Flower visitation of Passiflora apetala, P. auriculata and P. holosericea (Passifloraceae) by Pepsis aquila (Hymenoptera: Pompilidae)

Ramírez-Benavides, William; Jansen-Gonzàles, Sergio

doi:10.4081/fe.2018.286

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Passiflora L. is the most important genus of the Passifloraceae family, both numerically and economically, including some 600 species (Espinoza et al, 2018; Xing‐Da et al, 2019), with habits varying from lianas to shrubs and small trees (Killip, 1938). These species are widely distributed in the tropical regions of the Americas, Southeast Asia, Australia, and Pacific Islands (Araya et al, 2017; Pérez & d'Eeckenbrugge, 2017; Ramírez‐Benavides & Jansen‐Gonzàles, 2018). Brazil has a leading position regarding genetic resources of this genus, with 157 species, of which 87 are endemic, thus supplying a wide range of genetic resources that can be exploited in genetic improvement programs (Bernacci et al, 2020; Marostega et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Seed morphoanatomy of the genus PassifloraL. (Passifloraceae) by scanning electron microscopy and light microscopy

Silva

Souza

Junghans

et al. 2022

Microscopy Res & Technique

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Morphoanatomical analysis of seeds contributes to knowledge of the development of seedlings and identification of species, as well as supporting conservation studies. The conservation of the species belonging to the Passiflora genus is crucial due to of the threats to the genetic resources of these species. Thus, the objective of this study was to morphoanatomically characterize Passiflora seeds, verify possible injuries to the tissues after cryopreservation and thus contribute to the conservation strategies of the species of this genus. Initially, seeds of Passiflora coccinea, P. edulis, P. gibertii, P. maliformis, P. morifolia, P. setacea, P. suberosa, and P. tenuifila collected from the Passion Fruit Active Germplasm Bank of the Embrapa Cassava and Fruits research unit (Embrapa Mandioca e Fruticultura) were analyzed. Then, their length, width and thickness, shape of the base and tip, and ornamentations present on the body and edge of the seeds were evaluated. The seeds of the species were placed in cryotubes and immersed in liquid nitrogen to assess possible cryoinjuries. The tegument and tissues of the seeds were examined by scanning electron microscopy. The seeds had varied biometric data, with average values of 4.63 mm for length, 3.28 mm for width, and 1.51 mm for thickness. Six ornamentation types were observed: reticulate for the species P. coccinea; finely reticulate for P. edulis; foveolate reticulate for P. gibertii and P. setacea; alveolate reticulate for P. maliformis and P. tenuifila; coarsely reticulate for P. morifolia; and falsifoveolate reticulate for P. suberosa. Some seeds suffered tegument cracks due to the freezing in liquid nitrogen, but without physiological damages to the embryo and endosperm. The cryopreservation of the seeds in the presence of the tegument significantly reduced the cryoinjuries caused to the embryo. Cryopreservation can be promising for long-term conservation of passion fruit seeds.

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Section: Introductionmentioning

confidence: 99%

Seed morphoanatomy of the genus PassifloraL. (Passifloraceae) by scanning electron microscopy and light microscopy

Silva

Souza

Junghans

et al. 2022

Microscopy Res & Technique

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Bee and butterfly records indicate diversity losses in western and southern North America, but extensive knowledge gaps remain

Souther,

Sandor,

Sample

et al. 2024

PLoS ONE

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Pollinator losses threaten ecosystems and food security, diminishing gene flow and reproductive output for ecological communities and impacting ecosystem services broadly. For four focal families of bees and butterflies, we constructed over 1400 ensemble species distribution models over two time periods for North America. Models indicated disproportionally increased richness in eastern North America over time, with decreases in richness over time in the western US and southern Mexico. To further pinpoint geographic areas of vulnerability, we mapped records of potential pollinator species of conservation concern and found high concentrations of detections in the Great Lakes region, US East Coast, and southern Canada. Finally, we estimated asymptotic diversity indices for genera known to include species that visit flowers and may carry pollen for ecoregions across two time periods. Patterns of generic diversity through time mirrored those of species-level analyses, again indicating a decline in pollinators in the western U.S. Increases in generic diversity were observed in cooler and wetter ecoregions. Overall, changes in pollinator diversity appear to reflect changes in climate, though other factors such as land use change may also explain regional shifts. While statistical methods were employed to account for unequal sampling effort across regions and time, improved monitoring efforts with rigorous sampling designs would provide a deeper understanding of pollinator communities and their responses to ongoing environmental change.

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Flower visitation of Passiflora apetala, P. auriculata and P. holosericea (Passifloraceae) by Pepsis aquila (Hymenoptera: Pompilidae)

Cited by 2 publications

References 5 publications

Seed morphoanatomy of the genus PassifloraL. (Passifloraceae) by scanning electron microscopy and light microscopy

Seed morphoanatomy of the genus PassifloraL. (Passifloraceae) by scanning electron microscopy and light microscopy

Bee and butterfly records indicate diversity losses in western and southern North America, but extensive knowledge gaps remain

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