Annexe 3. Japanese Research Report

compiled by

H. Hatanaka

Table 1. Summarized catch statistics of Japanese trawlers in the CECAF area (including the catch by joint ventures with Mauritania)

Species	CECAF Total 1975 1976 1977			Sahara Coastal 1975 1976 1977			C. Verde Coastal 1975 1976 1977
Total (.000 tons)	64.9	41.5	46.2	34.3	31.6	31.8	30.2	9.7	14.4
Flounders	0.9	0.2	0.1	0.2	0.1	0.1	0.7	0.1	f
Grunts	1.3	0.3	0.3	0.6	0.3	0.2	0.6	0.1	0.2
Porgy	1.5	0.2	0.8	0.1	f	f	1.4	0.2	0.8
Red Pandora	3.7	2.9	2.9	1.3	0.7	0.5	2.5	2.2	2.3
Other sparids	3.5	1.5	2.3	0.5	0.3	0.3	2.7	1.1	2.0
Horse mackerels	7.5	3.5	5.8	2.2	1.5	1.2	5.3	2.0	4.6
Cuttlefishes	7.3	2.4	2.4	2.7	1.8	2.0	4.6	0.6	0.4
Squids	1.2	0.4	0.5	0.6	0.3	0.3	0.5	0.1	0.1
Octopus	24.5	24.6	26.1	21.9	23.6	25.2	2.5	1.0	0.9

Table 2. Japanese fishing effort in 1 000 hours by trawler size categories

Year	Under 549 CRT	- 999 GRT	- 1 999 GRT	over 2 000 GRT	Total
1967	50.3	33.4	100.7	35.8	235.8
1968	67.5	39.6	110.5	56.7	274.3
1969	64.7	40.9	114.9	44.6	265.1
1970	62.3	41.7	119.7	31.2	254.9
1971	63.4	51.7	110.4	15.9	241.4
1972*	89.2	44.8	84.3	23.6	290.9
1973*	162.9	39.2	68.6	10.0	280.6
1974*	160.0	43.1	65.5	12.5	281.1
1975*	152.5	39.2	29.5	10.9	232.1
1976*	156.5	30.7	9.4	0.6	197.2
1977*	112.4	13.3	4.1	-	129.8

* Including the effort of joint operations

Table 3. Catch and abundance index of cuttlefishes in the Sahara and C. Verde Coastal Divisions

Year (Apr. - Mar.)	Catch		Abundance index		Standard effort
	Sahara	C. Verde	Sahara	C. Verde	Sahara	C. Verde
1966/67	19.3	1.0	167	-	12.2	-
1967/68	32.3	0.6	162	-	18.1	-
1968/69	24.0	1.9	110	-	20.2	-
1969/70	18.4	2.9	82	116	18.6	3.2
1970/71	9.7	3.0	55	80	14.8	4.3
1971/72	10.0	6.7	56	110	14.0	6.2
1972/73	17.2	6.8	76	151	19.8	3.4
1973/74	12.7	5.2	65	109	16.5	4.3
1974/75	7.1	3.2	36	47	17.3	6.3
1975/76	2.2	4.1	25	37	7.7	12.7
1976/77	1.6	0.4	21	24	7.2	1.4
1977/	(1.5)	(0.4)	(20)	(22)	-	-

(Catch in 1 000 tons; abundance index in kg/hour, statistical block and month in tonnage class of 1 000 - 1 499 GRT; standard effort in 1 000 hours fished per month).

Table 4. Catch and abundance index of Octopus in Sahara Coastal Division (Units as in Table 3)

Year (July- June)	Catch	Abundance index	Standard effort
1964/65	20.6	161	7.9
1965/66	18.9	119	12.0
1966/67	37.6	160	16.8
1967/68	49.3	130	30.9
1968/69	72.8	189	32.9
1969/70	31.2	89	27.6
1970/71	39.6	101	32.9
1971/72	36.8	81	37.5
1972/73	29.1	60	38.4
1973/74	25.4	55	37.5
1974/75	27.6	58	44.6
1975/76	16.5	54	33.9
1976/77	26.5	151	15.7
1977/	(14.7)	(113)	-

Table 5. Catch and abundance index of Squids in Sahara Coastal Division

Year	Catch	Abundance Index	Standard effort
1964	2.7	86	2.9
1965	5.7	68	6.5
1966	3.8	38	9.0
1967	11.4	52	19.1
1968	6.5	33	17.3
1969	5.5	26	16.9
1970	4.2	30	11.8
1971	5.0	54	8.8
1972	4.2	30	11.2
1973	4.2	34	10.1
1974	5.1	43	9.5
1975	0.6	12	5.2
1976	0.3	7	7.7
1977	0.3	12	3.7

(Units as in Table 3)