Three diurnal patterns of anthesis in Ipomoea carnea subsp. fistulosa (Convolvulaceae): Implications for temporal, behavioral and morphological characteristics of pollinators?

Paz, Joicelene Regina Lima da; Gimenes, Miriam; Pigozzo, Camila Magalhães

doi:10.1016/j.flora.2013.02.007

Cited by 13 publications

(15 citation statements)

References 19 publications

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“…integriuscula [16]; I. nil, Merremia aegyptia, and Jacquemontia evolvuloides [13]; I. carnea subsp. fistulosa [17]), and species with mixed mating systems (i.e., I. habeliana [18], Calystegia [19], M. macrocalyx [20]). Self-incompatibility is an important mechanism that promotes cross-pollination [21,22].…”

Section: Mating Systemmentioning

confidence: 99%

Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, Argyreia siamensis

Jirabanjongjit

Traiperm

Sando³

et al. 2021

Plants

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Argyreia siamensis is extremely rare, and very little is known about its reproduction. The species has colorful flowers that seem likely to attract pollinators, but population sizes are typically small (<30 individuals). To determine whether poor reproduction contributes to its rarity, we investigated its mating system and potential pollinators in two populations. We also examined the staminal trichomes and floral nectary to investigate their role in pollinator attraction. The mating system was assessed with a bagging experiment and pollinator visits were recorded with action cameras. Additionally, we tested the staminal trichomes and floral nectary for terpenes and flavonoids and examined floral nectary micromorphology via scanning electron microscope and compound light microscope. Our results reveal that A. siamensis is self-incompatible and dependent on pollinators; the western population was pollinated by bees (Meliponini and Amegilla), while the eastern population was mainly pollinated by skipper butterflies (Hesperiidae). Both staminal trichomes and the floral nectary appear to contribute to pollinator attraction through the presence of terpenes and flavonoids (in both secretory structures) and nectariferous tissue and nectarostomata (in the nectary). Our results indicate that A. siamensis has reliable and effective pollinators and that insufficient pollination is likely not a primary cause of its rarity.

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Section: Mating Systemmentioning

confidence: 99%

Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, Argyreia siamensis

Jirabanjongjit

Traiperm

Sando³

et al. 2021

Plants

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“…Flowers usually large, showy, and colorful of J. evolvuloides stand out from the surrounding vegetation and attract floral visitors as was noted by authors studying different genera of the Convolvulaceae (Kiill & Ranga, 2003;Kiill & Simão-Bianchini, 2011;Paz et al, 2013). The presence of UV-reflecting pigments in the corolla and anthers may also facilitate their location, especially among insects sensitive to those wavelengths, such as bees (Roubik, 1989).…”

Section: Discussionmentioning

confidence: 94%

The Roles of Bees and Hoverflies in the Pollination of Jacquemontia evolvuloides (Moric.) Meisn. (Convolvulaceae) in a Semiarid Region

2018

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Jacquemontia species are often found in disturbed areas, and their flowers are ephemeral and very attractive to insects. We investigated the interaction between the flowers of Jacquemontia evolvuloides and its visitors, with emphasis on potential pollinators, considering morphological, temporal, and behavioral aspects, between September/2009 and August/2010 in an anthropized area in Bahia State, Northeastern Brazil. Jacquemontia evolvuloides flowers are diurnal, ephemeral (approximately five to six hours duration), are present throughout the year, and offer nectar and pollen rewards. Because of the floral morphology of J. evolvuloides insect visitors have easy access to its resources, and its pollination could be considered generalized. While J. evolvuloides flowers are visited by several insects, only small bees (Augochlora spp.) and syrphids (Toxomerus spp.) appear to play a role in pollination of flowers. Although bees have been considered efficient pollinators of that plant, the significant presence of syrphids (considered occasional pollinators but showing high frequency visitation), may indicate their role as potential pollinators, especially when bees are not abundant in the fall/winter. As such, even in pollination systems that are considered generalized (with flowers allowing easy access to various visitor groups), visitor size may be an important factor for efficient pollination, especially when associated with high visitation frequencies.

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“…Ainda, segundo Haase (1999), seus propágulos germinam mesmo em campos que já sofreram intenso pisoteio por ovinos e caprinos e também em campos incendiados. As espécies do gênero Ipomoea, em geral, possuem flores que atraem vários visitantes (Paz et al, 2013), especialmente abelhas (Pick & Schlindwein, 2011). Apesar desses aspectos, é importante salientar que existem relatos de casos de intoxicação em caprinos, ovinos e bovinos da região nordeste do Brasil desde o século XIX (Armién et al, 2007;Oliveira et al, 2009), o que deve ser levado em consideração em áreas com a presença desses animais.…”

Section: Resultsunclassified

Seleção de espécies autóctones da Caatinga para a recuperação de áreas invadidas por algaroba

et al. 2015

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O objetivo do presente estudo foi avaliar a sociabilidade de espécies autóctones da Caatinga com a exótica invasora Prosopis sp. (algaroba) para o emprego em projetos de recuperação de áreas invadidas. Foram instaladas 20 parcelas de 100 m², onde todas as espécies lenhosas com altura ≥ 15 cm tiveram contabilizados o número de indivíduos. Para avaliar a associação das espécies nativas com a algaroba foi utilizado o coeficiente de Jaccard. Para inferir sobre a correlação de Prosopis sp. com os demais táxons, foi empregado o coeficiente de Pearson e para a categorização do desempenho das espécies nativas foi feita a média aritmética da somatória do índice de associação e do coeficiente de Pearson. Foram amostradas 28 espécies associadas a Prosopis sp., das quais 14 apresentaram pelo menos cinco indivíduos e estavam em mais de duas unidades amostrais. A espécie com melhor desempenho foi Lantana camara (0,62 – muito bom), seguida por Herissantia crispa (0,41 - bom), Cynophalla hastata (0,32 - médio), Ipomoea carnea e Celtis iguanaea (0,27 - médio) e Mimosa pseudosepiaria (0,2 - médio). Em vistas dos resultados obtidos e dos atributos ecológicos das espécies, conclui-se que as espécies listadas nesse estudo são as mais indicadas para o plantio consorciado em áreas invadidas por Prosopis sp.

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Three diurnal patterns of anthesis in Ipomoea carnea subsp. fistulosa (Convolvulaceae): Implications for temporal, behavioral and morphological characteristics of pollinators?

Cited by 13 publications

References 19 publications

Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, Argyreia siamensis

Pollination and Floral Biology of a Rare Morning Glory Species Endemic to Thailand, Argyreia siamensis

The Roles of Bees and Hoverflies in the Pollination of Jacquemontia evolvuloides (Moric.) Meisn. (Convolvulaceae) in a Semiarid Region

Seleção de espécies autóctones da Caatinga para a recuperação de áreas invadidas por algaroba

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