Spatial and temporal distribution of floral rewards within the capitula: the case of Hyalis argentea (Asteraceae)
Background and aims: Differential resource allocation to attraction, reward, and sexual functions has been observed at capitula level of derived species of Asteraceae. Heterogamous capitula contain a combination of pistillate, staminate or sterile and perfect florets, thus rewarding and sexual funct...
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| Autores principales: | , , , , |
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| Formato: | Artículo revista |
| Lenguaje: | Inglés Español |
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Sociedad Argentina de Botánica
2019
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| Materias: | |
| Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/23577 |
| Aporte de: |
| id |
I10-R325-article-23577 |
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| record_format |
ojs |
| institution |
Universidad Nacional de Córdoba |
| institution_str |
I-10 |
| repository_str |
R-325 |
| container_title_str |
Boletín de la Sociedad Argentina de Botánica |
| language |
Inglés Español |
| format |
Artículo revista |
| topic |
Asteraceae capitulum phenology Hyalis argentea nectar pollen. Asteraceae fenología capítulos Hyalis argentea néctar polen. |
| spellingShingle |
Asteraceae capitulum phenology Hyalis argentea nectar pollen. Asteraceae fenología capítulos Hyalis argentea néctar polen. Camina, Julia L. Tourn, Elian Andrada, Ana C. Pellegrini, Cecilia Ashworth, Lorena Spatial and temporal distribution of floral rewards within the capitula: the case of Hyalis argentea (Asteraceae) |
| topic_facet |
Asteraceae capitulum phenology Hyalis argentea nectar pollen. Asteraceae fenología capítulos Hyalis argentea néctar polen. |
| author |
Camina, Julia L. Tourn, Elian Andrada, Ana C. Pellegrini, Cecilia Ashworth, Lorena |
| author_facet |
Camina, Julia L. Tourn, Elian Andrada, Ana C. Pellegrini, Cecilia Ashworth, Lorena |
| author_sort |
Camina, Julia L. |
| title |
Spatial and temporal distribution of floral rewards within the capitula: the case of Hyalis argentea (Asteraceae) |
| title_short |
Spatial and temporal distribution of floral rewards within the capitula: the case of Hyalis argentea (Asteraceae) |
| title_full |
Spatial and temporal distribution of floral rewards within the capitula: the case of Hyalis argentea (Asteraceae) |
| title_fullStr |
Spatial and temporal distribution of floral rewards within the capitula: the case of Hyalis argentea (Asteraceae) |
| title_full_unstemmed |
Spatial and temporal distribution of floral rewards within the capitula: the case of Hyalis argentea (Asteraceae) |
| title_sort |
spatial and temporal distribution of floral rewards within the capitula: the case of hyalis argentea (asteraceae) |
| description |
Background and aims: Differential resource allocation to attraction, reward, and sexual functions has been observed at capitula level of derived species of Asteraceae. Heterogamous capitula contain a combination of pistillate, staminate or sterile and perfect florets, thus rewarding and sexual functions are performed by different kinds of florets and at different times. Such spatial and temporal distribution of rewards within the capitula is not as clearly established in species with homogamous capitula, where all florets are perfect and produce pollen and nectar. We evaluated the spatial and temporal distribution of floral rewards in homogamous capitula of Hyalis argentea. M&M: We compared the floral phenology, the number of pollen grains and nectar volume and concentration between ray and disk florets, and registered the foraging behaviour of floral visitors. Results: Capitula have a centripetal and alternate flowering pattern and they were visited by bees, ants, butterflies, moths, beetles and thrips, but pollinated mainly by Apis mellifera. We did not find a temporal pattern in the offer of rewards within the capitula, but we do find a spatial pattern in nectar volume increasing from outer to inner florets. Conclusions: This spatial variability in nectar quantity could impact pollinator behavior and thus enhance outcrossing likelihoods improving sexual reproduction in this self-incompatible species. |
| publisher |
Sociedad Argentina de Botánica |
| publishDate |
2019 |
| url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/23577 |
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AT caminajulial spatialandtemporaldistributionoffloralrewardswithinthecapitulathecaseofhyalisargenteaasteraceae AT tournelian spatialandtemporaldistributionoffloralrewardswithinthecapitulathecaseofhyalisargenteaasteraceae AT andradaanac spatialandtemporaldistributionoffloralrewardswithinthecapitulathecaseofhyalisargenteaasteraceae AT pellegrinicecilia spatialandtemporaldistributionoffloralrewardswithinthecapitulathecaseofhyalisargenteaasteraceae AT ashworthlorena spatialandtemporaldistributionoffloralrewardswithinthecapitulathecaseofhyalisargenteaasteraceae AT caminajulial distribucionespacialytemoraldelasrecompensasfloralesdentrodeloscapituloselcasodehyalisargenteaasteraceae AT tournelian distribucionespacialytemoraldelasrecompensasfloralesdentrodeloscapituloselcasodehyalisargenteaasteraceae AT andradaanac distribucionespacialytemoraldelasrecompensasfloralesdentrodeloscapituloselcasodehyalisargenteaasteraceae AT pellegrinicecilia distribucionespacialytemoraldelasrecompensasfloralesdentrodeloscapituloselcasodehyalisargenteaasteraceae AT ashworthlorena distribucionespacialytemoraldelasrecompensasfloralesdentrodeloscapituloselcasodehyalisargenteaasteraceae |
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2024-09-03T22:49:15Z |
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2024-09-03T22:49:15Z |
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I10-R325-article-235772019-12-14T13:45:48Z Spatial and temporal distribution of floral rewards within the capitula: the case of Hyalis argentea (Asteraceae) Distribución espacial y temoral de las recompensas florales dentro de los capítulos: el caso de Hyalis argentea (Asteraceae) Camina, Julia L. Tourn, Elian Andrada, Ana C. Pellegrini, Cecilia Ashworth, Lorena Asteraceae capitulum phenology Hyalis argentea nectar pollen. Asteraceae fenología capítulos Hyalis argentea néctar polen. Background and aims: Differential resource allocation to attraction, reward, and sexual functions has been observed at capitula level of derived species of Asteraceae. Heterogamous capitula contain a combination of pistillate, staminate or sterile and perfect florets, thus rewarding and sexual functions are performed by different kinds of florets and at different times. Such spatial and temporal distribution of rewards within the capitula is not as clearly established in species with homogamous capitula, where all florets are perfect and produce pollen and nectar. We evaluated the spatial and temporal distribution of floral rewards in homogamous capitula of Hyalis argentea. M&M: We compared the floral phenology, the number of pollen grains and nectar volume and concentration between ray and disk florets, and registered the foraging behaviour of floral visitors. Results: Capitula have a centripetal and alternate flowering pattern and they were visited by bees, ants, butterflies, moths, beetles and thrips, but pollinated mainly by Apis mellifera. We did not find a temporal pattern in the offer of rewards within the capitula, but we do find a spatial pattern in nectar volume increasing from outer to inner florets. Conclusions: This spatial variability in nectar quantity could impact pollinator behavior and thus enhance outcrossing likelihoods improving sexual reproduction in this self-incompatible species. Introducción y objetivos: Una asignación diferencial de recursos entre la función de atracción, recompensa y sexual ha sido observada en capítulos de especies derivadas de Asteraceae. Los capítulos heterógamos están compuestos por flores pistiladas, estaminadas o estériles y perfectas, con lo cual las funciones sexual y de recompensa son realizadas por diferentes tipos de flores y en distintos momentos. Esta distribución espacial y temporal de las recompensas dentro del capítulo no es tan clara en especies con capítulos homógamos, donde todas las flores son perfectas y producen polen y néctar. Aquí evaluamos la distribución espacial y temporal de las recompensas florales en los capítulos homógamos de Hyalis argentea. M&M: Comparamos la fenología floral, el número de granos de polen y la concentración y volumen de néctar entre las flores marginales y centrales, y registramos el comportamiento de forrajeo de los visitantes florales. Resultados: Los capítulos tienen un patrón de floración centrípeto y también alterno y son visitados por abejas, hormigas, mariposas, polillas, escarabajos y trips, siendo Apis mellifera su principal polinizador. No encontramos un patrón temporal en la oferta de recompensas dentro de los capítulos, pero sí un patrón espacial en el volumen de néctar que aumenta desde las flores marginales hacia las del centro del capítulo. Conclusiones: Dicha variabilidad espacial en la cantidad de néctar podría afectar el comportamiento de forrajeo de los polinizadores y así aumentar las probabilidades de polinización cruzada, mejorando la reproducción sexual de esta especie autoincompatible. Sociedad Argentina de Botánica 2019-03-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf text/html https://revistas.unc.edu.ar/index.php/BSAB/article/view/23577 10.31055/1851.2372.v54.n1.23577 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 54 No. 1 (2019): March; 17-27 Boletín de la Sociedad Argentina de Botánica; Vol. 54 Núm. 1 (2019): Marzo; 17-27 Boletín de la Sociedad Argentina de Botánica; v. 54 n. 1 (2019): Marzo; 17-27 1851-2372 0373-580X 10.31055/1851.2372.v54.n1 eng spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/23577/23361 https://revistas.unc.edu.ar/index.php/BSAB/article/view/23577/27672 Derechos de autor 2019 Boletín de la Sociedad Argentina de Botánica |