, Manoa Lahatriniavo Faliarivola * 1
, Mention Zoologie et Biodiversité Animale, Faculté des Sciences, vol.906
, Field Museum of Natural History, Chicago -Field Museum of Natural History, 1400.
, Madagascar Insect herbivory on native and alien plants in Iceland, BP, vol.3972, p.358
, Ecological Characterization of the vegetation of Ravenala madagascariensis and Sticherus flagellaris invasive species in Betampona Nature Reserve, p.359
, Ecological characterization and evaluation of the production of Ravenala madagascariensis Sonn. in the savoka of East Ranomafana and its surroundings (Brickaville district), Noëlson Rolland Randrianantenaina
, Distribution of the invasive species Nicotiana glauca R.C. Graham on recent lava fields. Evaluation of the degree of invasion and proposals for control, Agustín Naranjo-Cigala
, Quantify invasion levels by alien plant species
, Dominique Strasberg, vol.6
, Centre de coopération internationale en recherche agronomique pour le développement (CIRAD) -7 chemin de l'IRAT 97410, vol.97400
, Office national des forêts (ONF) -Boulevard de la Providence, vol.97400
, , vol.97436
, Département de La Réunion -2 rue de la source, vol.97488
, Groupement pour la Conservation de l'Environnement et l'Insertion Professionnelle (GCEIP) -54 bis Route de la Ligne Paradis, vol.97410
, Université de La Réunion -15 Avenue René Cassin, Sainte-Clotilde 97715, Réunion, Réunion Remoteness promotes the biological invasions on islands worldwide
, Holger Kreft 2,4, Pablo García-Díaz, vol.5
,
, The Czech Academy of Sciences, Institute of Botany, Department of Invasion Ecology -CZ-252 43 Pruhonice
, Ecology, vol.10
, BIK-F), 60325 Frankfurt
, Nicolas Maihota, vol.7
, BPA5, 98848 Nouméa cedex
,
, , vol.98713, 20981.
, BP, vol.80
, BP, vol.80
,
,
,
, Larval surveys were conducted in June (red-backed cutworm) and August (broom moth and satyr pug) by checking individual plants for herbivory and larvae for 20 minutes. Moreover, a 50-m transect line with randomly placed 0.25 m2 quadrats was used to further assess plant cover and larval abundance of the red-backed cutworm. Adult surveys occurred in August for the red-backed cutworm using pheromone traps that attract male adults. Results indicate that from 2015-2017 the larval abundance of red-backed cutworms ranged from 0-31 larvae/site. Sites with Nootka lupine had the highest larval abundance, but it was not significantly greater than in sites with lyme grass. The abundance of male adults of red-backed cutworm, varied greatly among years regardless of host plant. Overall, 65 males/site were found in 2015, whereas in 2016 and 2017 less than 1 male/site. Red-backed cutworm herbivory on alien plants included Nootka lupine, rutabagas (Brassica napobrassica), and carrots (Daucus carota). Herbivory was also found on five native plants including lyme grass. Broom moth herbivory occurred on alien plants such as Nootka lupine, rutabagas, rapeseed (B. napus), carrots, and on at least seven native plants. Broom moth herbivory on horticultural crops are new host records. These results highlight the importance of longterm monitoring to assess herbivory dynamics of native insects and their interactions with agricultural systems. Keywords: agriculture, insect herbivory, native plants * Speaker ? Corresponding author: mlt@hi.is An analysis of global trait spaces of birds on islands, Ana Maria Bastidas Urrutia, Iceland Insect herbivory dynamics are changing in high latitudes, including in islands like Iceland. Several Icelandic moths such as the red-backed cutworm (Euxoa ochrogaster), broom moth (Melanchra pisi), and satyr pug
, Intraspecific variability of functional and chemical leaf traits of the endemic Acacia heterophylla along three elevational soil gradients in Réunion island (Mascarenes), Pierre-André Wagner
, 366 Variability of hydration traits in the Ramalina decipiens group (Ramalinaceae, lichenized Ascomycota): towards unraveling their adaptive role, Miguel Blázquez, p.367
, 368 Functional traits of vascular plants on islands across spatial scales, Thalita Arruda
, Intraspecific variability of functional and chemical leaf traits of the endemic Acacia heterophylla along three elevational soil gradients in Réunion island
, Claudine Ah-Peng ?, vol.1
, France Genomic structure of Black lemur populations and a long term conservation program at the Ampasindava Peninsula, north-western Madagascar, Mihaja Fanomezana Ratsoavina, CS 92003, 97744 Saint-Denis Cedex 9
, Predictive habitat models integrating anthropic pressures to aid conservation of a rare species on Reunion island, the Mascarene petrel, p.373
, Assessment of frugivorous bird populations in a naturally fragmented landscape by acoustic monitoring (Reunion, Mascarenes), Louis Maigné, p.374
, Monitoring terrestrial arthropod fauna for habitat knowledge and conservation in Réunion island
,
, Conservatoire Botanique National de Mascarin: an essential tool for knowledge, preserving and assisting decisions on the most endangered plants and habitats of La Réunion, Mayotte and IIes Eparses, Christophe Lavergne, p.377
, 380 Vegetation characterization, effect of prescribed fire and forage quality in insular savannas, Saving the Swamper: research and efforts for conservation of the endemic and critically endangered Utila Spiny-tailed iguana
, Biodiversity of terrestrial arthropods in Réunion island, p.382
, Conservatoire Botanique National de Mascarin: an essential tool for knowledge, preserving and assisting decisions on the most endangered plants and habitats of La Réunion
, Arnaud Rhumeur 3 , Bertrand Mallet 3 , Camille Danger 3, Sebastien Traclet, vol.3
, Conservatoire Botanique National et CPIE de Mascarin, vol.97436
, Ruelle Chamodeau-Route Nationale 2 -Coconi 97670
, Conservatoire Botanique National et CPIE de Mascarin (CBN-CPIE Mascarin) -2 rue du Père Georges 97436 Saint-Leu
, Ecology on Islands Contents Mangrove ecology on an undisturbed atoll: diversity, structure and changes in extent over 30 years on Aldabra, p.384
, Vertical distribution of birds in different dry forest types of western Madagascar, Jeanne Arline Rajaonarivelo
, Dioecy on the Canary Islands. Sex-ratio and sexual dimorphism in laurel forest trees, Mercedes Vidal-Rodríguez
, 388 Correlates of the distribution of microendemic species in New Caledonia, Maram Caesar, Changes in plant and soil microbial diversity along gradients of land management in São Miguel (Azores)
, Ecological release and the impact of urbanization on bird communities in mainland and island avifaunas in the Caribbean basin, p.390
, When it's hot and dry, fig wasps easily die, Kei Gabrielle Crisostomo, p.391
, Comparative study of the floral resources used by the native honeybee Apis mellifera unicolor Latreille by melissopalynological approach in 2 natural forest ecosystems of the South-West Indian Ocean islands: Ranomafana (Madagascar) and Mare Longue (Réunion), Tsiory Mampionona Rasoloarijao
, Ontogenetic variation in the effectiveness of Gallotia galloti as a seed disperser: implications for the conservation of the thermo-sclerophyllous shrubland of Tenerife, Raquel Rodríguez-Izquierdo, vol.393, p.384
, Mangrove ecology on an undisturbed atoll: diversity, structure and changes in extent over 30 years on Aldabra
, Gabriela Schaepman-Strub, vol.5
, IEU) -Winterthurerstrasse, vol.190
, Seychelles Islands Foundation -PO Box 853
, IEU) -Winterthurerstrasse, vol.190
, Jeanne Arline Rajaonarivelo * ? 1,2 , Aristide Andrianarimisa 1,3 , Marie Jeanne Raherilalao 1,2 , Steven M, vol.2, p.4
, Madagascar 2 Association Vahatra -BP 3972, Antananarivo, vol.906
, United States Dioecy on the Canary Islands. Sex-ratio and sexual dimorphism in laurel forest trees, Field Museum of Natural History -1400 South Lake Shore Drive
, José María Fernandéz-Palacios, vol.2
, Universidad de La Laguna -C/ Padre Herrera s/n Apartado Postal 456 38200
, Philippe Grandcolas, vol.1
, Université des Antilles Pôle Guadeloupe -45, rue Buffon 75005 -Paris, France Evolution on Islands Contents Independent phylogenetic origins of populations of the frog Mantidactylus ambreensis in the Montagne d'Ambre massif, northern Madagascar, Safidy Malala Rasolonjatovo, ESPE Université des Antilles Pôle Guadeloupe -45, rue Buffon 75005
, The lichen flora of the MIOI (Madagascar and Indian Ocean Islands): results and perspectives, Nicolas Magain
, 399 Diversity of aphyllous Vanilla species in the south-west Indian Ocean region: a challenge for orchid taxonomy, evolution and conservation research, Cathucia Andriamihaja, Evolution of dioecism in Hawaiian Psychotria species
, Genetic traits affect the occurence and speed of island radiations -insights from an individual-based model
, Crossing the speciation threshold: evolution in a complex archipelago, FionnÓ Marcaigh
, Species delimitation and morphological evolution in two New Caledonian endemic genera of Papilionoideae (Fabaceae)
, Intra-island assembly of soil biodiversity: habitat filtering and micro-endemicity across space and habitats
, Morphologically "diskinkt": comparing island populations of skinks in the Comoros archipelago
, Towards a methodological unification and theoretical synthesis in Island Biodiversity Genomics: the iBioGen consortium, Víctor Noguerales, p.407
, 408 A new multilocus phylogeny of the endemic Scincinae lizards of Madagascar reveals their biogeographic history and provides insight into their fossorial evolution
, Heritability and evolvability of morphological traits of the honeybee Apis mellifera in tropical islands from the Mascarene archipelago, p.410
, Genetic diversity associated with anagenesis and cladogenesis in Robinson Crusoe island (Juan Fernández Archipelago, Chile) and its use in conservation strategies
, Japan 2 Department of Land and Natural Resources, State of Hawaii -3060 Eiwa Street, Okinawa College -Henoko 905, vol.306
, United States 4 National Tropical Botanical Garden -3530 Papalina Road, Kalaheo, HI 96741, United States 5 University of Hawai'i at M?noa -1890 East-West Rd, Honolulu, HI 96822, United States Species delimitation and morphological evolution in two New Caledonian endemic genera of Papilionoideae (Fabaceae), vol.96720
, Julie Zalko * ?, vol.1
, Muséum national d'Histoire naturelle (MNHN) -Institut de Systématique,Évolution, Biodiversité, UMR 7205 ISYEB MNHN -57 rue Cuvier, vol.39, p.75005
, New Caledonia Towards a methodological unification and theoretical synthesis in Island Biodiversity Genomics: the iBioGen consortium
, Víctor Noguerales * ? 1 , Emmanouil Meramveliotakis 1 , Paula Arribas, vol.2, p.4
, Homisland-IO: a homogeneous land cover over the small islands of the Indian Ocean
, Christophe Révillion * ?, vol.1
,
, Télédétection et Information Spatiale (UMR TETIS) -Centre de Coopération Internationale en Recherche Agronomique pour le Développement : UMR91 -CYROI
, and produced at the SEAS-OI Station. We used an object-based image analysis method to identify the 11 major classes of land cover / land use of these tropical islands. This methodology together with a good knowledge of the field has enabled us to achieve an overall accuracy of 86%, making it an operational product. These products have already been used in various projects, including epidemiology and health geography (Lept-OI, TROI, ISSE-Mayotte, etc) to describe the distribution and habitat of some vectors of diseases (mainly mosquitoes and rodents), a necessary condition for analyzing the risk of transmission of these diseases to humans. Homisland-IO is freely accessible through a web portal and thus available for future uses. Keywords: land cover, remote sensing, object, based image analysis, small island, 5 Preah Monivong Blvd (93), 2012.
, Stéphanie Sorby *, vol.1
, Université de la Réunion -IRD La Réunion CS 41095 2 rue Joseph Wetzell Parc technologique universitaire 97495 Sainte Clotilde Cedex, France Patterns and drivers of coral reef resilience at Aldabra atoll (Seychelles)
, Why is fine-scale thermal structure the key to the foraging success of little penguins?, Emmanuelle Barreau
, Depredation mitigation device for pelagic longline fisheries: the PARADEP project, Njaratiana Rabearisoa
, Physical and biological drivers of herbivory on subtidal reefs of tropical oceanic islands
, Does global change enhance jellyfish population over the Reunion Island coral reefs? A comparison between, Charline Frelin, 2006.
, Does climate change affect coral and hydroids reproduction? 10 years of monitoring in fire and scleractinian corals in Réunion island, Océane Febvre, p.422
, Genomics of adaptation on islands
, Negative impacts of drifting FADs in the EEZ of French Polynesia, Marc Taquet, p.424
, Influence of post-settlement events on coral population structure: a multi-scale analysis along a latitudinal gradient, Arnaud Guerbet
, 426 A shark Reunion: environmental DNA assessment of an oceanic island, Chloé Fernandez, the Mascarene petrel
, Why is fine-scale thermal structure the key to the foraging success of little penguins?
, Yan Ropert-Coudert, vol.1, issue.2
, But they are dynamic structure in space and time, tending to get mixed and disappear under stormy conditions. In parallel, there are marked individual differences in the rate of prey encounter by little penguins. We thus hypothesized that daily differences in foraging strategies of individual penguins could reflect water column disturbance in their foraging zone. To evaluate this, we combined satellite oceanography and little penguin tracking data (n=20 birds) during the chick guard stage in 2018, a season of low reproductive success. We observed shortterm water column perturbations during this period and, as predicted, penguins' foraging performances was substantially affected. We found an increase in distance travelled from the colony almost three times the average distance when feeding chicks. It was concurrent to a decrease in dive duration, depth, and prey encounter rates when the water column was more mixed. This change was accompanied by a deterioration of the body mass difference between and after a trip. Prey may have become more widely dispersed in the water column making them challenging targets for penguins. Mixed waters regimes are expected to become more frequent due to more stormy days under climate change, Phillip Island hosts a mega-colony of little penguins (Eudyptula minor ), making them good bioindicator of the marine ecosystem in Bass Strait, Australia. Little penguins forage better
, Depredation mitigation device for pelagic longline fisheries: the PARADEP project
, Njaratiana Rabearisoa * ?, vol.1
, Institut de Recherche pour le Développement (IRD) -Institut de recherche pour le développement [IRD] -IRD, Station IFREMER Avenue Jean Monnet, CS, vol.30171, p.34203
, Centre National de la Recherche Scientifique : UMR7372 -405 Route de Prissé la Charrière, 79360 Villiers-En-Bois, France 3 ENEZ DU -REUNIMER -Magasin, vol.20
, It will be tested in Reunion Island on board commercial pelagic longliners. The second sub-objective is to acoustically monitor the depredation process. Hydrophones and accelerometers will be deployed on the fishing gear along with the devices. This will allow to detect toothed whale presence in the vicinity of the longline, identify the involved species and analyze their acoustic behavior when they interact (or not) with the devices. The capacity building objective of PARADEP is to enlarge the research community working on mitigation of negative interactions between marine mammals and fisheries. This will include workshops organization and supervision of interns. The communication objective of PARADEP is to share the resulting knowledge to the public, political managers, stakeholders, scientists and fishermen. This will be done by the construction of a dedicated website and the participation to workshops, conferences and meetings. The last objective of PARADEP is to economically assess the loss due to toothed whale depredation impacting the PLFs of Reunion Island. This will allow to assess the position of the device in the market of fisheries equipment, based on its price. PARADEP is funded by the European Funds for Maritime Affairs and Fisheries (FEAMP), and is due to last 30 months, Depredation in marine systems is defined as the damage or removal of fish or bait from fishing gear by predators. The long term objective of the PARADEP project is to reduce toothed whale depredation impacting pelagic longline fisheries (PLFs), 2006.
, Graciane Berrocq-Irigoin, vol.1, p.1
, Faculté des Sciences et Technologies -UMR ENTROPIE -CS 92003, 97744 Saint Denis, vol.17
,
, France Does climate change affect coral and hydroids reproduction? 10 years of monitoring in fire and scleractinian corals in Réunion island Océane Febvre * 1, Graciane Berrocq-Irigoin, vol.2, p.5
, Institut de Recherche pour le Développement -UNIVERSITE DE LA REUNIONFaculté des Sciences et Technolo15 Avenue René CasinBP 9200397744 ST DENIS CEDEX, vol.9
, Faculté des Sciences et Technolo15 Avenue René Cassin BP 9200397744 ST DENIS CEDEX, vol.9
, Ecologie marine tropicale dans les Océans Pacifique et Indien (ENTROPIE [Réunion]) -Institut de Recherche pour le Développement -Faculté des Sciences et Technologies 15 Avenue René Cassin CS 41095, 97495 Sainte Clotilde Cedex
, Faculté des Sciences et Technologies 15 Avenue René Cassin 97744 ST DENIS CEDEX 9, vol.1
,
, Portugal Whole genome sequencing projects can have a major relevance in understanding health, genetic disease, species adaptive evolution and molecular diversification. Currently, multiple species are having their genomes completely sequenced, from simple organisms, such as bacteria (e.g. microbiomes), to more complex taxa, such as higher vertebrates. This voluminous sequencing data generated across multiple organisms provides also the framework to better understand the genetic uniqueness of such species and related ones, allowing to explore the genetic changes underlining the evolution of diverse phenotypic and adaptive traits in species inhabiting marine islands. Here, recent results retrieved from comparative evolutionary genomic analyses of various endemic animal species living in marine islands (e.g. terrestrial mammals, birds, reptiles, marine snails) will be considered to exemplify the adaptive success of species (e.g. venom diversification, innovative phenotypic traits) into diverse islands environments and lifestyles. The findings pinpoint unique molecular products of critical relevance in species evolution, diversification and conservation, but also highlight genomic novelties (e.g. venom compounds) of importance for environmental and biomedical research
, BP, vol.7004
, French Polynesia 3 DRM -BP20, 98713
, Arnaud Guerbet * ? 1 , Mehdi Adjerdoud, vol.2
, LabEx CORAIL -Faculté des Sciences et Technologies, 97744 Saint Denis Cedex 9
, Ecologie marine tropicale des océans Pacifique et Indien (ENTROPIE [Perpignan]) -Institut de Recherche pour le Développement, LabEx CORAIL -52, avenue Paul Alduy, 68860 Perpignan Cedex, vol.9
, France Scleractinian coral communities often show strong dissimilarities between settlement patterns and the distribution and abundance of adult corals. The relative contribution of post-settlement events (e.g. competition, predation, facilitation and disturbances) on the structure of adult populations is still unclear. The purpose of this study is to assess the importance of post-settlement mortality, retention, positive and negative growth in determining the spatial patterns and abundance of adult corals with different of life history traits (e.g. Acropora, Pocillopora and Porites), LabEx CORAIL -Faculté des Sciences et Technologies, 97744 Saint Denis Cedex 9, p.2
, These mortality rates are similar among the three coral taxa, and did not show significant difference among habitat. The linear growth is higher in Lizard Island (16.0 mm.y-1) and Moorea (14.1 mm.y-1) than Grande Terre (5.0 mm.y-1), and higher for Acropora (16.0 mm.y-1) and Pocillopora (14.5 mm.y-1) than Porites (4.6 mm.y-1). Overall, demographic processes are dominated by mortality, retention and positive growth, whereas negative growth is less important. This study shows the seasonal variation of young coral demographic processes and the interannual variation especially at Moorea after cyclone Oli which has greatly decreased survival and linear growth at different scales. This study shows a more dynamic ecosystem in Moorea than Lizard Island and Grande Terre. Coral communities of Lizard Island and Grande Terre present a same structure (abundance and size class) but a different of dynamics. To conclude, most of demographic processes are governed by particular environmental conditions at biogeographic, insular and local scales of studies. Keywords: coral reef, juvenile coral, multiscale analysis, population dynamics, post settlement events * Speaker ? Corresponding author: arnaud.guerbet@hotmail.fr Reconstructing past vegetation cover on the Azores using pollen-based models, Grande-Terre (35.3%) than Lizard Island (44.7%) and Moorea (60.2%)
, 431 To what extent is the current spatial distribution of organisms shaped by past environmental dynamics?, Lake Funda (Flores Island, Azores): tracking human impacts in a remote island lake throughout the past millennium
, Reconstructing past vegetation cover on the Azores using pollen-based models
, Jacqueline Van Leeuwen, vol.4
, José María Fernandéz-Palacios, vol.11, p.14
, for Biodiversity and Ecosystem Dynamics / Biogeography and Macroecology group, pp.1749-1765
, Evolution and Environmental Changes (cE3c) / Azorean Biodiversity Group (cE3c) -Universidade dos Açores -Faculdade de Ciências Agrárias e do Ambiente
, Netherlands During the late Quaternary, climatic oscillations have resulted in major fluctuations in sea level and, correspondingly, changes in island area and isolation. We quantified sea-level driven changes in paleogeography of 178 islands worldwide and stored these new data in the Palaeo-Island and Archipelago Configuration (PIAC) database. We used these data to assess the role of past archipelago configurations in shaping the present-day distribution of endemic land snails and angiosperms. This was done by fitting linear mixed models for different archipelago configurations using the number of endemic and (nonendemic) native species as a response. Our online database shows that oceanic islands are dynamic entities: they emerge and submerge; they shrink and expand; they split and merge. The data also underlines that the present-day situation is exceptional: for most of the late Quaternary, islands were larger than today, and less isolated. Consistent across both studied groups, we found that patterns of single-island endemic species in particular are related with past environmental dynamics. Long-lasting * Speaker Restoration Ecology / Ecological Restoration Contents Natural recruitment of Scalesia pedunculata on Galápagos after control of invasive plants, 16 Institute for Biodiversity and Ecosystem Dynamics (IBED) -Kruislaan 318, 1098 SM Amsterdam
, Monitoring an endemic thermophilus woodland reforestation in Tenerife, Canary Islands, Francesco Rota
, Let the problem become the solution: using cost-effective, holistic ecological and horticultural approaches to conserving St Helena's rare cloud forest ecosystem, Lourens Malan
, Effects of habitat restoration on the seed dispersal ecosystem function in Seychelles
, Providing knowledge about seed germination ecology to boost establishment success in revegetation projects: case study of Heteropogon contortus, p.441
, 442 Impact of collecting seeds from black-and-white Ruffed lemurs feces on natural regeneration at Kianjavato forest fragments, SE Madagascar, Zafimahery Rakotomalala, Reproductive biology of Phelsuma guentheri (Reptilia: Gekkonidae) and the effects of habitat restoration on Round Island (Mauritius), Markus A. Roesch
, Monitoring an endemic thermophilus woodland reforestation in Tenerife, Canary Islands Reproductive biology of Phelsuma guentheri (Reptilia: Gekkonidae) and the effects of habitat restoration on Round Island
, , vol.3, p.4
, Ministry of Agro-Industry and Food Security -Reduit, vol.190
, Mauritian Wildlife Foundation (MWF) -Grannum Road
, On Ile aux Aigrettes, P. guentheri frequently use hardwood trees as nesting sites; but large hardwood trees are still rare on Round Island. Hence nest-site limitation may limit the abundance of P. guentheri geckos across Round Island. We here report preliminary findings of an ongoing investigation of egg-laying behaviour, nest site availability and incubation conditions for P. guentheri on Round Island; with a special focus on the potential role of the restoration of hardwood plant species. We recorded and followed the fate of 1443 eggs across 269 nesting sites. The majority of these were on Latania loddigesii palms (212 sites), with rock sites being second (36 sites), and the remaining sites on other substrates. While palms were most often chosen as nesting sites, the rock sites held more eggs per site (mean: 13.75) than those on palms (mean: 3.88). By the end of the field season, 744 eggs had hatched, and 56 failed. Communal nesting occurred on all substrates, but most often on rock. Eggs were laid in the early evenings, whereas they hatched throughout the day. We failed to find the expected importance of hardwood plants as nesting sites for P. guentheri on Round Island, possibly because hardwood plants are still relatively sparse on Round Island and many saplings are still small. Alternatively, the observed nest-site use on Ile aux Aigrettes does not reflect a preference, but is caused by the relatively low number of adult palms and missing rock overhangs on this island. Future studies on Round Island, when both adult palm-and hardwood forests will be available, would address this. Keywords: Phelsuma guentheri, island restoration, reproductive biology, species abundance, nest site selection * Speaker ? Corresponding author: markus.roesch@uzh.ch Social Sciences on Islands Contents Ecological restoration of the tropical semi dry forest in Réunion island: exploring dimensions of ecological awareness, Durrell Wildlife Conservation Trust -Les Augrès Manor, La Profonde Rue, Trinity, JE3 5BP, Jersey With no introduced predators, Round Island was the sole refuge for many Mauritian species. However, introduced goats and rabbits had major negative effects on the island
, Seabird-based tourism: a rising industry and new challenges for seabird islands, Martin Thibault
, Seabird-based tourism: a rising industry and new challenges for seabird islands
, BP, vol.73
, Institut de Recherche pour le Développement (IRD) -Institut de Recherche pour le Développement -Adresse du siège -Le Sextant 44
, Centre IRD de Nouméa 101 Promenade Roger Laroque, Anse Vata, BPA5 98848 Noumea cedex, Species interactions / Networks / Trophic Ecology Contents Flowers visited by Rousettus madagascariensis
, Judith Vololona, Réserve Spéciale d'Ankarana (Madagascar), p.449
, Frugivory and seed dispersal of endemic Malagasy baobabs after megafauna extinction, Seheno Corduant-Andriantsaralaza
, 451 Evolution of large flowers adapted to small pollinators in oceanic islands, The relative role of frugivore pigeons as seed dispersers on oceanic islands: a key ecosystem function
, Japanese wood pigeon as a potential inter-island seed disperser in Izu island chain in Japan, indicated by its diet and seasonal movement pattern, Haruko Ando, p.453
, Experimental removal of dominant plants alters the diversity of a network of flowervisiting insects, Karim Tighiouart, vol.454, p.449
, Flowers visited by Rousettus madagascariensis (Chiroptera: Pteropodidae) in the Réserve Spéciale d'Ankarana
, Judith Vololona * ? 1,2 , Steven M. Goodman, vol.2, p.3
, Madagascar 2 Association Vahatra -BP 3972, Mention Biologie et Ecologie Végétales, Domaine Sciences et Technologie, Université d'Antananarivo (MBEV) -BP 906, vol.101
, ) as they entered the cave day-roost before dawn. Immediately after capture, the rostrum of each bats was swabbed for traces of pollen, which were in turn identified using a flowering plant pollen catalog for the site. Thirteen plant taxa were identified from the swabs, five of which are exotic. Parkia madagascariensis (26.5%) and Capurodendron ankaranense (10.9%) were the most important native species visited; Eucalyptus spp. (16.9%) and Ceiba pentandra (7.2%) were the most important non-native visited. Female and male of Rousettus madagascariensi s showed different preferences for plants during the two seasons. Regardless of the plant species, both males and females showed preferences for small, white or yellow flowers, with numerous stamens and axillary floriferous branches, which represent chiropterophilic traits. It is assumed that R. madagascariensis may be responsible for the pollination of some of the plants visited, which included native and non-native species. Keywords: Ankarana, flowers visited, 60605, United States Old World fruit bats (Pteropodidae) are potential pollinators of different flowering plants, which they use as food resources. While information on the plants visited by the two largest endemic species of Malagasy pteropodids, 2016.
, Javier Romero * ?, vol.2, issue.3
, Astrofísico Fco. Sánchez, issue.3, p.38206
, Spain Experimental removal of dominant plants alters the diversity of a network of flower-visiting insects
, Most plants contain flowers, and important interactions occur in these organs. Many insects are flower visitors and are known to be affected by habitat loss, fragmentation, and changes in landscape structure, but few studies have experimentally tested how habitat loss alters the structure of flower-visiting insect communities.In this study we focused on thrips (Insecta: Thysanoptera) as a model system. Previous studies in Reunion have revealed that flowers of the following exotic plants species host highly diverse communities of flower-visiting thrips : Solanum mauritianum, Lantana camara, Ipomea indica. Here, we tested the hypothesis that elimination of S. mauritianum flowers (as an important habitat for adult thrips) will trigger changes in thrips communities in the other two plants.We established replicated communities involving the three plants, and in a paired design, S. mauritanicum flowers were eliminated or not. The effect of this treatment on thrips was assessed during one month, by estimating their abundance, richness (i.e. the number of species) and diversity (shanon and simpson indexes). A community of eleven native and exotic thrips species was found. The treatment did not have any effect on insect abundance or diversity, but it had an effect on richness: elimination of S. mauritianum flowers had a negative effect on the richness of the number of species found on L. camara, but not on I. indica. At the landscape level, we observed that both the proportion of sugarcane and habitat fragmentation correlated with thrips richness. These correlations, however, were only observed when S. mauritianum flowers were eliminated, and not in our controls. Although our study was performed on exotic plant species, we provide evidence that at a fine spatial scale, the loss of a plant species that hosts a large diversity of flower-visiting insects can have consequences that cascade to the community of insects inhabiting other plants. Future studies are needed to unveil whether similar effects occur in communities of non-exotic plants, France Plants form the base of complex communities on terrestrial ecosystems, and are the basic resource for insect herbivores and their associated natural enemies