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1

Historyczne stanowisko susla moregowanego Spermophilus citellus w polnocnej czesci Wyzyny Krakowsko-Czestochowskiej

100%
Skowron B.
Chrońmy Przyrodę Ojczystą
|
2002
|
tom 58
|
nr 4
116-117
2

Nowe stanowisko reintrodukcji susła moręgowanego Spermophilus citellus w Polsce

86%
Wojtaszyn G., Konczak J., Kepel A.
Chrońmy Przyrodę Ojczystą
|
2014
|
tom 70
|
nr 4
Susły moręgowane Spermophilus citellus (Linnaeus, 1766) zostały reintrodukowane na kolejnym stanowisku w Polsce. Zwierzęta wsiedlono 26 lipca 2013 roku na Nizinie Śląskiej w mezoregionie Wysoczyzny Rościsławickiej (UTM XS28). Na suchych łąkach na południe od wsi Rościsławice koło Obornik Śląskich wypuszczono 45 osobników (25 samców i 20 samic). Susły pochodziły z hodowli w ogrodzie zoologicznym w Poznaniu, utworzonej z osobników odłowionych na Węgrzech i Słowacji. Susły wsiedlano przy użyciu klatek aklimatyzacyjnych
3

Trudne dobrego początki czyli jak przywracamy susły polskiej przyrodzie

86%
Kala B., Konczak J.
Salamandra:Magazyn Przyrodniczy
|
2013
|
nr 2
4

Suseł, czyli wielki powrót pewnego gryzonia

72%
Konczak J.
Salamandra:Magazyn Przyrodniczy
|
2013
|
nr 1
5

W krainie susłów

72%
Kaczmarski M., Kubicka A. M.
Bociek. Biuletyn Klubu Przyrodników
|
2018
|
nr 1[133]
6

Testis development and testosterone secretion in captive European ground squirrels before, during, and after hibernation

72%
Strauss A., Hoffmann I. E., Vielgrader H., Millesi E.
Acta Theriologica
|
2008
|
tom 53
|
nr 1
In some hibernating species, an extended euthermic period before spring emergence has been reported during which testicular maturation occurred. In this study, we investigated whether male European ground squirrels Spermophilus citellus (Linnaeus, 1766) develop scrotal testes before or after the termination of hibernation. The course of testis development and testosterone concentrations were examined in young-of-year male ground squirrels (n = 4) before, during, and after their first hibernation. In the environmental chamber, all animals showed regular hibernation patterns with decreasing torpor bout lengths prior to the end of hibernation. Four weeks before hibernation ended, testosterone levels were elevated during spontaneous arousals. Testosterone concentrations peaked during the first 2 months post heterothermy and decreased thereafter. In 2 experimental males, testes descended from the inguinal region into the scrotum shortly before the end of heterothermy. The state of testis development and testosterone secretion corresponded to that found in semi-free-living males at spring emergence. Testis size increased in active animals to maximum widths during weeks 3 and 4 post heterothermy. Scrotal skin pigmentation was absent until heterothermy ended and developed during the first month thereafter. The data suggest that male S. citellus do not need a pre-emergence euthermic period for reproductive development.
7
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Susel moregowany z Zamku Spiskiego [Spissky Hrad] na Slowacji

72%
Wojtas W., Stoklosa-Wojtas A.
Wszechświat
|
2010
|
tom 111
|
nr 10-12
315-316
8

Species-specific and shared features in vocal repertoires of three Eurasian ground squirrels (genus Spermophilus)

58%
Matrosova V. A., Schneiderova I., Volodin I. A., Volodina E. V.
Acta Theriologica
|
2012
|
tom 57
|
nr 1
Along to alarm calls, Eurasian ground squirrels of the genus Spermophilus also produce other call types toward potential predators and rival conspecifics. Individually identified 50 speckled (Spermophilus suslicus), 18 European (S. citellus) and 59 yellow (S. fulvus) ground squirrels were examined for interspecies differences in their vocal repertoires. A separate sample of 116 (90 adult and 26 juvenile) S. suslicus was examined for presence of ultrasound in their alarm calls. In addition, all tonal calls in all the three species were checked for presence of nonlinear phenomena. Calls were elicited by approaching animals in live-traps or near burrows; some types of vocalizations were also recorded during handling. Eight call types, three tonal and five wideband ones, were described. Vocal repertoires were remarkably similar between species, excluding the alarm calls, which were species-specific. Alarm calls with ultrasonic components were found in two individuals of S. suslicus. Concerning nonlinear phenomena, biphonation in alarm calls of S. suslicus, frequency jumps and sidebands in screams of S. citellus, frequency jumps and subharmonics in screams of S. fulvus were found. Results are discussed with literature evidence on audible and ultrasonic vocalizations in ground squirrels.
9

Powrót susła

58%
Lukasik L.
Wiedza i Życie
|
2014
|
nr 03
10

Suseł po łambinowicku. Historia zagłady największej kolonii susła moręgowanego Spermophilus citellus koło Łambinowic na Śląsku Opolskim

58%
Wojtaszyn D., Wojtaszyn G.
Chrońmy Przyrodę Ojczystą
|
2018
|
tom 74
|
nr 2
11

Topographic distribution and daily activity of the European ground squirrel population in Bugacpuszta, Hungary

58%
Katona K., Vaczi O., Altbacker V.
Acta Theriologica
|
2002
|
tom 47
|
nr 1
Factors affecting the population density and daily pattern of activity of the European ground squirrel Spermophilus citellus (Linnaeus, 1766) were studied in two habitats of the Kiskunsag National Park, Hungary. One habitat was dominated by sandy and the other by salty grassland. Population densities were estimated by counting ground squirrel burrow entrances in sample areas with different microhabitat characteristics. Three categories (elevated, level and depressed) were used to describe the spatial distribution of burrows according to microtopography. Daily activity was evaluated by counting the ground squirrels visible on the surface and registering their alarm calls. The highest proportion of ground squirrel holes was found on elevations in the two habitats. Ground squirrels showed a similar daily activity pattern in different areas and in the same season in consecutive years. The daily activity consisted in a morning peak, a midday pause and a less regular afternoon activity period. Human activity had no direct effect on the daily activity pattern. Emission of alarm calls peaked in June, when litters emerge from the maternal burrows.
12

Szansa dla susla

58%
Kala B.
Salamandra:Magazyn Przyrodniczy
|
2004
|
nr 1
49-51
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