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
Main Authors: | , |
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Format: | Artículo de revista biblioteca |
Language: | English |
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Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
2020-06-09T15:24:09Z
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Subjects: | Pollinators visit, floral traits, seed output, fitness, |
Online Access: | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-66432006000100004 https://bibliotecadigital.infor.cl/handle/20.500.12220/29488 |
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dig-infor-cl-20.500.12220-294882020-06-09T15:24:09Z EFFECT OF DENSITY AND FLOWER SIZE ON THE REPRODUCTIVE SUCCESS OF NOTHOSCORDUM GRAMINUM (ALLIACEAE) Molina-Montenegro,Marco A Cavieres,Lohengrin A Pollinators visit floral traits seed output fitness 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 2006-01-01 2020-06-09T15:24:09Z 2020-06-09T15:24:09Z Artículo de revista https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-66432006000100004 https://bibliotecadigital.infor.cl/handle/20.500.12220/29488 en 10.4067/S0717-66432006000100004 info:eu-repo/semantics/openAccess text/html Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción Gayana. Botánica v.63 n.1 2006 |
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Pollinators visit floral traits seed output fitness Pollinators visit floral traits seed output fitness Molina-Montenegro,Marco A Cavieres,Lohengrin A EFFECT OF DENSITY AND FLOWER SIZE ON THE REPRODUCTIVE SUCCESS OF NOTHOSCORDUM GRAMINUM (ALLIACEAE) |
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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 floral traits seed output fitness |
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) |
publisher |
Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción |
publishDate |
2020-06-09T15:24:09Z |
url |
https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-66432006000100004 https://bibliotecadigital.infor.cl/handle/20.500.12220/29488 |
work_keys_str_mv |
AT molinamontenegromarcoa effectofdensityandflowersizeonthereproductivesuccessofnothoscordumgraminumalliaceae AT caviereslohengrina effectofdensityandflowersizeonthereproductivesuccessofnothoscordumgraminumalliaceae |
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1767600443587821568 |