7. ADOPTION OF THE REPORT

The report was adopted on 23 September 1978 after which the participants thanked the Director and the staff of the Laboratorio de Canarias of the Spanish Institute of Oceanography for their kind hospitality and the facilities they had put at the Group's disposal.

Table 1 DESCRIPTION OF THE FISHERY (1977)

I. RESOURCES

Octopus

MAIN FISHING GROUNDS	Cape Garnett - Cape Barbas 25°30 'N - 23° 30'N	Cape Blanc 21° 00'N - 20°00'N	Nouakchott 19° 00'N - 18° 00'N	Cape Verde (south) 14° 00'N - 13° 30'N
Depth range	0 - 110m (Guerra, 1978a)	0 - 170 m (Bravo de Laguna, per. com.)	0 - 110 m (estimated at the meeting)	0 - 100 m (?)
Major fishing seasons	All the year round. Better catchability in spring and winter	All the year round. Better catchability in spring and winter	Summer	Summer

Cuttlefishes

MAIN FISHING GROUNDS	Cape Garnett - Cape Barbas 25°30 'N - 22° 30 'N	Cape Blanc 21°00 'N - 20°00'N	Nouakchott 18°30'N - 16°30 'N	Cape Verde (south) 14° 00'N - 13°30 'N
Depth range	0 - 130 m (Guerra, per. com.)	0 - 170 m (Bravo de Laguna, per. com.)	0 - 110 m (estimated at the meeting)	0 - 100 m(?)
Major fishing seasons	All the year round	All the year round	All the year round	winter and spring

Squids

MAIN FISHING GROUNDS	Cape Garnett 26°00'N - 23°30 'N	Cape Barbas 23°00'N - 22°00'N	Cape Blanc 21°30'N - 20°30 'N	Cape Verde (south) 15°00'N - 14°00'N
Depth range	0 - 250 m
Major fishing seasons	All the year round	unknown	unknown	winter and spring

II. FLEETS

Octopuses and cuttlefishes

	CAPE GARNETT - CAPE BARBAS			CAPE BLANC		NOUAKCHOTT	CAPE VERDE (SOUTH)
Major fishing countries	Italy, Korea, Morocco, Portugal, Spain			Greece, Japan, Mauritania, Morocco, Portugal, Spain, USSR		Greece, Japan Mauritania, Portugal	Senegal
FLEET SIZE	Spain	No. vessels	GRT	Spain			No. vessels GRT
	Freezer-trawlers Trawlers Pair trawlers Korea	292 100 6 @ 100	250 150 200 ?	Freezer-trawlers only			Freezer- trawlers Ice- trawlers Canoes	(1 (2 (2 (2 100 (only cuttlefish)	399 315 217 175
				Japan	No. vessels	GRT
				Freezer brawlers	(3 (19 (6 (2	300 550 000 500
	Morocco: 20 trawlers (ice)
GEAR	Bottom trawls						Bottom trawls (industrial), jigging (canoes)
Mesh size and changes of mesh size	Spain: 40 mm until July 1977 60 mm thereafter Japan: 30-50 mm until 1977			Japan: Mauritania and Moroco: 70 mm (1975?) Japan: 30-50 mm (1973); 60 70 mm after 1975?			Senegal: ?
BY CATCHES	Spain (4% of the total catch) - sea breams - flatfishes Korea: sea breams, horse mackerel Morocco: sea breams, flatfishes			Spain: sea breams, flatfishes Japan: sea breams, horse mackerel Morocco and Mauritania: - sea breams, flatfishes		Japan; sea breams, horse mackerel Morocco and Mauritania: sea breams, flatfishes	Senegal ; ?
DISCARDING	Spain: - sea breams: 15$ of the total discarding - sardine: 3 - 40% - trachinidae: 5%			Spain: Trachurus trachurus: 25$ Sea breams: 7%

Squids

	CAPE GARNETT - CAPE BARBAS	CAPE BLANC	NOUAKCHOTT	CAPE VERDE (SOUTH)
Major fishing countries	Italy, Japan, Korea, Mauritania, Morocco, Spain, USSR		Senegal
Fleet size	No data available		7 bottom trawlers and 50 canoes
Gear	No data available
Mesh size	No data available
By-catches and discarding	No data available

Table 2
MAIN BIOLOGICAL PARAMETERS

I. OCTOPUS

	Cape Garnett - Cape Barbas		Cape Blanc	Nouakchott	Cape Verde (South)
Fecundity	130,000 to 250,000 eggs/female (exceptionally 400,000)
Spawning seasons	Spring and autumn	(Guerra, 1978 - Appendix 8) (Hatanaka, 1978 - Appendix 11)			Unknown
Size at 1st maturity	Males: 260 g (50 % of males with spermatophores) Females: 1 100 g (50%)				Unknown
Growth	See Section 3.1				Unknown
Mortality	See Section 3.2				Unknown
Recruitment	Unknown
Migrations	Limited displacements				Unknown
Sex ratio	0-20 cm mantle length: 50% (Cort, Perez Gándaras, 1973) 1/; 0-80 cm total length: 50%
	20-25 cm mantle length: decrease (Guerra, 1978, Appendix 9); 80-110 cm total length: decrease
	> 25 cm mantle length: 0% > 110 cm total length: 0%
Weight/length relationship (Abbreviations: W = weight (g) ML = mantle length (cm) TL = total length (cm)	CORT PEREZ GANDARAS (1973) July/Aug W = 0.5856 ML2,7464 Total		HATANAKA (per. com.) W=0,003418 TL3,0370	HATANAKA (per.com.) W = 0,02069 TL3,1361	Unknown
	GUERRA (1978, Appendix 9) April/May W = 0,987 ML2;699 Total W = 1,110 ML2,594 Females W = 0,976 ML2,691 Males GUERRA (1978, appendix 9.) October W = 0,7844 ML2,884 Total HATANAKA (per.com.) W=0,004970 TL2,9259 Total BRAVO BE LAGUNA (per.com.) W=0,0074 ML2,8009 (ML in mm)		BRAVO DE LAGUNA (per. com.) W=0,0145 ML2,2627 (ML in mm)

Table 2 MAIN BIOLOGICAL PARAMETERS

II. CUTTLEFISH

	Cape Garnett - Cape Barbas		Cape Blanc	Nouakchott	Cape Verde (south)
Fecundity	50 - 300 eggs/female (Ikeda et al., 1976)				Unknown
Spawning seasons	All over the year with peak in May-September (Hatanaka			, 1978, Appendix 5)	Unknown
Spawning grounds	Continental shelf 50 m (Ikeda et al. 1976) 2/ (Hatanaka, 1978, Appendix 5)				Unknown
	Cape Garnett - Cintra		off Cape Blanc	off Nouakchott
Size at first maturity .Males .Females	About 12 cm in ML			About 14 cm in ML	Unknown
	About 14 cm in ML
Growth	Preliminary assumptions (A. Guerra, Appendix 10)	1st Year class (in the exploitation phase): 0-13 cm in ML 2nd Year class (in the exploitation phase): 14-24 cm in ML 3rd Year class (in the exploitation phase): > 24 cm in ML			Unknown
Mortality - Recruitment	Unknown
Migrations	Limited inshore migration for spawning				Unknown
Sex ratio	33% (): 67% () in November (A. Guerra, 1978, Appendix:10) 36 % ():64%() in July/Aug (Cort and Perez-Gándaras, 1973)				Unknown
Length/weight relationship W = weight (g) ML = mantle length (cm)	W = 0,1466 ML2,9105 (A. Guerra, 1.0.78, Appendix 10)		Unknown

1/ Cort, J.L. y G. Perez-Gándaras, 1973: Estudios de pesca de los cefalópodos Octopus vulgaris, Sepia officinalis hierredda y Loligc vulgaris del banco pesquero sahariano, Bol. Inst. Ocean. 172: 1 - 63

2/ Ikeda, I. Hatanaka, I. and Kawahara, S.: 1976 Observations on Sepia egg. cluster caught during commercial trawling operations in the CECAF area. FAO Fish. Rep. No. 183: 65-71

Table 3.1
NOMINAL REPORTED CATCHES (in metric tons) OF CEPHALOPODS BY COUNTRIES IN THE NORTHERN ZONE OF CECAF

Division	Country	1966	1967	1968	1969	1970	1971	1972	1973	1974	1975	1976	1977	1978
34.1.1	Japan	1 971	3 570	20	6	3	1	30	7	6	1 056	1 213	1 087
	Morocco	1 191	881	1 052	999	1 746	1 180	609	986	1 255	6 292	524	434
	Spain								6 923	3 389
Total		3 162	4 451	1 072	1 005	1 749	1 181	639	7 916	4.650	7 348	1 737	1 521
34.1.0	Portugal								24 659	28	294	16
	Spain 1/									1 440	224
Total									24 659	1 468	516	16
34.1.3	Bulgaria					81	58	1		149	27
	Italy	9 030	7 210	4 320	5 160	2 400	2 500	300	452	6 999	7 000 E	7 000 E	7 000 E
	Japan	48 544	90 178	106 956	69 942	52 458	50 940	50 949	48 609	38 120	25 446	25 789	27 555
	Poland								168	2
	Portugal									258
	Romania						2	12	18	60	34
	Morocco
	Spain 2/	50 797	54 198	54 736	53 500	45 035	93 542	112 118	56 598	108 019	(120 916)	1 94 058	70 949	37 703
Total		108 371	151 586	166 012	128 603	99 974	146 042	163 380	105 845	153 607	153 423	126 848	110 504
34.3.1	Gambia							2	190	-
	Italy	2 870	3 090	2 880	3 440	1 600	2 625	4 200	2 625	932	1 000 E	1 000 E	1 000 E
	Ivory Coast
	Japan	1.199	1 790	1 983	5 483	3 996	8 210	9 422	7 320	7 828 2	307 7 723	1 700	1 434
	Senegal*							218	660	371	2 591	3 812	3 812 E
Total		4 069	4 880	4 863	8 923	5 596	10 835	13 842	10 795	11 131	11 621	6 512	6 246
zone not identified	Portugal	1 500	2 000	1 600	1 200	1 100					254	131	131 E
	USSR				1 600	1 400	2 800	5 100	4 100	7 100	6 629	9 399	9 000 E
	Greece	2 960	2 718	3 600	5 096	3 733	4 679	3 966	3 922
	Korea, Rep;				2 546	3 544	5 194	5 635	17 112	23 436	28 802	38 897	39 000 E
Total		4 460	4 718	5 200	10 442	9 777	12 673	14 701	25 134	30 536	35 685	48 427	48 131
Total Northern Zone		120 062	165 635	177 147	148 973	117 096	170 731	192 568	174 349	201 392	208 595	183 540	166 402

* 1972 - 75 from Mizuishi I. (1977). Some observations on the cephalopod fisheries of Senegal. CECAF /WP Series 7711 (mimeo) and from FAO/1976 CECAF Statistical Bulletin No. 1 nominal catches 1964 - 1974

E - Estimate

1/ Most of catches for 1973 and 1974 in Division 34.1.2 are probably from 34.1.3 2/
2/ 1978 catch corresponde to catches of freezer trawlers during the first quarter.

Table 3.2
NOMINAL REPORTED CATCHES (in metric tons) OF OCTOPUS BY COUNTRIES IN THE NORTHERN ZONE OF CECAF

Division	Country	1966	1967	1968	1969	1970	1971	1972	1973	1974	1975	4976	1977	1978
34.1.1	Japan	425	465	7				13	2	1
	Spain								2 856	2 031	2 836	38	18
34.1.2	Portugal								4 933	510	12 70
	Spain
34.1.3	Bulgaria
	Italy	2 709	2 163	1 728	1 858	62	42
	Japan	25 220	51 255	72 462	43 986	864	1 000	90	158	2 334	2 334 E	2 334 E	2 334 E
	Portugal					38 249	36 131	30 953	28 063	25 065	21 989	23 629	25 219
	Morocco									28			(5 000) 1/
	Spain 2/	39 278	41 127	41 303	37 768	30 119	67 283	87 267	33 611	62 717	(55 914) 89 715	3/71 616	48 375	23 256
34.3.1	Italy	1 148	1 298	1 440	1 514	592	875	2 100	875	233	233 E	233 E	233 E
	Japan	70	1 078	444	2 068	1 497	1 927	2 041	1 770	3 079	2 536	1 008	877
	Senegal									723	289	289 E	289 E
Zone not identified	Greece
	Portugal	2 960	2 718	3 600	5 096	3 733	4 679	3 966	3 922	6 650	12	17
	Korea, Rep.				1 154	2 134	1 773	1 230	3 708		10 525	19 190	19 190 E
											(96 750) 4/
	TOTAL	71 810	100 104	120 984	93 444	77 250	113 710	127 660	84 898	103 371	130 551	118 354	101 535

1/ Estimate provided by Moroccan scientist
2/For 1976 and 1977 part of catches in 34.1.1 are included, in 34.1.3
3/ Estimate provided by Spanish scientists
4/ Total with estimated catch for 1975 provided by Spanish scientist o

E = Estimates

Table 3.3 NOMINAL REPORTED CATCHES (in metric tons) OF CUTTLEFISHES BY COUNTRIES IN THE NORTHERN ZONE OF CECAF

Division	Country	1966	1967	1968	1969,	1970	1971	1972	1973	1974	1975	1976	1977	1978
34.1.1	Japan	1 269	1 787	2 742	1 258	2		16	1	3
	Spain								2 557		1 776		9
34.1.2	Portugal								14		194
	Spain 1/								103		70
34.1.3	Italy	1 806	2 163	864	1 754	840	750	30	104	1 165	1 000 E	1 000 E	1 000 E
	Japan	19 790	28 742	27 959	20 464	9 901	9 778	14 612	15 930	7 773	2 716*	1 812*	1 976*
	Portugal									171
	Spain	7 346	7 561	7 727	8 861	7 723	13 670	11 951	7 246	26 627	14 708	13 794	15 630	20 402
	Gambia							2	190
	Italy	1 148	1 112	1 008	963	288	625	1 050	875	466	466 E	466 E	466 E
	Ivory Coast										307
	Japan	998	589	1 407	3 336	2 423	6 136	6 821	5 263	3 894	4 585*	559*	419*
34.3.1	Senegal 2/							218	660	1 648	2 302	2 300 E	2 300 E
area not identified	Portugal	1 200	1 700	1 300	1 000	1 000					194	91
	Greece	1 146	1 136	1 215	1 884	2 624	2 901	2 410	1 845
	Korea, Rep.				916	284	2 174	2 511	7 700
	TOTAL	34 703	44 790	44 222	40 436	24 585	36 034	39 621	56 474	41 747	28 318	20 022	21 620

E = Estimate

* = Japanese /Mauritanian Joint Ventures included
1/ = Bulk of catch for 1973 may have come from 34.1.3
2/ = Japanese/Senegalese Joint Ventures and artisanal catches (Mizuishi, 1977)

Table 3.4
NOMINAL REPORTED CATCHES (in metric tons) OF SQUIDS BY COUNTRIES IN THE NORTHERN ONE OF CECAF

Division	Country	1966	1967	1968	1969	1970	1971	1972	1973	1974	1975	1976	1977	1978
34.1.1	Japan	278	1 318	568	706	1	1	1			2
	Spain								1 509	1 358	1 680	486	407
34.1.2	Portugal									28	88	16
	Spain 3/								5 621	930	84
34.1.3	Bulgaria					9	8	1	-	148	27
	Italy	4 515	2 884	1 728	1 548	696	750	180	190	3 500
	Japan	3 535	10 181	6 515	5 335	4 242	4 973	4 181	4 186	5 133	623*	279*	341*
	Poland								168	2
	Portugal									59
	Romania						2	12	-	55		1
											(7 000)1/
	Spain	4 173	5 510	5 706	6 871	7 693	12 589	12 900	10 742	13 674	16 493	8 615	6 869	4 045
34.3.1	Italy	574	680	432	963	720	1 125	1 050	875	233
	Japan	131	123	133	79	69	129	470	255	788	529*	104*	132*
zone not identified	Portugal	300	300	300	200	100					48	23
	USSR				1 600	1 400	2 800	5 100	4 100	7 100	6 629	9.399	9 399 E
	Greece	1 158	522	991	445	421	705	807	1 197
	Korea, Rep.				476	1 126	1 247	1 894	5 704	16 786	18 277	19 707	19 707 E
											(34 987)2/
	TOTAL	14 664	21 518	16 373	18 223	16 477	24 329	26 596	34 547	49 794	44 480	38 630	36 855

E = Estimate
1/ = Estimate provided by Spanish scientists
2/ = Total with estimate provided by Spanish scientists
3/ Part of the catch belongs to 34.1.3

* = Japanese/Mauritanian Joint Ventures included

Table 4
NOMINAL REPORTED CATCHES (in metric tons) OP CEPHALOPODS BY FISHING GROUNDS IN 1976 and 1977.

Species	Year	General NEI	Sahara Coastal (34.1.3)			Cape Verde Coastal (34.3.1)
			C. Garnett G. Barbas	C. Blanc	NEI	Nouakchott	C. Verde South	NEI
Octopus	1976	17	95 345	23 609 1/	2 334 2/	1 008	269 5/	233 2/
	1977	19 190 3/	48 375	25 219	2 334 2/	877	289 5/	233 2/
Cuttlefish	1976	91 6/	13 794	1 812	1 000 2/	559	2 300 5/	466 2/
	1977	-	15 630	1 976	1 000 2/	419	2 300 5/	466 2/
			C. Garnett Cintra	C. Barbas	C. Blanc	NEI	C. Verde South	NEI
Squid	1976	23 6/	-	-	9 678	28 323 4/	-	-
	1977	-	-	-	9 740	26 576 4/	-	-

1/ Some catches in C. Garnett - C. Barbas are included
2/ Estimated Italy
3/ Korean catch
4/ Korean and Spanish catch
5/ Estimated Senegal
6/ Portugal

Table 5
NOMINAL EFFORT DATA FOR JAPANESE AND SPANISH FLEETS

Year	Unit	CECAF Divisions
		Japanese fleet			Spanish fleet
		34.1.1	34.1.3	34.3.1	34.1.1	34.1.3	34.3.1
1973	H	40	236,298	44,310	(406,432
	N				1/(67,671
	D				(20,322
1974	H	126	223,653	57,298	(847,527
	N				1/(141,113
	D				(42,376
1975	H	25	166,434	64,303	1 174,820 2/
	N	18	201,926	65,815	195,607 2/
	D	3	12,168	4,249	58,741
		Cape Blanc		Nouakchott
1976*	H	-	168,891	27,966	1 423,300 2/
	N	-	227,716	31,386	236,979 2/
	D	-	12,291	1,941	71,165
1977	H	-	129,786	33,998	1 446,700 2/
	N	-	177,315	30,284	240,875 2/
	D	-	9,908	2,337	72,335

* Cape Blanc, including the Cape Garnett - Cape Barbas sector (about 5%)

1/ Estimated from the effort data of the "Galicia" factory fleet
2/ Estimated from the effort data of the freezer trawlers

H = Hours
N = Number of hauls
D = Days fishing

Table 6
OCTOPUS (ALL GROUNDS NORTH OF CAPE VERDE)

Years	Total 1/ catch (tons)	CPUE		Combined index of abundance 6/	Corresponding overall, effort (x10³)
		Spain	Japan 5/
1964	10 658		161	190	56
5	63 856		119	141	453
6	71 810		160	189	380
7	101 104		130	154	657
8	120 984		189	223	543
9	93 444	0.244.2/	89	147	636
1970	77 250	0.210 2/	101	141	548
1	113 710	0.212 2/	81	145	784
2	127 660	0.120 2/	60	90	1 418
3	84 898	0.095 2/	55	72	1 179
4	103 371	0.074 2/	58	63	1 641
5	96 461	0.055 3/	54	51	1 891
6	118 065	0.059 4/	151	81	1 458
7	101 246	0.039 4/	(113)	67	1 511

1/ Derived from table 3.2; catches unidentified by species allocated proportionnally to the identified catches
2/ Pescanova fleet (t/h)
3/ Pescanova fleet (original data in t/d converted in t/h based on the 74/75 decline of t/d data
4/ Data from the freezer-trawler fleet converted into Pescanova t/d unit on the basis of the 1975 values
5/ Table 4, Appendix 3
6/ Cpue data expressed in percentages and combined proportionnally to the catches

Table 7
CUTTLEFISHES (ALL GROUNDS NORTH OP CAPE VERDE)

Year	Total catches 1/ (tons)	CPUE		Combined 6/ index of abundance	Estimated overall effort
		Spain	Japan 5/
1966	34 703		319	319	109
1967	44 790		310	310	144
1968	44 222		211	211	210
1969	40 436	.0612/	154	157	258
1970	24 585	.030	102	94	262
1971	36 034	.041	116	114	316
1972	39 403	.036	154	134	294
1973	55 814	.038	125	113	494
1974	40 099	.037	65	89	451
1975	26 016	.0283/	45	67	388
1976	17 722	.0244/	38	61	291
1977	19 320	.0284/	35	71	272

1/ Derived from Table 3.2, catches unidentified by species allocated proportionally to the identified catches
2/ Pescanova fleet (t/h)
3/ Pescanova fleet (original data in t/d converted in t/h based on the 1974/75 decline of t/d data).
4/ Data from the freezer-trawler fleet converted into Pescanova t/d unit on the basis of the 1975 values
5/ Table 3, Appendix 3, Sahara and Cape Verde series combined proportionally to catches
6/ Proportionally to the catches

Table 8
SQUIDS (NORTH OP CAPE VERDE)

Year	Total catch (tons) 1/	Index of abundance 2/	Estimated total effort	Effort (2 years average)
1964	15 423	86	179
1965	14 091	68	207	193
1966	14 664	38	386	297
1967	21 518	52	414	400
1968	16 373	33	496	455
1969	18 223	26	701	599
1970	16 477	30	549	625
1971	24 329	54	451	500
1972	26 596	30	887	669
1973	34 547	34	1 016	952
1974	49 794	43	1 158	1 087
1975	34 987	12	2 916	2 037
1976	38 630	7	5 519	4 218
1977	36 855	12	3 071	4 295

1/ Derived from Table 3.2, catches unidentified by species allocated proportionally to the identified catches.

2/ Table 5, Appendix 3

Table 9
ALL CEPHALQPODS (NORTH OF CAPE VERDE)

Years	Annual catches (000 tons) 1/	Spanish Cpue	Overall estimated effort
1969	149.0	.352 2/	423
1970	117.1	.253	463
1	170.7	.269	635
2	192.4	.158	1 218
3	173.7	.138	1 259
4	199.0	.119	1 672
5	206.0	.095 3/	2 168
6	179.7	.100 4/	1 797
7	162.3	.075 4/	2 101

1/ Derived from table 3.2; catches unidentified by species allocated proportionally to the identified catches

2/ Pescanova fleet (t/h)

3/ Pescanova fleet (original data in t/d converted in t/h based on the 74/75 decline of t/d data

4/ Data from the freezer-trawler fleet converted into Pescanova t/d unit on the basis of the 1975 values

Table 10
MAXIMUM POTENTIAL YIELDS, PRESENT RATES OF EXPLOITATION AND
RANGE OF POSSIBLE CATCH LIMITATIONS FOR CEPHALOPOD STOCKS
IN THE SECTOR NORTH OP CAPE VERDE

STOCKS	Maximum potential yield (tons)	Sustainable yield at F 0.1 (tons)	Annual catch corre spending to the effort level in 1977 (tons)	Annual catch generating an f = f max (tons)	Annual catch generating an f= f 0.1 (tons)
Octopus (all grounds north Cape Verde)	109 000	107 000	106 000	83 000	65 000	130 %
Cuttlefishes (all grounds north Cape Verde)	39 000	38 400	37 000	27 500	21 100	135 %
Squids (all grounds north Cape Verde)	40 200	39 800	29 000	14 300	11 200	195 %
Total Cephalopods (all grounds north Cape Verde)	198 000	195 000	170 000	103 900	81 500	165 %
Cuttlefish, Nouakchott ground	@ 6 200	@ 6 000	-	-	-	-

Figures 1,2,3 - Geographical distribution of the main fishing grounds for:

Octopus (O. vulgaris) 1
Cuttlefishes (Sepia spp.) 2
Squids (Loligo spp.) 3

Figures 6 and 7 - Squids and total cephalopods, all grounds north of Cape Verde: relationship between the index of abundance and the total estimated effort, resulting equilibrium yield curves and resulting levels of catch quota generating F _0.1 and F_max.

Figure 8 - Cuttlefishes, Nouakchott fishing ground: relationship between the index of abundance and the estimated total effort; resulting equilibrium yield curve.