Rapid growth, early maturation and short generation time in African annual fishes.
Rapid growth, early maturation and short generation time in African annual fishes.
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DOI：
10.1186/2041-9139-4-24
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发表时间：
2013-09-04
期刊：
影响因子：
4.1
通讯作者：
Reichard M
中科院分区：
文献类型：
--
作者：
Blažek R;Polačik M;Reichard M
极端的环境条件会导致极端的适应。我们记录生长，性成熟和繁殖力在两个物种的非洲一年生鱼类栖息临时稀树草原池。假鳃鱼kadleci开始繁殖的年龄为17天，大小为31毫米，假鳃鱼furzeri在18天，32毫米。所有四个研究人群表现出快速增长率高达2.72毫米/天（23.4%的总长度）。这两个物种都可能产生滞育胚胎或能够在15天内孵化的胚胎，导致最短的世代时间只有一个月。在潮湿的泥炭藓表面上孵化，胚胎存活率高（73%），快速发育的胚胎（58%）跳过滞育，在不到30天的时间内孵化。我们进一步证明了快速生长和成熟不会影响随后的繁殖力。我们的数据表明，这两个物种有最快的性成熟和最短的世代时间的任何脊椎动物物种，快速成熟并不涉及pedogenesis。
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. 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. 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.
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影响因子：
3.7
作者：
Terzibasi E;Valenzano DR;Benedetti M;Roncaglia P;Cattaneo A;Domenici L;Cellerino A
通讯作者：
Cellerino A
影响因子：
3.9
作者：
Lucas-Sanchez, A.;Almaida-Pagan, P. F.;Mendiola, P.
通讯作者：
Mendiola, P.
影响因子：
3.4
作者：
Tozzini ET;Dorn A;Ng'oma E;Polačik M;Blažek R;Reichwald K;Petzold A;Watters B;Reichard M;Cellerino A
通讯作者：
Cellerino A
影响因子：
2.3
作者：
Polacik, Matej;Reichard, Martin
通讯作者：
Reichard, Martin
影响因子：
3.3
作者：
Valenzano, Dario Riccardo;Kirschner, Jeanette;Brunet, Anne
通讯作者：
Brunet, Anne