Essay about The Cuban Spiny Lobster Fishery

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Nationally are observed the typical stages of fishery maturity and decline, reaching today a phase of relative stability from 2006 to the last years (Figure 1). The annual average catch was 4,535 t during 2011-2015, for 32% of the maximum of 14,091 t in 1985. In addition, the estimated annual illegal catch average was 1,021 t for the last 5 years, which represents 18.4 % of the total catch (Figure 1).

Figure 1. Annual official (solid line) and total (dotted line) and total catch in the Cuban spiny lobster fishery.
The log-likelihood resulting from the fitting of the environmental models show a best fitting for the model with the total values for catch and effort (Table 2). Because it provided lower values for the components (mainly for catch at age) and for the total log-likelihood used as objective function.

Table 2. The log-likelihood components resulting from the fitting of the environmental model to official and total values for catch and effort in the Cuban spiny lobster fishery.

The recruitment and stock size estimated by the models showed very similar historical behavior (Figure 2). These reached maximum values in the 80s, with decreasing trend since then to 2011, showing a recovery in the last 5 years. These variables reflect the addition of more catch (illegal fishing) giving higher values in the population estimates.

Figure 2. Annual series of estimated variables according to the environmental model with official (solid line) and total (dotted line) values…

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