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Article << Previous     |         Contents Vol 34(8)

Long-term decline of the European wild rabbit (Oryctolagus cuniculus) in south-western Spain

Sacramento Moreno A F, Juan F. Beltrán B, Irene Cotilla C, Beatriz Kuffner D, Rafael Laffite A, Gloria Jordán E, José Ayala A, Carmen Quintero A, Antonio Jiménez A, Francisca Castro C, Sonia Cabezas A, Rafael Villafuerte C

A Department of Applied Biology, Estación Biológica de Doñana CSIC, Avda. María Luisa s/n, 41013 Seville, Spain.
B Department of Physiology and Zoology, University of Seville, Avda. Reina Mercedes 6, 41012 Seville, Spain.
C Instituto de Investigación en Recursos Cinegéticos (CSIC-UCLM-JCCM), Ronda de Toledo s/n, 13071 Ciudad Real, Spain.
D Universidad Nacional de Córdoba, Avda. Ciudad de Valparaíso s/n, 5000 Córdoba, Argentina.
E Fundación General de la Universidad de Castilla – la Mancha, C/Altagracia, 50 13071 Ciudad Real, Spain.
F Corresponding author. Email: smoreno@ebd.csic.es
 
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Abstract

The European wild rabbit (Oryctolagus cuniculus) is a species native to the Iberian Peninsula, where it was once extremely abundant. It is considered the most important prey item for the peninsula’s assemblage of Mediterranean vertebrate predators, which includes two endangered specialist rabbit feeders, the Spanish imperial eagle (Aquila adalberti) and the Iberian lynx (Lynx pardinus). However, rabbit population trends in Spain have not been accurately documented. In the present study, we analysed trends in a population of European rabbits monitored over 23 years in the Doñana National Park, home to one of the most diverse and densest predator communities in Europe. Rabbit abundance and population trends were estimated using roadside counts. Results show that the rabbit population declined sharply by ~60% during the first wave of epizootic rabbit hemorrhagic disease (RHD) in 1990. Since then, rabbit numbers have declined at a relatively constant rate and the species has become progressively scarcer in the area. The current population is less than 10% of that before the arrival of RHD. However, after the RHD epizootic we observed increasing intra-annual population recruitment. We hypothesise that density-dependent factors caused by enzootic viral diseases (myxomatosis, RHD) and higher predation of rabbits are the main factors preventing recovery of rabbit numbers. The effects of a decline in the prey species on the ecology of sympatric rabbit predators are discussed, and measures to improve ongoing rabbit conservation efforts are suggested.

   
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