Oil-collecting bee–flower interaction network: do bee size and anther type influence the use of pollen sources?

Abstract

International audienceAbstractPollination is an ecosystem service sustained by a differentiated use of resources among sympatric species. The bee size can influence the similarity in the use of resources, and poricidal anthers limit the access to pollen. Therefore, we evaluated the influence of body size and the anther type of pollen sources in Centridini–flower interaction network. We expected that the low niche overlap, promoted by these morphological parameters, would result in the formation of subgroups and lead to greater network resilience. We studied 15 bee species (n = 73 females) and identified their pollen sources. The bee size and anther type influenced the formation of subgroups in the community, and the larger bees used a higher proportion of flowers with poricidal anthers. Only the anther type influenced the robustness of the network. We conclude that the parameters analyzed influence both the use of resources by oil-collecting bees and their food niche breadth

Floral Resource Partitioning between Centris (Heterocentris) analis (Fabricius, 1804) and Centris (Heterocentris) terminata Smith, 1874 (Hymenoptera, Apidae, Centridini), in an Urban Fragment of the Atlantic Forest

“…In the present study, the low value of the niche overlap between C. analis and C. terminata at UFBA can be explained to the high frequency of the use of A. paucifolia (Fabaceae) by C. terminata in the nests established in February (2015). On the other hand, the high niche overlap observed at PZBGV between those species can be due to the body size, as reported by Rabelo et al (2015) for some oil-collecting species.…”

“…Moreover, these bees use the oil as construction material for nests (Vogel, 1974;Vinson & Frankie, 2000;Vieira-de-Jesus & Garófalo, 2000;Aguiar et al, 2003;Dórea et al, 2009Dórea et al, , 2010ab, 2013Rabelo et al, 2012). Studies performed in different biomes and orchards report these same three genera of Malpighiaceae as the main sources of pollen and oil for many species of Centris (Gaglianone, 2001;Ramalho & Silva, 2002;Rêgo et al, 2006;Vilhena & Augusto, 2007;Ramos et al, 2007;Dórea et al, 2009Dórea et al, , 2013Mello et al, 2013 and references therein;Santos et al,2013 and references therein; Rabelo et al, 2015). Fabaceae was the second most important botanical family found in the larval diet of C. analis and C. terminata.…”

“…Some authors have emphasized that the niche overlap between bee species can be influenced by the availability temporal of resources (Carvalho et al, 2013;Santos et al, 2013), by the resource abundance , and by the body size of the individuals exploiting the same resources (Rabelo et al, 2015). In the present study, the low value of the niche overlap between C. analis and C. terminata at UFBA can be explained to the high frequency of the use of A. paucifolia (Fabaceae) by C. terminata in the nests established in February (2015).…”

Estrutura de comunidades de abelhas e vespas que nidificam em cavidades preexistentes em áreas de Cerrado e Mata Estacional Semidecidual com especial referência ao nicho trófico das espécies de abelhas

“…A composição das famílias de plantas utilizadas pelas abelhas, de maneira geral, já foi citada na literatura em estudos sobre nicho alimentar e a maioria aparece sendo abundante, independente da metodologia aplicada ou da área de coleta (Aguiar, 2003;Aguiar & Santos, 2007;Cortopassi-Laurino et al, 2003;Menezes et al, 2012;Santos R. et al, 2013;Carvalho et al, 2014;Aidar et al, 2015;Diniz & Buschini, 2015;Rabelo et al, 2015;Aguiar et al, 2017;Lima et al, 2017;Ferreira & Absy, 2018;Rocha-Filho et al, 2018). O que difere entre os resultados é que, dependendo da área e do método de coleta, são vistos variados tipos dentro das famílias de plantas e diferentes importâncias dessas famílias para as abelhas.…”

“…Como é conhecido na literatura (Ramalho & Silva, 2002;Gaglianone, 2003;Rêgo et al, 2006;Mendes & Rêgo, 2007;Ramos et al, 2007;Vilhena & Augusto, 2007;Vieira et al, 2008;Bezerra et al, 2009;Dórea et al, 2009;2017;Mello et al, 2013;Santos R. et al, 2013;Rabelo, et al, 2015;Aguiar et al, 2017;Lima et al, 2017;Rocha-Filho et al, 2018) (Aguiar, 2003;Aguiar & Santos, 2007;Aguiar et al, 2013) provavelmente por eles terem utilizado a metodologia de coleta em flor, que é limitado pelo que o observador consegue ver florido além da eficiência de coleta de cada coletor também influenciar no resultado. Dorado et al (2011) Tetrapedia curvitarsis e T. diversipes tiveram maior sobreposição entre seus nichos chegando a mais de 90% no cerrado.…”