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Effects of resource partitioning on the behavior and foraging activity of the Coppery headed emerald and the purple thro...

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Material Information

Title:
Effects of resource partitioning on the behavior and foraging activity of the Coppery headed emerald and the purple throated mountain gem hummingbirds (Trochilidae)
Translated Title:
Los efectos de reparto de recursos en el comportamiento y la actividad de forrajeo de los colibríes ( )
Physical Description:
Book
Language:
English
Creator:
Buffin, Nicholas, J
Publication Date:

Subjects

Subjects / Keywords:
Hummingbirds--Food   ( lcsh )
Birds--Behavior   ( lcsh )
Costa Rica--Puntarenas--Monteverde Zone   ( lcsh )
Colibríes--Alimento
Aves--Comportamiento
Costa Rica--Puntarenas--Zona de Monteverde
Tropical Ecology Spring 2010
Ecología Tropical Primavera
Genre:
Reports   ( lcsh )
Reports

Notes

Abstract:
Organisms specialize in order to decrease the energy required to do certain activities, such as forage and feed. This study was done to see whether altering the flower size affected the specialization of species in terms of abundance and aggression. The abundance increased for the Coppery Headed Emerald (CHE)(from 91-118) individuals as it became more specialized, and decreased for all other species being studied. The Purple Throated Mountain Gem (PTMG) (255-196) was also looked at, as it was present in the greatest abundance both before and after the straws were added. The manipulation also altered the hummingbird’s aggressive behavior. The CHE became less aggressive interspecifically (45-15 total number) (0.49-0.13 per individual), and stayed about the same intraspecifically (38-49 total number) (0.42-0.42 per individual). The PTMG became less aggressive interspecifically (170-89 total number) (0.3-0.17 per individual), and more so intraspecifically (153-143 total number) (0.41-0.65 per individual). The results showed that forced resource partitioning does cause changes in the abundance and behavior of these species of hummingbirds.
Abstract:
Los organismos se especializan con el fin de disminuir la energía requerida para realizar sus actividades, como forrajear y alimentarse. Este estudio fue realizado con el fin de ver si al alterar el tamaño de la flor afecta la especialización de las especies en términos de abundancia y agresión. La abundancia aumentó para Elvira cupreiceps (de 91 -118 individuos), y disminuyó para todas las demás. La abundancia de Lampornis calolaemus disminuyó considerablemente (255-196), antes del tratamiento era la especie más abundante. Las manipulaciones también afectaron el comportamiento agresivo de los colibríes. La agresión interspecífica disminuyó para Elvira cupreiceps (45-15 total) (0.49-0.13 por individual) y se mantuvo constante intraespecificamente (153-143 total) (0.41-0.65). Para Lampornis calolaemus la agresión interspecífica disminuyo (170-89 total) (0.3-0.17 por individuo), también lo hizo la intraespecífica (153-143 total) (0.41-0.65 por individual). Los resultados demuestran que la partición de nicho forzada causa cambios en la abundancia y comportamiento agresivo de las especies.
Language:
Text in English.
General Note:
Born Digital

Record Information

Source Institution:
University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
usfldc doi - M39-00312
usfldc handle - m39.312
System ID:
SFS0001481:00001


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Full Text
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Los efectos de reparto de recursos en el comportamiento y la actividad de forrajeo de los colibres
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Effects of resource partitioning on the behavior and foraging activity of the Coppery headed emerald and the purple throated mountain gem hummingbirds (Trochilidae)
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c 2010-05
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Born Digital
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Organisms specialize in order to decrease the energy required to do certain activities, such as forage and feed. This study was done to see whether altering the flower size affected the specialization of species in
terms of abundance and aggression. The abundance increased for the Coppery Headed Emerald (CHE)(from 91-118) individuals as it became more specialized, and decreased for all other species being studied. The Purple Throated Mountain Gem (PTMG) (255-196) was also looked at, as it was present in the greatest abundance both before and after the straws were added. The manipulation also altered the hummingbirds aggressive behavior. The CHE became less aggressive interspecifically (45-15 total number) (0.49-0.13 per individual), and stayed about the same intraspecifically (38-49 total number) (0.42-0.42 per individual). The PTMG became less aggressive interspecifically (170-89 total number) (0.3-0.17 per individual), and
more so intraspecifically (153-143 total number) (0.41-0.65 per individual). The results showed that forced resource partitioning does cause changes in the abundance and behavior of these species of hummingbirds.
Los organismos se especializan con el fin de disminuir la energa requerida para realizar sus actividades, como forrajear y alimentarse. Este estudio fue realizado con el fin de ver si al alterar el tamao de la flor afecta la especializacin de las especies en trminos de abundancia y agresin. La abundancia aument para Elvira cupreiceps (de 91 -118 individuos), y disminuy para todas las dems. La abundancia de Lampornis calolaemus disminuy considerablemente (255-196), antes del tratamiento era la especie ms abundante. Las manipulaciones tambin afectaron el comportamiento agresivo de los colibres. La agresin interspecfica disminuy para Elvira cupreiceps (45-15 total) (0.49-0.13 por individual) y se mantuvo constante intraespecificamente (153-143 total) (0.41-0.65). Para Lampornis calolaemus la agresin interspecfica disminuyo (170-89 total) (0.3-0.17 por individuo), tambin lo hizo la intraespecfica (153-143 total) (0.41-0.65 por individual). Los resultados demuestran que la particin de nicho forzada causa cambios en la abundancia y comportamiento agresivo de las especies.
546
Text in English.
650
Hummingbirds--Food
Birds--Behavior
Costa Rica--Puntarenas--Monteverde Zone
4
Colibres--Alimento
Aves--Comportamiento
Costa Rica--Puntarenas--Zona de Monteverde
653
Tropical Ecology Spring 2010
Ecologa Tropical Primavera
655
Reports
720
CIEE
773
t Monteverde Institute : Tropical Ecology
856
u http://digital.lib.usf.edu/?m39.312



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