Influence of age and environment on antler traits in Spanish red deer (Cervus elaphus hispanicus)
Tóm tắt
We measured antlers of 484 red deer (Cervus elaphus hispanicus) aged between 1.5 and 13.5 years, from Sierra Morena (Southeast Spain) between 1992 and 1998. We determined the effect of year of birth, season of hunting, age group and farm size on the number of tips, the length, the width and the quality of the antlers. The number of harvested animals, an indicator of population density, was included as a covariable. Highest antler quality is obtained in animals at least seven years old. The lowest quality animals were obtained during the hunting season from October 1995 to February 1996, which coincided with the end of an extended period of drought. The best trophies were harvested during the 1996–1997 season, the period of highest rainfall during the study. Thus environmental conditions have a major influence on antler size. However, animal density had a strong negative effect on certain types of farms, emphasizing the importance of population management.
Tài liệu tham khảo
Adam, C. L.;Kyle, C. E.;Young, P.;Atkinson, T., 1995: Effect of nutritional growth restriction on timing of reproductive development and plasma concentrations of insulin like growth factor and growth hormone in male red deer (Cervus elaphus) reared in constant photoperiod. Anim. Sci.61, 155–160.
Álvarez, G.;Martínez, T.;Martínez, E., 1991: Winter diet of red deer stag (Cervus elaphus L.) and its relationship to morphology and habitat in central Spain. Folia Zool.40, 117–130.
Azorit, C., 1999: Age study and its application to hunting management of deer (Cervus elaphus hispanicus) in eastern Sierra Morena. Ph. D. Dissertation. University of Jaen, Spain.
Azorit, C.;Carrasco, R.;Muñoz-Cobo, J., 1998: Managing red deer populations results in Sierra Morena, Jaén (South of Spain). In:Zomborszky, Z. (ed.) Advances in Deer Biology. Proceedings of the 4th International Deer Biology Congress. Pannon Agricultural University. Faculty of Animal Science Kaposvár, Hungary, pp. 66–69.
Bender, L. C.;Roloff, G. J.;Haufler, J. B., 1994: Antler characteristics as an age discriminator in Michigan elk (Cervus elaphus). Am. Midl. Nat.132, 401–404.
Clutton-Brock, T. H.;Guinness, F. E.;Albon, S. D., 1982: Red deer: behavior and ecology of two sexes. Chicago:University of Chicago Press.
Ferguson, S. H.;Bisset, A. R.;Monthsier, F. 2000. The influences of density on growth and reproduction in moose (Alces alces). Wildlife Biol.6, 31–39.
Frisina, M. R.;Douglass, K., 1993: Number of antler points and antler main beam length in relation to age of Rocky Mountain elk (Cervus elaphus). Proc. Montana Academy of Sciences 1993, 33–38.
Ludwig, J.;Vocke, G., 1990: Die Vereinfachung einer Wachstumsfunktion, dargestellt am Rothirschgeweih. Z. Jagdwiss.36, 219–225.
Marqués de Laula, M., 1987: Formulas Oficiales de Homologación de los Trofeos de Caza. ICONA. Madrid, Spain.
Mata, C., 1993: Posibilidades de mejora del venado: cuernas y canales. In:Arenas, A.;Perea, A. (eds). El ciervo en Sierra Morena. Facultad de Veterinaria. Universidad de Córdoba. Córdoba, pp. 35–49.
Mesia y Figueroa, A., 1978: La caza selectiva del venado. Ed. Sever-Cuesta. Valladolid, Spain.
Müller-Using, D., 1981:Rotwildalter-Merkblatt. 7th edition. Ed. D.J.V. Bonn. 1–24.
SAS, (1992): SAS/STAT User's guide, Release 6.03, SAS Institute Inc. Cary, North Carolina.
Schmidt, K. T.;Stien, A.;Albon, S. D.;Guinness, F. E. 2001: Antler length of yearling red deer is determined by population density, weather and early life-history. Oecologia,127, 191–197.
Soriguer, R. C.;Fandos, P.;Bernáldez, E.;Delibes, J. R., 1994: El ciervo en Andalucía. In:SoriGuer, R. C.;Fandos, P.;Bernaldez, E.;Delibes, J. R. (eds). Junta de Andalucía. Consejería de Agricultura y Pesca. Seville, Spain. 244 p.
Suttie, J. M.;Mitchell, B., 1983: Jaw length and hind foot length as measures of skeletal development of red deer (Cervus elaphus). J. Zool., London, 200, 431–434.
Ullrey, D. E., 1982: Nutrition and antler development in white-tailed deer. In:Brown R. D. (ed.). Antler development in Cervidae. Kingsville: Caesar Kleberg Wildl. Res. Inst., pp. 49–59.
Urquijo, A., 1981: Normas e ideas para el manejo de las reses cervunas. In:Giner (Ed.). Umbría y Solana (Recuerdos y diálogos de montería). Tomo III, El Tornillazo. Madrid, pp. 323–4104.
Valle, F.;Cano, E., 1991: Dinámica de la Vegetación en la Sierra de Andújar. Sierra Morena/Jaén.Actas de las I Jornadas Medioambientales del Parque Natural „Sierra de Andújar“. Diputación Provincial de Jaén. Spain.
Zamora, M.;Barasona, J.;Rodríguez, J., 1976: Contribución al estudio del potencial productivo y cinegético de áreas marginales de la provincia de Córdoba. Bases técnicas para un estudio económico (1). Boletín de la Estación Central de Ecología5, 31–43.
Zejda, J.;Babicka, C., 1983: Variability of antlers in a sika deer (Cervus nippon) population in Czechoslovakia. Folia Zool.32, 225–240.