LITERATURE

BLINDHEIM, J., de BRUIN, G.H.P. and SÆTERSDAL, G. 1980. A survey of the coastal fish resources of Sri Lanka, April - June 1979. Report no. II. Reports on Surveys with the R/V "Dr. Fridtjof Nansen". Bergen, February 1980.

Fig. 1. Survey routes and stations. 25 Sep - 18 Oct 1979.

Fig. 2. Survey routes and stations. 23 Oct - 18 Nov 1979. a) Arakan, b) Delta and Tennasserim.

Fig. 3. Distribution of salinity (‰) at 5 m. 25 Sep - 18 Oct 1979.

Fig. 4. Distribution of temperature (t°C), salinity (‰) and oxygen (ml/l) in three sections of the Arakan coast. 25 Sep - 18 Oct 1979. I) Off Akyab II) Off Sandoway III) Off Bassein

Fig. 5. Distribution of temperature (t°C), salinity (‰) and oxygen in the Delta and Tenasserim areas. 25 Sep - 18 Oct 1979.

Fig. 6. Surface spotting and sonar contacts. a) 25 Sep - 18 Oct 1979, b) 23 Oct - 18 Nov 1979.

Fig. 7. Bottom conditions. a) Arakan area, b) Delta and Tennasserim areas. 1. Even flat bottom, 2. Uneven bottom, 3. Very rough bottom, 4. Steep slope.

Fig. 8. Pelagic fish. Average integrator outputs (mm/nm) within half degree squares. a) 25 Sep - 18 Oct, b) 23 Oct - 18 Nov.

Fig. 9. Pelagic fish. Distribution of integrator outputs (mm/nm) originating from pelagic fish 23 Oct - 18 Nov. a) Arakan, b) Delta and Tenasserim.

Fig. 10. Demersal fish. Average integrator outputs(mm/nm) within half degree squares. a) 25 Sept - 18 Oct, b) 23 Oct - 18 Nov.

Fig. 11. Demersal fish. Distribution of integrator outputs (mm/nm) originating from demersal fish 23 Oct - 18 Nov. a) Arakan area, b) Delta and Tenasserim areas.

TABLE 1. Average catch rates (kg per hour) in bottom trawl. Arakan coast.

FAMILY	DEPTH IN METRES
	10-25	26-50	51-75	76-150	151-250	251-350	351-500
ARIIDAE	9	2		1
CARANGIDAE	8	6	4	31
CLUPEIDAE	38	9
ENGRAULIDAE	1	1
LEIOGNATHIDAE	59	35	6	< 1
LUTJANIDAE	4	8	18
MULLIDAE	4	8	1	1
MURAENESOCIDAE	8	4
NEMIPTERIDAE	2	3	8	8
POLYNEMIDAE	5
POMADASYIDAE	98	49		5
SCIAENIDAE	36	50		4
SCOMBRIDAE	12	15	2	3
STROMATEIDAE	62	2			1	189
SYNODIDAE	4	8	6	10	< 1
TRICHIURIDAE	4	14	< 1	< 1
SHARKS/RAYS	62	1		3
SHRIMPS	17	4	< 1	< 1	< 1	6
PUERULUS SEWELLI
BROTULIDAE					< 1	2
CHLOROPHTHALMIDAE						14
GEMPYLIDAE						58
MYCTOPHIDAE					< 1
PERISTEDIDAE
MOLLUSC						28
MISCELLANEOUS	38	43	21	70	12	35
TOTAL	471	x262	67	138	16	332
NUMBER OF HAULS	9	x19	4	5	2	2

^x One haul yielding 16 tonnes per hour trawling of CLUPEIDAE ENGRAULIDAE, POMADASYIDAE, SCIAENIDAE and TRICHIURIDAE is excluded. This haul will raise the total average catch by approximately 800 kg pr hour.

TABLE 3. Length frequency distributions

TABLE 4. Average catch rates (kg per hour) in bottom trawl. Delta area.

FAMILY	DEPTH IN METRES
	10-25	26-50	51-75	76-150	151-250	251-350	351-500
ARIIDAE	22	34	13	15
CARANGIDAE	1	6	7	1
CLUPEIDAE	3	10	4	1
ENGRAULIDAE	31	5	8	< 1
LEIOGNATHIDAE		25	2	3
LUTJANIDAE		5	66	9
MULLIDAE		11	3	6
MURAENESOCIDAE	27	26	54	6
NEMIPTERIDAE		15	7	11
POLYNEMIDAE	123	14	< 1
POMADASYIDAE		8	3
SCIAENIDAE	124	135	36	14
SCOMBRIDAE		7		5
STROMATEIDAE	1	10	9	< 1
SYNODIDAE		9	2	8
TRICHIURIDAE	33	38	21	11
SHARKS/RAYS	73	124	48	6
SHRIMPS	77	56	26	5		44
PUERULUS SEWELLI						6
BROTULIDAE						12
CHLOROPHTHALMIDAE						33
GEMPYLIDAE						6
MYCTOPHIDAE						8
PERISTEDIDAE
MOLLUSC
MISCELLANEOUS	57	130	17	38		33
TOTAL	572	668	327	140		142
NUMBER OF HAULS	7	12	8	7	0	1

TABLE 5. Length frequency distributions

TABLE 6. Length frequency distributions

TABLE 7. Average catch rates (kg per hour) in bottom trawl. Tenasserim coast.

FAMILY	DEPTH IN METRES
	10-25	26-50	51-75	76-150	151-250	251-350	351-500
ARIIDAE	20	7	11
CARANGIDAE	19	10	12	14
CLUPEIDAE	29	2	< 1
ENGRAULIDAE	x34	< 1
LEIOGNA THIDAE	166	22	6
LUTJANIDAE	1	2	21
MULLIDAE	14	16	20	3
MURAENESOCIDAE	13	9	2
NEMIPTERDAE	6	16	31	4
POLYNEMIDAE	11	1
POMADASYIDAE	32	8	10	15
SCIAENIDAE	39	28	29	71
SCOMBRIDAE	6	1	4
STROMATEIDAE	6	1			< 1	30	5
SYNODIDAE	7	3	14	2	87
TRICHIURIDAE	21	9	4	8
SHARKS/RAYS	22	21	3		29	4	13
SHRIMPS	19	2	3		7	50	24
PUERULUS SEWELLI					6	13	4
BROTULIDAE					8	2	1
CHLOROPHTHALMIDAE						34	33
GEMPYLIDAE					1	7	4
MYCTOPHIDAE					11	13	3
PERISTEDIDAE					140	18	2
MOLLUSC
MISCELLANEOUS	91	23	40	59	28	34	24
TOTAL	x556	182	211	176	318	206	113
NUMBER OF HAULS	x5	8	6	2	3	12	6

^x One haul which yielded 10 tonnes per hour trawling, mainly ENGRAULIDAE, is omitted.

TABLE 9. Length frequency distributions

TABLE 10. Average catch rates (kg per hour) in bottom trawl. Whole Burma coast.

FAMILY	DEPTH IN METRES
	10-25	26-50	51-75	76-150	151-250	251-350	351-500
ARIIDAE	16	13	9	1
CARANGIDAE	8	7	8	13
CLUPEIDAE	24	8	2	< 1
ENGRAULIDAE	19	2	4	< 1
LEIOGNA THIDAE	65	29	4	2
LUTJANIDAE	2	6	40	4
MULLIDAE	5	11	8	4
MURAENESOCIDAE	16	12	24	3
NEMIPTERIDAE	2	10	15	9
POLYNEMIDAE	46	5	< 1
POMADASYIDAE	50	28	5	4
SCIAENIDAE	67	72	26	19
SCOMBRIDAE	7	10	2	4
STROMATEIDAE	28	5	4	< 1	< 1	49	5
SYNODIDAE	3	7	7	8	52
TRICHIURIDAE	18	20	11	7
SHARKS/RAYS	56	43	22	4	18	3	14
SHRIMPS	38	20	12	3	4	44	24
PUERULUS SEWELLI					4	10	3
BROTULIDAE					< 1	3	1
CHLOROPHTHALMIDAE					5	31	33
GEMPYLIDAE					1	16	4
MYCTOPHIDAE					6	11	3
PERISTEDIDAE					84	14	2
MOLLUSC						4
MISCELLANEOUS	93	66	26	52	22	34	24
TOTAL	563	374	230	140	198	219	113
NUMBER OF HAULS	21	39	18	14	5	15	6

NB. The two biggest hauls (10 and 16 tonnes/hour) are not included.

TABLE 11 (continued). Length-weight relationships. Mean length (cm) and weight (kg) of samples.