Bird preferences for fruit size, but not color, vary in accordance with fruit traits along a tropical elevational gradient

Richard J. Hazell; Katerina Sam; Rachakonda Sreekar; Samson Yama; Wulan Koagouw; Alan J. A. Stewart; Mika R. Peck

doi:10.1002/ece3.9835

journal article Open Access Feb 01, 2023

Bird preferences for fruit size, but not color, vary in accordance with fruit traits along a tropical elevational gradient

Richard J. Hazell

Katerina Sam

Rachakonda Sreekar

Samson Yama Wulan Koagouw

Alan J. A. Stewart

Mika R. Peck

Ecology and Evolution Vol. 13 No. 2 · Wiley

View at Publisher Save 10.1002/ece3.9835

Abstract

AbstractBirds constitute one of the most important seed dispersal agents globally, especially in the tropics. The feeding preferences of frugivorous birds are, therefore, potentially of great ecological importance. A number of laboratory‐based and observational studies have attempted to ascertain the preferences of certain bird species for certain fruit traits. However, little attention has been paid to community‐wide preferences of frugivorous birds and the impact this may have on fruit traits on a broader scale. Here, we used artificial fruits of different colors and sizes to investigate community‐wide fruit trait preferences of birds at three sites along an elevational gradient in Papua New Guinea. We recorded attack rates on artificial fruits as visible impressions made by a bird's beak during a feeding attempt. We also measured the colors and sizes of real fruits at each site, and the gape widths of frugivorous birds, allowing for comparisons between bird feeding preferences and bird and fruit traits. Regardless of elevation, red and purple fruits were universally preferred to green and attacked at similar rates to one another, despite strong elevational patterns in real fruit color. However, elevation had a significant effect on fruit size preferences. A weak, non‐significant preference for large fruits was recorded at 700 m, while medium fruits were strongly preferred at 1700 m and small fruits at 2700 m. These patterns mirror those of both real fruit size and frugivorous bird gape width along the gradient, suggesting the potential for selective pressure of birds on fruit size at different elevations.

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Details

Published: Feb 01, 2023
Vol/Issue: 13(2)
License: View

Authors

R

Richard J. Hazell

Department of Evolution, Behaviour and Environment, School of Life Sciences University of Sussex Brighton UK

K

Katerina Sam

Biology Centre of Czech Academy of Sciences Institute of Entomology Ceske Budejovice Czech Republic; Faculty of Science University of South Bohemia Ceske Budejovice Czech Republic

R

Rachakonda Sreekar

Biology Centre of Czech Academy of Sciences Institute of Entomology Ceske Budejovice Czech Republic

S

Samson Yama

New Guinea Binatang Research Centre Madang Papua New Guinea

W

Wulan Koagouw

National Research and Innovation Agency Central Jakarta Indonesia

A

Alan J. A. Stewart

Department of Evolution, Behaviour and Environment, School of Life Sciences University of Sussex Brighton UK

M

Mika R. Peck

Department of Evolution, Behaviour and Environment, School of Life Sciences University of Sussex Brighton UK

Cite This Article

Richard J. Hazell, Katerina Sam, Rachakonda Sreekar, et al. (2023). Bird preferences for fruit size, but not color, vary in accordance with fruit traits along a tropical elevational gradient. Ecology and Evolution, 13(2). https://doi.org/10.1002/ece3.9835

Bird preferences for fruit size, but not color, vary in accordance with fruit traits along a tropical elevational gradient

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