Neco 2023 Agricultural Science Question 12
Practice objective / multiple choice question 12 from the 2023 Neco Agricultural Science examination.
A tilapia fishery follows the logistic Schaefer model. The carrying capacity of the lake is \(K = 5000\) tonnes and the intrinsic growth rate is \(r = 0.4\) yr^{-1}. Harvest follows \(H = qEB\) where catchability \(q = 0.0005\) tonne^{-1}\,effort^{-1} and effort \(E\) is measured in boat‑days per year. Management requires that the equilibrium biomass be at least 40 % of \(K\) and wishes to maximise the sustainable yield. Determine the optimal effort \(E^{*}\) (boat‑days yr^{-1}) and the corresponding sustainable annual yield (tonnes).
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About This Question
This is Neco 2023 Agricultural Science Question 12. It is one of the objective questions from the 2023 Neco Agricultural Science examination.
Difficulty level: Hard .
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