Sunbird hovering behavior is determined by both forager and resource plant

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F16%3A00465130" target="_blank" >RIV/67985939:_____/16:00465130 - isvavai.cz</a>

Alternative codes found

RIV/60077344:_____/16:00465130

Result on the web

<a href="http://onlinelibrary.wiley.com/doi/10.1111/btp.12345/abstract" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/btp.12345/abstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/btp.12345" target="_blank" >10.1111/btp.12345</a>

Result language

angličtina

Original language name

Sunbird hovering behavior is determined by both forager and resource plant

Original language description

The long-standing paradigm that pollination systems adapted to hovering birds evolved only in the New World was recently challenged by the discovery of hovering pollination by Old World specialized passerine pollinators. This raises the possibility that hovering pollination may evolve more easily than previously believed, given sufficient selective pressure on plant traits, on nectarivory, or both. We observed foraging behavior by the sunbird Cyanomitra oritis at flowers of the native Old World plant Impatiens sakeriana. We measured the length of pedicels and peduncles (PedPed length), which can make the flowers difficult to reach while the bird perches on the stem, and determined if it influenced sunbird hovering or perching at a flower. Detailed analyses of video recordings showed that sunbirds only hovered at flowers with a long PedPed, whereas they employed both foraging modes when an adequate perch was available. A hovering sunbird could deplete nectar in a shorter time than a perching one. The frequency of visits was not greater at flowers with longer PedPed or with more open I. sakeriana flowers in the vicinity. Our study provides evidence that sunbird behavior does not follow simple energetic models, and that some sunbird pollination systems in the Old World resemble highly specialized hummingbird systems in the New World much more than expected, especially the overall adaptation of the system to bird hovering.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EH - Ecology - communities

OECD FORD branch

—

Project

<a href="/en/project/GB14-36098G" target="_blank" >GB14-36098G: Center for tropical biology</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Biotropica

ISSN

0006-3606

e-ISSN

—

Volume of the periodical

48

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

687-693

UT code for WoS article

000388274700015

EID of the result in the Scopus database

2-s2.0-84978971384