Invertébrés Aquatiques Réserve Nationale De La Trinité

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Invertébrés Aquatiques Réserve Nationale De La Trinité Inventaire des coléoptères aquatiques de frange littorale centre-ouest de Guyane française Octobre 2019 Coléoptères aquatiques de la frange littorale centre-ouest de Guyane Inventaire des familles Elmidae Dryopidae Dytiscidae Noteridae Ptilodactylidae Rapport ONIKHA / RP201902 Etude réalisée pour le compte de L’Unité Mixte de Service PatriNat (AFB-CNRS-MNHN) Contact : Julien Touroult – Directeur adjoint – [email protected] En bibliographie ce rapport sera cité comme suit : Clavier S., Barr C., Le Page P., Post D., Shepard W. 2019. Coléoptères aquatique de la frange littorale centre-ouest de Guyane française Inventaire des familles Elmidae, Dryopidae, Dytiscidae, Noteridae, Ptilodactylidae. Rapport UMS PatriNat / ONIKHA RP201902. 52p. © Ce document est protégé par des droits d’auteur. Toute reproduction partielle ou totale ne peut être effectuée sans l’autorisation préalable du propriétaire : UMS PATRINAT. Photos de couverture : Affluent Crique des Cascades & Hintonelmis perfecta (Coleoptera : Elmidae). S. Clavier / ONIKHA © 3 Inventaire des coléoptères aquatiques de frange littorale centre-ouest de Guyane française Octobre 2019 RESUME Dans le cadre de l’appel à projets INPN 2019 lancé par l’Unité Mixte de Service PatriNat (AFB-CNRS- MNHN) un inventaire des coléoptères aquatiques de la frange littorale centre-ouest de Guyane française a été réalisé. Le bureau d’études Onikha accompagné d’experts taxonomistes nord-américains a échantillonné une vingtaine de « criques », appellation locale des cours d’eaux de faibles à moyenne importance, lors du petit été de mars 2019. 60 espèces de coléoptères aquatiques ont été identifiées. 15 appartiennent à la famille des Elmidae, 1 à la famille des Dryopidae, 35 à la famille des Dytiscidae, 8 à la famille des Noteridae et une à la famille des Ptilodactylidae. Parmi celles-ci, 29 (48%) sont absentes de TAXREF V12 et constituent de fait un nouvel enregistrement pour la Guyane : 5 espèces d’Elmidae, 17 espèces de Dytiscidae, 6 espèces de Noteridae et 1 espèce de Ptilodactylidae. Ces chiffres démontrent la nécessité de poursuivre l’effort d’inventaire des invertébrés aquatiques de Guyane française. ABSTRACT An hydrobiological survey of the aquatic coleoptera of the coastal part of French Guyana was conducted by Onikha & collaborators during March 2019. Sixty species were reported from about twenty “criques” local names of wadeable streams. Of the 60 species, 29 (48%) are reported for the first time from French Guiana : 15 species of Elmidae (5 new); 1 species of Dryopidae, 35 species of Dytiscidae (17 new), 8 species of Noteridae (6 new), 1 species of Ptilodactylidae (1 new). These results emphasize the importance of supporting the inventory effort of aquatic invertebrates of French Guiana. 4 Inventaire des coléoptères aquatiques de frange littorale centre-ouest de Guyane française Octobre 2019 SOMMAIRE 1 INTRODUCTION .......................................................................................................... 8 2 MATERIEL & METHODES ............................................................................................ 8 2.1 STATIONS D’ETUDE .......................................................................................................................... 8 2.2 PERIODE D’ECHANTILLONNAGE ET CONDITIONS CLIMATIQUES ............................................................... 11 2.3 PROTOCOLE D’ECHANTILLONNAGE ................................................................................................... 12 2.4 PRISE DE VUES ET TRAITEMENT DES IMAGES ....................................................................................... 14 2.5 BANCARISATION ........................................................................................................................... 14 3 RESULTATS ............................................................................................................... 15 3.1 ELMIDAE ..................................................................................................................................... 15 3.2 DRYOPIDAE .................................................................................................................................. 24 3.3 DYTISCIDAE .................................................................................................................................. 25 3.4 NOTERIDAE .................................................................................................................................. 45 3.5 PTILODACTYLIDAE ......................................................................................................................... 50 4 CONCLUSION - PERSPECTIVES ............................................................................... 52 5 BIBLIOGRAPHIE ........................................................................................................ 53 5 Inventaire des coléoptères aquatiques de frange littorale centre-ouest de Guyane française Octobre 2019 LISTE DES FIGURES Figure 1 : Localisation des stations d’échantillonnages du projet RECOLT ............................................................................................. 9 Figure 2 : Photographies des stations du projet RECOLT (S. Clavier / Onikha) .................................................................................... 10 Figure 3 : Photographie d’un milieu lentique du projet RECOLT (S. Clavier / Onikha) ........................................................................ 11 Figure 4 : Pluviométrie et température de Guyane en mars 2019 (Source Météo France) ................................................................. 12 Figure 5 : Collecte des invertébrés aquatiques – captures au filet Troubleau (S. Clavier / Onikha) ................................................... 13 Figure 6 : Echantillonnage des membres du projet RECOLT sur la crique Toussaint (S. Clavier / Onikha) ...................................... 13 Figure 7 : Gyrelmis brunnea......................................................................................................................................................................... 16 Figure 8 : Gyrelmis nubila............................................................................................................................................................................. 17 Figure 9 : Gyrelmis obesa ............................................................................................................................................................................ 17 Figure 10 : Gyrelmis pulchella ..................................................................................................................................................................... 18 Figure 11 : Gyrelmis simplex........................................................................................................................................................................ 18 Figure 12 : Gyrelmis spinata ........................................................................................................................................................................ 19 Figure 13 : Gyrelmis thoracica ..................................................................................................................................................................... 19 Figure 14 : Hintonelmis delevei ................................................................................................................................................................... 20 Figure 15 : Hintonelmis perfecta ................................................................................................................................................................. 20 Figure 16 : Neoelmis maculata .................................................................................................................................................................... 21 Figure 17 : Stegoelmis shepardi .................................................................................................................................................................. 21 Figure 18 : Stegoelmis verrucata ................................................................................................................................................................ 22 Figure 19 : Stenhelmoides strictifrons ........................................................................................................................................................ 23 Figure 20 : Tyletelmis mila............................................................................................................................................................................ 23 Figure 21 : Xenelmis tarsalis ........................................................................................................................................................................ 24 Figure 22 : Platyparnus frater ...................................................................................................................................................................... 25 Figure 23 : Agaporomorphus knischi .......................................................................................................................................................... 27 Figure 24 : Aglymbus leprieurii .................................................................................................................................................................... 28 Figure 25 : Aglymbus pallidiventris
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