02486nas a2200301 4500008004100000245011000041210006900151260001200220300001200232490000800244520162600252653001101878653001301889653002201902653001401924653001201938653002301950653001601973653001601989653002702005653001502032100001502047700001802062700001702080700002002097700001402117856005302131 2012 eng d00aPollination biology of four sympatric species of Habenaria (Orchidaceae: Orchidinae) from southern Brazil0 aPollination biology of four sympatric species of Habenaria Orchi c08/2012 a141-1560 v1703 a
"The pollination process and breeding system of the sympatric Habenaria johannensis, H. macronectar, H. megapotamensis and H. montevidensis was documented for native populations from Rio Grande do Sul, Brazil. All species investigated offer a nectar reward (mean values of total sugars ranging from 18 to 26%) concealed in a spur. Habenaria montevidensis is pollinated by butterflies (Hesperiidae, especially of the genus Urbanus) that carry pollinaria on their eyes; the other three species are pollinated by Sphingidae. Habenaria johannensis is pollinated by the moths Manduca rustica and M. sexta that carry the pollinaria at the base of the proboscis. Habenaria macronectar is pollinated by the moths Eumorpha labrusca [sic] and M. cf. lucetius, and these bear pollinaria between the palpi. Habenaria megapotamensis is pollinated by moths of M. cf. lucetius that bear the pollinaria on the proboscis. All species studied are selfâcompatible, but pollinator dependent. They also displayed high reproductive success (ranging from 69.48 to 97.40%) and male efficiency factors slightly higher than 1, suggesting that at least one flower was pollinated for each flower acting as pollen donor. At the study sites, the investigated Habenaria spp. are isolated (in terms of pollination) by a set of factors that includes differing floral morphologies, different pollinators and/or different pollinarium placement on the pollinator."
10aBRAZIL10aEUMORPHA10aFLORAL MORPHOLOGY10aHABENARIA10aMANDUCA10aNECTAR COMPOSITION10aORCHIDACEAE10aPOLLINATION10aPOLLINATOR SPECIFICITY10aSPHINGIDAE1 aPedron, M.1 aBuzatto, C.R.1 aSinger, R.B.1 aBatista, J.A.N.1 aMoser, A. uhttps://doi.org/10.1111/j.1095-8339.2012.01285.x