Éditeur(s) : Elzeviers
Extrait de : Historia naturalis Brasiliae (p. 253)
Résumé : Eumolpus ignitus, coléoptère
Siècle(s) traité(s) : 17
Permalien : http://www.manioc.org/images/BBX17010-0401i3
BBX17010-0401i3

Éditeur(s) : PNRM : Parc Naturel Régional de la Martinique DEAL (Martinique) : Direction de l'Environnement, de l'Aménagement et du Logement Région Martinique PNRM : Parc Naturel Régional de la Martinique
Extrait de : "Biodiversité des espaces forestiers et volcaniques de la Martinique : des spécificités à l'exceptionnalité" : atelier scientifique international, les 12 et 13 octobre 2015. Parc naturel régional de la Martinique
Description : Julien TOUROULT, directeur adjoint SPN-MNHN, analyse les Coléoptères longicornes dans les Petites Antilles puis à l'échelle de la Martinique. Il met en évidence la richesse et l'endémisme de groupe d'insectes dans l'arc des Petites Antilles puis il présente l'état des connaissances en Martinique et les prospections en matière de Hotspots.
Siècle(s) traité(s) : 21
Droits : CC-BY-NC-ND - Attribution - Pas d'utilisation commerciale - Pas de modification
Permalien : http://www.manioc.org/fichiers/V15431
V15431
V15431

Éditeur(s) : HAL CCSD Wiley
Résumé : International audience
In the Caribbean, Pterocarpus officinalis swamp forest, a coastal freshwater wetland, has been locally transformed by human activities into Colocasia esculenta monoculture (under the swamp forest) or pasture (where deforestation has occurred). The aim of this study was to evaluate the impact of three land uses of this tropical wetland (swamp forest, C. esculenta monoculture and pasture) on soil abiotic and biological features. We hypothesized that increasing the level of ecosystem alteration by agricultural intensification would negatively impact soil chemical characteristics, soil fauna diversity and carbon mineralization. As expected, land use significantly affected soil characteristics and changes followed the increasing intensity of land use. The ‘undisturbed system’, that is swamp forest, was characterized by a large soil organic matter content, a high level of soil moisture, a small phosphorus content and a slightly lower pH. These characteristics were correlated with a small faunal abundance and diversity and slow carbon (C) mineralization. The ‘low disturbance system’, that is C. esculenta monoculture, was the closest to swamp forest characteristics and changes between the both systems principally concerned a very slight decrease in organic matter content and very small increase in C mineralization and Coleoptera diversity. By contrast, all parameters (soil chemical characteristics, C mineralization and faunal abundance and diversity) were impacted in the most intensive land-use, pasture. Our study confirmed that agricultural practices have an influence on soil fauna and C mineralization processes in wetlands. Moreover, our study suggested that a C. esculenta traditional agroecosystem under swamp forest cover could be considered as an ‘eco-friendly’ agricultural practice.
ISSN: 0266-0032

hal-01562423
https://hal.archives-ouvertes.fr/hal-01562423
DOI : 10.1111/sum.12273

Éditeur(s) : HAL CCSD Magnolia Press
Résumé : International audience
Hydroporus rifensis sp. n. is described from Central Rif in northern Morocco. The new species is the first member of the Hydroporus tristis-group to be recorded from the African continent. Analyses of cytochrome oxydase 1 (CO1) and 16S rRNA partial sequences indicate unambiguously that H. rifensis sp. n. is a geographical vicariant of the widespread and common European species Hydroporus gyllenhalii Schiodte, 1841, whose closest Iberian populations are known from southern Spain and southern Portugal. Genetically the two species are very close, but in terms of morphology they differ considerably, to the extent that in several respects H. rifensis sp. n. is more similar to some species of the H. striola-group, the sister clade of the H. tristis-group. The new species differs from H. gyllenhalii notably by its larger size, lighter elytra, stronger pubescence, much finer elytral punctation, morphology of the median prosternum area, and marked differentiation of protarsal claws in male. Hydroporus rifensis sp. n. is the first dytiscid species endemic to the Rif and the second Hydroporus species endemic to Morocco.
ISSN: 1175-5326

hal-01544481
https://hal.archives-ouvertes.fr/hal-01544481
DOI : 10.11646/zootaxa.3841.1.4

Éditeur(s) : HAL CCSD
Résumé : Tropical forests are predicted to harbor most of the insect diversity on earth, but few studies have been conducted to characterize insect communities in tropical forests. One major limitation is the lack of consensus on methods for insect collection. Deciding which insect trap to use is an important consideration for ecologists and entomologists, yet to date few study has presented a quantitative comparison of the results generated by standardized methods in tropical insect communities. Here, we investigate the relative performance of two flight interception traps, the windowpane trap, and the more widely used malaise trap, across a broad gradient of lowland forest types in French Guiana. The windowpane trap consistently collected significantly more Coleoptera and Blattaria than the malaise trap, which proved most effective for Diptera, Hymenoptera, and Hemiptera. Orthoptera and Lepidoptera were not well represented using either trap, suggesting the need for additional methods such as bait traps and light traps. Our results of contrasting trap performance among insect orders underscore the need for complementary trapping strategies using multiple methods for community surveys in tropical forests.
Zookeys

hal-01032428
https://hal.archives-ouvertes.fr/hal-01032428
DOI : 10.3897/zookeys.216.3332

Éditeur(s) : HAL CCSD
Résumé : International audience
Les auteurs ont mesuré l'augmentation de température dans les spadices de deux espèces de Monstera: Monstera adansonii Schott et Monstera deliciosa Liebm. La température des spadices a été enregistrée parallèlement à la description du cycle floral (mouvement de la spathe, production d'odeur, libération de pollen et de résine) sur des plantes cultivées au Jardin botanique de Montréal. Les cycles floraux et thermogénétiques, qui sont identiques pour les deux espèces, durent 96 heures et s'étendent sur près de cinq jours. Quand la floraison débute (premier jour, phase femelle), la température du spadice augmente légèrement au dessus de la température ambiante jusqu'au début de la phase mâle. Le matin du cinquième jour, quand la température ambiante est à son plus bas, la température du spadice commence à augmenter et atteint un maximum en même temps que le pollen est libéré. Le type de cycles floraux et thermogénétiques indique que M adansonii et M deliciosia pourraient être pollinisés par des insectes (probablement des coléoptères) arrivant avant que la spathe soit complètement déroulée et repartant au moment de la libération du pollen.
Bulletin de la société d'histoire naturelle de Toulouse

hal-01086661
https://hal-agroparistech.archives-ouvertes.fr/hal-01086661

Éditeur(s) : HAL CCSD National Research Council Canada
Résumé : International audience
In French Guiana, inflorescences of Philodendron squamiferum Poepp. (Araceae) were regularly visited by the scarab beetle Cyclocephala simulatrix Hölne and (Scarabaeidae, Coleoptera) occasionally by Cyclocephala tylifera Hölne. The flowering cycle lasted 2 days, and the protogynous inflorescence exhibited features typical of beetle pollination (floral chamber, food rewards, flower heating). The spadix temperature was measured during the entire flowering cycle in French Guiana and at the Montreal Botanical Garden. Both sets of measurements gave a similar temperature pattern. The spadix warmed up twice at the beginning of each evening with no notable heat production between the two peaks. These two temperature peaks were well synchronized with the arrival and departure of beetles
ISSN: 0008-4026

hal-01202724
https://hal.archives-ouvertes.fr/hal-01202724

Éditeur(s) : HAL CCSD Museum Nationale d'Histoire Naturelle Paris
Résumé : International audience
Forty-two species of Coccinellidae Latreille, 1807 (two Coccidulinae Mulsant, 1846; 12 Scymninae Mulsant, 1846; three Chilocorinae Mulsant, 1846, 24 Coccinellinae Latreille, 1807, one Epilachninae Mulsant, 1846) are listed herein. Scymnus laetificus Weise, 1879 is reported for the third time in France.
ISSN: 1280-9551

hal-01544903
https://hal.archives-ouvertes.fr/hal-01544903
DOI : 10.5252/z2015n1a9

Éditeur(s) : HAL CCSD
Résumé : International audience
As part of an inventory of Carabidae from Tunisia many field surveys were conducted specifically targeting endogean and hypogean environments. This work led to the discovery of two new endemic Trechus species belonging to the species-complex of Trechus fulvus Dejean, 1831. Characters of these species are related to the group of Trechus lallemantii Fairmaire, 1859 that we redefine on the basis of a set of morphological characters.
BULLETIN MENSUEL DE LA SOCIETE LINNEENNE DE LYON

hal-01544482
https://hal.archives-ouvertes.fr/hal-01544482

Éditeur(s) : HAL CCSD Magnolia Press
Résumé : International audience
The genus Notomicrus Sharp, 1882 is recorded from Guadeloupe for the first time. Examination of recently collected material revealed the presence of four species, of which three are described as new species so far endemic to Guadeloupe. Notomicrus sabrouxi sp. n. is akin to the continental Neotropical species N. gracilipes Sharp, 1882 and N. traili Sharp, 1882. Notomicrus chailliei sp. n. and N. femineus sp. n. are sibling species which diverge from each other by 3.4% of observed distance in cytochrome oxidase 1 sequences. The latter species seems to be comprised of only females, and is suspected to reproduce by obligate parthenogenesis. The fourth species is N. sharpi Balfour-Browne, 1939. These species are morphologically described notably through scanning electron microscopy study, and data on their distribution in the Guadeloupe archipelago and habitat preferences are presented and discussed.
ISSN: 1175-5326

hal-01544477
https://hal.archives-ouvertes.fr/hal-01544477

Éditeur(s) : HAL CCSD Magnolia Press
Résumé : International audience
Hydroporus galloprovincialis sp. n. is described from Jouques, north-east of Aix-en-Provence in south-eastern France (Provence). The new species belongs to the Hydroporus memnonius-group, within which it is the only ascertained normandi-complex species of the French fauna. The habitat (small springs) and morphological features of the species suggest a semi-subterranean life style. It can be separated from the other species of the complex notably by its more elongated and parallel-sided habitus, by its wider pronotum and flatter dorsal surface, and furthermore differs from H. normandi Regimbart, 1903 by a different shape of the gonocoxa. Illustrations are provided for other described normandi-complex species and subspecies for comparison. Analyses of partial cox1 sequences indicate that the three sampled H. normandi-complex species (H. galloprovincialis sp. n., H. normandi and H. lluci Fery, 1999) diverged recently; their relationships are unresolved. H. galloprovincialis sp. n. is for the moment the only species of the genus Hydroporus Clairville, 1806 endemic to continental France.
ISSN: 1175-5326

hal-01544484
https://hal.archives-ouvertes.fr/hal-01544484
DOI : 10.11646/zootaxa.3652.4.4