Benoît Jahyny

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Ph.D. Student Université Paris 13
Laboratoire d'Ethologie Expérimentale et Comparée
CNRS UMR 7153
Université Paris 13
F - 93430 VILLETANEUSE

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Laboratoire d'Ethologie Expérimentale
et Comparée - LEEC - CNRS UMR 7153 - Université Paris XIII (Paris Nord)
99, avenue J.-B. Clément
93430 - Villetaneuse - FRANCE
Tél. / Fax : (33 1) 49 40 32 59 / 39 75
Email: jahyny@leec.univ-paris13.fr

Laboratório de Mirmecologia
CEPEC-CEPLAC
km 22, rodovia Ilhéus / Itabuna
CP 7. 45600-000 - Itabuna -
Bahia - BRAZIL
Tel/ Fax : (55) 73 3214  32 54 / 32 04
Email: jahyny@hotmail.com

* PhD research: Biology and behavioral ecology of some ant species of the genus Thaumatomyrmex (Insecta, Hymenoptera, Formicidae, Ponerinae, Thaumatomyrmecini) (six different species collected in eight habitats in Brazil and Costa Rica): nidification (behaviour of nidification and nests characteristics in function of the habitat and species); predation (real specialization on the millipedes Penicillata (Myriapoda, Diplopoda)?); colonial structure (micro-colony); strategies of reproduction (gamergates vs gynes and mono- vs polygyny in function of the habitat) and intra-group conflict (hierarchy); social recognition; defence strategy of the micro-colony.
These researches have as main goal the study of the implication of the biology of the genus Thaumatomyrmex in the comprehension of the evolution of the sociality in ants.
* Systematic and biogeography of Brazilian species of the ant genus Thaumatomyrmex (morphology and cytogenetic).
* Social evolution in ants and other insects.
* Passive defence of the nest in ants.
* Ecology and laying behavior of Neotropical Penicillata (Myriapoda, Diplopoda).

2003 - present: Ph.D. in Behavioral Biology in the University of Paris XIII, Laboratoire d’Ethologie Expérimentale et Comparée (LEEC), Villetaneuse, France
Subject: “Research on the biology and behavioral ecology of some cryptobiotic ant species of the genus Thaumatomyrmex Mayr 1887 (Insecta, Hymenoptera, Formicidae, Ponerinae, Thaumatomyrmecini)”. And discussion of the implication of the biology of this genus in the thoughts on the studies about the evolution of sociality in ants.
Supervisors : Pr. D. Fresneau (France) and Pr. J.H.C. Delabie (Brazil)

1997- 2002 Graduation in Biology:

• Ravary F., Jahyny B., Jaisson, P. (2006). “Brood stimulation controls the phasic reproductive cycle of the parthenogenetic ant Cerapachys biroi”. Insectes Sociaux : 53 (1) : 20-26.
• Morini M. S. de C., Yashima M., Zene F. Y., Silva R. R. da, Jahyny B., (2004). “Observations on the Acanthostichus quadratus Emery (Hymenoptera: Formicidae: Cerapachyinae) Visiting Underground Bait and Fruits of the Syagrus romanzoffiana, in an Area of the Atlantic Forest, Brazil”. Sociobiology : 43 (3) : 573-578.
• Lacau S., Jahyny B., Delabie J.H.C., Ramos L.S. (2003). “Notes sur une remarquable xénobiose entre les Fourmis néotropicales Strumigenys saliens Mayr, 1887, et Solenopsis (Diplorhoptrum) sp. (Hym. Formicidae, Myrmicinae).” Bulletin de la Société Entomologique de France : 108 (2) : 137-138.

In preparation:

• Delabie J.H.C., Jahyny B., Cardoso do Nascimento I., Mariano C.S.F., Lacau S., Campiolo S., Schroth G. & Leponce M. (under revision) Contribution of cocoa plantations to the conservation of native ants (Insecta: Hymenoptera: Formicidae) with a special emphasis on the tropical Atlantic fauna of southern Bahia, Brazil. Paper for the "Cocoa and Biodiversity Special Issue" of the journal Biodiversity and Conservation, for 2007. Editors: Schroth G. e Harvey C.A.
• Jahyny B., Lacau S., Delabie J.H.C. & Fresneau D. (in prep.) The enigmatic “prodigious” ant Thaumatomyrmex, one so called ant with micro-colony and others curious particularities (Hymenoptera, Formicidae)
• Jahyny B., Lacau S., Delabie J.H.C. & Fresneau D. (in prep.) How vulnerable ants can protect against enemies: the case of the micro-colony of Thaumatomyrmex (Hymenoptera, Formicidae)
• Jahyny B., Lacau S., Delabie J.H.C. & Fresneau D. (in prep.) Ecology and nesting behavior of the cryptobiotic ant genus Thaumatomyrmex Mayr 1887 (Hymenoptera, Formicidae, Ponerinae)
• Jahyny B., Shic J., Delabie J.H.C. & Fresneau D. (in prep.) Social organisation in the ant genus Thaumatomyrmex Mayr
• Jahyny B., Lacau S., Delabie J.H.C. & Fresneau D. (in prep.) How a queenless ponerine ant can modify the concept of eusociality in ants
• Jahyny B., Lacau S., Delabie J.H.C. & Fresneau D. (in prep.) Predation habit of the ant genus Thaumatomyrmex Mayr revisited
  Jahyny B., Souza-Lacau L., Lacau S., Delabie J.H.C. & Fresneau D. (in prep.) On the use of snail’s shells by the ants for nesting in the Atlantic Forest and cocoa plantation of Brazil: the second life of the snails shells
• Jahyny B., Longino J., Delabie J.H.C. & Fresneau D. (in prep.) How rodent predation of Dipteryx panamensis seed can maintain ant biodiversity in a rain forest of Costa Rica
• Jahyny B., Lacau S., Delabie J.H.C. & Fresneau D. (in prep.) On the presence of gynes in some rain forest species of the Neotropical ant genus Thaumatomyrmex Mayr (Insecta, Hymenoptera, Formicidae)

Book chapters:

• Jahyny B., Lacau S., Delabie J.H.C. & Fresneau D. 2006 (under revision). El género Thaumatomyrmex Mayr 1887 (Ponerinae: Thaumatomyrmecini): predador especializado de Diplopoda Penicillata. In: Fernández C. & Lozano F., H. (eds.). Hormigas Cazadoras de Colombia (Hymenoptera: Formicidae: Poneromorfos). Universidad Nacional de Colombia, Bogota, Colombia.
• Lacau S., Villemant C., Delabie J.H.C. & Jahyny B. 2006 (under revision). Typhlomyrmex Mayr, 1862 : un genre méconnu de fourmis prédatrices et cryptiques (Ectatomminae : Typhlomyrmecini). (58pp.). In: Fernández C. & Lozano F., H. (eds.). Hormigas Cazadoras de Colombia (Hymenoptera: Formicidae: Poneromorfos). Universidad Nacional de Colombia, Bogota, Colombia.

Communications in international congress:

• Ravary F., Jahyny B., Jaisson P. (2001). “The role of brood instars in the phasic reproductive cycle of Cerapachys biroi Forel (Formicidae: Cerapachyinae).” Proceedings of the 2001 Berlin meeting of the European sections of IUSSI, sept. 25-29.

Communications in national congress:

• Jahyny B., Ramos L.S., Lacau S., Fresneau D., Delabie J.H.C. (2003). “A guilda de Formicidae que nidifica em conchas de gastropodes terrestres nos agrossistemas cacaueiros do sudeste da Bahia.” XVI Simpósio de Mirmecologia, 14 a 19 de setembro de 2003 -Florianópolis, SC, Brasil : p. 426-428.
• Lacau S., Villemant C., Delabie J.H.C., Jahyny B., Ramos L.S. (2003). “Observações preliminares sobre a ecologia nutricional de Typhlomyrmex n.sp. (Ponerinae : Typhlomyrmecini).” XVI Simpósio de Mirmecologia, 14 a 19 de setembro de 2003 -Florianópolis, SC, Brasil : p. 342-344.
• Jahyny B., Delabie J. et Fresneau D. (2002). “Mini-sociétés sans reine chez le genre néotropical Thaumatomyrmex Mayr, 1887 (Formicidae : Ponerinae).” Actes des Colloques Insectes Sociaux 15 : 33-37.
• Lacau S., Fresneau D., Delabie J., Jahyny B., Montreuil O., Villemant C. (2001). “Uma nova associação entre as larvas mirmecofilas de duas espécies de Lampyridae (Insecta : Coleoptera) e a formiga Typhlomyrmex rogenhoferi Mayr, 1862 (Formicidae, Ponerinae).” XV Encontro de mirmecologia, 22 a 25 de outubro de 2001 - Londrina, PR, Brasil : p. 239-241.

Spreading knowledge to the public:

• Nascimento I.C. do, Lacau S., Jahyny B. (2003). “A diversidade das formigas.” Jornal Agora “Meio Ambiente” Itabuna (BA-Brazil), de 31 de maio a 02 de junho de 2003 – Ano I – N°12, p4-5.

Dissertations:

• 2002- Biologie et organisation sociale de la fourmi Thaumatomyrmex atrox Weber 1939 (Hymenoptera, Formicidae), objectif : étude de la division du travail et de la structure reproductrice. DEA Dissertation. 26p.
• 2001- Déclenchement du fourragement chez la fourmi Cerapachys biroi Forel (Hymenoptera, Formicidae). Licence dissertation. 20p.

• 2004 – August 02-13: student of the Ant Course 2004 (training course), La selva Biological Station, Costa Rica (http://www.calacademy.org/research/entomology/Ant_Course/ ). This course will provide students with the confidence and skills to identify the major ant genera of Latin America; an understanding of modern specimen processing and curation techniques; an appreciation for the biological diversity of ants, and experience keying to the species level.
• 2002 - March to August: study of the biology and social organisation of the ant Thaumatomyrmex atrox Weber 1939 (Hymenoptera, Formicidae, Ponerinae)”. 6 months fieldwork and laboratory studies in the Laboratory of Myrmecology of the CEPLAC (Brazil) and in the LEEC (France). Supervisors: Pr. D. Fresneau and Pr. J. Delabie.
• 2001 - November: Madagascar myrmecofauna inventory and Types inventory of Formicidae collection of the National Museum of Natural History of Paris (MNHN), supervised by the Dr. B. Fisher (Entomology California Academy of Sciences) and the Dr. C. Villemant (MNHN).
• 2001 - July to October: Systematic studies and ecology of the genus ThaumatomyrmexMayr, 1887(Hymenoptera, Formicidae) and of 3 species of the Pachycondyla villosa complex. 4 months fieldwork and laboratory studies in the Laboratory of Myrmecology of the CEPLAC. Supervisor: Pr. J. Delabie.
• 2001 - June: Entomofauna study of Paris region. 1 month fieldwork and laboratory studies (systematic) supervised by the Dr. G. Pétavy (University Paris XI – Orsay - France).
• 2001 - March to May: biometric study of the Pachycondyla villosaFabricius 1804 complex. 3 months laboratory studies in the Laboratory of Communication Mechanisms Study (NAMC UMR 8620 - University Paris 11, Orsay, France) supervised by the Pr. J-M. Jallon.
• 2000 - September to December: study of the role of brood instars in the phasic reproductive cycle of Cerapachys biroi Forel 1907 (Hymenoptera, Formicidae, Cerapachyinae). Laboratory studies in the LEEC, supervised by the Pr. D. Fresneau and Dr. F. Ravary.
• 2000 - July to September: Systematic and eco-ethologic study of the neotropical ant genus Pachycondyla. 2 months fieldwork and laboratory studies in the Laboratory of Myrmecology of the CEPLAC supervised by the Pr. J. Delabie.

dead tree trunk and cavity (fruits, termitaries, etc.) nesting ants at litter level and underground ants. Specially the species of the poneromorph subfamilies (sensu Bolton 2003).

• Brazil, Bahia state: Atlantic Forest (primary forest, secondary forest, restinga, moist montane forests) and caatinga.
• Brazil, São Paulo and Minas Gerais state: cerrado.
• Costa Rica: tropical wet forest (La Selva Biological Station)

PhD financial support:

Grant of the French Ministry of Research and new Technologies for plane tickets between France and Brazil (2003 – present)
Grant of the BRI (Bureau des Relations Internationales) of the University of Paris XIII for a specific field mission in Uberlândia (MG, Brazil) (2005).
Grant of the Société Entomologique de France, legs Germaine Cousin for fieldwork in Costa Rica (2004).
Bourse Lavoisier Brésil (Brazil Lavoisier grant) of the French Ministry of the Foreign Affairs (2003).

Grant of the CROUS (Centre Régional des Œuvres Universitaires et Scolaires) of Créteil, under the supervision of the Ministry of National Education (2001 – 2001).

Grant of the CROUS of Versailles, under the supervision of the Ministry of National Education for the fieldwork in Brazil (2001).
Bourse de l’aventure de la Mairie de Paris (Adventure grant of Paris city council) (managed by the Guilde Européenne du Raid), for the project « Projet d’exploration scientifique :Mystérieux plateaux de la Forêt Atlantique : Sur les traces d’un océan vert disparu » (2001).

Speaking, reading and writing knowledge: French (mother tongue), Portuguese (good), English and Spanish (fairly good).