The importance of social dimension and maturation stage for the probabilistic maturation reaction norm in Poecilia reticulata
MetadataShow full item record
Maturation is an important event in an organism's life history, with important implications on dynamics of both wild and captive populations. The probabilistic maturation reaction norm (PMRN) has emerged as an important method to describe variation in maturation in wild fish. Because most PMRNs are based on age and size only, it is important to understand limitations of these variables in explaining maturation. We experimentally assessed (i) the sensitivity of age- and size-based PMRNs to unaccounted sources of plasticity, (ii) the role of social environment on maturation and (iii) the significance of estimating PMRNs early and late in the maturation process (initiation and completion of maturation, respectively). We reared male guppies (Poecilia reticulata) under laboratory conditions, subjected to two food levels and three different social cues. We found that growth and social environment affected the maturation in a way that could not be accounted for by their effect on age and size. PMRNs estimated for the initiation stage were less plastic (growth differences and social cues influenced the PMRN shape only little) than those for completion. The initiation of maturation is probably closer to the maturation ‘decision’ and allows determining factors influencing maturation decision most accurately.
CitationDiaz Pauli B, Heino M. The importance of social dimension and maturation stage for the probabilistic maturation reaction norm in Poecilia reticulata. Journal of Evolutionary Biology. 2013;26(10):2184-2196
Copyright 2013 The Author(s)
Showing items related by title, author, creator and subject.
The importance of social dimension and maturation stage for the probabilistic maturation reaction norm in Poecilia reticulata Diaz Pauli, Beatriz; Heino, Mikko Petteri (Wiley, 2013-10-01)Maturation is an important event in an organism's life history, with important implications on dynamics of both wild and captive populations. The probabilistic maturation reaction norm (PMRN) has emerged as an important ...Journal article
Testosterone in feedback control of final maturation in female Atlantic cod - the effect of testosterone supplementation de Sottomayor e Azeredo Leme, Maria Rita da Mota (The University of Bergen, 2012-06-01)Atlantic cod is a species of very high fecundity and it spawns rather easily and spontaneously in captivity. However husbandry routines, diets, females/males imbalances and stress are believed to be the causes of high ...Master thesis
Changes in gill Na+K+ATPase alfa subunit isoform expression during smoltification and in maturing male Atlantic salmon Elgen, Christine Ranang (2011-06-22)Distinct freshwater and seawater chloride cells have been identified in salmon gills and recent studies also suggest that there are specific freshwater (α1a) and seawater (α1b) isoforms of the α subunit ...Master thesis