Environmental Engineering Reference
In-Depth Information
(see Table 12.1); therefore, fishing effort on the lobster resource is kept below the
level authorised by the government. The same situation occurs with quotas for
abalone - to better protect the stocks, the cooperatives set quotas that are below the
government-authorised level. A special feature of the cooperatives is that there is
a biologist or technician employed at each of the 9 cooperatives to assist with data
collection and to provide advice and assistance to the cooperative, to the Federation
and to the government agencies.
12.3
Status of the stock
In the 1970s and 1980s, the total catches of P. interruptus from the Pacific coast of
Mexico was around 1300 tonnes, except for the period 1980-1982, when a peak
in catches occurred. Catches of individual cooperatives vary considerably (data are
available but not illustrated here), but the total is relatively stable across the whole
area. However, the catches do vary with lobster availability and oceanographic
conditions. Catches during the 2000-2001 season in most cooperatives were at the
highest level ever recorded.
Catches by commercial fishers in Mexico and the US have been monitored for
long periods and usable data on catches and the number of traps are available since
1928 for Mexico, and since 1916 for the US. Catches over 14 years available at the
time of the assessment are shown in Figure 12.2.
The Mexican government regulations established a management goal to consoli-
date the sustainability of this fishery by optimising its regulatory mechanisms. These
mechanisms include reviewing and adjusting periodically the seasonal scheme by
zone and species, constantly monitoring and modifying the restrictions on fishing
Spiny lobster catch
Baja
USA
2500
Baja,
Mexico USA
Year
Total
88
1116
303
1419
2000
89
1204
332
1536
90
1395
331
1726
91
1143
268
1411
1500
92
1044
263
1307
93
971
233
1205
94
1203
238
1441
1000
95
1396
265
1661
96
1519
323
1843
97
1447
423
1879
98
1351
312
1663
500
99
1404
231
1634
0
1828
320
2148
1
1653
325
1978
0
1988
1991
1994
1997
2000
Years
Figure 12.2 Commercial catches of the spiny lobster Panulirus interruptus in Baja California, Mexico,
and in California, USA.
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