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Author Porth, I.; Scotti-Saintagne, C.; Barreneche, T.; Kremer, A.; Burg, K. url  openurl
  Title Linkage mapping of osmotic stress induced genes of oak Type Journal Article
  Year 2005 Publication Tree Genetics and Genomes Abbreviated Journal Tree Genet. Genomes  
  Volume 1 Issue 1 Pages 31-40  
  Keywords Est; Linkage map; Oak; Osmotic stress; Quercus ssp.; Fagaceae; Quercus; Quercus petraea; Quercus robur  
  Abstract Water stress affecting long-lived trees is an important challenge in forestry. Due to global climate change, forest trees will be threatened by extreme conditions like flooding or drought. It is necessary to understand differences in stress tolerance within certain species and to investigate putative relations on genomic level. In this study, osmotic stress induced genes of Quercus ssp. were positioned on two genetic linkage maps of oak. An intra-specific cross 3P*A4 of Quercus robur consisting of 88 offspring and an inter-specific cross 11P*QS29 of Q. robur and Q. petraea comprising 72 full-sibs were analyzed for the inheritance of 14 loci represented by 34 individual single nucleotide polymorphisms. Seven genes in the intra-cross, as well as other six genes in the inter-cross could be mapped and one gene could not be localised due to the severe distortion of the segregation. The collection of expressed sequences involved ribosomal proteins, members of the oxylase/oxygenase gene family, betaine aldehyde dehydrogenase, Dc3 promoter-binding factor, a putative member of the nodulin family, glutathione-S-transferase and proteins with unknown functions. In the inter-cross, two linked markers exhibited 89% deficiency of heterozygosity. Thirteen genes were positioned on ten different oak chromosomes and can serve as orthologous markers in comparative mapping studies within Fagaceae. © Springer-Verlag 2005.  
  Address INRA BIOGECO, 69 Route d'Arcachon, 33612 Cestas, France  
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  ISSN 16142942 (Issn) ISBN Medium  
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  Notes Cited By (since 1996): 9; Export Date: 22 October 2011; Source: Scopus; doi: 10.1007/s11295-005-0005-1; Language of Original Document: English; Correspondence Address: Burg, K.; Division of Biogenetics and Natural Resources, Austrian Research Center Seibersdorf, 2444 Seibersdorf, Austria; email: kornel.burg@arcs.ac.at Approved no  
  Call Number EcoFoG @ webmaster @ Serial 357  
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Author Latouche-Hallé, C.; Ramboer, A.; Bandou, E.; Caron, H.; Kremer, A. url  openurl
  Title Nuclear and chloroplast genetic structure indicate fine-scale spatial dynamics in a neotropical tree population Type Journal Article
  Year 2003 Publication Heredity Abbreviated Journal Heredity  
  Volume 91 Issue 2 Pages 181-190  
  Keywords Dicorynia guianensis; Gene flow; Genetic differentiation; Microsatellites; Spatial analysis; Tropical tree; gene flow; genetic structure; population genetics; spatial analysis; tree; tropical forest; Cell Nucleus; Chloroplasts; Cohort Studies; DNA, Plant; French Guiana; Genetic Markers; Pollen; Population Dynamics; Seeds; Trees; Variation (Genetics); French Guiana; Dicorynia guianensis; Embryophyta  
  Abstract Dicorynia guianensis is a canopy tree, endemic to the tropical rain forest of French Guiana. We compared generational and spatial genetic structure for maternally and biparentally inherited markers in two cohorts (adult and seedling) in order to infer processes shaping the distribution of genetic diversity. The study was conducted on a 40 ha study plot located at Paracou near Kourou, where 172 adults trees and 375 saplings were sampled. Aggregation of trees was therefore suggested at different distances, ranging from 100 to 400 m. There was a strong link between demographic and genetic spatial structures at small distances (less than 100 m) that is likely to be the consequence of restricted seed dispersal. Genetic differentiation was more pronounced between spatial aggregates than between cohorts. Despite the spatial differentiation, the species was able to maintain high levels of diversity for maternal genomes, suggesting rapid turnover of aggregates. Spatial autocorrelation was larger for chloroplast than nuclear markers indicating a strong asymmetry between pollen and seed flow. Fixation indices indicated a lower heterozygote deficiency for the adults, maybe because of gradual elimination of selfed trees. Genetic relatedness at lower distances was higher in adult trees than in saplings, as a result of generation overlapping in the adult cohort. Overall, our results confirm earlier biological knowledge about the dispersion mechanisms of the species, and lead to an enhanced role of spatial processes in the dynamics of genetic diversity of D. guianensis.  
  Address INRA Lab. Genet. Arbres Forestiers, BP45, 33611 Gazinet Cedex, France  
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  ISSN 0018067x (Issn) ISBN Medium  
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  Notes Cited By (since 1996): 34; Export Date: 22 October 2011; Source: Scopus; Coden: Hdtya; doi: 10.1038/sj.hdy.6800296; PubMed ID: 12886285; Language of Original Document: English; Correspondence Address: Caron, H.; INRA Lab. Genet. Arbres Forestiers, BP45, 33611 Gazinet Cedex, France; email: caron@pierroton.inra.fr; Chemicals/CAS: DNA, Plant; Genetic Markers Approved no  
  Call Number EcoFoG @ webmaster @ Serial 358  
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Author Sharma, K.; Degen, B.; Von Wuehlisch, G.; Singh, N.B. url  openurl
  Title Allozyme variation in eight natural populations of Pinus roxburghii Sarg. in India Type Journal Article
  Year 2002 Publication Silvae Genetica Abbreviated Journal Silvae Genet.  
  Volume 51 Issue 5-6 Pages 246-253  
  Keywords Allozymes; Differentiation; Genetic distance; Multilocus diversity; Pinus roxburghii; Variation; Enzymes; Forestry; Genes; Allozyme variations; Genetic engineering; Enzymes; Genes; Genetic Engineering; Pinus Roxburghii; Embryophyta; Pinus roxburghii  
  Abstract Seeds collected from eight populations of Chir pine (Pinus roxburghii SARG.) from the natural distribution range of the species in Himachal Himalayas in India were analysed isozymatically at 11 enzyme systems. For the enzyme systems studied, 25 gene loci were identified out of which 18 were polymorphic. The observed mean values for genetic variation were slightly lower than mean values reported for Pinus species (number of alleles: 1.65 compared to 2.36; effective number of alleles: 1.13 compared to 1.26; observed heterozygosity: 0.153 compared to 0.179). A small differentiation among populations and large variation within populations were reflected by small value of GST (0.04): Considering the different genetic parameters three populations seem favourable for gene conservation measures.  
  Address Silviculture Division, Forest Research Institute, Dehra Dun – 248 006, India  
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  ISSN 00375349 (Issn) ISBN Medium  
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  Notes Cited By (since 1996): 4; Export Date: 22 October 2011; Source: Scopus; Coden: Sigea; Language of Original Document: English; Correspondence Address: Sharma, K.; Dr. Y. S. Parmar Univ. Hort./Forest., Reg. Horticultural Research Station, Jachh (Nurpur)-176 201 (HP), India Approved no  
  Call Number EcoFoG @ webmaster @ Serial 360  
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Author Zhang, T.; Bai, S.-L.; Bardet, S.; Almeras, T.; Thibaut, B.; Beauchene, J. url  openurl
  Title Radial variations of vibrational properties of three tropical woods Type Journal Article
  Year 2011 Publication Journal of Wood Science Abbreviated Journal J. Wood Sci.  
  Volume 57 Issue 5 Pages 377-386  
  Keywords Damping coefficient; Dynamic modulus; Extractives; Microfibril angle; Tropical woods  
  Abstract The radial trends of vibrational properties, represented by the specific dynamic modulus (E′/ρ) and damping coefficient (tan δ), were investigated for three tropical rainforest hardwood species (Simarouba amara, Carapa procera, and Symphonia globulifera) using free-free flexural vibration tests. The microfibril angle (MFA) was estimated using X-ray diffraction. Consistent patterns of radial variations were observed for all studied properties. E′/ρ was found to decrease from pith to bark, which was strongly related to the increasing pith-bark trend of MFA. The variation of tan δ along the radius could be partly explained by MFA and partly by the gradient of extractives due to heartwood formation. The coupling effect of MFA and extractives could be separated through analysis of the log(tan δ) versus log(E′/ρ) diagram. For the species studied, the extractive content putatively associated with heartwood formation generally tends to decrease the wood damping coefficient. However, this weakening effect of extractives was not observed for the inner part of the heartwood, suggesting that the mechanical action of extractives was reduced during their chemical ageing. © 2011 The Japan Wood Research Society.  
  Address CIRAD, UMR Ecofog, BP 701, 97387 Kourou Cedex, Guyane Française, France  
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  ISSN 14350211 (Issn) ISBN Medium  
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  Notes Export Date: 26 October 2011; Source: Scopus; Coden: Jwscf; doi: 10.1007/s10086-011-1189-7; Language of Original Document: English; Correspondence Address: Bai, S.-L.; Department of Advanced Materials and Nanotechnology, College of Engineering, Peking University, Beijing 100871, China; email: slbai@pku.edu.cn Approved no  
  Call Number EcoFoG @ webmaster @ Serial 363  
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Author Delabie, J.H.C.; Groc, S.; Dejean, A. url  openurl
  Title The tramp ant technomyrmex vitiensis (Hymenoptera: Formicidae: Dolichoderinae) on South America Type Journal Article
  Year 2011 Publication Florida Entomologist Abbreviated Journal Fla. Entomol.  
  Volume 94 Issue 3 Pages 688-689  
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  Abstract Technomyrmex vitiensis is a tramp ant that has spread through many parts of the Old World tropics via human commerce. This species has been previously reported only once in the New World, from San Francisco, California. Here, we report the first records of T. vitiensis in South America, from two sites deep in the forest of French Guiana. It is not clear how these ants were transported to such remote sites, 100 km inland. Copyright © 2011 BioOne All rights reserved.  
  Address Université de Toulouse, UPS, 118 route de Narbonne, F-31062 Toulouse, France  
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  ISSN 00154040 (Issn) ISBN Medium  
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  Notes Export Date: 26 October 2011; Source: Scopus; Coden: Fetma; doi: 10.1653/024.094.0335; Language of Original Document: English; Correspondence Address: Delabie, J.H.C.; Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, Km 16, 45650-000 Ilhéus, Bahia, Brazil Approved no  
  Call Number EcoFoG @ webmaster @ Serial 364  
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Author Faucheux, M.J.; Gibernau, M. url  openurl
  Title Antennal sensilla in five Psychodini moth flies (Diptera: Psychodidae: Psychodinae) pollinators of Arum spp. (Araceae) Type Journal Article
  Year 2011 Publication Annales de la Societe Entomologique de France Abbreviated Journal Ann. Soc. Entomol. Fr.  
  Volume 47 Issue 1-2 Pages 89-100  
  Keywords Chodopsycha; Deceptive pollination; Logima; Psycha; Psychoda  
  Abstract The pollination of the genus Arum (Araceae) is mainly achieved by deception, the floral odour mimicking the pollinator ovipositing site. In order to discover the sensory organs involved in this attraction, we have studied the antennae of five species of psychodine moth-flies (former Psychoda sensu lato = Psychodini), pollinators of Arum spp. The antennae of the five Psychodini reveal seven types of sensilla: multiporous tribranched sensilla basiconica (sensilla ascoidea), multiporous sensilla basiconica, multiporous sensilla coeloconica, multiporous sensilla auricillica, uniporous sensilla basiconica, aporous sensilla chaetica, aporous Böhm's sensilla. Each species possesses three, five or six of these sensillum types. All the multiporous sensilla are probably olfactory receptors while the uniporous sensilla basiconica must possess a contact chemoreceptive function. The multiporous tribranched sensilla basiconica (s. ascoidea), present in all the species, are the best candidates for the reception of the odours given off by the ovipositing sites and the inflorescences of Arum. The multiporous sensilla basiconica and the multiporous sensilla coeloconica may be involved respectively as CO2 receptors or thermoreceptors. Psychoda phalaenoides, which is the main pollinator of A. maculatum, is the species which possesses the largest number of antennal sensilla. The sexual dimorphism, studied only in Psycha grisescens, as concerns the number of sensilla and the absence of a sensillum type which differ according to sex, is difficult to interpret.  
  Address CNRS – Ecofog UMR 8172, BP 709, F-97387 Kourou, France  
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  ISSN 00379271 (Issn) ISBN Medium  
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  Notes Export Date: 26 October 2011; Source: Scopus; Language of Original Document: English; Correspondence Address: Faucheux, M.J.; Université de Nantes, Laboratoire d'Endocrinologie des Insectes Sociaux, 2 rue de la Houssinière, F-44322 Nantes Cedex 03, France; email: faucheux.michel@free.fr Approved no  
  Call Number EcoFoG @ webmaster @ Serial 365  
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Author Chartier, M.; Pélozuelo, L.; Gibernau, M. url  openurl
  Title Do floral odor profiles geographically vary with the degree of specificity for pollinators? Investigation in two sapromyophilous Arum species (Araceae) Type Journal Article
  Year 2011 Publication Annales de la Societe Entomologique de France Abbreviated Journal Ann. Soc. Entomol. Fr.  
  Volume 47 Issue 1-2 Pages 71-77  
  Keywords Arum italicum; Arum maculatum; Floral scent; Psychodidae; Specificity  
  Abstract We compared floral odour profiles among populations of two Arum species which show different degrees of specificity for their fly pollinators. Insects were collected from inflorescences in four populations of Arum italicum and two populations of Arum maculatum. In six Arum populations, we compared inflorescences odour profiles collected by Solid Phase Micro Extraction (SPME) and analysed by gas chromatography. We confirmed that from a pollination point of view, A. italicum is an opportunist species, as it is mainly pollinated by insects of the families Psychodidae, Chironomidae and Sciaridae, whereas A. maculatum is a specialist species, as it is 90% pollinated by Psychodidae. In all populations, Arum italicum was less attractive to pollinators than Arum maculatum. Floral odour profiles of A. italicum were not geographically structured among populations, suggesting a high gene flow or adaptation to a fluctuant guild of pollinators. On the contrary, odour profiles of A. maculatum varied between the two populations studied suggesting a lower gene flow or adaptation to different local pollinator preferences.  
  Address CNRS – Ecofog (UMR 8172), BP709, F-97387 Kourou, France  
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  Notes Export Date: 26 October 2011; Source: Scopus; Language of Original Document: English; Correspondence Address: Chartier, M.; Université Paul Sabatier, Laboratoire Evolution and Diversité Biologique (UMR 5174), Bât. 4R3-B2, F-31062 Toulouse cedex 9, France; email: chartier.marion@gmail.com Approved no  
  Call Number EcoFoG @ webmaster @ Serial 366  
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Author Mariano, C.S.F.; Silva Santos, I.D.A.; Groc, S.; Leroy, C.; Malé, P.-J.; Ruiz-González, M.X.; Cerdan, P.; Dejean, A.; Delabie, J.H.C. url  openurl
  Title The karyotypes of Gigantiops destructor (Fabricius) and other ants from French Guiana (Formicidae) Type Journal Article
  Year 2011 Publication Annales de la Societe Entomologique de France Abbreviated Journal Ann. Soc. Entomol. Fr.  
  Volume 47 Issue 1-2 Pages 140-146  
  Keywords Chromosome number; Diversity; Minimum interaction theory  
  Abstract The aim of this study, which was conducted in French Guiana, was to characterize the karyotypes of nine ant species belonging to the genera Anochetus, Apterostigma, Cyphomyrmex, Camponotus, Gigantiops, Myrmicocrypta, Odontomachus and Pseudomyrmex, and to compare them with published data. We present the first descriptions of the karyotypes of Gigantiops destructor (Fabricius), an endemic Formicinae of the Amazonian region, which is the only living species in the tribe Gigantiopini, and of a species from the poorly-known cryptic genus Myrmicocrypta, which belongs to the Myrmicinae tribe Attini.  
  Address HYDRECO, Laboratoire Environnement Aménagement de Petit Saut, BP 823, F- 97388 Kourou Cedex, France  
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  Notes Export Date: 26 October 2011; Source: Scopus; Language of Original Document: English; Correspondence Address: Delabie, J.H.C.; Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, Km 16, 45650-000 Ilhéus, Bahia, Brazil Approved no  
  Call Number EcoFoG @ webmaster @ Serial 367  
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Author Fonty, E.; Molino, J.F.; Prevost, M.F.; Sabatier, D. openurl 
  Title A new case of neotropical monodominant forest: Spirotropis longifolia (Leguminosae-Papilionoideae) in French Guiana Type Journal Article
  Year 2011 Publication Journal of Tropical Ecology Abbreviated Journal J. Trop. Ecol.  
  Volume 27 Issue 6 Pages 641-644  
  Keywords French Guiana; layering; monodominance; sprouting; supporting strategy; suppressive strategy; tropical rain forests  
  Abstract  
  Address [Fonty, E] ONF, Direct Reg Guyane, F-97300 Cayenne, France, Email: emile.fonty@free.fr  
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  Publisher Cambridge Univ Press Place of Publication Editor  
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  ISSN 0266-4674 ISBN Medium  
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  Notes WOS:000296208500009 Approved no  
  Call Number EcoFoG @ webmaster @ Serial 371  
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Author Dejean, A.; Cereghino, R.; Carpenter, J.M.; Corbara, B.; Herault, B.; Rossi, V.; Leponce, M.; Orivel, J.; Bonal, D. pdf  url
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  Title Climate change impact on neotropical social wasps Type Journal Article
  Year 2011 Publication PLoS One Abbreviated Journal PLoS ONE  
  Volume 6 Issue 11 Pages e27004  
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  Abstract Establishing a direct link between climate change and fluctuations in animal populations through long-term monitoring is difficult given the paucity of baseline data. We hypothesized that social wasps are sensitive to climatic variations, and thus studied the impact of ENSO events on social wasp populations in French Guiana. We noted that during the 2000 La Niña year there was a 77.1% decrease in their nest abundance along ca. 5 km of forest edges, and that 70.5% of the species were no longer present. Two simultaneous 13-year surveys (1997-2009) confirmed the decrease in social wasps during La Niña years (2000 and 2006), while an increase occurred during the 2009 El Niño year. A 30-year weather survey showed that these phenomena corresponded to particularly high levels of rainfall, and that temperature, humidity and global solar radiation were correlated with rainfall. Using the Self-Organizing Map algorithm, we show that heavy rainfall during an entire rainy season has a negative impact on social wasps. Strong contrasts in rainfall between the dry season and the short rainy season exacerbate this effect. Social wasp populations never recovered to their pre-2000 levels. This is probably because these conditions occurred over four years; heavy rainfall during the major rainy seasons during four other years also had a detrimental effect. On the contrary, low levels of rainfall during the major rainy season in 2009 spurred an increase in social wasp populations. We conclude that recent climatic changes have likely resulted in fewer social wasp colonies because they have lowered the wasps' resistance to parasitoids and pathogens. These results imply that Neotropical social wasps can be regarded as bio-indicators because they highlight the impact of climatic changes not yet perceptible in plants and other animals. © 2011 Dejean et al.  
  Address INRA – Nancy, UMR EEF, Champenou, Nancy, France  
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  ISSN 19326203 (Issn) ISBN Medium  
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  Notes Export Date: 29 November 2011; Source: Scopus; Art. No.: e27004; doi: 10.1371/journal.pone.0027004; Language of Original Document: English; Correspondence Address: Dejean, A.; CNRS – UMR 8172, Écologie des Forêts de Guyane (Ecofog), Campus Agronomique, BP 709, Kourou, France; email: alain.dejean@wanadoo.fr Approved no  
  Call Number EcoFoG @ webmaster @ Serial 372  
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