Breeding of non-adults and effects of age on productivity in the Spanish Imperial Eagle Aquila adalberti

Ardea

Volumn 96, Issue 2, 2008, Pages 173-180

  Margalida, Antoni ^a   Mañosa, Santi ^b   González, Luis Mariano ^c   Ortega, Enric ^b   Sánchez, Roberto ^d   Oria, Javier ^e  

^a Bearded Vulture Study and Protection Group   (Spain)

^b UNIVERSITY OF BARCELONA   (Spain)

^c Department Environmental Quality   (Spain)

^d TRAGSA   (Spain)

^e Boscaje SL ^*  (Spain)

Author keywords

Aquila adalberti; Breeding parameters; Non adult pairs; Productivity; Spanish Imperial Eagle; Territory quality

Indexed keywords

ADULT; AGE-RELATED DIFFERENCE; ANNUAL VARIATION; FLEDGING; GEOGRAPHICAL VARIATION; POPULATION GROWTH; RAPTOR; REPRODUCTIVE BEHAVIOR;

AQUILA ADALBERTI; AQUILA HELIACA ADALBERTI; AVES;

EID: 56749105432     PISSN: 03732266     EISSN: None     Source Type: Journal    
DOI: 10.5253/078.096.0203     Document Type: Article

References (32)

1. BirdLife International. 2004. Threatened Birds of the World 2004. CD-ROM. BirdLife International, Cambridge.
2. Brommer J.E., Pietiäinen H. & Kolunen H. 1998. The effect of age and first breeding on Ural owl lifetime reproductive success and fitness under cyclic food conditions. J. Anim. Ecol. 67: 359-369.
3. Ferrer M. & Bisson I. 2003. Age and territory-quality effects on fecundity in the Spanish Imperial Eagle (Aquila adalberti). Auk 120; 180-186.
4. Ferrer M., Penteriani V., Balbontín J. & Pandolfi M. 2003. The proportion of breeders as a reliable early warning signal of population decline: evidence from the Spanish imperial eagle in Doñana. Biol. Conserv. 114: 463-466.
5. Forslund P. & Pärt T. 1995. Age and reproduction in birds: hypotheses and tests. Trends Ecol. Evol. 10: 374-378.
6. González L.M. 1991. Historia natural del Águila Imperial Ibérica (Aquila adalberti, Brehm, 1861). Colección Técnica. Instituto para la Conservación de la Naturaleza, Madrid.
7. González L.M., Margalida A., Mañosa S., Sánchez R., Oria J., Molina J.I., Aranda A., Caldera J. & Prada L. 2007. Causes and spatio-temporal variations of non-natural mortality in the vulnerable Spanish Imperial Eagle (Aquila adalberti) during a recovery period. Oryx 41: 495-502.
8. González L.M. & Oria J. 2004. Águila imperial Ibérica, Aquila adalberti. In: Madroño A., González C. & Atienza J.C. (eds) Libro Rojo de las Aves de España: 145-152. Dirección General para la Biodiversidad (MMA) - SEO, Madrid.
9. González L.M., Oria J., Margalida A., Sánchez R., Prada L., Caldera J., Aranda A. & Molina J.I. 2006. Effective natal dispersal and age of maturity in the threatened Spanish Imperial Eagle (Aquila adalberti): conservation implications. Bird Study 53: 285-293.
10. González L.M., Oria J., Sánchez R., Margalida A., Prada L., Caldera J., Aranda A. & Molina J.I. 2008. Status and habitat changes in the endangered Spanish Imperial Eagle Aquila adalberti population during 1974-2004: implications for its recovery. Bird Conserv. Int. 18: 242-259.
11. González L.M., Sánchez R., Oria J. & Calvo A. 2008. Variation of the pre-adult plumage of Spanish imperial eagles. In: González L.M. & Margalida A. (eds) Conservation biology of the Spanish imperial eagle. Ministerio de Medio Ambiente, Madrid.
12. Krüger O. 2005. Age at first breeding and fitness in goshawk Accipiter gentilis. J. Anim. Ecol. 74: 266-273.
13. Lunn N.J., Boyd L.L. & Croxall J.P. 1994. Reproductive performance of female Antarctic fur seals: the influence of age, breeding experience, environmental variation and individual quality. J. Anim. Ecol. 63: 827-840.
14. Margalida A., González L.M., Sánchez R., Oria J. & Prada L. 2007b. Parental behaviour of Spanish imperial eagles Aquila adalberti: sexual differences in a moderately dimorphic raptor. Bird Study 54: 112-119.
15. Margalida A., González L.M., Sánchez R., Oria J., Prada L., Caldera J., Aranda A. & Molina J.I. 2007a. A long-term scale study of the breeding biology of Spanish Imperial eagles. J. Ornirhol. 148: 309-322.
16. Newton I. 1979. Population ecology of raptors. Poyser, Berkhamsted.
17. Newton I. 1989. Lifetime reproduction in birds. Academic Press, London.
18. Newton I. 1998. Population limitation in birds. Academic Press, London.
19. Ortega E., Mañosa S., Margalida A., Sánchez R., Oria J. & González L.M. In press. A description of the demographic recovery of the Spanish imperial eagle (Aquila adalberti). Oryx.
20. Pedrini P. & Sergio F. 2001. Density, productivity, diet, and human persecution of Golden eagle Aquila chrysaetos in the central-eastern Italian Alps. J. Raptor Res. 35: 40-48.
21. Penteriani V., Balbontín J. & Ferrer M. 2003. Simultaneous effects of age and territory quality on fecundity in Bonelli's eagle Hieraaetus fascitatus. Ibis 145: E77-E82.
22. Pyle P., Nur N., Sydeman W.J. & Emslie S.D. 1997. Cost of reproduction and the evolution of deferred breeding in the western gull. Behav. Ecol. 8: 140-147.
23. Reid J.M., Bignal E.M., Bignal S., McCracken D.I. & Monaghan P. 2003. Age-specific reproductive performance in red-billed choughs Pyrrhocorax pyrrhocorax: patterns and processes in a natural population. J. Anim. Ecol. 72: 765-776.
24. Sánchez-Zapata J.A., Calvo J.F., Carrete M. & Martínez J.E. 2000. Age and breeding success of a Golden Eagle Aquila chrysaetos population in Southeastern Spain. Bird Study 47: 235-237.
25. SPSS. 1996. SPSS Reference Guide 7.5. SPSS Inc., Chicago.
26. Sokal R.R. & Rohlf F.J. 1981. Biometry. Freeman and Co., San Francisco.
27. Stearns S.C. 1992. The evolution of life histories. Oxford University Press, Oxford.
28. Steenhof K. 1987. Assessing raptor reproductive success and productivity. In: Giron Pendelton B.A., Millsap BA, Cline K.W. & Bird D.M. (eds) Raptor management techniques manual. National Wildlife Federation, Washington, pp. 157-170.
29. Tavecchia G., Pradel R., Boy V., Johnson A.R. & Cezilly F. 2001. Sex- and age-related variation in survival and cost of first reproduction in greater flamingos. Ecology 82: 165-174.
30. Valverde J.A. 1960. La population d'Aigles imperiaux (Aquila heliaca adalberti) des marismas du Guadalquivir; son evolution depuis un siècle. Alauda 28: 20-26.
31. Weimerskirch H. 1992. Reproductive effort in long-lived birds: age-specific patterns of condition, reproduction and survival in the wandering albatross. Oikos 64: 464-473.
32. Wyllie I. & Newton I. 1991. Demography of an increasing population of sparrowhawks. J. Anim. Ecol. 60: 749-766.