caa a22 4500 469097426 CHVBK 20180323133035.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF00317241 doi (NATIONALLICENCE)springer-10.1007/BF00317241 Brody Alison Department of Entomology, University of California, 95616, Davis, CA, USA aut Oviposition choices by a pre-dispersal seed predator ( Hylemya sp.) [Elektronische Daten] I. Correspondence with hummingbird pollinators, and the role of plant size, density and floral morphology [Alison Brody] Summary: Although the importance of pollinators has most often been examined in the evolution of floral characters, seed predators may also play a role in shaping floral evolution. In this study, I examined the role of interplant distance, plant size, and flower morphology on Ipomopsis aggregatás (Polemoniaceae) attractiveness to a pre-dispersal seed predator, Hylemya sp. (Anthomyiidae) and to hummingbird pollinators. The attractiveness of I. aggregata individuals to Hylemya was nonlinearly related to interplant distance in experimental arrays. Clumped and highly dispersed plants were preyed upon more frequently than those at intermediate distances. I found no relationship between interplant distance and visitation rates by hummingbird pollinators in these experimental arrays. However, in natural populations studied, clumped plants were more frequently approached by hummingbirds than those growing more widely dispersed. Display size was unrelated to visitation by Hylemya on inflorescences I clipped and maintained as "large”, "small” and "control”. Display size was also unrelated to the total number of visits by hummingbird pollinators to each of these experimental plants, however "large” display plants were more likely to be visited first in any given visitation sequence. Of various morphological measurements, corolla length showed the strongest positive correlation with Hylemya egg presence. To the extent that plant spacing and morphology is correlated with pollinator visits and ultimate seed set, Hylemya could be choosing flowers optimally, and playing a role in the evolution of floral traits. Springer-Verlag, 1992 Pre-dispersal seed predation nationallicence Pollination nationallicence Floral display nationallicence Plant spacing nationallicence Hylemya sp nationallicence Oecologia Springer-Verlag 91/1(1992-08-01), 56-62 0029-8549 91:1<56 1992 91 442 https://doi.org/10.1007/BF00317241 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317241 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Brody Alison Department of Entomology, University of California, 95616, Davis, CA, USA aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 91/1(1992-08-01), 56-62 0029-8549 91:1<56 1992 91 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer