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Chapitre Troisième: Estimation du niveau d’exploitation
Tableau III.4 - Évaluation de l’effet obtenu lorsqu’on fait varier l’effort des petits métiers (Xpm),
l’effort de la flottille chalutière (Xch) demeurant constant chez C. granulosus (♂ et ♀)
Tableau III.5 – Production totale, valeur totale pour la flottille chalutière (Xch) et la flottille des
petits métiers (Xpm) à efforts variant simultanément chez C. granulosus (♂ et ♀)
Petit métiers
Chalutiers
Facteur X(F)
Production Y(pm) Valeur V(pm)
Production Y(ch)
Valeur V(ch)
0.0
0.0
0.0
0.0
0.0
0.2
684.4
274412.6
578.0
231724.8
0.4
1161.9
466088.1
1007.1
403908.9
0.6
1502.7
603065.0
1330.7
533890.8
0.8
1750.7
702937.5
1578.1
633416.2
1.0
1934.4
777065.6
1769.8
710605.0
1.2
2072.6
832968.1
1919.9
771172.1
1.4
2177.9
875731.6
2038.6
819204.8
1.6
2259.1
908865.1
2133.4
857669.2
1.8
2322.4
934833.1
2209.8
888746.4
2.0
2372.2
955394.7
2271.8
914060.1
2.2
2411.7
971824.4
2322.4
934833.1
2.4
2443.2
985058.6
2364.0
951995.7
2.6
2468.5
995794.3
2398.4
966262.9
2.8
2488.8
1004556.5
2426.9
978189.5
3.2
2518.5
1017667.6
2470.5
996665.6
3.4
2529.2
1022563.7
2487.1
1003830.2
3.8
2544.6
1029987.6
2512.8
1015115.8
4.5
2559.0
1037847.9
2540.8
1028074.3
Mâle
Femelles
Flottille de petit métiers
Flottille chalutière
Flottille de petit métiers
Flottille chalutière
F (Xpm)
Y(pm) Valeur V(pm) F (Xch)
Y(ch)
V(ch)
F (Xpm)
Y(pm)
V(pm)
F (Xch)
Y(ch)
V(ch)
0.0
0.0
0.0
1
876.3
351511.9
0.0
0.0
0.0
1
893.5
359093.1
0.2
312.6
125236.3
1
808.6
324279.2
0.2
275.5
110555.6
1
804.5
323234.5
0.4
476.4
190907.2
1
748.8
300225.6
0.4
433.8
174119.6
1
730.8
293540.3
0.6
575.2
230528.5
1
696.2
279103.2
0.6
535.6
215043.5
1
669.1
268698.6
0.8
640.5
256732.1
1
650.0
260557.6
0.8
606.3
243444.9
1
616.8
247693.3
1.0
687.3
275531.9
1
608.6
243923.1
1.0
658.9
264598.6
1
571.4
229414.5
1.2
721.4
289226.7
1
572.4
229417.1
1.2
698.3
280473.9
1
532.7
213864.1
1.4
748.0
299905.7
1
539.7
216306.9
1.4
729.8
293156.0
1
498.4
200095.6
1.6
768.9
308319.7
1
510.6
204610.5
1.6
755.2
303351.9
1
468.4
188024.4
1.8
786.3
315277.4
1
483.8
193853.0
1.8
776.4
311928.4
1
441.2
177088.0
2.0
800.4
320957.9
1
459.7
184222.7
2.0
794.1
319034.3
1
417.1
167424.9
2.2
812.2
325724.6
1
439.0
175895.2
2.2
809.1
325073.1
1
396.6
159161.6
2.4
822.0
329665.7
1
418.6
167719.3
2.4
821.6
330120.5
1
376.6
151128.7
2.6
830.5
333060.9
1
400.9
160627.0
2.6
832.5
334510.1
1
359.4
144222.3
2.8
838.2
336154.7
1
383.9
153800.2
2.8
842.5
338544.3
1
342.9
137627.0
3.2
850.5
341126.6
1
354.5
142026.1
3.2
858.8
345099.0
1
314.9
126368.3
3.4
855.8
343243.7
1
341.1
136683.4
3.4
865.7
347917.7
1
302.3
121306.4
3.8
864.6
346802.7
1
317.5
127213.3
3.8
877.6
352694.9
1
280.1
112403.3
4.5
876.2
351479.9
1
283.9
113739.4
4.5
893.3
359049.4
1
248.9
99882.8