Abundance of dusky dolphins (Lagenorhynchus obscurus) off North and Central Patagonia, Argentina, in spring and a comparison with incidental catch in fisheries

Marine Mammal Science

Volumn 15, Issue 3, 1999, Pages 828-840

  Schiavini, Adrián ^a   Pedraza, Susana N ^a   Crespo, Enrique A ^a   González, Raúl ^b   Dans, Silvana L ^c  

^a Facultad de Ciencias Naturales e Instituto M Lillo   (Argentina)

^b Instituto de Biologia Marina y Pesquera Almirante Storni Rio Negro   (Argentina)

^c Inst Biol Marina P ^*

Author keywords

[No Author keywords available]

Indexed keywords

LAGENORHYNCHUS OBSCURUS;

EID: 0033020924     PISSN: 08240469     EISSN: None     Source Type: Journal    
DOI: 10.1111/j.1748-7692.1999.tb00845.x     Document Type: Note

References (28)

1. ANGELESCU, V., AND A. ANGANUZZI. 1981. Resultados sobre la alimentación de la anchoíta en el área explorada por el B/I Shinkai Maru durante las campañas VI (21/ 09/78-12/10/78) y VIII (20/11/78-19/12/78) en el mar epicontinental argentino. Contribuciones del Instituto Nacional de Investigación y Desarrollo Pesquero 383: 282-298.
2. BJØRGE, A., AND N. ØIEN. 1995. Distribution and abundance of harbour porpoise, Phocoena phocoena, in Norwegian waters. Report of the International Whaling Commission (Special Issue 16):89-98.
3. BUCKLAND, S. T. 1985. Perpendicular distance models for line transect sampling. Biometrics 41:177-195.
4. BUCKLAND, S. T., D. R. ANDERSON, K. P. BURNHAM AND J. L. LAAKE. 1993. Distance sampling. Estimating abundance of biological populations. Chapman & Hall, London.
5. BURNHAM, K.P., D. R. ANDERSON AND J. L. LAAKE. 1980. Estimation of density from line transect sampling of biological populations. Wildlife Monographs 72. 202 pp.
6. COUSSEAU, M. B., D. L. GRU AND J. E HANSEN. 1981. Resultados de dos campañas pelágicas llevadas a cabo por el B/I "Shinkai Maru" en la primavera del año 1978. Contribuciones del Instituto Nacional de Investigación y Desarrollo Pesquero 383: 281-298.
7. CRESPO, E. A., L. M. REYES, M. KOEN AND N. A. GARCÍA. 1994a. Interacciones entre mamíferos marinos y pesquerías en el litoral norpatagónico. Pages 89-96 in J. Oporto, ed. Anales IV Reunion de Trabajo de Especialistas en Mamíferos Acuáticos de América del Sud. Valdivia, Chile.
8. CRESPO, E. A., J. F. CORCUERA AND A. L. LÓPEZ CAZORLA. 1994b. Interactions between marine mammals and fisheries in some coastal fishing areas of Argentina. Report of the International Whaling Commission (Special Issue 15):269-281.
9. CRESPO E.A., S. N. PEDRAZA, M. COSCARELLA, N. A. GARCÍA, S. L. DANS, M. IÑIGUEZ, L. M. REYES, M. KOEN ALONSO, A. C. M. SCHIAVINI AND D. R. GONZÁLEZ. 1997a. Distribution of dusky dolphins Lagenorhynchus obscurus (Gray, 1928) in the southwestern Atlantic ocean with notes on herd size. Report of the International Whaling Commission 47:693-698.
10. CRESPO, E. A., S. N. PEDRAZA, S. L. DANS, M. KOEN ALONSO, L. M. REYES, N. A. GARCÍA, M. COSCARELLA AND A. C. M. SCHIAVINI. 1997b. Direct and indirect effects of the highseas fisheries on the marine mammal populations in the northern and central Patagonian coast. Journal of Northwest Atlantic Fishery Science 22: 189-207.
11. DANS, S. L., E. A. CRESPO, M. K. ALONSO, L. M. REYES AND N. A. GARCÍA. 1993. Biología y ecología del Delfín oscuro (Lagenorhynchus obscurus) en el litoral patagónico. Aspectos preliminares. Pages 142-148 in G. Caille, E. A. Crespo and J. L. Esteves, eds. Actas de las Jornadas Nacionales de Ciencias del Mar '91.
12. DANS, S. L., E. A. CRESPO, S. N. PEDRAZA AND M. KOEN ALONSO. 1997a. Notes on the reproductive biology of female dusky dolphins (Lagenorhynchus obscurus) off the patagonian coast. Marine Mammal Science 13:303-307.
13. DANS, S. L., E. A. CRESPO, N. A. GARCÍA, L. M. REYES, S. N. PEDRAZA AND M. KOEN ALONSO. 1997b. Incidental mortality of Patagonian dusky dolphins in mid-water trawling: Retrospective effects from the early 1980s. Report of the International Whaling Commission 47:699-704.
14. FORNEY, K. A., J. BARLOW AND J. V. CARRETTA. 1995. The abundance of cetaceans in California waters. Part II: Aerial surveys in winter and spring of 1991 and 1992. Fishery Bulletin, U.S. 93:15-26.
15. GOODALL, R. N. P., A. R. GALEAZZI, S. LEATHERWOOD, K. W. MILLER, I. S. CAMERON, R. K. KASTELEIN AND A. P. SOBRAL. 1988. Studies of Commerson's dolphins, Cephalorhynchus commersonii, off Tierra del Fuego, 1976-1984, with a review of information on the species in the South Atlantic. Reports of the International Whaling Commission (Special Issue 9):3-70.
16. GOODALL, R. N. P., A. C. M. SCHIAVINI AND C. FERMANI. 1994. Net fisheries and net mortality cf small cetaceans off Tierra del Fuego, Argentina. Report of the International Whaling Commission (Special Issue 15):295-304.
17. GUNNLAUGSON, T., AND J. SIGURJÓNSSON. 1988. Aerial survey of cetaceans in the coastal waters off Iceland, June-July 1986. Report of the International Whaling Commission 38:489-500.
18. HIBY, A. R., AND P. S. HAMMOND. 1989. Survey techniques for estimating abundance of cetaceans. Reports of the International Whaling Commission (Special Issue 11): 47-80.
19. KASAMATSU, F., AND G. JOYCE. 1995. Current status of odontocetes in the Antarctic. Antarctic Science 7:365-79.
20. KOEN ALONSO, M., E. A. CRESPO, N. A. GARCÍA, S. N. PEDRAZA AND M. COSCARELLA. 1998. Diet of dusky dolphin, Lagenorhynchus obscurus, on the coast of Patagonia, Argentina. Fishery Bulletin, U.S. 96:366-374.
21. LAAKE, J. L., S. T. BUCKLAND, D. R. ANDERSON AND K. P. BURNHAM. 1996. DISTANCE User's Guide V2.1. Colorado Cooperative Fishery & Wildlife Research Unit. Colorado State University, Fort Collins, Colorado. 82 pp.
22. LEATHERWOOD, S., J. R. GILBERT AND D. G. CHAPMAN. 1978. An evaluation of some techniques for aerial censuses of bttlenosed dolphins. Journal of Wildlife Management 42:239-250.
23. LEATHERWOOD, S., R. A. KASTELEIN AND P. S. HAMMOND. 1988. Estimate of numbers of Commerson's dolphins in a portion of the northeastern strait of Magellan, January-February 1984. Reports of the International Whaling Commission (Special Issue 9):93-102.
24. OTERO, H. O., S. I. BEZZI, M. A. RENZI AND G. A. VERAZAY. 1982. Atlas de los Recursos Pesqueros Demersales del Mar Argentino. Contribuciones del Instituto Nacional de Investigación y Desarrollo Pesquero 423. 248 pp.
25. PALKA, D. 1995. Abundance estimate of the Gulf of Maine harbor porpoise. Report of the International Whaling Commission (Special Issue 16):27-51.
26. POLACHECK, T. 1995. Double team field tests of line transects methods for shipboard sighting surveys for harbor porpoise. Report of the International Whaling Commission (Special Issue 16):51-68.
27. VAN WAEREBEEK, K. 1992. Records of dusky dolphins, Lagenorhynchus obscurus (Gray, 1828) in the eastern South Pacific. Beaufortia 43:45-61.
28. WURSIG, B., AND M. WURSIG. 1980. Behavior and ecology of the dusky dolphin, Lagenorhynchus obscurus, in the south Atlantic. Fishery Bulletin, U.S. 77:871-890.