Sunbird hovering behavior is determined by both forager and resource plant
Identifikátory výsledku
Kód výsledku v 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>
Nalezeny alternativní kódy
RIV/60077344:_____/16:00465130
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Sunbird hovering behavior is determined by both forager and resource plant
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Sunbird hovering behavior is determined by both forager and resource plant
Popis výsledku anglicky
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.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
EH - Ekologie – společenstva
OECD FORD obor
—
Návaznosti výsledku
Projekt
<a href="/cs/project/GB14-36098G" target="_blank" >GB14-36098G: Centrum pro tropickou biologii</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Biotropica
ISSN
0006-3606
e-ISSN
—
Svazek periodika
48
Číslo periodika v rámci svazku
5
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
7
Strana od-do
687-693
Kód UT WoS článku
000388274700015
EID výsledku v databázi Scopus
2-s2.0-84978971384