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Rapid growth, early maturation and short generation time in African annual fishes
BACKGROUND: Extreme environmental conditions can give rise to extreme adaptations. We document growth, sexual maturation and fecundity in two species of African annual fish inhabiting temporary savanna pools. RESULTS: Nothobranchius kadleci started to reproduce at the age of 17 days and size of 31 m...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3844391/ https://www.ncbi.nlm.nih.gov/pubmed/24007640 http://dx.doi.org/10.1186/2041-9139-4-24 |
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author | Blažek, Radim Polačik, Matej Reichard, Martin |
author_facet | Blažek, Radim Polačik, Matej Reichard, Martin |
author_sort | Blažek, Radim |
collection | PubMed |
description | BACKGROUND: Extreme environmental conditions can give rise to extreme adaptations. We document growth, sexual maturation and fecundity in two species of African annual fish inhabiting temporary savanna pools. RESULTS: Nothobranchius kadleci started to reproduce at the age of 17 days and size of 31 mm and Nothobranchius furzeri at 18 days and 32 mm. All four study populations demonstrated rapid growth rates of up to 2.72 mm/day (23.4% of their total length). Both species may produce diapausing embryos or embryos that are able to hatch in as few as 15 days, resulting in a minimum generation time as short as only one month. Incubation on the surface of damp peat moss results in high embryo survival (73%) and a high proportion of rapidly developing embryos (58%) that skip diapauses and hatch in less than 30 days. We further demonstrated that rapid growth and maturation do not compromise subsequent fecundity. CONCLUSIONS: Our data suggest that both species have the most rapid sexual maturation and minimum generation time of any vertebrate species, and that rapid maturity does not involve paedogenesis. |
format | Online Article Text |
id | pubmed-3844391 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-38443912013-12-02 Rapid growth, early maturation and short generation time in African annual fishes Blažek, Radim Polačik, Matej Reichard, Martin EvoDevo Research BACKGROUND: Extreme environmental conditions can give rise to extreme adaptations. We document growth, sexual maturation and fecundity in two species of African annual fish inhabiting temporary savanna pools. RESULTS: Nothobranchius kadleci started to reproduce at the age of 17 days and size of 31 mm and Nothobranchius furzeri at 18 days and 32 mm. All four study populations demonstrated rapid growth rates of up to 2.72 mm/day (23.4% of their total length). Both species may produce diapausing embryos or embryos that are able to hatch in as few as 15 days, resulting in a minimum generation time as short as only one month. Incubation on the surface of damp peat moss results in high embryo survival (73%) and a high proportion of rapidly developing embryos (58%) that skip diapauses and hatch in less than 30 days. We further demonstrated that rapid growth and maturation do not compromise subsequent fecundity. CONCLUSIONS: Our data suggest that both species have the most rapid sexual maturation and minimum generation time of any vertebrate species, and that rapid maturity does not involve paedogenesis. BioMed Central 2013-09-04 /pmc/articles/PMC3844391/ /pubmed/24007640 http://dx.doi.org/10.1186/2041-9139-4-24 Text en Copyright © 2013 Blažek et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Blažek, Radim Polačik, Matej Reichard, Martin Rapid growth, early maturation and short generation time in African annual fishes |
title | Rapid growth, early maturation and short generation time in African annual fishes |
title_full | Rapid growth, early maturation and short generation time in African annual fishes |
title_fullStr | Rapid growth, early maturation and short generation time in African annual fishes |
title_full_unstemmed | Rapid growth, early maturation and short generation time in African annual fishes |
title_short | Rapid growth, early maturation and short generation time in African annual fishes |
title_sort | rapid growth, early maturation and short generation time in african annual fishes |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3844391/ https://www.ncbi.nlm.nih.gov/pubmed/24007640 http://dx.doi.org/10.1186/2041-9139-4-24 |
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