02058nas a2200241 4500008004100000245008600041210006900127300001200196490000700208520132000215653000901535653001001544653001101554653001301565653003001578653001401608100002601622700002201648700002101670700002101691700001901712856008501731 2013 eng d00aVertebrate pollination of the endemic Trochetia granulata (Malvaceae) on Réunion0 aVertebrate pollination of the endemic Trochetia granulata Malvac a353-3560 v293 a

The pollination ecology and breeding system of Trochetia granulata (Malvaceae), an endemic tree species from Réunion were studied. In 2010–2011, compatibility studies were conducted on a total of 154 flowers from 35 different individuals using three different hand pollination treatments: (a) autofertility, (b) self-pollination and (c) cross-pollination. During the period, we also studied the pollination ecology of T. granulata. During 48 h of video recordings, we tracked flower visits to T. granulata in six different sites and studied the behaviour of the visitors. The results from the hand-cross experiments show that T. granulata is self-compatible (60.8% fruit set) but cannot produce fruit (5.4% fruit set) without the visit of a pollen vector. During surveys, four different visitors were reported: the introduced honey bee (Apis mellifera), two endemic species of white-eye (Zosterops borbonicus borbonicus and Z. olivaceus) and the endemic Réunion day gecko (Phelsuma borbonica). This study documented a new case of vertebrate-pollination by lizard and birds in an insular context. These interactions might be linked to several uncommon floral traits of Trochetia species.

10aApis10agecko10aisland10aPhelsuma10aplant-animal interactions10aZosterops1 aLe Péchon, Timothée1 aSanchez, Mickaël1 aHumeau, Laurence1 aGigord, Luc, D B1 aZhang, Li-Bing uhttp://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=894869802283nas a2200229 4500008004100000245011300041210006900154300001200223490000700235520149700242653001101739653001701750653001601767653002601783653001401809653001601823100002601839700001101865700002501876700002101901856013101922 2009 eng d00aSystematics of Dombeyoideae (Malvaceae) in the Mascarene archipelago (Indian Ocean) inferred from morphology0 aSystematics of Dombeyoideae Malvaceae in the Mascarene archipela a519-5310 v583 a

The Mascarene Archipelago is characterized by remarkable fauna and flora, mainly due to its high rate of endemism. The Dombeyoideae Beilschm. is one of the most diversified groups of angiosperms in the Mascarenes with 22 species, 21 of which are endemic. We used parsimony analysis of morphological characters to examine the relationships between the endemic Dombeyoideae from the Mascarenes and the members of Dombeyoideae from Africa, Madagascar and Asia. A morphological matrix was created including 36 representative species and 42 characters. Among the most parsimonious trees (MPTs) those with the highest number of secondary homologies were identified. The Dombeyoideae from the Mascarenes are polyphyletic and split into nine clades. Trochetia appears monophyletic and more closely related to Eriolaena and Helmiopsis than to Dombeya. All Dombeya taxa are included in a clade together with Ruizia and Astiria, which makes Dombeya paraphyletic. In terms of breeding systems the Malagasy Dombeyoideae are hermaphroditic, whereas those of the Mascarenes are considered dioecious. The polyphyly of the Mascarene Dombeyoideae suggests that dioecy has been acquired several times. At least five colonization events from Madagascar to the Mascarene archipelago are inferred. The evolutionary history of two lineages of Mascarene Domeyoideae seems to be related to adaption to xeric habitats.

10aDioecy10aDombeyoideae10aMaHo Method10aMascarene Archipelago10aPhylogeny10aSystematics1 aLe Péchon, Timothée1 aCao, T1 aDubuisson, Jean-Yves1 aGigord, Luc, D B uhttp://www.jstor.org/discover/10.2307/27756889?uid=3738912&uid=367858501&uid=2129&uid=2&uid=70&uid=3&uid=60&sid=2110288601407300719nam a2200205 4500008004100000245009400041210006900135260004400204100002600248700002100274700002100295700002500316700001300341700002000354700001400374700001500388700001400403700001700417856007900434 2011 eng d00aLes Mahots des Mascareignes : base de connaissances sur les Dombeyoideae des Mascareignes0 aLes Mahots des Mascareignes base de connaissances sur les Dombey aSaint-DenisbUniversité de La Réunion1 aLe Péchon, Timothée1 aHumeau, Laurence1 aGigord, Luc, D B1 aPausé, Jean-Bernard1 aCaron, D1 aBaider, Claudia1 aGigord, P1 aGrosser, D1 aHansen, D1 aSevathian, J uhttp://mahots.univ-reunion.fr/sortie-du-livre-les-mahots-des-mascareignes/02337nas a2200277 4500008004100000020001400041022001400055245013600069210007000205300001200275490000700287520147100294653001101765653001601776653001701792653001401809653001301823100002601836700002501862700002501887700002101912700002301933700002301956700002101979856005902000 2013 eng d a1548-2324 a0363-644500aDombeya formosa (Malvaceae s.l.): A New Species Endemic to La Réunion (Indian Ocean) Based on Morphological and Molecular Evidence0 aDombeya formosa Malvaceae sl A New Species Endemic to La Réunion a424-4330 v383 a

Dombeya formosa (Malvaceae s.l. or Dombeyaceae), a new species endemic to La Réunion, is described and illustrated. The species is distinguishable by its ovate leaves with round or slightly cordate bases, round to lightly acute apices and glabrescent abaxial surfaces, subulate and persistent stipules, umbellate inflorescences, and acute apices of floral bracts. Dombeya formosa is morphologically close to Dombeya punctata Cav. but differs from it in having ovate leaves and acute apices on floral bracts. Dombeya formosa is also morphologically similar to D. ficulnea Baill. but can be distinguished from it by its persistent and subulate stipules as well as the glabrescent adaxial surface of its leaves. Our study, focusing on 16 quantitative floral characters, demonstrates that there is a clear morphological distinction between D. formosa, D. punctata, and D. ficulnea. In comparison to the other two species, Dombeya formosa possesses smaller flowers and additionally shows cryptic dioecy along with flower-size dimorphism between sexes. Amongst the Mascarene Dombeyoideae, it is the only species distributed up to an altitude of 2,100 m. The phylogenetic position of Dombeya formosa is consistent with the morphological features and locates the species within the clade endemic to La Réunion characterized by umbellate inflorescences.

10aDioecy10aDombeyaceae10aDombeyoideae10aPhylogeny10ataxonomy1 aLe Péchon, Timothée1 aPausé, Jean-Bernard1 aDubuisson, Jean-Yves1 aGigord, Luc, D B1 aHaevermans, Agathe1 aHaevermans, Thomas1 aHumeau, Laurence uhttp://www.bioone.org/doi/abs/10.1600/036364413X666732