Claire Detrain | Université libre de Bruxelles (original) (raw)

Papers by Claire Detrain

Research paper thumbnail of SOcial Immunity and sanitary risk management in the ant Myrmica rubra

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Bologna A & Detrain C Temporal changes of myrmecochory by the red ant Myrmica rubra

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Seed desiccation limits removal by ants

Arthropod Plant Interactions, Sep 30, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Implication of honeydew microflora in ant-aphid mutualism

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Self-organised choice based on inter-attraction: the example of gregarious animals

ABSTRACT The spatial distribution of individuals is an important subject in many fields because i... more ABSTRACT The spatial distribution of individuals is an important subject in many fields because it conditions the levels of interactions among individuals, and more generally the structuring as well as the organization of populations. Increase in density of individuals in a given area can be induced by environmental stimuli and/or by interactions among individuals (1–3). Thus, various definitions of aggregation have been given, ecologists privilege the importance of environmental stimuli, while others privilege existing relationships between group members. Aggregation is one of the most widespread social phenomena and occurs at all biological levels, from bacteria to mammals including humans (4, 5). If sometimes, aggregation is associated to non-adaptive, often it is the ground on which more complex social structures are built such as synchronization or division of labour (6). However, knowledge of the mechanisms implied in the formation of aggregates remains fragmentary. The study of the proximal causes, i.e. mechanisms involved in group formation, can benefit from concepts of self-organization (5, 7). These groups find their origin and their cohesion in the inter-attraction among individuals: group members are then the source of attraction. However, in most of the situations, patterns of aggregation, resulting from individual responses to conspecifics are modulated by environmental heterogeneity (5). Previous studies on cockroaches have already described their aggregative distribution in a natural environment where different age-classes share the resources that are present in their home range. They exhibit a strong tendency to gather during their resting period in safe shelters. Therefore, shelters are important, but also limited environmental resources for these insects. The basic mechanisms underlying group formation is the modulation of the individual resting time as a function of the number of conspecifics on a site. In insects cuticular hydrocarbons act as a recognition signal allowing attraction between individuals (8). Cockroaches prefer their own strain odour to another strain (9). Nevertheless, when groups in tests came from two different strains, they aggregated on one site only and did not show any difference from group coming from one strain. We used this insect as an example to show that a self-organized process leads to a diversity of optimal patterns without modification of the individual behaviours and any general knowledge of the available resources. These experimental and theoretical results point to a generic self-organized pattern-formation process independent of the level of animal sociability that should be found in other group-living organisms that present inter-attraction.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Bacteria may contribute to distant species recognition in ant-aphid mutualistic relationships

Insect Science, 2015

Mutualistic interactions between ant and aphid species have been the subject of considerable hist... more Mutualistic interactions between ant and aphid species have been the subject of considerable historical and contemporary investigations, the primary benefits being cleaning and protection for the aphids and carbohydrate-rich honeydew for the ants. Questions remained, however, as to the volatile semiochemical factor influencing this relationship. A recent study highlighted the role of bacterial honeydew volatile compounds in ant attraction. Here, ant's ability to distantly discriminate two aphid species was investigated based on bacterial honeydew semiochemicals emissions using a two-way olfactometer. Both the mutualistic aphid Aphis fabae L. and the non-myrmecophilous aphid Acyrthosiphon pisum Harris were found to be attractive for the ant Lasius niger L. The level of attraction was similar in both assays (control versus one of the aphid species). However, when given a choice between these two aphid species, ants showed a significant preference for Aphis fabae. Honeydew volatiles, mostly from bacterial origins, are known to be a key element in ant attraction. Using the same olfactometry protocol, the relative attractiveness of volatiles emitted by honeydews collected from each aphid species and by bacteria isolated from each honeydew was in investigated. Again, ants significantly preferred volatiles released by Aphis fabae honeydew and bacteria. This information suggests that microbial honeydew volatiles enable ants to distantly discriminate aphid species. These results strengthen the interest of studying the occurrence and potential impact of microorganisms in insect symbioses. This article is protected by copyright. All rights reserved.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Impact of food distance on foraging by the ant Lasius niger

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Local population dynamics of two co-existing birch aphid species : competition or intrinsic cycles of abundance?

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Mass ballooning behaviour in the spider mite

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Seed preferences of the harvester ant Messor barbarus in a Mediterranean mosaic grassland (Hymenoptera: Formicidae)

Sociobiology, 2000

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Suivi de la piste de l'hôte par le Coléoptère myrmécophileEdaphopaussus favieri (Fairmaire) (Carabidae Paussinae)

Insectes Soc, 1990

Laboratory experiments on circular artificial trails show that the beetleEdaphopaussus favieri fo... more Laboratory experiments on circular artificial trails show that the beetleEdaphopaussus favieri follows the trail of its host ant,Pheidole pallidula. After having been isolated for a certain time, the beetle greatly improves its trail-following ability once it is again in contact with workers. The optimal response ofE. favieri occurs for a concentration of 0.03 minor worker's poison glands per cm. Minor and major workers are respectively 10 and 4 times more sensitive. High trail pheromone concentrations, from 0.06 glands/cm onwards, repel the beetle, not the workers. This avoidance effect is also found with wholePh. pallidula's poison and mandibular glands, with volatiles from the Dufour's gland and with poison gland extracts presented in the form of a dot, in front of the beetle. The trail following ofE. favieri is host-specific. The adaptive value of the trail-following characterisitcs ofE. favieri is discussed. Des expériences sur une piste circulaire artificielle montrent que le coléoptèreEdaphopaussus favieri suit la piste de sa fourmi hôte,Pheidole pallidula. Si le coléoptère a été préalablement maintenu isolé, la mise en présence d'ouvrières améliore son suivi de la piste. E. favieri réagit de façon optimale à une concentration de 0.03 glandes à poison d'ouvrière minor par cm. Les ouvrières minor et major sont respectivement 10 et 4 fois plus sensibles que le coléoptère à la phéromone de piste. Contrairement aux ouvrières, le coléoptère est repoussé par des concentrations égales ou supérieures à 0.06 glandes/cm. Cet effet répulsif s'observe aussi pour des glandes à poison et des glandes mandibulaires. entières, dePh. pallidula, ainsi quue pour les produits volatils de la glande de Dufour et certaines concentrations d'extraits de glandes à poison présentés ponctuellement en face du coléoptère.E. favieri suit uniquement la piste de son hôte. La valeur adaptative des différentes caractéristiques du suivi de la piste parE. favieri est discutée.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Prophylaxie sociale au sein de la fourmilière

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The silk road of tetranychus urticae : is it a singe or a double lane ?

Experimental Applied Acarology, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Chapitre 9 - Éthologie et robotique : vers une gestion de précision des sociétés animales

Syntheses, Oct 1, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Caste differences in behavioral thresholds as a basis for polyethism during food recruitment in the ant, Pheidole pallidula (Nyl.) (Hymenoptera: Myrmicinae)

J Insect Behav, 1991

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Field study on foraging by the polymorphic ant species, Pheidole pallidula

Insectes Sociaux, Nov 30, 1990

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Steep Decline and Cessation in Seed Dispersal by Myrmica rubra Ants

PLOS ONE, 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Symbioses entre agents naturels et agents artificiels

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Decision-making in foraging by social insects

Information Processing in Social Insects, 1999

... In this respect, honeybee foraging behavior (eg number of flower visits, flight patterns, han... more ... In this respect, honeybee foraging behavior (eg number of flower visits, flight patterns, handling time on ... with nestmates, to the metabolic cost invested in recruitment signals (eg bee dances or ... In the case of social insects foraging collectively, an exhaustive and precise coding of ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of L’intelligence collective chez les insectes sociaux

Sciences et avenir

Bookmarks Related papers MentionsView impact

Research paper thumbnail of SOcial Immunity and sanitary risk management in the ant Myrmica rubra

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Bologna A & Detrain C Temporal changes of myrmecochory by the red ant Myrmica rubra

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Seed desiccation limits removal by ants

Arthropod Plant Interactions, Sep 30, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Implication of honeydew microflora in ant-aphid mutualism

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Self-organised choice based on inter-attraction: the example of gregarious animals

ABSTRACT The spatial distribution of individuals is an important subject in many fields because i... more ABSTRACT The spatial distribution of individuals is an important subject in many fields because it conditions the levels of interactions among individuals, and more generally the structuring as well as the organization of populations. Increase in density of individuals in a given area can be induced by environmental stimuli and/or by interactions among individuals (1–3). Thus, various definitions of aggregation have been given, ecologists privilege the importance of environmental stimuli, while others privilege existing relationships between group members. Aggregation is one of the most widespread social phenomena and occurs at all biological levels, from bacteria to mammals including humans (4, 5). If sometimes, aggregation is associated to non-adaptive, often it is the ground on which more complex social structures are built such as synchronization or division of labour (6). However, knowledge of the mechanisms implied in the formation of aggregates remains fragmentary. The study of the proximal causes, i.e. mechanisms involved in group formation, can benefit from concepts of self-organization (5, 7). These groups find their origin and their cohesion in the inter-attraction among individuals: group members are then the source of attraction. However, in most of the situations, patterns of aggregation, resulting from individual responses to conspecifics are modulated by environmental heterogeneity (5). Previous studies on cockroaches have already described their aggregative distribution in a natural environment where different age-classes share the resources that are present in their home range. They exhibit a strong tendency to gather during their resting period in safe shelters. Therefore, shelters are important, but also limited environmental resources for these insects. The basic mechanisms underlying group formation is the modulation of the individual resting time as a function of the number of conspecifics on a site. In insects cuticular hydrocarbons act as a recognition signal allowing attraction between individuals (8). Cockroaches prefer their own strain odour to another strain (9). Nevertheless, when groups in tests came from two different strains, they aggregated on one site only and did not show any difference from group coming from one strain. We used this insect as an example to show that a self-organized process leads to a diversity of optimal patterns without modification of the individual behaviours and any general knowledge of the available resources. These experimental and theoretical results point to a generic self-organized pattern-formation process independent of the level of animal sociability that should be found in other group-living organisms that present inter-attraction.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Bacteria may contribute to distant species recognition in ant-aphid mutualistic relationships

Insect Science, 2015

Mutualistic interactions between ant and aphid species have been the subject of considerable hist... more Mutualistic interactions between ant and aphid species have been the subject of considerable historical and contemporary investigations, the primary benefits being cleaning and protection for the aphids and carbohydrate-rich honeydew for the ants. Questions remained, however, as to the volatile semiochemical factor influencing this relationship. A recent study highlighted the role of bacterial honeydew volatile compounds in ant attraction. Here, ant's ability to distantly discriminate two aphid species was investigated based on bacterial honeydew semiochemicals emissions using a two-way olfactometer. Both the mutualistic aphid Aphis fabae L. and the non-myrmecophilous aphid Acyrthosiphon pisum Harris were found to be attractive for the ant Lasius niger L. The level of attraction was similar in both assays (control versus one of the aphid species). However, when given a choice between these two aphid species, ants showed a significant preference for Aphis fabae. Honeydew volatiles, mostly from bacterial origins, are known to be a key element in ant attraction. Using the same olfactometry protocol, the relative attractiveness of volatiles emitted by honeydews collected from each aphid species and by bacteria isolated from each honeydew was in investigated. Again, ants significantly preferred volatiles released by Aphis fabae honeydew and bacteria. This information suggests that microbial honeydew volatiles enable ants to distantly discriminate aphid species. These results strengthen the interest of studying the occurrence and potential impact of microorganisms in insect symbioses. This article is protected by copyright. All rights reserved.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Impact of food distance on foraging by the ant Lasius niger

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Local population dynamics of two co-existing birch aphid species : competition or intrinsic cycles of abundance?

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Mass ballooning behaviour in the spider mite

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Seed preferences of the harvester ant Messor barbarus in a Mediterranean mosaic grassland (Hymenoptera: Formicidae)

Sociobiology, 2000

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Suivi de la piste de l'hôte par le Coléoptère myrmécophileEdaphopaussus favieri (Fairmaire) (Carabidae Paussinae)

Insectes Soc, 1990

Laboratory experiments on circular artificial trails show that the beetleEdaphopaussus favieri fo... more Laboratory experiments on circular artificial trails show that the beetleEdaphopaussus favieri follows the trail of its host ant,Pheidole pallidula. After having been isolated for a certain time, the beetle greatly improves its trail-following ability once it is again in contact with workers. The optimal response ofE. favieri occurs for a concentration of 0.03 minor worker's poison glands per cm. Minor and major workers are respectively 10 and 4 times more sensitive. High trail pheromone concentrations, from 0.06 glands/cm onwards, repel the beetle, not the workers. This avoidance effect is also found with wholePh. pallidula's poison and mandibular glands, with volatiles from the Dufour's gland and with poison gland extracts presented in the form of a dot, in front of the beetle. The trail following ofE. favieri is host-specific. The adaptive value of the trail-following characterisitcs ofE. favieri is discussed. Des expériences sur une piste circulaire artificielle montrent que le coléoptèreEdaphopaussus favieri suit la piste de sa fourmi hôte,Pheidole pallidula. Si le coléoptère a été préalablement maintenu isolé, la mise en présence d'ouvrières améliore son suivi de la piste. E. favieri réagit de façon optimale à une concentration de 0.03 glandes à poison d'ouvrière minor par cm. Les ouvrières minor et major sont respectivement 10 et 4 fois plus sensibles que le coléoptère à la phéromone de piste. Contrairement aux ouvrières, le coléoptère est repoussé par des concentrations égales ou supérieures à 0.06 glandes/cm. Cet effet répulsif s'observe aussi pour des glandes à poison et des glandes mandibulaires. entières, dePh. pallidula, ainsi quue pour les produits volatils de la glande de Dufour et certaines concentrations d'extraits de glandes à poison présentés ponctuellement en face du coléoptère.E. favieri suit uniquement la piste de son hôte. La valeur adaptative des différentes caractéristiques du suivi de la piste parE. favieri est discutée.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Prophylaxie sociale au sein de la fourmilière

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The silk road of tetranychus urticae : is it a singe or a double lane ?

Experimental Applied Acarology, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Chapitre 9 - Éthologie et robotique : vers une gestion de précision des sociétés animales

Syntheses, Oct 1, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Caste differences in behavioral thresholds as a basis for polyethism during food recruitment in the ant, Pheidole pallidula (Nyl.) (Hymenoptera: Myrmicinae)

J Insect Behav, 1991

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Field study on foraging by the polymorphic ant species, Pheidole pallidula

Insectes Sociaux, Nov 30, 1990

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Steep Decline and Cessation in Seed Dispersal by Myrmica rubra Ants

PLOS ONE, 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Symbioses entre agents naturels et agents artificiels

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Decision-making in foraging by social insects

Information Processing in Social Insects, 1999

... In this respect, honeybee foraging behavior (eg number of flower visits, flight patterns, han... more ... In this respect, honeybee foraging behavior (eg number of flower visits, flight patterns, handling time on ... with nestmates, to the metabolic cost invested in recruitment signals (eg bee dances or ... In the case of social insects foraging collectively, an exhaustive and precise coding of ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of L’intelligence collective chez les insectes sociaux

Sciences et avenir

Bookmarks Related papers MentionsView impact