tilapia: Parameter list for Oreochromis niloticus (Nile tilapia)

In marchtaylor/fishdynr: Fisheries science related population dynamics models

Description

The tilapia data set contains a list of parameters used by other functions in the fishdynr package.

• species. Species name

• growthFun. Name of growth function ("growth_VB" is von Bertalanffy growth function)

• K. Growth constant (for use in von Bertalanffy growth function))

• Linf. Infinite length (for use in von Bertalanffy growth function)

• t0. (hypothetical) time when length equals zero (for use in von Bertalanffy growth function)

• amax. Maximum age

• LWa. Length-weight relationship parameter a (weight~a*length^b)

• LWb. Length-weight relationship parameter b (weight~a*length^b)

• M. Natural mortality

• F. Fishing mortality

• N0. Number of individuals at time 0

• matFun. Name of maturity function ("pmat_w" is a logistic function that includes width, w, of quantiles)

• Lmat. Length at maturity (i.e. where probability of being mature is 50 (for use in "pmat_w" function)

• wmat. Width of length between 25 of transition from immature to mature (for use in "pmat_w" function)

• fec. Number of eggs produced per weight [g] of mature female

• selectFun. Function to use for gear selection. Determines lengths vulnerable to fishing mortality.

• select_p1. Parameter 1 used in "gillnet" selectivity function

• select_p2. Parameter 2 used in "gillnet" selectivity function

• mesh_size. Mesh size [streched length in mm] used in "gillnet" selectivity function

• mesh_size1. Mesh size of smallest reference net used in fitting "gillnet" selectivity function

• select_dist. Distribution type used in "gillnet" selectivity function

• knife_edge_size. Minimum length selected by "knife_edge" selectivity function

• srrFun. Function used for stock-recruitment relationship

• rmax. Maximum recruitment parameter used in "srrBH" stock-recruitment (Beverton-Holt)

• beta. "beta" parameter used in "srrBH" stock-recruitment (Beverton-Holt)

Usage

data(tilapia)

Format

A list containing parameters used on other fishdynr functions

Examples

data(tilapia)
res <- cohortSim(tilapia, t_incr=0.1)
plot(Lt ~ t, res, t="l")

marchtaylor/fishdynr documentation built on May 21, 2019, 11:27 a.m.