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6 Acta Theriologica

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Use of radio tracking to improve the estimation by track counts of the relative abudance of red fox

100%

Servin J. I. , Rau J. R. , Delibes M.

1987

tom 32

nr 21-31

Activity pattern of the red fox Vulpes vulpes in Donana, SW Spain

100%

Servin J. , Rau J. R. , Delibes M.

Acta Theriologica

1991

tom 36

nr 3-4

Space use and activity in a mediterranean population of badgers Meles meles

100%

Rodriguez A. , Martin R. , Delibes M.

nr 1

Activity, spatial ecology, and pattern of sett use of a mediterranean population of badgers Meles meles Linnaeus, 1758 are described. Data come from Doñana National Park (SW Spain) where a 1-year radio-tracking study and a 9-year capture-recapture study were carried out. Badger home ranges were spatially structured, territories having an average size that is the largest reported in the literature. There was a correlation between territory size and ecological variables reflecting food patch dispersion. It is suggested that badgers might set territory limits to include enough patches of rabbit burrows in the critical summer period of low rabbit abundance. Badgers were not strictly nocturnal, and showed decreased activity levels in winter. Activity levels were higher in badgers living in dry habitats, and in all badgers during the dry season. Both photoperiod and rabbit availability were suggested as factors influencing activity parameters like activity length or resting intervals during activity periods. Differences in the pattern of use of the main and secondary setts were found between reproductive females and other individuals.

Does size matter? Relating consumed prey sizes and diet composition of otters in South Iberian coastal streams

100%

Clavero M. , Prenda J. , Delibes M.

Acta Theriologica

2007

tom 52

nr 1

We analysed seasonal changes in the sizes of prey [grey mullets (Mugilidae), flatfish (Soleidae), eelAnguilla anguilla and crayfishProcambarus clarkii] consumed by ottersLutra lutra Linnaeus, 1758 in a Mediterranean-climate coastal area and relate them to the frequencies of occurrence of each prey species in otter diet. The sizes of over 1500 otter prey were estimated from measurements of key pieces found in 814 otter spraints, which were collected in lower stream stretches in a sandy coastal area. Clear relationships between mean prey size and frequency of occurrence were observed for the four prey types. These relationships were positive for grey mullets, flatfish and crayfish (ie they occurred more in otter diet when more large individuals were predated), but was negative in the case of eels. Results suggest that these patterns could be related to seasonal changes in habitat use. Previous works in the study area showed that otter concentrate its predation efforts in freshwater stream stretches during spring and summer, when more and larger crayfish are available. Freshwater stretches have neither grey mullets nor flatfish, while eels are larger and scarcer there than near streams’ mouths, where crayfish is absent.

Home range and activity patterns of red fox Vulpes vulpes breeding females

100%

Travaini A. , Aldama J. J. , Laffitte R. , Delibes M.

nr 4

Home range size and activity pattern were evaluated by radiotracking for seven red fox Vulpes vulpes (Linnaeus, 1758) breeding females, in the Doñana Biological Reserve, SW Spain. Mean home range size was 218 ha (SD = 76, n = 7). A home range for one of the seven females was 1129 ha for one nearly complete year and only 253 ha for the same female during the breeding season. We suggest that this size reduction could be a result of energetical and behavioral shifts due to the breeding condition. Activity was slightly increased during nights with long resting periods during light hours. Total mean travelling distances was 6686 m in 24-hour cycles. Daytime and nighttime mean distance covered were 2101 and 4585 m, respectively.

Habitat preference of large grey mongooses Herpestes ichneumon in Spain

100%

Palomares F. , Delibes M.

Acta Theriologica

1990

tom 35

nr 1-2