收藏
页码:1061 / 1070
页数:10
相关论文
共 57 条
[1]   Comparison of pollen transfer dynamics by multiple floral visitors: Experiments with pollen and fluorescent dye [J].
Adler, LS ;
Irwin, RE .
ANNALS OF BOTANY, 2006, 97 (01) :141-150
[2]   Ecological costs and benefits of defenses in nectar [J].
Adler, LS ;
Irwin, RE .
ECOLOGY, 2005, 86 (11) :2968-2978
[3]  
Adler LS, 2001, ECOLOGY, V82, P2032, DOI 10.1890/0012-9658(2001)082[2032:DAIEOA]2.0.CO
[4]  
2
[5]   Induced responses to herbivory and increased plant performance [J].
Agrawal, AA .
SCIENCE, 1998, 279 (5354) :1201-1202
[6]  
[Anonymous], 2005, Caterpillars of Eastern North America, Patent No. [2203.04766, 220304766]
[7]   Direct and indirect effects of a sex-biased antagonist on male and female fertility: Consequences for reproductive trait evolution in a gender-dimorphic plant [J].
Ashman, Tia-Lynn ;
Penet, Laurent .
AMERICAN NATURALIST, 2007, 169 (05) :595-608
[8]   Sex-differential resistance and tolerance to herbivory in a gynodioecious wild strawberry [J].
Ashman, TL ;
Cole, DH ;
Bradburn, M .
ECOLOGY, 2004, 85 (09) :2550-2559
[9]  
Ashman TL, 2002, ECOLOGY, V83, P1175, DOI 10.1890/0012-9658(2002)083[1175:TROHIT]2.0.CO
[10]  
2