The efficiency of bees in pollinating ephemeral flowers of  Jacquemontia bracteosa (Convolvulaceae)

Santos, Silvia Karla Dias dos; Gimenes, Miriam

doi:10.1590/1678-4766e2016025

Cited by 5 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When considering both foraging behavior and visitation rates, the likely pollinators of A. siamensis are stingless bees (Meliponini), blue-banded bees (Amegilla), and skipper butterflies (particularly U. folus). These results are consistent with previous research, as many species in the morning glory family are pollinated by bees and butterflies [12,13,17,30,[33][34][35][36][37][38][39][40][41][42][43]. Stingless bees are often abundant in tropical pollinator assemblages [44][45][46], including in Thailand [47][48][49], and many tropical species of morning glory are known to be pollinated by stingless bees, such as Ipomoea carica, I. grandifolia, and I. nil [36]; I. aquatica [43]; I. wolcottiana [12]; I. hieronymi [50]; Merremia aegyptia [33]; M. macrocalyx [20]; and M. dissecta var edentada [37].…”

Section: Pollinator Observationssupporting

confidence: 93%

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

Jirabanjongjit

Traiperm

Sando³

et al. 2021

Plants

View full text Add to dashboard Cite

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.

show abstract

Section: Pollinator Observationssupporting

confidence: 93%

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

Jirabanjongjit

Traiperm

Sando³

et al. 2021

Plants

View full text Add to dashboard Cite

show abstract

“…The pollination process depends on the adjustment of floral and of visitor traits. Among these traits, morphology and behavior are related to the contact of visitors with the anthers and stigmas of flowers during the resource collection, and this has consequences for the pollination efficiency (Pick & Schlindwein 2011;Santos & Gimenes 2016; may affect the occurrence and quality of pollination (Gimenes et al, 1993(Gimenes et al, , 1996Bloch et al, 2017). Several plant reproductive events happen at specific times of the day, which may be the most propitious moment for pollination to occur.…”

Section: Introductionmentioning

confidence: 99%

“…Daily activity patterns of plant-pollinator interactions can be of particular interest when plants have ephemeral flowers (e.g., that last less than 12 hours) because the short exposure time of the reproductive structures limits the floral visitor activity time (Terada et al, 2005;Pick & Schlindwein, 2011, Santos & Gimenes, 2016Araujo et al, 2018). Some plants have ephemeral flowers like those of the genus Ipomoea (Convolvulaceae) whose most common pollination syndrome is melitophilia.…”

Section: Introductionmentioning

confidence: 99%

The light intensity mediates the pollination efficacy of a Caatinga morning glory Ipomoea bahiensis (Convolvulaceae)

Gimenes¹,

Araujo²,

Medina³

2021

Sociobiology

Self Cite

View full text Add to dashboard Cite

Pollination is an ecological process that relies on the matching traits of flower visitors and flowers. Morphology, behavior, and temporal patterns play essential roles in mediating the interactions between plants and floral visitors. This study analyzed the temporal aspects of visitors and flowers interaction and the possible adjustment between both organisms. We used Ipomoea bahiensis and its flower visitors as a model system. We evaluated the visitor frequency on the flowers throughout the day, flower opening and closing times, pollen availability and stigma receptivity. We also evaluated the highest fruit production time during the flower longevity was analyzed, and the time of highest pollinator activity, related to climatic factors. Among the floral visitors, bees, especially Melitoma spp., Apis mellifera, and Pseudaugochlora pandora were the most frequent visitors, presenting regular visits synchronized with the flower opening and closing times, which were also regular. This system was influenced mainly by light intensity. Besides, these bees were very active during the times of the highest fruit production. These data indicate the presence of temporal patterns for both the bees and the visited plants, and synchronization between them, being the light intensity as a modulator of the rhythms of bees and plant, confirming the importance of the temporal adjustments for pollination efficiency.

show abstract

“…These included examining the full range of floral visitors in a natural community [7][8][9][10][11][12][13]; analysis of identity, placement, and quantity of pollen grains on a visitor's body and observation of their foraging behavior [14], examining the number of pollen grains transported [7,15,16], the degree of pollen removal [17], the amount of pollen deposited on the stigma [12,18], or devising index values by supplementing behavioral data with the abundance of flower visitors [19][20][21][22][23]. Some researchers have correlated this with the number of pollinator visits or their visitation rate [8,9,13,[24][25][26][27][28][29][30][31], while others have combined the behavioral observations of flower visitors with the pollen loads they deposit on the receptive stigmas [27,32,33]. Likewise, some researchers have designated the seed set efficiency as the pollination efficiency [5,8,[34][35][36][37], while others have correlated seed set with the number of deposited pollen grains [7,15,27,…”

Section: Introductionmentioning

confidence: 99%

Some Unresolved Issues of Measuring the Efficiency of Pollinators: Experimentally Testing and Assessing the Predictive Power of Different Methods

Sihag

2018

International Journal of Ecology

View full text Add to dashboard Cite

Knowledge of efficiency of pollinators is valuable in the derivation of (i) the degree of mutualism specialization of a flower visitor in the natural plant communities, (ii) the optimum number of pollinators needed for the maximum pollination in a plant population, and (iii) the pollinator risk assessment in the sustainable agriculture. Earlier researchers used many direct and indirect methods for measuring the pollination efficiency (PE) of flower visitors. However, a great ambiguity exists in the usage of this terminology that necessitated its fresh scrutiny. I tested the available three standard methods afresh to find the efficiency of pollinators. These included comparing the (i) number of pollen grains removed and deposited by the visitors; (ii) seed set resulting from a single and the multiple visits of the visitors; and (iii) “pollen transfer efficiency (PTE)” derived from the foraging behavior and abundances of the visitors. Observations were recorded on the visitors of four plant species in an agroecosystem of Northwest India. These plants represented a wide variety of the floral types across the angiosperms. The first two methods, namely, the “number of pollen grains removed and deposited” and the “seed set resulting from a single and the multiple visits,” were appropriate in finding differences between the efficiency ranks of the pollinators of those flowers where the number of deposited pollen grains was less than the number of ovules in the ovary. However, these two methods completely failed in situations where exactly reverse condition of pollen grains and ovules existed. Thus, these two methods of measuring the PE of visitors had limited approach and lacked a universal application over the entire angiosperm taxa. On the other hand, use of “pollen transfer efficiency”, derived from the foraging behavior and abundance of the visitors, seemed to have an edge over the other two methods as this was helpful in finding differences between the efficiency ranks of the pollinators of plants in all the three situations tested in this study. However, validation of all the three methods through the plant reproductive potential seemed to be an integral confirmatory step for drawing inferences about the efficiency of pollinators.

show abstract

The efficiency of bees in pollinating ephemeral flowers of Jacquemontia bracteosa (Convolvulaceae)

Cited by 5 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 light intensity mediates the pollination efficacy of a Caatinga morning glory Ipomoea bahiensis (Convolvulaceae)

Some Unresolved Issues of Measuring the Efficiency of Pollinators: Experimentally Testing and Assessing the Predictive Power of Different Methods

Contact Info

Product

Resources

About