TY - JOUR
T1 - Fertilization success in spatially distributed populations of benthic free-spawners
T2 - A simulation model
AU - Claereboudt, Michel
PY - 1999/9/15
Y1 - 1999/9/15
N2 - Fertilization is the first major determinant in reproductive success in free-spawning invertebrates. A spatially-explicit, 3D, diffusion and fertilization model was used to explore the effects of spatial distribution, rate of gamete release and population structure (density and sex ratio) on the larval production of benthic free-spawners. The results of the simulations indicate that high population density, spatial aggregation and high rate of gamete release significantly increase the overall larval production in large populations. Moreover, in a population undergoing even mild fishing pressure, the model predicts a very strong decrease (90%) in larval production. This evidence of sperm limitation suggests that recruitment in some heavily exploited populations of free spawners rely on either natural or human induced refuge populations that act as reservoir for larval production.
AB - Fertilization is the first major determinant in reproductive success in free-spawning invertebrates. A spatially-explicit, 3D, diffusion and fertilization model was used to explore the effects of spatial distribution, rate of gamete release and population structure (density and sex ratio) on the larval production of benthic free-spawners. The results of the simulations indicate that high population density, spatial aggregation and high rate of gamete release significantly increase the overall larval production in large populations. Moreover, in a population undergoing even mild fishing pressure, the model predicts a very strong decrease (90%) in larval production. This evidence of sperm limitation suggests that recruitment in some heavily exploited populations of free spawners rely on either natural or human induced refuge populations that act as reservoir for larval production.
KW - Fertilization model
KW - Fisheries
KW - Free-spawners
KW - Invertebrate
KW - Spatial distribution
UR - http://www.scopus.com/inward/record.url?scp=0033568059&partnerID=8YFLogxK
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U2 - 10.1016/S0304-3800(99)00080-0
DO - 10.1016/S0304-3800(99)00080-0
M3 - Article
AN - SCOPUS:0033568059
SN - 0304-3800
VL - 121
SP - 221
EP - 233
JO - Ecological Modelling
JF - Ecological Modelling
IS - 2-3
ER -