Wyniki wyszukiwania

1

Metric characteristics and sexual dimorphism of the postcranial skeleton of wild cat Felis silvestris in Bulgaria

100%

Petrov I.

Acta Theriologica

|

1992

|

tom 37

|

nr 4

The measurements of scapula, pelvis, humerus, ulna, radius, tibia, femur, and the first three vertebrae of the adult wild cat Felis silvestris Schreber, 1777 from Bulgaria were used in this study. Considerable differences between the sexes were revealed at three levels of significance in most of the sizes of scapula, pelvis, and vertebrae. The males were bigger than the females. No significant differences were found in the limb bones, except in the length of the humerus. Widening of the female pelvis was not observed. The variability of the skeletal parts examined was found to be comparatively low for most of them.

2

The occurrence of wildcats in the southern Swiss Jura Mountains

86%

Dotterer M., Bernhart F.

Acta Theriologica

|

1996

|

tom 41

|

nr 2

Fourteen wildcats Felis siluestris silvestris Schreber, 1777 were trapped in winter 1993 in the southern part of the Swiss Jura Mountains as a bycatch. During the last thirty years of protection the presence of wildcats in Switzerland could be confirmed by a few dead-found individuals, but the status of the species was unknown. This is the first indication of an existing population. Even though the upper distribution limit of wildcats in central and western Europe is described at 800 m a.s.l., most individuals were caught in altitudes from 970 to 1200 m. We registered a higher catching success in south exposed beech forest and in the sycamore forest, than in the northern exposed Norway spruce forest. During snowcover above 30 cm no wildcats were caught. The capture sites were located within distances of 200-1900 m from human settlements.

3

Experience obtained from box trapping and handling wildcats in Slovenia

86%

Potocnik H., Kljun F., Racnik J., Skrbinsek T., Adamic M., Kos I.

Acta Theriologica

|

2002

|

tom 47

|

nr 2

Wildcats Felis silvestris Schreber, 1775 were captured for radio collaring as a part of a study of their spatial distribution and social organisation in southern Slovenia between 1999 and 2001. Double-door box traps, with a roof that bears easily break (bear permeable traps), have been used to capture individuals. The distances between traps were between 550 to 2200 m. They were set out on logging roads and narrow trails in the forest. Nine wildcats, one lynx Lynx lynx (Linnaeus, 1758) and one feral cat were caught as target species and 19 badgers Meles meles and one bear cub Ursus arctos as non-targets. The catching success was 1 wildcat/58 trap-days and seems to be in correlation with the lunar cycle. Overall, 7 males and 2 female wildcats were captured which might indicate sex biased trapping selection. Methodological improvements shortened the time of handling procedures. Improved field protocols as well as restraining and immobilisation procedures increased reliability and safety of drug administrations, decreased potential chances for injuries and reduced overall stress of captured animals.

4

Seasonality and reproduction in wild-living cats in Scotland

86%

Daniels M. J., Wright T. C. M., Bland K. P., Kitchener A. C.

Acta Theriologica

|

2002

|

tom 47

|

nr 1

The definition of the wildcat Felis silvestris Schreber, 1775 in Scotland is contentious, in light of long-term interbreeding with domestic cats F. catus Linnaeus, 1758. Two morphological groupings (Group 1 and Group 2) have previously been proposed to explain the variation found in wild-living cats in Scotland, with Group 1 cats closest to wildcats and Group 2 cats to domestic cats. Data from the reproductive tracts of 185 wild-living cat carcasses and evidence of reproductive activity in 31 live cats were analysed in order to compare reproductive activity between the morphological groups, and in relation to seasonality and existing data on wildcats and domestic cats. For males, Group 2 cats had a greater mean relative testes size than Group 1 cats. Estimated from corpora lutea, there was a suggestion that Group 1 females showed more seasonality in oestrous than Group 2 cats. In all wild-living cats, the mean litter size was 4.3 and estimated birth dates were throughout the year, but least in winter. A high number of pseudopregnancies were recorded. The results were consistent with the hypothesis that Group 2 cats are closer to domestic cats. However, the variation observed in the sample of wild-living cats reported here, suggested that reproduction was neither strictly seasonal nor outside the range observed in some feral cat populations.

5

Craniometrical sex determination of wild cat Felis silvestris in Bulgaria

86%

Petrov I., Nikolov H., Gerasimov S.

Acta Theriologica

|

1992

|

tom 37

|

nr 4

Analyses were made of 118 skull measurements of adult wild cats Felis silvestris Schreber, 1777 from Bulgaria, taken on 24 males, 20 females, and 10 animals whose sex was not known in advance. Group (cluster) analysis of cases, factor analysis, and stepvise discriminant analysis were adapted. The cluster analysis of cases indicated a high level of sex mixture (up to 40%), which suggested the importance of the outliers in the data. Six keys to sexual dimorphism, of very high statistical significance were produced, through the stepvise discriminant analysis. They included from 9 down to 1 variables each, which provided from 100% down to 93.8% of correct sex classification of wild cat skulls.

6

The occurrence of wildcat in the Polish Carpathian Mountains

86%

Okarma H., Sniezko S., Olszanska A.

Acta Theriologica

|

2002

|

tom 47

|

nr 4

The contemporary occurrence of wildcat Felis silvestris (Schreber, 1775) in the Polish part of the Carpathian Mountains was evaluated in 1998-2000 with personal inquiries in all forest inspectorates of Krosno and Kraków Regional Directorates of State Forests and five national parks (NP). Additional information on the presence of wildcat was collected by snow tracking in three winter seasons: 1998/1999 through 2000/2001. Wildcat presence was confirmed only for Bieszczady Mountains, Pogórze Przemyskie, and Beskid Niski Mountains (13 forest inspectorates and 2 national parks: Bieszczady NP and Magurski NP).

7

Feeding ecology of the European wildcat Felis silvestris in Portugal

86%

Sarmento P.

Acta Theriologica

|

1996

|

tom 41

|

nr 4

The feeding ecology of the European wildcat Felis silvestris Schreber, 1777 was studied by analysing 220 scats collected between January and December 1994 at Serra da Malcata Nature Reserve (Portugal). Feeding trials, carried out with a captive male and female, allowed the author to relate the dry excreted weight of prey items in the scats with the fresh biomass ingested. Rodents, particularly Apodemus silvaticus and Microtus lusitanicus, were the dominant component of the diet. Lagomorphs, mostly rabbit Oryctolagus cuniculus, were the second most heavily consumed item in terms of consumed biomass, being more preyed upon, in spring and summer. Although insectivores were regularly consumed throughout the year, this group only represented a small fraction of the total consumed biomass. Reptiles, especially species of Lacer- tidae, were the third most favoured quarry, with higher predator pressure in spring and summer. Bird remains were found at low levels throughout the year. Insects and plants were unimportant items in the diet. The wildcats feeding spectrum showed little variation throughout the year.

8

The changes of distribution and population density of wildcats Felis silvestris Schreber, 1775 in Hyngary between 1987-2001

72%

Heltai M., Biro Z., Szemethy L.

Nature Conservation

|

2006

|

tom 62

37-42

9

Age estimation in Iberian wildcats Felis silvestris, by canine tooth sections

72%

Garcia-Perea R., Baquero R. A.

Acta Theriologica

|

1999

|

tom 44

|

nr 3

We have applied counting of annual cementum lines in canine root to estimate the age of 165 Iberian wildcats Felis silvestris Schreber, 1775. Results indicate that (1) closure of apical foramen of canine root occurs from 6 to 18 months of age, (2) cementum lines are formed in autumn-winter, (3) the first autumn-winter, either a non-continuous line, a continuous "kitten line" or no line can be formed, depending on individual variation in timing of closure of apical foramen, (4) since 7% of wildcats form a kitten line, it needs to be identified in order to avoid an incorrect counting, (5) the first continuous line useful for counting is formed during the second autumn-winter, when animals are 21 months old. For Iberian wildcats, age in years can be estimated by adding 1 to the number of continuous lines. For a more accurate estimation, we propose a formula including months from birth to first line formation, number of annual tines, and months from last line formation to death (A = 9m + Ly + Mm).

10

Iberian wild cat Felis silvestris tartessia predation on rabbit Oryctolagus cuniculus: functional response and age selection

72%

Gil-Sanchez J. M., Valenzuela G., Sanchez J. F.

Acta Theriologica

|

1999

|

tom 44

|

nr 4

Functional response and prey age selection have been studied for predator-prey relationships between the Iberian wild cat Felis silvestris tartessia Miller, 1907 and the rabbit Oryctolagus cuniculus (Linnaeus, 1758) through the study of the seasonal wild cat's diet and variations in rabbit availability in south-east Spain. This prey formed 73,7% of the total consumed biomass and was negatively correlated with trophic diversity. The wild cat showed a functional response approximate to Holling's type 2, exhibiting a high dependence on rabbit. The age class preferred was that of the juvenile rabbit, the smallest age class, and such hunting behaviour may be considered to be opportunistic. Results are discussed within the context of the relationship between the great size of this wild cat subspecies and the body size of the principal Iberian prey in Mediterranean areas, the rabbit.

11

Population status and distribution of the wildcat, Felis silvestris [Felidae, Carnivora], in Transcarpathia [Ukraine]

58%

Bashta A.-T., Potish L.

Nature Conservation

|

2005

|

tom 61

53-59

12

Gastrointestinal parasites of the Iberian lynx and other wild carnivores from central Spain

44%

Rodriguez A., Carbonell E.

Acta Parasitologica

|

1998

|

tom 43

|

nr 3

Between 1991 and 1995 fresh fecal samples from Iberian lynx (Lynx pardinus), wildcats (Felis silvestris), red foxes (Vulpes vulpes), and other carnivore species were collected in two areas of central Spain for isolation of parasite eggs and larvae. Twenty-three gastrointestinal coccidia, cestoda and nematoda species were identified. Common (≥20% prevalence) species were Isospora felis, I. rivolta, Ancylostoma spp., Toxascaris leonina, Toxocara cati, Aelurostrongylus spp., and Physaloptera spp. for the wildcat, I. felis, Taenia spp., Ancylostoma spp., T. leonina, and Toxocara canis for the Iberian lynx, and I. canis, I. vulpis, and Physaloptera spp. for the red fox. In contrast to the pattern found in most similar studies, the distribution of parasitic forms among individual hosts was not overdispersed. Differences in prevalence between host populations were only detected for Physaloptera spp. in the wildcat. Sexual differences in occurrence, prevalence and intensity were not found in any host. The number of parasite species per individual was significantly higher in adult than in subadult hosts, and negatively correlated with a rough index of host body condition. The consistence of parasite species across samples of the same individual host taken at different times was low. In this paper we provide the first data on intestinal parasites for the rare Iberian lynx.

Ograniczanie wyników

Metric characteristics and sexual dimorphism of the postcranial skeleton of wild cat Felis silvestris in Bulgaria

The occurrence of wildcats in the southern Swiss Jura Mountains

Experience obtained from box trapping and handling wildcats in Slovenia

Seasonality and reproduction in wild-living cats in Scotland

Craniometrical sex determination of wild cat Felis silvestris in Bulgaria

The occurrence of wildcat in the Polish Carpathian Mountains

Feeding ecology of the European wildcat Felis silvestris in Portugal

The changes of distribution and population density of wildcats Felis silvestris Schreber, 1775 in Hyngary between 1987-2001

Age estimation in Iberian wildcats Felis silvestris, by canine tooth sections

Iberian wild cat Felis silvestris tartessia predation on rabbit Oryctolagus cuniculus: functional response and age selection

Population status and distribution of the wildcat, Felis silvestris [Felidae, Carnivora], in Transcarpathia [Ukraine]

Gastrointestinal parasites of the Iberian lynx and other wild carnivores from central Spain