Wyniki wyszukiwania

1

Skaczący rudzielec

100%

Widawska M., Górska-Czekaj M.

Ekonatura

|

2013

|

nr 04

2

Morphology and taxonomy of Rodentoxyuris sciuri Quentin et Tenora, 1974 (Nematoda: Oxyurida: Enterobiinae) with notes on molecular phylogeny

84%

Popiolek M., Hildebrand J., Zalesny G.

Annales Zoologici

|

2009

|

tom 59

|

nr 4

In present paper we supplement and summarize morphological data and taxonomical status of Rodentoxyuris sciuri - a parasite of red squirrel for the first time reported from Poland. Based on molecular data, we made an attempt to find the phylogenetic position of this nematode. Eight individual of squirrels collected from different parts of the city of Wroclaw (Lower Silesia, SW Poland) were subject to standard helminthological dissection. The helminthfauna of Sciurus vulgaris was represented by R. sciuri only, with the prevalence amounting to 100% (all eight individuals were infected) and a mean intensity of infection of 184.13. As a result of sequencing a partial sequence of 18S rDNA was obtained; and the phylogenetic relationships between analyzed species are discussed.

3

Use of forest canopy by European red squirrels Sciurus vulgaris in Northern Greece: claws and the small branch niche

84%

Samaras A., Youlatos D.

Acta Theriologica

|

2010

|

tom 55

|

nr 4

Moving and standing in trees impose multiple problems to arboreal mammals. Among them, the major ones are the negotiation of slender terminal branches and of large vertical supports. Both microhabitats are important as they have been linked alternatively to the evolutionary loss of claws in early primates. Therefore, rates of use of these different supports by claw-bearing arboreal mammals may offer insights to their actual significance in the adaptive evolution of early primates. In this context, canopy, tree crown, branch size, inclination, and texture use were recorded on four adult free ranging European red squirrelsSciurus vulgaris Linnaeus, 1758 in a mixed coniferous forest in northern Greece.S. vulgaris was mainly arboreal, exploiting the terminal branch zone, using frequently oblique and intermediately textured supports<5 cm and moderately large vertical branches. Furthermore, comparative data from other sciurid species and clawed primates showed positive correlations of small and horizontal support use, and negative ones of vertical support use to body mass. These findings show that keeled functional claws do not impede habitual use of slender branches and may not facilitate efficient climbing on large vertical trunks. These observations partly question the association between habitual use of the small branch niche and primate adaptations and lend support to alternative hypotheses, underscoring the importance of inquiring for more complex mechanisms that lead to the evolution of the unique set of primate morphological adaptations.

4

Monitoring small and arboreal mammals by camera traps: effectiveness and applications

84%

Di Cerbo A. R., Biancardi C. M.

Acta Theriologica

|

2013

|

tom 58

|

nr 3

Camera trapping has been widely applied to studies of medium to large terrestrial mammals, but its application to small arboreal mammals has hardly been tested. We employed camera trapping and other conventional monitoring methods during a mammal survey in a Site of Community Importance located within the Adda North Regional Park (Lombardy, Italy). Camera trapping was particularly successful for monitoring arboreal mammals, allowing the first detection of presence of the invasive grey squirrel (Sciurus carolinensis) in an area occupied by indigenous red squirrels (Sciurus vulgaris) and the collection of a large amount of data on squirrels and common dormice (Muscardinus avellanarius). When triggered, cameras were set to record short video clips (10 to 40 s). More than 400 events were recorded and analysed, mainly from the autumn and winter months. The daily activity pattern of both species displayed a trend from two to three activity peaks in summer to a unimodal pattern in winter, with the peaks of the two species temporally separated. Camera trapping could be a useful method also when applied to monitoring small mammals, particularly endangered arboreal or invasive alien species. For instance, the monitoring of the spread of S. carolinensis is particularly important, where the early detection of new population can be crucial for the conservation of indigenous European species. Camera trapping can be an effective addition to traditional survey methods. It provides a simple non-invasive technique for collecting a large amount of data per device with limited human effort.

5

Habitat and drey sities of the red squirrel Sciurus vulgaris Linnaeus 1758 in suburban parks of Wroclaw, SW Poland

84%

Kopij G.

Acta Zoologica Cracoviensia. Ser.A Vertebrata

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2009

|

tom 52A

|

nr 1-2

6

Feeding and hoarding behaviour of the Eurasian red squirrel Sciurus vulgaris during autumn in Hokkaido, Japan

84%

Lee T. H.

Acta Theriologica

|

2002

|

tom 47

|

nr 4

The feeding habits and hoarding behaviour of the Eurasian red squirrel Sciurus vulgaris Linnaeus, 1758 were examined during autumn in Nopporo Forest Park (43°20'N, 141°30'E), in western Hokkaido, Japan. The diet consisted of 32 plant species. Twelve species were both eaten and hoarded (the two most common of which were Abies sachalinensis and Pinus koraiensis), and 20 species were eaten but not hoarded. The distance from where a food item was found to the hoarding spot averaged 50 m and differed significantly according to food type. Walnuts Juglans regia were transported farthest, and chestnuts Castanea crenata to the second farthest from the site of origin. Most food was hoarded beneath the ground surface (95%), but some were hoarded in forks of trees and in small tree holes. Squirrels selected food items of high energy content for hoarding, in preparation for winter and the breeding season.

7

Polskie wiewiorki

67%

Kala B.

Salamandra:Magazyn Przyrodniczy

|

2005

|

nr 1

2-6

8

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Zagęszczenie wiewiórki pospolitej na terenie Arboretum w Rogowie i wykorzystanie przez nią obcych gatunków drzew

67%

Krauze-Gryz D., Mazur K., Gryz J.

Leśne Prace Badawcze

|

2016

|

tom 77

|

nr 1

9

Nieproszeni goscie

67%

Stachon W.

Działkowiec

|

1997

|

nr 10

43

10

Wiewiórka pospolita

67%

Pawlowska P., Szulecka M.

Przyroda Polska

|

2014

|

nr 08

s.23

11

Ruda kitka

67%

Tabor A.

Łowiec Polski

|

1993

|

nr 10

26

12

Molecular characterization of arthropod-borne hematozoans in wild mammals from Brazil, Venezuela and Spain

51%

Criado-Fornelio A., Buling A., Casado N., Gimenez C., Ruas J., Wendt L., Rosa-Farias N., Pinheiro M., Rey-Valeiron C., Barba-Carretero J. C.

Acta Parasitologica

|

2009

|

tom 54

|

nr 3

187-193

A survey of Babesia, Theileria and Hepatozoon was conducted in wild mammals, including the capybara (Hydrochaeris hydrochaeris; n = 14) from Brazil, the jaguar (Panthera onca; n = 2) and crab-eating raccoon (Procyon cancrivorus; n = 4) from Venezuela, and the red deer (Cervus elaphus; n = 70), red squirrel (Sciurus vulgaris; n = 5) and Eurasian pine marten (Martes martes; n = 3) from Spain. Diagnostic procedures included both microscopy and molecular methods (PCR and sequencing of the 18S rRNA gene). Microscopic examination of blood smears revealed no hematozoan infections — unlike the molecular analyses. Nine Brazilian capybaras were found to be infected with Hepatozoon canis (prevalence 64%), two of which were coinfected with a previously unknown babesid (prevalence 14%) loosely related to Theileria equi (90% 18S rRNA gene similarity according to BLAS® analysis). One jaguar and one crab-eating raccoon from Venezuela were infected by H. canis. Four of the red deer were infected with theilerids (5.7% prevalence), two with Theileria sp. and two with T. annulata. One red squirrel and three pine martens were infected with Hepatozoon sp. The isolate form the red squirrel was phylogenetically related to Hepatozoon sp. reported in Spanish bank voles, whereas those infecting the pine martens were related to Hepatozoon felis reported in Spanish cats. In conclusion, the molecular findings show that some non-canid mammals are carriers of H. canis in South America, while red deer may carry T. annulata in Europe. Small mammals in Europe appear to be unlikely hosts of H. canis and H. felis.

13

Ruda, zwinna, czarnooka...

42%

mag

Przyroda Polska

|

2005

|

nr 04

38

Ograniczanie wyników

Skaczący rudzielec

Morphology and taxonomy of Rodentoxyuris sciuri Quentin et Tenora, 1974 (Nematoda: Oxyurida: Enterobiinae) with notes on molecular phylogeny

Use of forest canopy by European red squirrels Sciurus vulgaris in Northern Greece: claws and the small branch niche

Monitoring small and arboreal mammals by camera traps: effectiveness and applications

Habitat and drey sities of the red squirrel Sciurus vulgaris Linnaeus 1758 in suburban parks of Wroclaw, SW Poland

Feeding and hoarding behaviour of the Eurasian red squirrel Sciurus vulgaris during autumn in Hokkaido, Japan

Polskie wiewiorki

Zagęszczenie wiewiórki pospolitej na terenie Arboretum w Rogowie i wykorzystanie przez nią obcych gatunków drzew

Nieproszeni goscie

Wiewiórka pospolita

Ruda kitka

Molecular characterization of arthropod-borne hematozoans in wild mammals from Brazil, Venezuela and Spain

Ruda, zwinna, czarnooka...