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9 resultados encontrados para: AUTOR: Corbara, Bruno
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1.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Ant and spider species as surrogates for functional community composition of epiphyte-associated invertebrates in a tropical moist forest
Céréghino, Régis ; Corbara, Bruno (coaut.) ; Hénaut, Yann (coaut.) ; Bonhomme, Camille (coaut.) ; Compin, Arthur (coaut.) ; Dejean, Alain (coaut.) ;
Contenido en: Ecological Indicators Vol. 96, Part 1 (January 2019), p. 694-700 ISSN: 1470-160X
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Epiphytes represent up to 50% of all plant species in rainforests, where they host a substantial amount of invertebrate biomass. Efficient surrogates for epiphyte invertebrate communities could reduce the cost of biomonitoring surveys while preventing destructive sampling of the plants. Here, we focus on the invertebrate communities associated to tank bromeliads. We ask whether the presence of particular ant and/or spider taxa (easily surveyed taxa) that use these plants as nesting and/or foraging habitats predicts functional trait combinations of aquatic invertebrate communities hosted by the plants. Functional community composition of invertebrates was predicted both by bromeliad habitat features and the presence of certain ant and spider species. The ant Azteca serica preferred wider bromeliad rosettes that trap large amount of detritus, indicating interstitiallike food webs dominated by deposit feeders that burrow in fine particulate organic matter. Leucauge sp. spiders preferred narrower bromeliad rosettes bearing smaller detrital loads, thereby indicating a dominance of pelagic filter-feeding and predatory invertebrates in the water-filled leaf axils. Both Neoponera villosa ants and Eriophora sp. spiders preferred rosettes at intermediate size bearing moderate amounts of detritus, indicating a benthic food web dominated by leaf shredders and gathering collectors. Owing to the animal diversity and biomass supported by rainforest epiphytes, our approach would deserve to be further tested on a range of epiphytes involved in tight interactions with invertebrates. In this context, surrogate species could serve both as indicators of functional diversity, and as early-warning indicators of network disassembly.


2.
- Artículo con arbitraje
PDF
Resumen en: Inglés | Frances |
Resumen en inglés

In an inundated Mexican forest, 89 out of 92 myrmecophytic tank bromeliads (Aechmea bracteata) housed an associated ant colony: 13 sheltered Azteca serica, 43 Dolichoderus bispinosus, and 33 Neoponera villosa. Ant presence has a positive impact on the diversity of the aquatic macroinvertebrate communities (n = 30 bromeliads studied). A Principal Component Analysis (PCA) showed that the presence and the species of ant are not correlated to bromeliad size, quantity of water, number of wells, filtered organic matter or incident radiation. The PCA and a generalized linear model showed that the presence of Azteca serica differed from the presence of the other two ant species or no ants in its effects on the aquatic invertebrate community (more predators). Therefore, both ant presence and species of ant affect the composition of the aquatic macroinvertebrate communities in the tanks of A. bracteata, likely due to ant deposition of feces and other waste in these tanks.

Resumen en frances

Dans une forêt inondable du Mexique, sur 92 individus de la broméliacée myrmécophyte Aechmea bracteata, seuls trois étaient dépourvus d’une colonie de fourmis, 13 abritaient Azteca serica, 43 Dolichoderus bispinosus et 33 Neoponera villosa. La présence des fourmis favorise la diversité au sein des communautés aquatiques de macro-invertébrés (30 broméliacées étudiées, index de Shannon, profils de diversité). Une analyse en composantes principales (ACP) montre que la présence de fourmis n’est pas corrélée avec la taille de la plante, la quantité d’eau, le nombre de puits, la quantité de matière organique et la radiation incidente. L’ACP et un modèle mixte généralisé montrent un impact d’Azteca serica (comparé aux autres cas) attribuable à une plus grande quantité de prédateurs (effet top–down). La présence et l’identité des fourmis jouent un rôle sur la composition des communautés de macro-invertébrés aquatiques à travers des interactions directes, les ouvrières évacuant fèces et déchets dans les réservoirs.


3.
Artículo
*Solicítelo con su bibliotecario/a
An arboreal spider protects its offspring by diving into the water of tank bromeliads
Hénaut, Yann ; Corbara, Bruno (coaut.) ; Azémar, Frédéric (coaut.) ; Céréghino, Régis (coaut.) ; Dézerald, Olivier (coaut.) ; Dejean, Alain (coaut.) ;
Contenido en: Comptes Rendus Biologies Vol. 341, no. 3 (March 2018), p. 196-199 ISSN: 1631-0691
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés | Frances |
Resumen en inglés

Cupiennius salei (Ctenidae) individuals frequently live in association with tank bromeliads, including Aechmea bracteata, in Quintana Roo (Mexico). Whereas C. salei females without egg sacs hunt over their entire host plant, females carrying egg sacs settle above the A. bracteata reservoirs they have partially sealed with silk. There they avoid predators that use sight to detect their prey, as is known for many bird species. Furthermore, if a danger is more acute, these females dive with their egg sacs into the bromeliad reservoir. An experiment showed that this is not the case for males or females without egg sacs. In addition to the likely abundance of prey found therein, the potential of diving into the tank to protect offspring may explain the close association of this spider with bromeliads. These results show that, although arboreal, C. salei evolved a protective behavior using the water of tank bromeliads to protect offspring.

Resumen en frances

L’araignée Cupiennius salei (Ctenidae) vit souvent en association avec la broméliacée à réservoir Aechmea bracteata. Dans le Quintana Roo (Mexique), les femelles qui transportent un cocon s’installent au-dessus d’un réservoir d’A. bracteata qu’elles obstruent partiellement de voiles de soie pour se camoufler des prédateurs. En présence de vibrations importantes et répétées, ces femelles plongent avec leur cocon dans l’eau du réservoir. Notre étude montre que les autres adultes (mâles et femelles sans cocon) n’utilisent pas les réservoirs d’eau. Ainsi, en plus de l’abondance de proies, la possibilité de pouvoir plonger pour protéger la descendance pourrait expliquer l’association entre cette espèce d’araignée et les broméliacées. Nos expériences montrent que les femelles porteuses d’un cocon manifestent une stratégie de protection vis-à-vis des cocons et d’elles-mêmes en s’immergeant durant 30, voire 90 minutes.


4.
- Artículo con arbitraje
A tank bromeliad favors spider presence in a neotropical inundated forest
Hénaut, Yann ; Corbara, Bruno (coaut.) ; Pélozuelo, Laurent (coaut.) ; Azémar, Frédéric (coaut.) ; Céréghino, Régis (coaut.) ; Herault, Bruno (coaut.) ; Dejean, Alain (coaut.) ;
Contenido en: PLoS One Vol. 9, no. 12, e114592 (December 2014), p. 1-13 ISSN: 1932-6203
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Resumen en: Inglés |
Resumen en inglés

Tank bromeliads are good models for understanding how climate change may affect biotic associations. We studied the relationships between spiders, the epiphytic tank bromeliad, Aechmea bracteata, and its associated ants in an inundated forest in Quintana Roo, Mexico, during a drought period while, exceptionally, this forest was dry and then during the flooding that followed. We compared spider abundance and diversity between ‘Aechmea-areas’ and ‘controlareas’ of the same surface area. We recorded six spider families: the Dipluridae, Ctenidae, Salticidae, Araneidae, Tetragnathidae and Linyphiidae among which the funnel-web tarantula, Ischnothele caudata, the only Dipluridae noted, was the most abundant. During the drought period, the spiders were more numerous in the Aechmea-areas than in the control-areas, but they were not obligatorily associated with the Aechmea. During the subsequent flooding, the spiders were concentrated in the A. bracteata patches, particularly those sheltering an ant colony. Also, a kind of specificity existed between certain spider taxa and ant species, but varied between the drought period and subsequent flooding. We conclude that climatic events modulate the relationship between A. bracteata patches and their associated fauna. Tank bromeliads, previously considered only for their ecological importance in supplying food and water during drought, may also be considered refuges for spiders during flooding. More generally, tank bromeliads have an important role in preserving non-specialized fauna in inundated forests.


5.
Artículo - Memoria en extenso
Etudes des conditions d'apparition des phenomenes de cleptobiose en laboratoire chez une ponerine neotropicale (Ectatomma ruidum Roger)
Cerles, H. ; Corbara, Bruno (coaut.) ; Lachaud, Jean Paul (coaut.) ; Pérez Lachaud, Gabriela (coaut.) ;
Clasificación: AR/595.796 / E8
Contenido en: Actes des Colloques Insectes Sociaux Vol. 15 (2002), p. 157-159 ISSN: 0265-0076
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
ECO010012866 (Disponible)
Disponibles para prestamo: 1
PDF
Resumen en: Frances |
Resumen en frances

Le pillage des réserves des nids homospécifiques voisins, ou cleptobiose intraspécifique, semble être de règle entre colonies de la fourmi ponérine Ectatomma ruidum Roger. Cependant, ce phénomène, pourtant très fréquent sur le terrain, est difficilement reproductible en laboratoire. À travers l’observation de l’occurrence des vols en fonction de diverses conditions expérimentales, nous avons pu mettre au point un protocole propice à l’apparition de la cleptobiose en laboratoire. Les résultats obtenus montrent qu’un regroupement des proies sous forme de source dense, de même qu’une position stable de cette dernière au cours d’expériences successives favorisent la mise en place de comportements cleptobiotiques. De même, un dispositif offrant de plus grandes distances entre le nid et la source alimentaire semble plus propice à l’apparition des phénomènes de cleptobiose.


6.
- Artículo con arbitraje
Nest site selection by two polistine wasps: the influence of Acacia-Pseudomyrmex associations against predation by army ants (Hymenoptera)
Dejean, Alain ; Orivel, J. (coaut.) ; Corbara, Bruno (coaut.) ; Olmsted Bull Bull, Ingrid Christine (coaut.) (1939-2002) ; Lachaud, Jean Paul (coaut.) ;
Clasificación: AR/595.798097267 / N4
Contenido en: Sociobiology Vol. 37, no. 1 (2001), p. 135-146 ISSN: 0361-6525
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
ECO010018291 (Disponible)
Disponibles para prestamo: 1
PDF

7.
Artículo
Feeding preferences in African ponerine ants: a cafeteria experment (Hymenoptera: Formicidae)
Dejean, Alain ; Schatz, Bertrand (coaut.) ; Orivel, J. (coaut.) ; Beugnon, Guy (coaut.) ; Lachaud, Jean Paul (coaut.) ; Corbara, Bruno (coaut.) ;
Contenido en: Sociobiology Vol. 34, no. 3 (1999), p. 555-568 ISSN: 0361-6525
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8.
Artículo
The anti-predator strategies of Parachartergus apicalis (Vespidae: Polistinae)
Dejean, Alain ; Corbara, Bruno (coaut.) ; Lachaud, Jean Paul (coaut.) ;
Contenido en: Sociobiology Vol. 32, no. 3 (1998), p. 477-487 ISSN: 0361-6525
PDF

9.
Capítulo de libro
Donnees preliminaires sur les premiers stades du developpement de la société chez ectatomma ruidum (hymenoptera, formicidae)
Corbara, Bruno ; Fresneau, Dominique (coaut.) ; Lachaud, Jean Paul (coaut.) ;
Clasificación: S/595.799045 / C6
Contenido en: Congress National Society San. (3er. : 1986 : Politiers, Francia) p. 1-10
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
SER000384 (Disponible)
Disponibles para prestamo: 1