Comparison of early life-stage strategies in temperate freshwater fish species: trade-offs are directed towards first feeding of larvae in spring and early summer

2010 ◽  
Vol 77 (1) ◽  
pp. 257-278 ◽  
Author(s):  
F. Teletchea ◽  
P. Fontaine
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Early Life ◽  
Life Stage ◽  
Early Life Stage ◽  
Early Summer ◽  
Freshwater Fish Species ◽  
First Feeding ◽  
Trade Offs

Toxicity of retene to early life stages of two freshwater fish species

1999 ◽  
Vol 18 (9) ◽  
pp. 2070-2077 ◽  
Author(s):  
Sonya M. Billiard ◽  
Kirsten Querbach ◽  
Peter V. Hodson
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Early Life ◽  
Life Stages ◽  
Early Life Stages ◽  
Freshwater Fish Species

Adult lifetime reproductive value in fish depends on size and fecundity type

2016 ◽  
Vol 73 (9) ◽  
pp. 1405-1412 ◽  
Author(s):  
Stavroula Tsoukali ◽  
Karin H. Olsson ◽  
André W. Visser ◽  
Brian R. MacKenzie
Keyword(s):  
Life History ◽  
Early Life ◽  
Life History Traits ◽  
Life Stage ◽  
Adult Life ◽  
Early Life Stage ◽  
Reproductive Value ◽  
Trade Offs ◽  
Direct Proportionality ◽  
Proportionality Relationship

In a stable population, the adult lifetime reproductive value must be balanced against early life survival. Although delaying maturity may increase fecundity, it also reduces survival. Larger size at maturity therefore not only allows for higher fecundity, but requires it. Using simple arguments from life history, we derive a direct proportionality relationship between the adult lifetime reproductive value and weight at maturation and find that this relationship is consistent with empirical evidence from 28 stocks and species of bony fish from temperate–boreal environments. However, the expected proportionality falls off if mortality increases to include fishing. Furthermore, we find that the fecundity type (determinate or indeterminate) affects the predicted adult reproductive value, which is significantly (10-fold) higher for an indeterminate spawner than for a determinate spawner of the same weight. These differences may relate to trade-offs in the adult life history traits and (or) to seasonality in the spawning environment, with subsequent consequences for early life stage survivorship.

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