EFFECT OF DENSITY AND FLOWER SIZE ON THE REPRODUCTIVE SUCCESS OF NOTHOSCORDUM GRAMINUM (ALLIACEAE)
The size, form and color are signals used by flowers to attract their pollinators. Large and showy color flowers usually receive higher pollinators visitation rates. According to the optimal forage theory, pollinators would tend to visit flower patches where they obtain the maximum reward regarding the energy expenditure in flower search. In high density patches, flowers are very close each other, hence, flower discrimination by pollinators would tend to be low. In low density patches, however, where the forage effort is greater, larger flowers are usually associated with higher rewards and would receive higher pollinators visitation achieving greater fitness than co-especifics with smaller flowers. In the present study we assessed the effects of flower density and size on the reproductive success (RS) of Nothoscordum gramineum. Four patches of different densities were delimited and the flowers size of the half of individuals at each patch was manually reduced. Results showed that RS was significantly greater in individuals with larger flowers. Additionally, density has a positive effect on RS, especially in large size flowers. Nevertheless, fruition success reached maximum values in patches of intermediate density. Individuals with cut flowers did not varied the RS with the variation of the density, suggesting that flower size is the most important attribute measured as advertisement by pollinators in N. gramineum. Our results do not support the hypothesis that in high density patches, flower displays have low importance.
Principais autores: | , |
---|---|
Formato: | Artículo de revista biblioteca |
Idioma: | English |
Publicado em: |
2006
|
Assuntos: | Pollinators visit, |
Acesso em linha: | https://repositorio.uchile.cl/handle/2250/120016 |
Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
id |
dig-uchile-cl-2250-120016 |
---|---|
record_format |
koha |
spelling |
dig-uchile-cl-2250-1200162023-01-19T07:33:10Z EFFECT OF DENSITY AND FLOWER SIZE ON THE REPRODUCTIVE SUCCESS OF NOTHOSCORDUM GRAMINUM (ALLIACEAE) EFECTO DE LA DENSIDAD Y TAMAÑO FLORAL SOBRE EL EXITO REPRODUCTIVO DE NOTHOSCORDUM GRAMINUM (ALLIACEAE) Molina Montenegro, Marco A. Cavieres, Lohengrin A. Pollinators visit The size, form and color are signals used by flowers to attract their pollinators. Large and showy color flowers usually receive higher pollinators visitation rates. According to the optimal forage theory, pollinators would tend to visit flower patches where they obtain the maximum reward regarding the energy expenditure in flower search. In high density patches, flowers are very close each other, hence, flower discrimination by pollinators would tend to be low. In low density patches, however, where the forage effort is greater, larger flowers are usually associated with higher rewards and would receive higher pollinators visitation achieving greater fitness than co-especifics with smaller flowers. In the present study we assessed the effects of flower density and size on the reproductive success (RS) of Nothoscordum gramineum. Four patches of different densities were delimited and the flowers size of the half of individuals at each patch was manually reduced. Results showed that RS was significantly greater in individuals with larger flowers. Additionally, density has a positive effect on RS, especially in large size flowers. Nevertheless, fruition success reached maximum values in patches of intermediate density. Individuals with cut flowers did not varied the RS with the variation of the density, suggesting that flower size is the most important attribute measured as advertisement by pollinators in N. gramineum. Our results do not support the hypothesis that in high density patches, flower displays have low importance. 2008-03-24T12:43:13Z 2008-03-24T12:43:13Z 2006 Artículo de revista Gayana Bot. 63(1): 93-98, 2006 0016-5301 https://repositorio.uchile.cl/handle/2250/120016 en application/pdf |
institution |
UCHILE CL |
collection |
DSpace |
country |
Chile |
countrycode |
CL |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-uchile-cl |
tag |
biblioteca |
region |
America del Sur |
libraryname |
Dirección de Servicios de Información y Bibliotecas de la UCHILE |
language |
English |
topic |
Pollinators visit Pollinators visit |
spellingShingle |
Pollinators visit Pollinators visit Molina Montenegro, Marco A. Cavieres, Lohengrin A. EFFECT OF DENSITY AND FLOWER SIZE ON THE REPRODUCTIVE SUCCESS OF NOTHOSCORDUM GRAMINUM (ALLIACEAE) |
description |
The size, form and color are signals used by flowers to attract their pollinators. Large and showy color flowers usually receive higher pollinators visitation rates. According to the optimal forage theory, pollinators would tend to visit flower patches where they obtain the maximum reward regarding the energy expenditure in flower search. In high density patches, flowers are very close each other, hence, flower discrimination by pollinators would tend to be low. In low density patches, however, where the forage effort is greater, larger flowers are usually associated with higher rewards and would receive higher pollinators visitation achieving greater fitness than co-especifics with smaller flowers. In the present study we assessed the effects of flower density and size on the reproductive success (RS) of Nothoscordum gramineum. Four patches of different densities were delimited and the flowers size of the half of individuals at each patch was manually reduced. Results showed that RS was significantly greater in individuals with larger flowers. Additionally, density has a positive effect on RS, especially in large size flowers. Nevertheless, fruition success reached maximum values in patches of intermediate density. Individuals with cut flowers did not varied the RS with the variation of the density, suggesting that flower size is the most important attribute measured as advertisement by pollinators in N. gramineum. Our results do not support the hypothesis that in high density patches, flower displays have low importance. |
format |
Artículo de revista |
topic_facet |
Pollinators visit |
author |
Molina Montenegro, Marco A. Cavieres, Lohengrin A. |
author_facet |
Molina Montenegro, Marco A. Cavieres, Lohengrin A. |
author_sort |
Molina Montenegro, Marco A. |
title |
EFFECT OF DENSITY AND FLOWER SIZE ON THE REPRODUCTIVE SUCCESS OF NOTHOSCORDUM GRAMINUM (ALLIACEAE) |
title_short |
EFFECT OF DENSITY AND FLOWER SIZE ON THE REPRODUCTIVE SUCCESS OF NOTHOSCORDUM GRAMINUM (ALLIACEAE) |
title_full |
EFFECT OF DENSITY AND FLOWER SIZE ON THE REPRODUCTIVE SUCCESS OF NOTHOSCORDUM GRAMINUM (ALLIACEAE) |
title_fullStr |
EFFECT OF DENSITY AND FLOWER SIZE ON THE REPRODUCTIVE SUCCESS OF NOTHOSCORDUM GRAMINUM (ALLIACEAE) |
title_full_unstemmed |
EFFECT OF DENSITY AND FLOWER SIZE ON THE REPRODUCTIVE SUCCESS OF NOTHOSCORDUM GRAMINUM (ALLIACEAE) |
title_sort |
effect of density and flower size on the reproductive success of nothoscordum graminum (alliaceae) |
publishDate |
2006 |
url |
https://repositorio.uchile.cl/handle/2250/120016 |
work_keys_str_mv |
AT molinamontenegromarcoa effectofdensityandflowersizeonthereproductivesuccessofnothoscordumgraminumalliaceae AT caviereslohengrina effectofdensityandflowersizeonthereproductivesuccessofnothoscordumgraminumalliaceae AT molinamontenegromarcoa efectodeladensidadytamanofloralsobreelexitoreproductivodenothoscordumgraminumalliaceae AT caviereslohengrina efectodeladensidadytamanofloralsobreelexitoreproductivodenothoscordumgraminumalliaceae |
_version_ |
1766396134616465408 |