Alain Dejean

Summary

Country: France

Publications

  1. Dejean A, Azémar F, Libert M, Compin A, Herault B, Orivel J, et al. Ant-lepidopteran associations along African forest edges. Naturwissenschaften. 2017;104:7 pubmed publisher
    ..We conclude that co-evolution with ants occurred similarly in the Heterocera and Rhopalocera. ..
  2. Corbara B, Servigne P, Dejean A, Carpenter J, Orivel J. A mimetic nesting association between a timid social wasp and an aggressive arboreal ant. C R Biol. 2018;: pubmed publisher
    ..The aggressiveness of D. bidens likely protects the wasps from army ant raids, but the ants do not benefit from the presence of the wasps; therefore, this relationship corresponds to a kind of commensalism. ..
  3. Dejean A, Carpenter J, Gibernau M, Leponce M, Corbara B. Nest relocation and high mortality rate in a Neotropical social wasp: Impact of an exceptionally rainy La Niña year. C R Biol. 2010;333:35-40 pubmed publisher
    ....
  4. Dejean A, Petitclerc F, Roux O, Orivel J, Leroy C. Does exogenic food benefit both partners in an ant-plant mutualism? The case of Cecropia obtusa and its guest Azteca plant-ants. C R Biol. 2012;335:214-9 pubmed publisher
    ..Thus, the predatory activity of their guest ants benefits the Cecropia trees not only because the ants protect them from defoliators since most prey are phytophagous insects but also because the plant absorbs nutrients...
  5. Dejean A, Orivel J, Rossi V, Roux O, Lauth J, Malé P, et al. Predation success by a plant-ant indirectly favours the growth and fitness of its host myrmecophyte. PLoS ONE. 2013;8:e59405 pubmed publisher
    ..e., more fruits produced and more flowers that matured into fruit). This study highlights the importance of myrmecotrophy on host plant fitness and the stability of ant-myrmecophyte mutualisms...
  6. Touchard A, Aili S, Fox E, Escoubas P, Orivel J, Nicholson G, et al. The Biochemical Toxin Arsenal from Ant Venoms. Toxins (Basel). 2016;8: pubmed publisher
    ..The present review details the unique structures and pharmacologies of known ant venom proteinaceous and alkaloidal toxins and their potential as a source of novel bioinsecticides and therapeutic agents. ..
  7. Dejean A, Rodríguez Pérez H, Carpenter J, Azémar F, Corbara B. The predatory behavior of the Neotropical social wasp Polybia rejecta. Behav Processes. 2017;140:161-168 pubmed publisher
    ....
  8. Dejean A, Revel M, Azémar F, Roux O. Altruism during predation in an assassin bug. Naturwissenschaften. 2013;100:913-22 pubmed publisher
    ..By improving the regularity of feeding for each nymph, it likely regulates nymphal development, synchronizing molting and subsequently limiting cannibalism...
  9. Dejean A, Moreau C, Uzac P, Le Breton J, Kenne M. The predatory behavior of Pheidole megacephala. C R Biol. 2007;330:701-9 pubmed
    ..P. megacephala scouts also use long-range recruitment when they detect the landmarks of termites and competing ant species, thus permitting them to avoid confronting these termites and ants solitarily. ..
  10. Dejean A, Fisher B, Corbara B, Rarevohitra R, Randrianaivo R, Rajemison B, et al. Spatial distribution of dominant arboreal ants in a malagasy coastal rainforest: gaps and presence of an invasive species. PLoS ONE. 2010;5:e9319 pubmed publisher
    ..albipes, and that the penetration of this species further inland might be facilitated by the low density of native, territorially dominant arboreal ants normally able to limit its progression...

Detail Information

Publications16

  1. Dejean A, Azémar F, Libert M, Compin A, Herault B, Orivel J, et al. Ant-lepidopteran associations along African forest edges. Naturwissenschaften. 2017;104:7 pubmed publisher
    ..We conclude that co-evolution with ants occurred similarly in the Heterocera and Rhopalocera. ..
  2. Corbara B, Servigne P, Dejean A, Carpenter J, Orivel J. A mimetic nesting association between a timid social wasp and an aggressive arboreal ant. C R Biol. 2018;: pubmed publisher
    ..The aggressiveness of D. bidens likely protects the wasps from army ant raids, but the ants do not benefit from the presence of the wasps; therefore, this relationship corresponds to a kind of commensalism. ..
  3. Dejean A, Carpenter J, Gibernau M, Leponce M, Corbara B. Nest relocation and high mortality rate in a Neotropical social wasp: Impact of an exceptionally rainy La Niña year. C R Biol. 2010;333:35-40 pubmed publisher
    ....
  4. Dejean A, Petitclerc F, Roux O, Orivel J, Leroy C. Does exogenic food benefit both partners in an ant-plant mutualism? The case of Cecropia obtusa and its guest Azteca plant-ants. C R Biol. 2012;335:214-9 pubmed publisher
    ..Thus, the predatory activity of their guest ants benefits the Cecropia trees not only because the ants protect them from defoliators since most prey are phytophagous insects but also because the plant absorbs nutrients...
  5. Dejean A, Orivel J, Rossi V, Roux O, Lauth J, Malé P, et al. Predation success by a plant-ant indirectly favours the growth and fitness of its host myrmecophyte. PLoS ONE. 2013;8:e59405 pubmed publisher
    ..e., more fruits produced and more flowers that matured into fruit). This study highlights the importance of myrmecotrophy on host plant fitness and the stability of ant-myrmecophyte mutualisms...
  6. Touchard A, Aili S, Fox E, Escoubas P, Orivel J, Nicholson G, et al. The Biochemical Toxin Arsenal from Ant Venoms. Toxins (Basel). 2016;8: pubmed publisher
    ..The present review details the unique structures and pharmacologies of known ant venom proteinaceous and alkaloidal toxins and their potential as a source of novel bioinsecticides and therapeutic agents. ..
  7. Dejean A, Rodríguez Pérez H, Carpenter J, Azémar F, Corbara B. The predatory behavior of the Neotropical social wasp Polybia rejecta. Behav Processes. 2017;140:161-168 pubmed publisher
    ....
  8. Dejean A, Revel M, Azémar F, Roux O. Altruism during predation in an assassin bug. Naturwissenschaften. 2013;100:913-22 pubmed publisher
    ..By improving the regularity of feeding for each nymph, it likely regulates nymphal development, synchronizing molting and subsequently limiting cannibalism...
  9. Dejean A, Moreau C, Uzac P, Le Breton J, Kenne M. The predatory behavior of Pheidole megacephala. C R Biol. 2007;330:701-9 pubmed
    ..P. megacephala scouts also use long-range recruitment when they detect the landmarks of termites and competing ant species, thus permitting them to avoid confronting these termites and ants solitarily. ..
  10. Dejean A, Fisher B, Corbara B, Rarevohitra R, Randrianaivo R, Rajemison B, et al. Spatial distribution of dominant arboreal ants in a malagasy coastal rainforest: gaps and presence of an invasive species. PLoS ONE. 2010;5:e9319 pubmed publisher
    ..albipes, and that the penetration of this species further inland might be facilitated by the low density of native, territorially dominant arboreal ants normally able to limit its progression...
  11. Dejean A, Leroy C, Corbara B, Roux O, Céréghino R, Orivel J, et al. Arboreal ants use the "Velcro(R) principle" to capture very large prey. PLoS ONE. 2010;5:e11331 pubmed publisher
    ....
  12. Dejean A, Lachaud J. The hunting behavior of the African ponerine ant Pachycondyla pachyderma. Behav Processes. 2011;86:169-73 pubmed publisher
    ..Workers retrieve small prey solitarily while, for large geophilomorphs and scolopendromorphs, nestmates can be recruited at short range or even at long range through tandem running. ..
  13. Dejean A, Céréghino R, Carpenter J, Corbara B, Herault B, Rossi V, et al. Climate change impact on neotropical social wasps. PLoS ONE. 2011;6:e27004 pubmed publisher
    ..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. ..
  14. Dejean A, Delabie J, Corbara B, Azémar F, Groc S, Orivel J, et al. The ecology and feeding habits of the arboreal trap-jawed ant Daceton armigerum. PLoS ONE. 2012;7:e37683 pubmed publisher
    ..e., Coccidae, Pseudococcidae, Membracidae and Aethalionidae). Through group-hunting, short-range recruitment and spread-eagling prey, workers can capture a wide range of prey (up to 94.12 times the mean weight of foraging workers). ..
  15. Dejean A, Leroy C, Corbara B, Céréghino R, Roux O, Herault B, et al. A temporary social parasite of tropical plant-ants improves the fitness of a myrmecophyte. Naturwissenschaften. 2010;97:925-34 pubmed publisher
    ..Yet, contrarily to mutualistic Azteca, when host tree development does not keep pace with colony growth, A. andreae workers forage on surrounding plants; the colonies can even move to a non-Cecropia tree...
  16. Dejean A, Petitclerc F, Azémar F, Pelozuelo L, Talaga S, Leponce M, et al. Aquatic life in Neotropical rainforest canopies: Techniques using artificial phytotelmata to study the invertebrate communities inhabiting therein. C R Biol. 2018;341:20-27 pubmed publisher
    ....