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post-doc position

Thierry Rigaud Thierry.Rigaud at u-bourgogne.fr
Wed Jul 3 09:43:54 EST 2002

Dear all,

A postdoctoral position is open at the Evolutionary Ecology Group,
University of Burgundy (Dijon, France). Please advertise students and

The project aims to investigate the ecology and evolution of
interactions between parasites with different transmission modes living
within the same hosts, i.e. parasites using vertical transmission (VT)
vs. horizontal transmission (HT). These parasites have different
evolutionary interests. VT parasites must have no major effect on host
fecundity or mortality, while, in most cases, such effects are induced
by HT parasites. The aim of this project is to investigate whether or
not these parasites have competitive interactions.

The biological model chosen for this project is a host-parasite system
found in freshwater amphipods. These crustaceans are known to harbour
acanthocephalans parasites that manipulate their host behaviour to
increase their probability of reaching their definitive host. In this
case, the detrimental effect of parasite on its host (increasing
mortality by predation) is an intrinsic component of the parasite
fitness. In addition, acanthocephalans reduce the fecundity and pairing
probability of their hosts. Amphipods also harbour a number of
microsporidian parasites, most of which are VT parasites. Some of these
VT microsporidia are sex ratio distorters, i.e. they have the ability to
turn putative males into functional females.

Several lines of research can be followed, according to the applicant’s
interest, including :
- Investigation of the prevalence and repartition of both
acanthocephalans and microsporidia in the field (between populations and
also within population across time).
- Comparison of behavioural traits and reproductive life-history traits
between hosts belonging to the 4 following categories : uninfected,
infected by VT parasites only, infected by HT parasites only, infected
by both VT and HT parasites.

The applicant should have an experience in evolutionary ecology (broad
sense), and/or parasitology, and should have a good knowledge of
statistics. Basic molecular techniques (DNA extraction, PCR) welcome,
but not necessary.

Conditions are as follows :
- Open to non-french only (and not living in France in the last 2 years)

- Starting date between now (July 2002) and December 2002
- PhD necessary
- The post is for 2 years max.
- Salary around 23,500 € / year.

Applicants should send a letter and CV (with scientific experience,
skills, publication list, etc) plus two letters of reference (Email
accepted), before 1rst of november 2002. Send these documents to:
Thierry RIGAUD, UMR 5561 BioGeosciences, Equipe Ecologie Evolutive,
Université de Bourgogne, 6 Bd Gabriel, 21000 Dijon, France.
You can also Email for questions : thierry.rigaud at u-bourgogne.fr.

Thierry Rigaud
Université de Bourgogne
UMR 5561 Biogéosciences
Equipe Ecologie Evolutive
6 boulevard Gabriel
21000 Dijon
thierry.rigaud at u-bourgogne.fr
Tel: +33 (0) 3 80 39 39 45
Fax: +33 (0) 3 80 39 62 31


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