FN Archimer Export Format
PT J
TI Does the concept of spawning per recruit make sense?
BT 
AF ROCHET, Marie-Joelle
AS 1:;
FF 1:PDG-DRV-RH-MAERHA;
C1 IFREMER, Lab Maerha, F-44311 Nantes 03, France.
C2 IFREMER, FRANCE
SI NANTES
SE PDG-DRV-RH-MAERHA
IN WOS Ifremer jusqu'en 2018
IF 1.212
TC 20
UR https://archimer.ifremer.fr/doc/2000/publication-485.pdf
LA English
DT Article
DE ;Teleost fishes;Population dynamics;Life history;Density dependence;Biological reference points
AB Density dependence means that exploited fish populations exhibit earlier maturity, a faster growth rate, increased fecundity and reduced egg size. Here, the consequences of these effects on population dynamics, the estimation of spawning biomass per recruit and associated biological reference points are examined by a simulation model. The model is a self-regenerating model in which the population parameters (age at maturity, growth, fecundity, egg size) vary according to three classes of population abundance. Early life stages are characterized by a size-dependent growth and mortality model. It is concluded that spawning per recruit is an ambiguous concept because, if density dependence occurs in the adult population, the spawning biomass of a cohort is not proportional to the number recruited. This leads to significant level of uncertainty in the estimates of spawning biomass per recruit and the associated biological reference points such as F-low, F-med, F-high and VSPR. 
PY 2000
PD AUG
SO ICES Journal of Marine Science
SN 1054-3139
PU Elsevier
VL 57
IS 4
UT 000089933800035
BP 1160
EP 1174
DI 10.1006/jmsc.2000.0803
ID 485
ER

EF