Observations on the sprainting behaviour of the otter Lutra lutra in the NE Spain

• Autorzy: Ruiz-Olmo J. , Gosalbez J.
• Języki publikacji: EN

Abstrakty

EN

In total, 298 transects (each 600 m long) were surveyed between 1987 and 1995 for otter Lutra lutra (Linnaeus, 1758) signs (spraints, smears and jellies) in nine rivers of NE Spain. Also two stretches of the rivers Noguera Ribagor^ana (length 2 km) and Noguera Pallaresa (length 2.6 km) in the Spanish Pyrenees were surveyed monthly between November 1989 and October 1990 for all otter tracks and signs. In both cases, all stones, rocks, beaches, hollows, caves, walls, shelves, and vegetation in the river and bankside within a 5 m band from the river edge (each side) were examined. The type of substrate on which findings were made was noted together with, the number of signs at a site. A seasonal pattern was found for the Pyrenean rivers with greatest sign density in winter and spring. In Mediterranean rivers, seasonality was not evi­dent, founding even more signs in summer in some stretches. A total of 547.0 signs/km were recorded on the river Noguera Ribagor^ana during a year of study, of which 9.6% were smears, 1.0% jellies and 89.4% spraints. On the river Noguera Pallaresa 261.5 signs/km were noted, of which 9.2% were smears, 1.1% jellies and 89.7% spraints. A variation in sign deposition substrata (earth-beaches, grass, and rocks) and site (banks, middle river islands, caves/cracks, and river-stream confluences) throughout the year was observed, in the Noguera Ribagorfana stretch, periods of greatest sign deposition appear to be related to the presence of cubs. In accordance with the theory of the marking of resource use, a number of the spraints might not be significant, but rather the result of immature cub behaviour.

Słowa kluczowe

EN

fluctuation; behaviour; stone; cave; vegetation; otter; hollow; Spain; Lutra lutra; spraint; Pyrenean river; beach; marking behaviour; breeding; wall; rock; distribution; Mediterranean river

• Wydawca: -
• Czasopismo: Acta Theriologica
• Rocznik: 1997
• Tom: 42
• Numer: 3
• Opis fizyczny: p.259-270,fig.

Twórcy

autor

Ruiz-Olmo J.

• Direccio General del Medi Natural, Gran Via de les Corts Catalanes, 612, 08007 - Barcelona, Spain

autor

Gosalbez J.

Bibliografia

• Carss D. N. and Parkinson S. G. 1996. Errors associated with otter Lutra lutra faecal analysis. I. Assessing general diet from spraints. Journal of Zoology, London 238: 301-317.
• Conroy J. W. H. and French D. D. 1987. The use of spraints to monitor populations of otters (Lutra lutra L.). Symposia of the Zoological Society of London 58: 247-262.
• Conroy J. W. H. and French D. D. 1991. Seasonal patterns in the sprainting behaviour of otters (Lutra Intra L.) in Shetland. |In: Proceedings of 5th International Otter Colloquium, Hankensbiittel 1989. C. Reuther and R. Rochert, eds]. Habitat 6: 159-166.
• Delibes M. 1990. La nutria (Lutra lutra) en Espafia, Serie Tecnica. ICONA, Madrid: 1-198.
• Delibes M,, Macdonald S. M. and Mason C. F. 1991. Seasonal marking, habitat and organochlorine contamination in otters (Lutra lutra): a comparison between catchments in Andalucia and Wales. Mammalia 55: 567-578.
• Durbin L. 1989, Some responses of otters Lutra lutra to strange and familiar spraints, Lutra 32: 132-138.
• Erlinge S. 1968. Territoriality of the Otter Lutra lutra L. Oikos 19: 81-98.
• Folch R. (ed) 1984. Vegetacio. [In: Historia Natural dels Pai'sos Catalans, 7]. Enciclopedia Catalana, Barcelona: 1-442.
• Gorman L. G., Jenkins D. and Haprper R. J. 1978. The anal scent sacs of the otter (Lutra lutra). Journal of Zoology, London 186: 463-474.
• Greeen J., Green R. and Jefferies D. J. 1984. A radio-tracking survey of otters Lutra lutra on a Perthshire river system, Lutra 27: 85-145.
• Heggberget T. M. 1993. Reproductive strategy and feeding ecology of the Eurasian Otter Lutra lutra. Dr Sc thesis. University of Trondheim, Trondheim: 1-24.
• Jahrl J. 1996. Marking behaviour of Lutra lutra in Austria. [In: Proceedings of 6th International Otter Colloquium, Pietermaritzburg fSouth Africa) 1993. C. Reuther and D. Rowe-Rowe, eds|. Habitat 11: 131-134.
• Jefferies D. J. 1986. The value of otter (Lutra lutra) surveying using spraints: an analysis of its success and problems in Britain. Journal of Otter Trust 1985: 25-32.
• Jenkins D. and Burrows D. 1980. Ecology of otters in northern Scotland. III. The use of faeces as indicators of otter (Lutra lutra) density and distribution. Journal of Animal Ecology 49: 755—774,
• Kruuk II. 1991. Scent marking by otters (Lutra lutra): signaling the use of resurces. Behavioural Ecology 3: 133-140.
• Kruuk H. 1995. Wild otters. Predation and populations. Oxford University Press, Oxford: 1-304.
• Kruuk H. and Conroy J. W. H. 1987. Surveying otters Lutra lutra populations: A discussion of problems with spraints. Biological Conservation 41: 179-183.
• Kruuk H., Conroy J. W. H., Glimmrveen U. and Ouwererk E. J. 1986. The use of spraints to survey populations of otters Lutra lutra. Biological Conservation 35: 187-194.
• Lenton E. J., Chanin P. R. F. and Jefferies D. J. 1980. Otter survey of England 1977-79. Nature Conservance Council, London: 1-75,
• Lodé T. 1996. Variations de la frequence de marquage de Lutra Íuíradans Pouest de France. Cahiers d'Ethologie 15(2-3-4): 245-250.
• López-Nieves P. and Hernando J. A. 1984. Food habits of the otter (Lutra lutra L., 1758) in central Sierra Morena (Cordoba, Spain). Acta Theriologica 29: 383-401.
• Macdonald S. M. and Mason C. F. 1987. Seasonal marking in an otter population. Acta Theviologica 32: 449-462.
• Mason C. F. and Macdonald S. M. 1986. Otters. Ecology and conservation. Cambridge University Press, Cambridge: 1-236.
• Mason C, F, and Macdonald S. M. 1991. Assessment of otter (Lutra lutra) survey methods using spraints. [In: Proceedings of 5th International Otter Colloquium, Hankensbüttel 1989. C. Reuther and R, Rochert, eds]. Habitat 6: 167-170.
• Ostman J., Hillegaart V. and Sandegreen F. 1984. Behavioural changes in captive female otters (Lutra lutra) around parturition. Otters 1: 58-63.
• Palomares F., Delibes M., Adrián M. I., Rodriguez A. and Moreno S. 1988. Variación estacional de la frecuencia de mareaje con heces por Lutra lutra en el bajo Guadalquivir, Suroeste de España. Acta Coloquio Luso-Espanhol de Bacías Hidrológicas e Recursos Zoologicos: 313-318.
• Riba O., de Bols O., Panareda J. M., Nuet J. and Gosálbez J. 1979. Geografía física deis Pasos Catalans. Ketres Ed., Barcelona: 1-226.
• Ruiz-OImo J. 1994. Reproducción y observación de grupos de nutria (Lutra lutra L.) en el norte de España. Miscelíánia Zoologica 17: 225-229.
• Ruiz-Otmo J. 1995a. Estudio bionómico de la nutría (Lutra lutra L., 1758) en aguas continentales de la Península Ibérica. Ph D thesis, University of Barcelona, Barcelona: 1-321.
• Ruiz-Olmo J. 1995b. Visual otter census: a new method. [In: Proceedings of 6th International Otter Colloquium, Pietermarizbourg (South Africa), September 1993. C. Reuther and D. Rowe-Rowe, eds). Habitat 11: 125-130.
• Santanach P. 1986. Geología (I). (In: Historia Natural dels Pai'sos Catalans, 1|. Enciclopdia Catalana, Barcelona: 1-439.
• Sidorovich V. E. 1992. Numbers of otters and approach to population estimation in Byelorussia. 1UCN Otter Specialist Group Bulletin 7: 13-16,
• Trowbridge B. J. 1983. Olfactory communication in the European otter (Lutra lutra). Ph D thesis. University of Aberdeen, Aberdeen: 1—201.
• Watson H. 1978. Coastal otters in Shetland. Chapman & Hall, London & New York: 1-80.