Exploitation of floral resources on Sparattosperma leucanthum (Bignoniaceae): foraging activity of the pollinators and the nectar and pollen thieves

Polatto, Leandro Pereira; Chaud-Netto, José; Dutra, João Cloves Stanzani; Alves, Valter Vieira

doi:10.1007/s10211-011-0116-7

Cited by 12 publications

(6 citation statements)

References 45 publications

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“…The high abundance of the pollinator T. angustula on the west side does not agree with the abundance pattern reported for bees, which usually prefer visits at high temperature and light periods with low relative humidity and wind speed (Polatto et al 2012). Possibly the low wind speed is the determining factor for a visit.…”

Section: (6)contrasting

confidence: 74%

Spatial Distribution of Phytophagous Insects, Natural Enemies, and Pollinators onLeucaena leucocephala(Fabaceae) Trees in the Cerrado

Damascena

Leite

Silva

et al. 2017

Florida Entomologist

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Leucaena leucocephala (Lam.) de Wit (Fabaceae) is widely used to regenerate degraded landscapes in tropical and subtropical regions and serves as a protein source for animals in agrosilvopastoral systems. Thus, our objective was to assess the spatial distribution of insects on the tree crown (vertical: upper, middle, and basal canopy; horizontal: north, south, east, and west) and leaf surfaces (adaxial and abaxial) of L. leucocephala. Phytophagous insects, natural enemies, and pollinators were quantified fortnightly in 20 trees for 2 yr. North-facing tree branches had the greatest numbers of phytophagous insects, natural enemies, and pollinators. Branches facing west had the most species-rich and biodiverse phytophagous and pollinator assemblages, whereas for natural enemies, species richness and biodiversity were greatest on branches facing north or south. The greatest numbers of individuals and highest levels of species richness of phytophagous insects, natural enemies, and pollinators were observed in the upper and middle parts of the L. leucocephala canopy. The most individuals and highest levels of species richness and biodiversity for phytophagous insects, natural enemies, and pollinators were observed on the abaxial face of L. leucocephala leaves. The species with the highest abundance and k-dominance (common or constant species) on L. leucocephala trees were the phytophagous insects Trigona spinipes F. (Hymenoptera: Apidae: Meliponinae) and Tropidacris collaris Stoll (Orthoptera: Romaleidae) and the natural enemies Camponotus sp.2 (Hymenoptera: Formicidae) and Brachymyrmex sp. (Hymenoptera: Formicidae). These results can inform strategies related to pest control and maintenance of natural enemies and pollinators in L. leucocephala plantations. Biopesticide application, for example, may be more effective at eliminating target organisms if directly applied on their preferred sites, and a targeted application can minimize negative effects for non-target organisms.

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Section: (6)contrasting

confidence: 74%

Spatial Distribution of Phytophagous Insects, Natural Enemies, and Pollinators onLeucaena leucocephala(Fabaceae) Trees in the Cerrado

Damascena

Leite

Silva

et al. 2017

Florida Entomologist

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“…Conforme observado em outras pesquisas (e.g. antonini et al 2005;aLMeida-soaRes et al 2010;PoLatto et al 2012) também seria esperado que as demais espécies de abelhas apresentassem correlação significativamente positiva com este fator abiótico. Contudo, a intensidade luminosa parece ser uma variável limitante ao forrageio das abelhas especialmente no início e no final do dia (kLeineRt et al 2009 dia, embora a maioria das correlações não tenha sido significativa (Tabela 3).…”

Section: A B E-issn 1983-0572unclassified

Influência dos Fatores Ambientais e da Quantidade de Néctar na Atividade de Forrageio de Abelhas em Flores de Adenocalymma bracteatum (Cham.) DC. (Bignoniaceae)

Silva

Dutra

Nucci³

et al. 2013

EntomoBrasilis

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Resumo. Este trabalho teve como objetivo avaliar a influência diária dos fatores ambientais e da quantidade de néctar na frequência de forrageio de abelhas em flores de Adenocalymma bracteatum (Cham.) DC. Para isso, foi demarcada uma área focal e registrada a atividade de forrageio das abelhas em um intervalo de 30 minutos para cada hora, das 6:00 às 17:30 h, nas flores da referida espécie vegetal durante quatro dias não consecutivos. Também foi avaliada a produção acumulativa de néctar e o seu consumo pelos visitantes no decorrer do dia. Dados referentes à temperatura, umidade relativa do ar, luminosidade e velocidade do vento foram anotados no início de cada hora. Para verificar se as frequências de forrageios das espécies de abelhas estavam correlacionadas com os fatores abióticos, foram realizados testes de correlação de Pearson. Dentre as espécies registradas, Oxaea flavescens Klug apresentou o maior número de forrageios. O número de forrageio no decorrer do dia não se manteve uniforme, o que faz acreditar que a atividade de forrageio das abelhas sofreu interferência dos fatores ambientais e da quantidade de néctar presente nas flores de A. bracteatum. Os polinizadores efetivos foram responsáveis por 51,6% do total de visitas por flor em A. bracteatum, enquanto os pilhadores de recursos perfizeram 33,1% e os furtadores de recursos realizaram somente 15,3% do total de visitas por flor. Houve ainda, forrageios de formigas e moscas. As formigas sugavam néctar extrafloral, possivelmente conferindo proteção contra pilhagem de néctar. Já as moscas pousavam na corola, mas não extraíram néctar nem pólen. Palavras-chave:Abelha; Furto/Pilhagem de néctar; Mamangavas; Polinizadores. Abstract. This study aimed to evaluate the daily influence of environmental factors and the amount of nectar in the foraging frequency of bees on flowers Adenocalymma bracteatum (Cham.) DC. For this, a focal area was demarcated and registered foraging activity of bees in a 30-minute break for every hour from 6:00 a.m. to 5:30 p.m., in the flowers of this plant species during four non-consecutive days. Also was analyzed the nectar production and its consumption by visitors throughout the day. Data relating to temperature, relative humidity, luminosity, and wind speed were recorded at the beginning of each hour. To check if the frequencies of foraging the bee species were correlated with abiotic factors, tests of Pearson correlation were performed. Among the species recorded, Oxaea flavescens Klug had the highest number of foraging. The number of foraging during the day did not remain uniform, which makes to believe that foraging activity of bees suffered interference from environmental factors and the amount of nectar present in flowers of A. bracteatum. The effective pollinators were responsible for 51.6% of total visits per flower in A. bracteatum, while the robber's resources totaled 33.1%, and only 15.3% of all visits were made by thieves' resource. There was also foraging of ants and flies. Nectar present around the flower was sucked by...

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“…The campanulate-shaped corolla of Z. tuberculosa, associated with the short distance from the stigma and anthers to the nectar chamber, allows this medium-sized bee with short tongue to access the nectar, while contacting the reproductive structures. When this bee reaches the nectar chamber, its eyes' region, its head and the dorsal portion of its thorax contacted the anthers and the stigma, characterizing nototribic pollination, as described for other Bignoniaceae (Guimarães et al, 2008;Polatto et al, 2012). Additionally, the placement of reproductive structures in Z. tuberculosa flowers favoured allogamy in this self-sterile species by the presence of approach and movement herkogamy (sensu Webb and Lloyd, 1986).…”

Section: Discussionmentioning

confidence: 69%

Floral biology, nectar secretion pattern and fruit set of a threatened Bignoniaceae tree from Brazilian tropical forest

Souza

Nepi

Machado

et al. 2017

Flora

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Zeyheria tuberculosa, a Bignoniaceae tree that occurs in a broad latitudinal range in Brazilian forests, is a threatened species of seasonal tropical forest. It is crucial to enhance the knowledge on this species’ floral biology, since interactions related to reproduction of plants are critical for the long term maintenance of their populations. Thus, we investigated the sexual reproduction and floral biology of Z. tuberculosa, focusing on nectar features, aiming to understand the ecological processes associated to this mutualistic plant-animal interaction in the current modified landscape. For this, we performed experiments under natural conditions and laboratory. All the evaluated plants were self-incompatible. Zeyheria tuberculosa was pollinated by Bombus pauloensis, a medium-sized bee, and offered hexose-rich nectar as resource. Flowers were also visited by small-sized bee species, Trigona spinipes, that acted as pollen thief, and Pseudoaugochlora pandora and P. graminae that acted as nectar thieves. These three bee groups exhibited temporal separation in the peak of visits throughout the day. The peak of pollinator visits occurred firstly, which may allow the pollinator to access nectar and pollen loads before they are exploited by thieves. However, bee pollinator visits were scarce, and this fact, associated to the self-incompatibility of Z. tuberculosa, may explain the low fruit set registered in the studied plants. It could be of special concern for this threatened species maintenance in the medium and long term, which depends on the offspring originated by sexual reproduction

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Exploitation of floral resources on Sparattosperma leucanthum (Bignoniaceae): foraging activity of the pollinators and the nectar and pollen thieves

Cited by 12 publications

References 45 publications

Spatial Distribution of Phytophagous Insects, Natural Enemies, and Pollinators onLeucaena leucocephala(Fabaceae) Trees in the Cerrado

Spatial Distribution of Phytophagous Insects, Natural Enemies, and Pollinators onLeucaena leucocephala(Fabaceae) Trees in the Cerrado

Influência dos Fatores Ambientais e da Quantidade de Néctar na Atividade de Forrageio de Abelhas em Flores de Adenocalymma bracteatum (Cham.) DC. (Bignoniaceae)

Floral biology, nectar secretion pattern and fruit set of a threatened Bignoniaceae tree from Brazilian tropical forest

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