Ecological modulation of reproductive behaviour in the peacock blenny: a mini-review
- 271 Downloads
The inter-populational variation in the reproductive behaviour of the peacock blenny Salaria pavo (Risso 1810), particularly the influence of the ecologic environment, was reviewed in the present work. Two populations of this species inhabiting contrasting environments were studied: the Ria Formosa population, a coastal lagoon with sandy/muddy substrate located in the south of Portugal, and the Gulf of Trieste, an area presenting rocky substrate located in the northern Adriatic sea. The remarkable differences in the mating system and reproductive behaviour between the two populations (namely sex-role reversal and high frequency of alternative reproductive tactics (ARTs) at the Ria Formosa vs typical sex roles and low frequency of ARTs at the Gulf of Trieste) are interpreted as a plastic behavioural and physiological response to contrasting ecological conditions. Androgens, namely 11-ketotestosterone, seem to act as mediators of this response. The expression and activity of the enzyme aromatase in the brain also seems to play a key role in fine-tuning the behavioural output in all male morphs as well as females.
KeywordsBlenny Behaviour Plasticity Androgens
JLS was funded by a Fundação para a Ciência e Tecnologia grant SFRH/BPD/67008/2009.
- Oliveira RF, Gonçalves DM (2008) Hormones and social behaviour of teleost fish. In: Magnhagen C, Braithwaite VA, Forsgren E, Kapoor BG (eds) Fish behaviour. Science Publishers Inc., EnfieldGoogle Scholar
- Oliveira RF, Gonçalves D, Ros AFH (2009) Evolution and development of alternative reproductive tactics in blennies: a tale of two species. In: Patzner RA, Gonçalves E, Hastings P, Kapoor BG (eds) The biology of blennies. Science Publishers Inc., EnfieldGoogle Scholar
- Papaconstantinou CA (1979) Secondary sex characters of blennioid fishes (Pisces: Blenniidae). Thalassographica 3:57–75Google Scholar
- Patzner RA, Seiwald M, Adlgasser M, Kaurin G (1986) The reproduction of Blennius pavo (Teleostei, Blenniidae) V. Reproductive behavior in natural environment. Zool Anz 216(5/6):338–350Google Scholar
- Saraiva JL, Gonçalves DM, Simões M, Oliveira RF (2011) Plasticity in reproductive behaviour in two populations of the peacock blenny Salaria pavo. Behaviour 148(14):1457–1472Google Scholar