Publications Articles/Books/Reports
Articles, Books and Reports
IMA gives assurances for the integrity of the data generated by staff employing approved methods and instrumentation, but it is not liable for inferences or conclusions drawn by third party(ies).
Press Articles
See What's New for recent Press Articles.
Journal Articles, Books and Reports
1. Alleng, G.P. 1997. Coastal wetlands in Trinidad and Tobago—Status and Trends. Institute of Marine Affairs, Chaguaramas
2. Banjoo, D. 2000. Environment Incident Report, Report on the Investigation of the Hydrocarbon Contamination of the Chaguaramas to Port of Spain Area following an Oil spill at Turning Basin in the Port of Spain Harbour
3. Banjoo, D. 2001. Environment Incident Report, Report on the Investigation of the Fish Kill at the Caroni Swamp
4. Banjoo, D. 2004. Assessment of Biota Quality in the Gulf of Paria, Hydrocarbon Component
5. Banjoo, D. 2004. Oil Spill Sampling Manual
6. Banjoo, D. 2008. UNEP/RCU, Monitoring of Regional Hot Spots, Point Lisas, Gulf of Paria, Trinidad and Tobago
7. Banjoo, D., Mootoo, B. S., Ramsewak, R.S., Sharma, R., Lough, A. J., McLean, S., Reynolds. W.F. 2002. New Erythrolides from the Caribbean Gorgonian Octoral Erythropodium caribaeorum. Journal of Natural Products 65(3):314 – 318
8. Banjoo, D., Norville, W. 2001. Environment Incident Report, Report on the Investigation of a Fish Kill at Petrotrin Dams
9. Banjoo, D., Norville, W. 2003. Environment Incident Report, Report on the Fingerprinting Analysis of an Oil Spill at Caridoc, Chaguaramas
10. Banjoo, D., Norville, W. 2003. Environment Incident Report, Report on the Investigation of the Alleged Mercury Spill at the Cipero Water and Sewerage Treatment Plant, Gulf View, San Fernando
11. Banjoo, D.; Maxwell, A. R.; Mootoo, B. S.; Lough, A. J.; McLean, S.; Reynolds. W.F. 1998. Erythrolide K, an unusual diterpene metabolite possessing a bicyclo[8.4.0] tetradecane skeleton. Tetrahedron Letters 39: 1469-1472
12. Bertrand, D., Gerald, L., O’Brien-Delpesh, C., and Romano, H. 1991. Coastlines of Trinidad and Tobago – A coastal stability perspective. In: Coastlines of the Caribbean. American Society of Civil Engineers. Coastal Zone ’91 the 7th Symposium on Coastal and Ocean Management, Long Beach, California, pp. 1-16
13. Brooks, G. 1984. Addendum to the compilation of laws regulating the use of the coastal environment
14. Bullock, C. A. 2005. Potentials sources of bacteriological pollution for two bays with marinas in Trinidad. Revista de Biological Tropical 53(Suppl.1):91-103
15. Bullock, C.A. 1989. Report on a bacteriological survey of Petit Trou Bay, Toco, Trinidad, W.I. from 9th Aug. to 25th Oct. 1989
16. Bullock, C.A. 1991. Report of a bacteriological survey of Maracas Bay, Trinidad, W.I.
17. Bullock, C.A. 1989. Report of a bacteriological survey of Petit Trou Bay, Toco, Trinidad, W.I. from 10th May to 14th June 1989
18. Bullock, C.A. 1989. Report of a bacterial survey of Teteron Bay from 5th to 21st December 1988
19. CARICOMP, 1997a. Caribbean Coastal Marine Productivity (CARICOMP): A research and monitoring network of marine laboratories, parks and reserves. In: Proceedings 8th International Coral Reef Symposium (Lessios, H. A. & MacIntyre, I.G. eds.) 1:641-646
20. CARICOMP, 1997b. Structure and Productivity of mangrove forest in the Greater Caribbean Region. In: Proceedings 8th International Coral Reef Symposium (Lessios, H. A. & MacIntyre, I.G. eds.) 1:669-672
21. CARICOMP, 1997c. Variation in Ecological parameters of Thalassia testudium across the CARICOMP network. In: Proceedings 8th International Coral Reef Symposium (Lessios, H. A. & MacIntyre, I.G. eds.) 1:663-668
22. CARICOMP, 1997d. Meteorological and Oceanographic Characterisation of Coral Reef, Seagrass and Mangrove Habitats in the Wider Caribbean. In: Proceedings 8th International Coral Reef Symposium (Lessios, H. A. & MacIntyre, I.G. eds.) 1:657-662
23. Chin, X and Richardson-Drakes, A. 2004. Age and growth determination of the red hind Epinephelus guttatus from Grenada. Document prepared for the CARICOM Fisheries Resources Assessment and Management Program (CFRAMP)
24. de Souza, G. and Norville, W. 2003. Environment Incident Report, Report of a Fish Kill at Point Lisas and Environs
25. de Souza, G., and Gabbadon, P. 1991. Fingerling production of the cascadura Hoplosternum littorale Hancock 1828. IMA Research Report. Trinidad
26. de Souza, G., and P. Gabbadon. 1989. Feeding studies of cascadura fry Hoplosternum littorale Hancock 1828 under experimental conditions. IMA Research Report. Trinidad.
27. de Souza, G., and P. Gabbadon. 1992. Cascadura Farming from Hatchery to Production. Institute of Marine Affairs Aquaculture Series - 2. Institute of Marine Affairs, Trinidad
28. de Souza, G., P. Gabbadon and A. Titus. 1995. Polyculture of giant fresh prawn (Macrobrachium rosenbergii) and cascadura (Hoplosternum littorale) in earthen ponds in Trinidad. Institute of Marine Affairs Technical Report. Trinidad
29. de Souza, G., P. Gabbadon, and A. Titus. 1996. A comparison of sinking and floating pelletized rations in the production of red hybrid tilapia. IMA Technical Report. Trinidad
31. Edwards, K. 1983. A preliminary description of the nearshore waters of the Gulf of Paria—Northwest Peninsula. Institute of Marine Affairs, Technical Report
32. Gabbadon, P. and G. de Souza. 1985. The Freshwater Conch Pomacea urceus (Muller) as a Potential Culture Species for Trinidad and Tobago. In Proc. 38th Annual Gulf and Caribbean Fisheries Institute
33. Gabbadon, P. W., and F. Chapman. 1996. Use of the Lampricide 3-Trifluoromethyl-4-Nitrophenol (TFM) to Control Tadpoles in Warm-water Ornamental Fish Ponds. The Progressive Fish-Culturist 58: 23-28
34. Gabbadon, P. W., G. de Souza, and A. Titus. 2008. Tilapia Farming: A Manual on Commercial Tilapia Production. Institute of Marine Affairs Aquaculture Series – 3 (2nd Edition) Institute of Marine Affairs, Trinidad
35.Gabbadon, P., and G. de Souza. 1989. Preliminary Studies on Freshwater Prawn Macrobrachium rosenbergii Monoculture in Earthen Ponds in Trinidad. IMA Research Report
36. Gabbadon, P., and G. de Souza. 1990. Fish Farm Ponds – Design, Construction and Maintenance. 1990. Institute of Marine Affairs Aquaculture Series - 1. Institute of Marine Affairs, Trinidad
37.Georges, C. 1983. A survey of Stranded Tar on Trinidad Beaches. Institute of Marine Affairs Research Report
38. Georges, C. 1984. The Impacts of Beach Sand Mining at Turtle Beach, Great Courland Bay, Tobago. Institute of Marine Affairs, Technical Report
39. Georges, C. and Oosdam, B.L. 1983. The characteristics and Dynamics of Tar Pollution on the beaches of Trinidad and Tobago. Marine Pollution Bulletin,14:170-178
40. Glasgow, C. 1983. Compilation of the Laws regulating the use of the coastal environment
41. Goodridge, J. A. 1983. A Review of International Conventions on the Prevention of Pollution by Substances other than oil, industrial, solid and nuclear or radioactive wastes
42. Goodridge, J. A. 1983. A Review of International Regulations and the National legislation of selected countries on the conservation and management of living resources of the sea
43. Goodridge, J. A. 1986. Potentials and Problems of Ocean Management: A Case study of Trinidad and Tobago
44. Goodridge, J. A. 1995. Fisheries joint ventures: the Trinidad and Tobago experience. Caribbean Marine Studies Journal, 4:50-58
45. Goodridge, J. A. 1995. Jurisdiction over development control in the ocean space of island states and archipelagic states with special reference to Trinidad and Tobago. Caribbean Marine Studies Journal, 4:20-29
46. Goodridge, J. A. 2002. Legal and Institutional Mechanisms for Implementing International Environmental Agreements Relevant to the Management of Chaguaramas Bay
47. Goodridge, J. A. 2003. Environmental Monitoring of the Gulf of Paria- Legal Aspects of the Management of the Gulf of Paria
48. Goodridge, J. A. 2004. Coastal Conservation Project of Trinidad and Tobago. Inventory and Monitoring of Wetlands and Seagrass beds of Trinidad and Tobago Phase 1: Preliminary Assessment of the Ecological status of the Godineau Swamp Trinidad. Research Report: Assessment of the Policy, Legal and Institutional Framework for the Management of the Godineau Swamp
49. Gopaul, N. and O’Brien-Delpesh, C. 2004. The Use of the Nearshore Wave Model in Identifying Shoreline Change at Station Beach, La Brea, Trinidad. In: Proceedings of the 8th International Coastal Symposium. Journal of Coastal Research, Special Issue 39
50. Gopaul, N. and Wolf, J. 1996. A numerical model of tidal and wind driven circulation in the Gulf of Paria. Caribbean Marine Studies Journal, 5: 23-40
51. Hassanali, K. 2009. Coastal Conservation Project: An Assessment of the Coral Reefs of Tobago. Institute of Marine Affairs Research Report
52. Hoyte, P.Y. 1986. A preliminary description of currents in the nearshore waters of the Gulf of Paria—Diego Martin to Port of Spain. Institute of Marine Affairs, Research Report
53. Hudson, D., Bachew S. and Williams, E. 1985. Sedimentological and Geophysical Studies in the Oropouche Bank Area, Gulf of Paria, Trinidad. Transactions of the 1st Geological Conference of the Geological Society of Trinidad and Tobago, Port of Spain, pp. 66-77
54. Institute of Marine Affairs. 2004. A Guide to Beaches and Bays of Trinidad and Tobago
55. Juman, R. 2010. Wetlands of Trinidad and Tobago
56. Juman, R. A and Sookbir, S. 2006. Description of the present ecological characteristics of the Godineau Swamp. Institute of Marine Affairs. Research Report
57. Juman, R. A. 2006. Seagrass Monitoring Programme for Trinidad and Tobago 2002-2004. Institute of Marine Affairs. Research Report
58. Juman, R. A. and Bejai, M. 2006. Beam Trawl Survey of the Seagrass Macro-faunal Community in William’s Bay, Chaguaramas. Institute of Marine Affairs. Draft Research Report.
59. Juman, R. A. and Sookbir, S. 2006. Description of the present hydrological regime in the Godineau Swamp. Institute of Marine Affairs. Research Report
60. Juman, R. and Ramsewak, D. 2009. The status of mangrove forests in Trinidad and Tobago, Institute of Marine Affairs. Draft Research Report
61. Juman. R. A. and James, K. 2006. An inventory of seagrass communities around Trinidad and Tobago. Institute of Marine Affairs. Research Report
62. King, A. 1982. Safety manual: analytical laboratories
63. King, A. 1983. Some chemical aspects of petroleum hydrocarbon fingerprinting
65. Kishore, R. 2005. Age and Growth Determination of the lane snapper Lutjanus synagris from Belize and Jamaica. Document prepared for the CARICOM Fisheries Resources Assessment and Management Program (CFRAMP)
66. Kishore, R. and Antoine Malchan, M. (in Press) Local Fisheries Knowledge: A Case Study of Fishing Communities from Ortoire to Guayaguayare, Trinidad. Prepared for International Development Research Centre (IDRC) of Canada.
70. Kishore, R., Chin, X and Ramsundar, R. 2003. Potential Impacts of industrial development on coastal fisheries in the Gulf of Paria, Trinidad. Proceedings of the 54th Annual Gulf and Caribbean Fisheries Institute pp.13-27
71. Kishore, R., H. Ramsundar, and M. Clarke-Marshall. (in Press) Description of the fishery system of fishing communities from Ortoire to Guayaguayare, Trinidad. International Development Research Centre (IDRC) of Canada.
72. Kishore, R., Ramsundar H. and Clarke-Marshall, M. (in Press) Fisheries Co-Management Framework: A Case Study of Fishing Communities from Ortoire to Guayaguayare, Trinidad. Prepared for International Development Research Centre (IDRC) of Canada
73. Kumarsingh, K. Hall, L., Siung-Chang, A.M. , Stoute, V.A. 1998. Phosphorus in sediments of a shallow bank influenced by sewage and sugar factory effluents in Trinidad, West Indies Marine Pollution Bulletin 36(3)
74. Kumarsingh, K., Hall, L., Siung-Chang, A.M. Spatial and temporal variations of particulate and sediment organic matter on a shallow, tropical, estuarine bank off Trinidad, West Indies Caribbean Marine Studies 5:1-13
75. Kumarsingh, K., Khan, A., Mohammed, A. 1991. Participant report on the Subtropical Atlantic Climate Studies cruise no.MB-91-04-STACS, June 18 to July 5th 1991. [Unpublished]
76. Kumarsingh, K., Mohammed, A., Yeates, G. 1991. Participant report on the Subtropical Atlantic Climate study (STACS), Atlantic Climate Change Program (ACCP) Cruise Number MB-91-06 ACCP Sep 6-23 1991, Fortaleza, Brazil to Miami, Florida, 1 vol.
77. Kumarsingh, K., Rajkumar, W., Persad, D. Baseline heavy metal levels in shelf waters of northern Trinidad and Tobago using ion chromatography. Caribbean Marine Studies 4: 76-77
78. Kumarsingh, L., Siung-Chang , Klekowski, E.J., Temple, S. A., 1999. An association of mangrove mutation, Scarlet Ibis, and mercury contamination in Trinidad, West Indies. Environmental Pollution 105 :185-189
79. Kumarsingh, L., Siung-Chang, A.M., Laydoo, R., Chen, J. 1998. Historic records of phosphorus levels in the reef-building coral Montastrea annularis from Tobago, West Indies. Marine Pollution Bulletin, v.36, n.12: 1012-1018
80. La Croix, M., Blake, C., Palmer, N. 1986. Status of fisheries legislation and associated activities in Trinidad and Tobago. Country paper prepared for FAO/WECAFC/CARICOM Workshop on Fisheries Legislation in CARICOM Member States, Bridgetown, Barbados 6-12 May 1986. [Unpublished]
81. Laydoo, R.S., Bonair, K. & Alleng, G. 1998. Buccoo Reef and Bon Accord Lagoon, Tobago, Republic of Trinidad and Tobago. In: Caribbean Coastal Marine Productivity (CARICOMP Coral Reef, Seagrass and Mangrove Site Characteristics (Kjerfve, B. ed.). UNESCO, Paris
82. Maharaj, R.J. 1992. Cut-Slope Stability from the Western Northern Range, Trinidad, West Indies. Memoir II Latin American Symposium on Geological Risks in Urban Areas/II Columbian Seminar on Environmental Geology, Columbia
83. Manickchand-Dass, S. 1987. Reproduction, age and growth of the lane snapper, Lutjanus synagris (Linneaus) in Trinidad, West Indies. Bulletin of Marine science, 40(1):22-28.
84. Manickchand-Heileman, S., and D.A.T. Phillip. 2000. Age and growth of the yellowedge grouper Epinephelus flavolimbatus and the yellowmouth grouper Mycteroperca interstitialis in Trinidad and Tobago. U.S. Fishery Bulletin 98, 290-298
85. Manickchand-Heileman, S.C. and Phillip, D.A.T. 1996. Reproduction, age and growth of the Caribbean red snapper (Lutjanus purpureus) in waters of Trinidad and Tobago. In: Biology, fisheries and culture of tropical groupers and snappers. ICLARM Conf. Proc. 48: 449 p.
86. Manickchand-Heileman, S.C., and J.S. Kenny. 1990. Reproduction, age and growth of the whitemouth croaker Micropogonias furnieri (Desmarest, 1823) in Trinidad waters. Fishery Bulletin. U.S. 88:523-529.
87. Manwaring, G., G. de Souza, P. Gabbadon, and A. Titus. 1993. Marketing the Red Hybrid Tilapia. A Pilot Survey of Retail Fish Markets in Trinidad. IMA Research Report. Trinidad. 15p.
88. Mohammed, A., 2000. Investigations of contamination in the marine areas of Chaguaramas
89. Mohammed, A., 2005. Investigation of heavy metals and butyltin in Chaguaramas, Trinidad. A Thesis submitted in fulfillment of the requirement for the degree of masters of philosophy in chemistry of the University of the West Indies
90. Mohammed, A., Heileman, L.I. 1991. Subsampling errors in active chlorophyll a determination in water samples. Marine Chemistry 33/ 4:353-370
91. Neale, D. B. 1995. Observations of Solitary internal waves in the Boca de Monas, Dragon’s Mouth, Trinidad (the Remous phenomenon). Caribbean Marine Studies Journal, 4: 11-19
92. Neale, D., N. Gopaul, F.S. Teelucksingh and J. Wolf, 1995. Circulation in the Gulf of Paria: On-going studies on the Physical Oceanography of a Semi-enclosed Sea under the influence of the Orinoco River. Paper presented at the Chapman Conference on Circulation of the Intra-America Sea. January 22 -26, 1995. La Parguera, Puerto Rico. IOC Workshop Report No.111 Annex III
93. Nelson, W., Banjoo, D. 2011. Water and sediment quality in a tropical swamp used for agricultural and oil refining activities. Journal of Environmental Science and Health, Part A, 46/2:149-156
94. Norville, W. 2001. Environmental Incident Report. Report of a Fish Kill at the St. James/ Maraval River
95. Norville, W. 2005. Mercury sediments and biota from the Gulf of Paria, Trinidad and Tobago pp.91-94 [Unpublished]
96. Norville, W. 2005. Spatial distribution of heavy metals in sediments from Gulf of Paria, Trinidad. Revista de Biologia Tropical, 53/Suppl.1, pp.33-40
97. Norville, W. 2007. Assessment of Biota quality in the Gulf of Paria: Heavy metals component. Environmental monitoring of the Gulf of Paria
98. Norville, W., Banjoo, D. 2003. Environment Incident Report, Report of a Fish Kill at the Caura River
99. Norville, W., Banjoo, D. 2003. Environment Incident Report, Report of a Fish Kill at the Diego Martin River
100. Norville, W., Banjoo, D. 2006. Preliminary assessment of the Ecological status of the Godineau Swamp, South Trinidad: water and sediment quality component
101. Norville, Wendy, Hubbard, R. 2006. Preliminary investigation of Heavy Metal contamination in selected marine fauna in coastal waters in Chaguaramas:- Investigation of contamination of the marine areas of Chaguaramas: Phase II-Marine fauna
102. O’Brien, C. 1993. Monitoring the Impacts of a Coastal Protection Structure on La Guira Bay, Tobago. In: Coastal Engineering Considerations in Coastal Zone Management. American Society of Civil Engineers. Coastal Zone ’93, the Eight Symposium on Coastal and Ocean Management, New Orleans, Louisiana, pp. 258-273
103. O’Brien, C. and Lawson, D. 1988. Nearshore Processes and Sedimentation at Queen’s and Richemond Bays, Tobago, West Indies. In: Transactions of the 11th Caribbean geological Conference, Barbados, 14:1-14:25
104. Padmanaban, S. (In press) A GIS of the fisheries system and other coastal activities from Ortoire to Guayaguayare. A case study of fishing communities from Ortoire to Guayaguayare, Trinidad. Prepared for International Development Research Centre (IDRC) of Canada.
105. Palmer, N.I. 1983. Review of international standards, policies and practices for the protection of the marine environment from oil pollution
106. Palmer, N.I. 1989. Fisheries provisions in the Third United Nations Convention on the Law of the Sea (1982) and the laws of Trinidad and Tobago
107. Persad, D. 1992. A multi-parameter statistical pattern recognition technique used for fingerprinting of crude and refined petroleum
108. Persad, D. 1992. A synoptic view of the levels of dissolved/dispersed petroleum hydrocarbons (DDPH) in waters of the south-eastern Caribbean. Caribbean Marine Studies, 3:52-56
109. Persad, D., Khan, A., Siung-Chang, A. 1992. Fingerprinting of crude and refined petroleum produced and transported in the Wider Caribbean region
110. Persad, D., Rajkumar, W. 1992. A synoptic view of the levels of dispersed/dissolved petroleum hydrocarbons (DDPH) and heavy metals in the south-eastern Caribbean sea. Caribbean Marine Studies, 3: 52-56
111. Persad, D., Rajkumar, W. 1994. Baseline heavy metal levels in shelf waters of northern Trinidad and Tobago using ion chromatography. Caribbean Marine Studies, v.4:76-77
112. Persad, D., Rajkumar, W. A synoptic view of the levels of dispersed/dissolved petroleum hydrocarbons (DDPH) and heavy metals in the south-eastern Caribbean Sea Caribbean Marine Studies Journal , 3:52-56
113. Persad, D., Rajkumar, W., 1994. Heavy metals and petroleum hydrocarbons in nearshore areas of Tobago, West Indies Marine Pollution Bulletin, 28(11):701-703
114. Ragbirsingh, Y. and Norville, W. 2005. A Geographical Information System (GIS) Analysis for Trace Metals Assessment of Sediments in Gulf of Paria, Trinidad. Revista de Biologia Tropical, 53(Suppl. 1):195-206
115. Rajkumar, W. 1994. Heavy metals and petroleum hydrocarbons in nearshore areas of Tobago, West Indies Marine Pollution Bulletin, 28(11): 701-703
116. Rajkumar, W. 2005. National situation on mercury pollution in Trinidad and Tobago [ A PowerPoint presentation pp.112-114]
117. Rajkumar, W. et al. 1998. Planning and environmental management of heavily contaminated bays and coastal areas in the Wider Caribbean. Case study- Point Lisas, Trinidad and Tobago. Final report - UNEP/IPID Regional Project
118. Rajkumar, W. Kumarsingh, K., Persad, D. 1995. Baseline heavy metal levels in shelf waters of northern Trinidad and Tobago using ion chromatography Caribbean Marine Studies, v.4:76-77
119. Rajkumar, W., 2005. National situation on mercury pollution in Trinidad and Tobago [PowerPoint presentation]
120. Rajkumar, W., Gerald, L., Siung-Chang, A. 1992. Rapid assessment of solid and liquid wastes from livestock production, municipal and domestic activities in Trinidad and Tobago. Journal of the Scientific Association of Trinidad & Tobago, pp.19-23
121. Rajkumar, W.S. 1995. Rapid assessment of air pollution in Trinidad and Tobago
122. Rajkumar, W.S. et al. 2006. Blood lead levels in primary school children in Trinidad and Tobago Science of the Total Environment, 361/1-3: 81-87
123. Rajkumar, W.S., Mungal, R., Bahadoorsingh, V. 1992. Heavy metal concentration in sea water, sediment, and biota (Donax striata) along the east coast of Trinidad. Caribbean Marine Studies 3:26-32
124. Rambarath, V. 2003. A Review of the Laws and Regulations relating to Merchant Shipping in Trinidad & Tobago and existing mechanisms of implementation and enforcement
125.Ramdhanie, N and Banjoo, D. 2007. Environment Incident Report, Report of a Fish Kill at lowlands Tobago
126. Ramsundar, H. and A. Richardson-Drakes, 2003. Age and growth of the queen triggerfish (Balistes vetula) from Montserrat.
127. Ramsundar, H. and Norville, W. 2001. Environment Incident Report, Report on the Investigation of a Fish Kill at Chatham Beach, Cedros
128. Ramsundar, H. and Norville, W. 2006. Environment Incident Report, Report on the Fish Kill in the Southern Gulf of Paria
129. Ramsundar., H, 2007. Age and Growth Studies of Acanthurus chirurgus (Doctorfish) from Montserrat. Draft report.
130. Solomon, F. and Ramsundar, H. 2007. Age and growth determination of Holocentrus adscensionis and H. rufus from Dominica. Draft report.
131. Sturm, M. de. L., and P., Salter, 1990. Age, growth and reproduction of the King mackerel Scomberomorus cavalla (Cuvier) in Trinidad waters. Fishery Bulletin, v.88, n.2:361-370
132. Sturm, M., and G. de Souza. 1984. Triportheus elongatus: A New record of a Characid Fish from Trinidad. In Copeia. American Society of Ichthyologist and Herpetologists.
133. Sturm, M.de.L., and P. Salter. 1990. Age, growth and reproduction of the king mackerel Scomberomorus cavalla (Cuvier) in Trinidad waters. Fishery Bulletin, v.88, n.2. 361-370.