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Born:
Education:
Family situation:
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Camilla Ryne 2 May 1966 Ph. D., Lund University, 2001 Married, two children born 1992 and 1995. |
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060101-081231 |
75% research fellow
(SIDA). |
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030107-051231 |
Project assistant 50% (030107-031231) 60% (040101-051231), long-term project (2003-2005) financed by MISTRA through Christer Löfstedt and Olle Anderbrant. |
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040601-050131 |
40% researcher financed by Trygger Foundation. |
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020701-021231 |
Post doctoral STINT fellowship with Dr. Michael T. Siva-Jothy, Dept. of Animal and Plant Sciences, Sheffield University, UK. |
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020101-020630 |
Leave of absence. |
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011102 |
PhD thesis in Chemical ecology and ecotoxicology defended: Pyralid moth
reproduction: Communication, constraints and control. Faculty opponent: Prof.
Jeremy N. McNeil, Laval University, Canada. Supervisor: Prof. Christer Löfstedt |
PRESENT
The studies on mating biology
have led me into a new, very interesting path of investigations. My interest is
now directed into in what way chemical communication plays an active role in
mating decisions, such as mate choice and sexual conflicts. Do chemicals signal
honesty to reduce sexual conflicts or do the signals use the signalling system to
enhance the conflict of interest?
At present, my target species
is the common bed bug (Cimex lectularius)
and the tropical bed bug (C. hemipterus), two pests of increasing importance partly due to the common bed
bugs’ increased occurrence in the industrial world.
Bed bug pheromones
The bed bugs’ very odd mating
behaviour where the male pierces the females’ abdomen (traumatic
insemination),induces high costs for the female, but would be lethal for a
“mistaken” male partner. Do they have sex pheromones to signal their gender
belonging? What do they use the alarm substances for, predator avoidance or
something else?
Chemical signals are often looked upon as
being “honest signals”, signalling mating status or species belonging. Signals
could however also be used by males to manipulate females (i.e. marking pheromones).
Moreover, chemical signals can be used by females to signal receptivity, i.e.
to decrease unwanted harassment from males.
From the viewpoint of a pheromone researcher, the
bed bug offers a unique chance of identifying and investigating odour communication
in an insect where almost no prior work has been done.
Environmental sustainable control of bed
bugs
The two species of bed bugs are ectoparasites on
humans and require regular blood feeds to breed and moult (i.e. to change
between nymphal stages). Bed bugs are a very common problem in the third world
and causes large discomforts. Historically, the tropical bed bug is found in
tropical environments and the common bed bug in more temperate climates. Does
that hold true today with the increased travelling? Important information of
the present global distribution of the two pests is lacking.
The fast increase of bed bug infestations around
the world is believed to be partly due to resistance to the allowed
pesticides used against infestations. Human health concerns about the effect of
the increasingly resistant ectoparasitic bed bug as well as toxic usage of
control agents in bedrooms, points to a need for alternative, environmentally
safe control methods. Pheromones have proven to be effective for monitoring as
well as control of many insects, having the advantage of being
species-specific, non-toxic and biologically degradable.
This work is a three-year project funded by
Sida/Sarec and involves close cooperation with University of Sheffield and
ICIPE, Kenya (International Centre of Insect Physiology and Ecology).
My PhD focused on chemical
communication and mating biology in stored product moths. I have worked with
three different species of moths: Ephestia kuehniella, E. cautella and Plodia
interpunctella and with the flour
beetle, Tribolium confusum. The aim of the PhD
was to identify pheromones emitted by females and establishing minor component
differences between the closely related species of moths and to use that
knowledge in control in mills and factories. (Read more).
Information in Swedish:
TV-programmet Kunskapslandet; "Vägglössen på väg tillbaka"
Vägglössen är på väg tillbaka i Sverige. Troligtvis följer den med på resor från länder med annat klimat. Vägglusen, som egentligen är en skinnbagge, kommunicerar med hjälp av dofter. Det är någonting som Camilla Ryne, forskare i kemisk ekologi, har undersökt närmare. Hon har kommit fram till hur man kan lura lössen att gå i fällor.
Titta på TV-reportaget (Real format, kräver Real Player eller Media Player, in Swedish).
Titta på TV-reportaget (SVT Play)
PUBLICATIONS
1. Zhu, J-W.,
Ryne, C., Unelius, R., Valeur, P. G., Löfstedt, C. 1999. Reidentification of
the female sex pheromone of the Indian meal moth, Plodia interpunctella: evidence
for a four-component pheromone blend. Ent. Exp. Appl. 92:
137-146.
2. Ryne, C., Zhu, J.-W., Van Dongen, S.
& Löfstedt, C. 2001. Spermatophore size and multiple mating: effects on
reproductive success and post-mating behaviour in the Indian meal moth. Behaviour
138:947-963.
3. Ryne, C., Svensson, G. P. and Löfstedt, C. 2001. Mating disruption of Plodia
interpunctella
in small-scale plots: effects of pheromone blend, emission rates and population
density. J. Chem. Ecol. 27:2109-2124.
4. Ryne,
C., Ekeberg, M. Olsson, P. –O. C., Valeur, P. G., & Löfstedt, C.
2002.Water revisited: a powerful attractant for certain stored-product moths. Ent.
Exp. Appl. 103: 99-103.
5. Svensson, G. P., Ryne, C. and Löfstedt, C. 2002.
Heritable variation of sex pheromone production and the potential for
resistance evolution to pheromone-based control of the Indian meal moth, Plodia
interpunctella (Lepidoptera: Pyralidae). J. Chem. Ecol. 28:
1447-1461.
6. Ryne, C., Nilsson, P. A. & Siva-Jothy, M. T.
2004. Dietary glycerol and adult access to water: effects on fecundity and
longevity in the Almond moth. J. Insect Phys. 50: 429-434.
7. Olsson, C. P.-O., Ryne, C., Wallén, R., Anderbrant,
O. & Löfstedt, C. 2006. Male-produced sex pheromone in T. confusum:
behaviour and indications of whole body production sites. DOI:
10.1016/j.jspr.2005.01.003. J. Stored Prod. Res. 42:
173-182.
8. Ryne, C., Ekeberg, M., Jonsén, N., Oehlschlager,
C., Löfstedt, C., Anderbrant, O. 2006. Reduction in an almond moth Ephestia
cautella (Lepidoptera: Pyralidae) population by means of
mating disruption. Pest Man. Science 62: 912-918.
DOI: 10.1002/ps.1256
9. Verheggen, F., Ryne, C., Olsson, P. -O. C., Arnoud,
L., Lognay, G., Högberg, H.-E., Persson, D., Haubruge, E., Löfstedt, C. 2007.
Electrophysiological and behavioral activity of secondary metabolites in the
confused flour beetle, T. confusum. J. Chem. Ecol.33: 525-539.
10. Ryne, C., Svensson G., Anderbrant, O. & Löfstedt, C. 2007. Evaluation of long-term mating disruption of Ephestia kuehniella and Plodia interpunctella (Lepidoptera: Pyralidae) in indoor storage facilities by pheromone traps and monitoring of relative aerial concentrations of pheromone. J. Econ. Entomol. 100: 1017-1025. DOI: 10.1603/0022-0493(2007)100[1017:EOLMDO]2.0.CO;
11. Ryne, C. & Bensch, S. 2007. Do anthropogenic transports facilitate stored-product
pest moth dispersal? A molecular approach. Naturwissenschaften. DOI 10.1007/s00114-007-0299-y
OTHER PUBLICATIONS:
1. Ryne, C.
1999. The function of pheromones and their use in IPM of stored-product moths
and beetles. Introductory paper. Institution of Ecology, Lund.
2. Löfstedt,
C., Valeur, P., and Ryne, C. 1998.
Dofter för bekämpning av skadeinsekter i kvarn och bageri, pp 6-8 in Feromoner
och kairomoner för bekämpning av skadeinsekter. Årsrapport 1997 (22 pp).
3. Löfstedt,
C., Valeur, P., and Ryne, C.1999. Dofter för bekämpning av skadeinsekter i
kvarn och bageri, pp 7-9 in Feromoner och kairomoner för bekämpning av
skadeinsekter. Årsrapport 2000 (28 pp).
4. Anderbrant,
O., Valeur, P., Ryne, C., Olsson, C., Svensson, G., Jirle, E., Johnson, K., and
Löfstedt, C. 2001. Dofter för bekämpning av skadeinsekter i kvarn och bageri,
pp 7-11 in Feromoner och kairomoner för bekämpning av skadeinsekter. Årsrapport
2000 (33 pp).
5. Ryne, C.
2001. Pyralid moth reproduction-Communication, Constraints & Control. PhD
Thesis, Lund University, Sweden.
6. Anderbrant,
O., Ryne, C., Olsson, P.-O.C. & Löfstedt, C. 2005. Doftämnen istället för
gifter i livsmedelsindustrin. Forskningsnytt 1/2005:22-23.
7. Anderbrant,
O., Ryne, C., Olsson, P.-O.C., Jirle, E., Johnson, K. and Löfstedt, C.
Pheromones and kairomones for detection and control of indoor pyralid moths.
IOBC wprs Bulletin (in press).
