Interaction between visiting bees (Hymenoptera, Apoidea) and flowers of Ludwigia elegans (Camb.) hara (Onagraceae) during the year in two different areas in São Paulo, Brazil



Document title: Interaction between visiting bees (Hymenoptera, Apoidea) and flowers of Ludwigia elegans (Camb.) hara (Onagraceae) during the year in two different areas in São Paulo, Brazil
Journal: Brazilian journal of biology
Database: PERIÓDICA
System number: 000275712
ISSN: 1519-6984
Authors: 1
Institutions: 1Universidade Estadual de Feira de Santana, Departamento de Ciencias Biológicas, Feira de Santana, Bahia. Brasil
Year:
Season: Nov
Volumen: 63
Number: 4
Pages: 617-625
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Analítico
English abstract This study was designed to characterize the interactions between Ludwigia elegans flowers and visiting bees during two years in two areas 200 km apart, at the same latitude (approximately 22º48'S) but at different altitudes (Alumínio, 600 m, and Campos do Jordão, 1500 m), in the State of São Paulo, Brazil. As these flowers open simultaneously in the morning and lose their petals by sunset, interaction with bees occurs only during the photophase. Flowers of L. elegans were mainly visited by bees, the most frequent species being: Tetraglossula anthracina (Michener, 1989) (Colletidae), Rhophitulus sp. (Andrenidae), and Pseudagapostemon spp. (Halictidae), all considered specialized bees for collecting pollen and nectar from these flowers, as well as the generalist bee Apis mellifera Linnaeus, 1758 (Apidae). The specialist bees were temporally adjusted to the opening schedule of the flower, which occurs primarily in the morning, but shows a circannual variation. T. anthracina appears in both study areas, but only between December and April. The annual activity patterns of these specialist bees are synchronized to the phenology of L. elegans. Photoperiod and temperature cycles are suggested as the main synchronizers of both bees and plants
Portuguese abstract Este estudo foi proposto para caracterizar as interações entre as flores de Ludwigia elegans e as abelhas visitantes durante dois anos, em duas áreas distantes 200 km entre si, na mesma latitude (aproximadamente 22º48'S) mas em altitudes diferentes (Alumínio, 600 m, e Campos do Jordão, 1500 m), no Estado de São Paulo. Como as flores abrem simultaneamente de manhã e perdem as pétalas ao pôr-do-sol, a interação com as abelhas só acontece durante a fotofase. As flores de L. elegans foram principalmente visitadas por abelhas, sendo as mais freqüentes: Tetraglossula anthracina (Michener, 1989) (Colletidae), Rhophitulus sp. (Andrenidae) e Pseudagapostemon spp. (Halictidae), consideradas abelhas especializadas em coletar pólen e néctar nessas flores, bem como a abelha generalista Apis mellifera Linnaeus, 1758 (Apidae). As abelhas especialistas estavam temporalmente ajustadas aos horários de abertura da flor. A abertura da flor ocorre principalmente de manhã, mas mostra variação circanual. T. anthracina aparece em ambas as áreas, mas somente entre dezembro e abril. O padrão de atividade anual das abelhas especialistas está sincronizado com a fenologia de L. elegans. Os ciclos fotoperiódicos e de temperatura são sugeridos como os principais sincronizadores de ambas, abelhas e plantas
Disciplines: Biología
Keyword: Angiospermas,
Insectos,
Ludwigia elegans,
Onagraceae,
Rhophitulus,
Fotoperíodo,
Ritmo biológico,
Tetraglossula,
Pseudagapostemon,
Temperatura,
Abejas,
Hymenoptera
Keyword: Biology,
Angiosperms,
Insects,
Ludwigia elegans,
Onagraceae,
Rhophitulus,
Photoperiod,
Biological rhythms,
Tetraglossula,
Pseudagapostemon,
Hymenoptera
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