Universität Bonn

Institut für Evolutionsbiologie und Ökologie

An der Immenburg 1

53121 Bonn, Germany



Frau Kirsten Hennes

Tel.: +49-228-73-5122

Fax.: +49-228-73-5129

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Prof. Dr. Bartolomaeus

mittwochs 10-12 Uhr

nach vorheriger Anmeldung im Sekretariat



Prof. Bartolomaeus wird der Lehrpreis der Mathematisch-Naturwissenschaftlichen Fakultät am 5. Dezember 2018 verliehen.

Sie sind hier: Startseite Mitarbeiter Kathrin Langen

Kathrin Langen

kathrin_gross.jpg   Dr. rer. nat. Kathrin Langen


Research interest:

In spring 2009 I finished my diploma thesis at the Institute for Evolutionary Biology and Ecology in Bonn. I examined if inbreeding occurs in a natural population of the West African cichlid Pelvicachromis taeniatus, a socially monogamous fish with biparental brood care. My research interests focused on a microsatellite analysis of genetic variation in a wild population from the Moliwe River, Cameroon. Therefore, I established microsatellites through cross species amplification.

In my PhD thesis I will focus on the mating system of P. taeniatus. In a first step I will examine if alternative male mating tactics occur in P. taeniatus that is socially monogamous. Alternative male mating tactics, e.g. sneaking, are widespread in fish. As it has been shown in other cichlids, I want to know whether males of P. taeniatus practise sneak fertilisation. To detect possible sneakers, I will perform behavioural experiments under semi-natural conditions and paternity tests using established microsatellites. My PhD thesis is part of the project “Einfluss der Verwandtschaftsverhältnisse und der Weibchenfärbung auf die gegenseitige Partnerwahl bei Pelvicachromis taeniatus (Cichlidae)“ that is supported by the Deutsche Forschungsgemeinschaft (DFG).


  • Langen K, Bakker TCM, Baldauf SA, Shrestha J & Thünken T (2017) Effects of ageing and inbreeding on reproductive traits in a cichlid fish II: the female perspective. – Biological Journal of the Linnean Society 120: 762- 770.
pdf upon request
  • Langen K, Bakker TCM, Baldauf SA, Shrestha J & Thünken T (2017) Effects of ageing and inbreeding on reproductive traits in a cichlid fish I: the male perspective. – Biological Journal of the Linnean Society 120: 752-761.
pdf upon request
  • Schwarzer J., Lamboj A., Langen K., Misof B. & Schliewen U (2014) Phylogeny and age of chromidotilapiine cichlids (Teleostei: Cichlidae). Hydrobiologia. 748:185-199.
pdf upon request
  • Langen, K., Thünken, T. & Bakker, T. C. M. (2013). No experimental evidence for sneaking behaviour in a West African cichlid with extremely long sperm. Int. J. Evol. Biol. 2013: 714304.
open access
  • Langen, K., Schwarzer, J., Kullmann, H., Bakker, T. C. M. & Thünken, T. (2011). Microsatellite support for active inbreeding in a cichlid fish. PLoS One 6:e24689.
open access
  • Mehlis, M., Bakker, T. C. M., Langen, K. & Frommen, J. G. (2009). Cain and Abel reloaded? Kin recognition and male-male aggression in three-spined sticklebacks (Gasterosteus aculeatus L.). J. Fish. Biol. 75: 2154-2162.
Diploma thesis:

  • Langen, K. (2009) Establishing microsatellites in Pelvicachromis taeniatus (Cichlidae) and their application to the population genetics of a wild population.