|--Real Time Data
Curaçao is a computer program that simulates the sterile insect release
method (SIRM) of pest population suppression, first conceived by E. F.
Knipling (1955).* The user can investigate the effects of several variables
on the effectiveness of the method and discover what happens when some
of the basic assumptions of the model are relaxed or violated in some
way. The user should gain some understanding of the sorts of things that
complicate the application of the technique in situations that are more
realistic than those assumed by Knipling in his simple analyses.
The simulation takes place on the Caribbean island of Curaçao where Knipling
first demonstrated the feasibility of sterile insect release. The island
is divided into 2 or 3 zones, with differing numbers of cells (or levels
of spatial resolution) in each zone. The simulation can be either deterministic
or stochastic. There are four factors which can be made density-dependent:
the probability that a female will mate, fecundity, survival, and the
probability of emigration from a cell.
The Native Insect Population dialog box (below) allows you to set
the initial populations of native insects in each of 3 zones and
to set the native population parameters, including the aggregation
index, the probability of emigration, theproportion female, the
eggs/female, and the survival to adult.
The initial release ratios (sterile:fertile) or the initial release
numbers can be set by zone or cell by cell. The release of sterile
males in each zone (or cell) can be by numbers of males or by the
ratio of sterile males to fertile males. The sterile:fertile ratio
can be determined by exact knowledge of the native population or
by an estimate of the native population that varies randomly. The
relative competitiveness of the released, sterile males to the native,
fertile males for mating success can also be varied.
* Knipling, E. F. 1955. Possibilities of insect control or eradication
through the use of sexually sterile males. J. Econ. Entomol. 48:459-62.
- Any system which supports Microsoft Windows 3.0 or later.
- Math coprocessor is strongly recommended.