Fish biometric measurements were statistically evaluated as categorical predictors of parasite recruitment into fish stocks.
The results show that early life-stage black bream are sensitive to hypoxia and increased salinity, indicating that deterioration in estuarine environmental conditions may have negative effects on spawning success and recruitment to fish populations.
The advantage is that density and frequency dependence, which are known to be important for individual growth and recruitment in fish, can be accounted for.
We developed a benthic standard monitoring unit for recruitment of fishes (SMURF) to sample fishes that settle in coral rubble and tested it on three fringing reefs on the west coast of Barbados, West Indies.
Following settlement and recruitment, most fishes remain at the same location, whether an entire reef patch or just part of a single coral head [5], throughout their entire lives.
Thus, the model assumed no compensation in recruitment after fishing or after the particular population reached a level where density-dependence would occur, as would be expected for a maturing and well-established invasive species population.
Its dynamics are determined by specified predator-prey relationships, recruitment processes, fishing rates, and physical forcing that allow numerical simulation of a mass-balanced trophic model (for details about EwE, see [36]).
At this age at full-gear recruitment, the fishing mortality above which fisheries-induced evolution was predicted to occur differed considerably among gear types.
In years when recruitment of wild fish was poor (e.g., in 2006), progeny (produced in the wild) of captive-bred fish potentially comprised a disproportionate fraction of the subsequent generation.
For example, lionfish have been shown to reduce native fish recruitment on experimental patch reefs in The Bahamas [5] and reductions in reef fish recruitment may be exacerbated by lionfish predation upon juvenile native fish in important nursery habitats such as mangroves and seagrass beds [6] possibly limiting the supply of economically important reef fish recruits [7].
