effort would be allocated such that average productivity on all grounds

are equal. Given the cross equation parameter restrictions on the state

catch functions, this hypothesis may be tested utilizing the estimated

intercept parameters. These parameters are unconstrained across states

and, hence, serve to estimate the relative average productivities of

vessels fishing out of different states.

 Estimated differences in the intercept terms for all of the esti-

mated state catch equations and the corresponding estimated t-values are

shown in Table 5.


Table 5. Estimated differences in intercepts for the Gulf of Mexico
 Reef Fish Fishery state catch equationsa


State Florida Alabama Mississippi Louisiana Texas

Florida -- --- ---

Alabama 0.78044
 (2.3920)

Mississippi 0.40771 0.3727
 (1.4729) (0.6542)

Louisiana 2.62832 1.84789 2.22059
 (7.3294) (3.2244) (3.750)

Texas 1.53116 0.7507 1.1234 -1.09719
 (8.1322) (1.7429) (2.3636) (-2.2603)

 aNumber in parentheses are estimated t-values.




 6These cross equation parameter restrictions were discussed in the
preceding chapter.