01802nas a2200229   4500008004100000022001400041245011200055210006900167300001200236490000700248520108200255653002501337653001801362653002501380653002601405653001901431653002201450100001801472700001701490700001601507856004901523       2009                        eng d  a1916-280400aFlowering period, thermogenesis, and pattern of visiting insects in Arisaema triphyllum (Araceae) in Quebec0 aFlowering period thermogenesis and pattern of visiting insects i  a324-3290 v873 aJack-in-the-Pulpit (Arisaema triphyllum (L.) Torr.) is a perennial forest herb of southern Canada and the eastern United States. The flowering periods of male and female inflorescences in relation to the temperature of the inflorescence and the activity pattern of visiting insects were studied in one population in western Montreal Island (Quebec, Canada). The flowering period of A. triphyllum was long (20 d in male and female plants), which is unusual in temperate Aroideae. This floral trait could have evolved secondarily as an adaptation to increase pollination efficiency under highly variable weather conditions at high latitude. In male and female plants, no significant temperature increase of the appendix was recorded. The warming effect of sunlight during the day could be sufficient for the emission of the attractive odour. Two Dipteran families, the Mycetophilidae and the Cecidomyiidae, were the most frequent insect visitors of A. triphyllum. Our observations showed that odour production is linked with the pollination activity beginning with insect visits.10aappendix temperature10aCecidomyiidae10alatitudinal gradient10along flowering period10aMycetophilidae10atemperate climate1 aBarriault, I.1 aGibernau, M.1 aBarabé, D.  uhttps://sciaroidea.myspecies.info/node/4392602121nas a2200253   4500008004100000022001400041245011300055210006900168300001200237490000700249520135600256653001201612653002701624653002601651653001901677653001601696653001701712653002101729100001801750700001601768700001701784700001701801856004901818       2010                        eng d  a1435-860300aPollination ecology and reproductive success in Jack-in-the-pulpit (Arisaema triphyllum) in Québec (Canada)0 aPollination ecology and reproductive success in Jackinthepulpit   a161-1710 v123 aPollination ecology and reproductive success of Jack-in-the-pulpit (Arisaema triphyllum) were studied in two natural populations in Québec, Canada. Individual A. triphyllum plants can be of three types: male, female or bisexual. In both populations studied, the presence of bisexual inflorescences was not negligible (13%), where ‘female’ and ‘male’ bisexual plants were categorised according to the relative number of stamens and ovaries. ‘Male bisexual’ plants produce only pollen and ‘female bisexual’ plants produce only fruit. Hence, A. triphyllum is a true dioecious plant, as each plant only reproduces through either the male or the female function. ‘Female bisexual’ plants were equivalent to female plants in terms of visitation rate by insects, fructification rate and production of berries and seeds. Neither agamospermy in female plants nor self-pollination in ‘female bisexual’ plants was found, thus A. triphyllum relies on insects for cross-pollination. Despite the long flowering cycle, a low visitation rate was documented: only 20–40% of inflorescences were visited, according to gender, by a mean of 1.5 insects. In this study, Mycetophilidae represented the most generically diversified and abundant family, as well as the most efficient insect pollinator, especially the genera Docosia and Mycetophila.10aAraceae10abisexual inflorescence10adeceptive pollination10aMycetophilidae10apollen load10aThysanoptera10avisitation rates1 aBarriault, I.1 aBarabé, D.1 aCloutier, L.1 aGibernau, M.  uhttps://sciaroidea.myspecies.info/node/43925