Winge’s sex-linked color patterns and SDL in the guppy: genes or gene complexes?
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2009, Vol 2, Issue 1
Abstract
In Poecilia reticulata, different phenotypes appear due to dominance, codominance, poligeny, or some demonstrated interallelic interactions. Recent (both molecular and classical) investigations suggest a mechanism of expression of several different loci in a single color pattern, resulting in high numbers of possible color pattern phenotypes. The color pattern seems to be determined by complex interactions of many genes (at the same locus or not, located on the same chromosome or not), under variable environmental conditions. For example, the Maculatus color pattern is due to the presence of both Maculatus red and Maculatus black elements. On their turn, having in view the latest definitions of the gene, both Maculatus red and Maculatus black could have a composite nature, too. Sexdetermination in the guppy is studied since the 1920s. The deepest mechanism of sex determination is not clear yet, but classical studies of Winge early in the past century and recent molecular studies revealed a possible composite nature of the so called master sex determining gene, located at SDL of the Y chromosome.
Authors and Affiliations
Valentin Petrescu-Mag
Keywords
Related Articles
- EP ID EP102253
- DOI -
- Views 76
- Downloads 0
The influence of structural changes and ichtyofauna abundance on the ecological state of the Crisuri Hydrographic Are
The paper presents the research regarding the structure of fish communities with a view to assess the quality of water in the Crişuri Hydrographic Area. It is also a comparative study of the ichtyofauna composition in...
Use of commercial live feeds enrichment during first feeding period of the barber goby Elacatinus figaro
The first feeding period is the most critical phase for the production of marine fish larvae. The utilization of n-3 HUFA enrichment on live feed has improved the results for several species during the larviculture. To e...
Impact of Sariakandi fish pass on fisheries diversity of Bangali river, Bogra, Bangladesh.
The present study was conducted to know the impact of Sariakandi fish pass on fisheries diversity of Bangali river, Bogra, Bangladesh. Data were collected directly from fishermen, fish traders and organizations related...
Effects of hydrogen peroxide on Compsopogon caeruleus (Rhodophycophyta) and two superior plants.
Hydrogen peroxide was investigated as a potential algaecide for the filamentous epiphytic alga, Compsopogon caeruleus (Balbis ex C.Agardh). The goal was to determine if hydrogen peroxide could be used to eliminate C. cae...
The use of citric acid as attractant in diet of grand sturgeon Huso huso fry and its effects on growing factors and survival rate
In an 8-weeks feeding trial, attractant (citric acid) was added to juvenile beluga (Huso huso) diets at different levels in order to increase growth and survival. In this trial that was carried out in Shahid Marjani comp...