Tipos polínicos encontrados em esfingídeos (Lepidoptera, Sphingidae) em área de Floresta Atlântica do sudeste do Brasil: uso da palinologia no estudo de interações ecológicas

Ávila, Rubem Samuel de; Cruz-Barros, Maria Amélia Vitorino da; Corrêa, Angela Maria da Silva; Sazima, Marlies

doi:10.1590/s0100-84042010000300005

Cited by 7 publications

(1 citation statement)

References 9 publications

(10 reference statements)

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“…The non‐registration or the low frequency of visits to the cactus flowers studied is linked to nocturnal insects, which are typically difficult to observe (Ávila Junior et al . ), suggesting the need for greater sampling effort with less intrusive technologies, such as filming.…”

Section: Discussionmentioning

confidence: 99%

Pollination and reproductive system of synchronopatric species of Cactaceae (Cactoideae) subject to interspecific flow of pollen: an example of ecological adaptation in the Brazilian Chaco

et al. 2017

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Three synchronopatric Cactaceae species, Echinopsis rhodotricha, Harrisia balansae and Praecereus saxicola, have mostly nocturnal anthesis and similar flowers, characteristics that motivated us to perform a comparative study of reproductive ecology. Reproductive phenology was sampled monthly from December 2014 to November 2015. We describe floral biology, breeding system via pollination treatments and evaluate floral visitors from focal and filming observations. Pollen grains found on moth proboscis were compared among cactus species under light microscopy. We used fluorescent dye particles to test intra- and interspecific pollen flow. These three species have extended flowering with greater intensity in the wet season, causing high overlap. They have white and hypocrateriformis flowers that open at twilight or nightfall and last about 15 h. H. balansae seems to be self-incompatible, while E. rhodotricha presented self-compatibility. P. saxicola presented self-fertility, but most of the population seems to be self-incompatible. We suggest sphingophily for the three species, but only P. saxicola was visited by Manduca rustica (Sphingidae). However, we observed pollen grains of all three species on the proboscis of moths, especially M. rustica and M. sexta. Prolonged anthesis allowed bees (herein considered as secondary pollinators) to visit flowers of E. rhodotricha and P. saxicola. It can be concluded that the studied species share nocturnal and diurnal pollinators, suggesting interspecific pollen flow, which, however, could not be detected with fluorescent dye particles. In view of the low frequency of primary pollinators, it appears that these three species have different reproductive strategies, ensuring the fruiting and production of viable seeds.

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Section: Discussionmentioning

confidence: 99%

Pollination and reproductive system of synchronopatric species of Cactaceae (Cactoideae) subject to interspecific flow of pollen: an example of ecological adaptation in the Brazilian Chaco

et al. 2017

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Natural history as the foundation for researching plant-pollinator interactions: celebrating the career of Marlies Sazima

Bergamo,

Agostini,

Machado

et al. 2024

Flora

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Untangling the taxonomy and geographic distribution of Quararibea floribunda (Malvaceae: Malvoideae)

Ferreira,

Baumgratz,

Bovini

2024

Nordic Journal of Botany

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Quararibea floribunda, a species endemic to Brazil, is poorly studied taxonomically, and little is known about its ecology and conservation status. Since its publication in 1842, only a few studies have reported on its morphological circumscription, thus remaining as a complex in the taxonomy of Quararibea. In addition, little is known about its geographic distribution, which, according to most authors, is restricted to the Cerrado Biome, characterized mainly by its dry forests. Therefore, we herein review and clarify the morphological circumscription and distribution of Q. floribunda in different vegetation types, designate a lectotype, and recognize its conservation status as vulnerable (VU). The present study is based on analysis of protologues and further pertinent literature. Several herbaria were consulted, both in person and online. Fieldwork was done between 2017 and 2020 in different locations of midwestern and southeastern Brazil, mainly in dry forests of the Cerrado Biome. We confirm that Q. floribunda also occurs in the Atlantic Forest Biome and that it is not exclusive to the Cerrado Biome, as previously thought. All known populations in this biome inhabit humid habitats, and as such, they are closer to the vegetation of the Atlantic Forest Biome than the typical Cerrado dry forests. In addition to assessing the conservation status of Q. floribunda, we evaluate its nomenclatural history, leading to the designation of a lectotype, finally highlighting vegetative and floral diagnostic characters. A distribution map is provided, as well as a morphological comparative analysis between species with foliar domatia in extra‐Amazonian Brazil.

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Tipos polínicos encontrados em esfingídeos (Lepidoptera, Sphingidae) em área de Floresta Atlântica do sudeste do Brasil: uso da palinologia no estudo de interações ecológicas

Cited by 7 publications

References 9 publications

Pollination and reproductive system of synchronopatric species of Cactaceae (Cactoideae) subject to interspecific flow of pollen: an example of ecological adaptation in the Brazilian Chaco

Pollination and reproductive system of synchronopatric species of Cactaceae (Cactoideae) subject to interspecific flow of pollen: an example of ecological adaptation in the Brazilian Chaco

Natural history as the foundation for researching plant-pollinator interactions: celebrating the career of Marlies Sazima

Untangling the taxonomy and geographic distribution of Quararibea floribunda (Malvaceae: Malvoideae)

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