Wyniki wyszukiwania - Biblioteka Nauki

Ten serwis zostanie wyłączony 2025-02-11.

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

3 Acta Chiropterologica

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

The dynamics of Mediterranean Horseshoe bat (Rhinolophus euryale, Chiroptera) gut microflora during hibernation

100%

Malinicova L. , Hrehova L. , Maxinova E. , Uhrin M. , Pristas P.

Acta Chiropterologica

2017

tom 19

nr 1

Hibernation is an extraordinary phenomenon evolved in many animals including some mammals, allowing them to survive unfavorable environmental conditions. This period represents a phase of fasting, which is known to affect the gut microflora in nonhibernating mammals. Since during hibernation the physiological parameters (e.g., body temperature) differ from values in nonhibernating individuals, the food starvation is not the only parameter affecting the gut microflora. However, little is known about gut microflora in hibernating mammals. This study is focused on the examination of the gut microflora of Mediterranean horseshoe bat (Rhinolophus euryale) during hibernation. Faecal samples were collected during the winter from November 2014 to March 2015 and subsequently subjected to cultivation, non-cultivation analyses and morphological examination. Cultivation analysis revealed that the numbers of total cultivable bacteria, enterobacteria and enterococci in the faecal samples decreased during the hibernation and restored to pre-hibernation numbers at the end of hibernation. Results of non-cultivation analysis showed time-dependent (but surprisingly almost not individual-specific) changes in the gut microflora and decrease in bacterial variability dependent on hibernation stage. Changes in microflora were accompanied by changes in faecal content identified by morphological analysis. Our results demonstrate that hibernation affects the gut microflora of bats in significant degree in both quantitative and qualitative scale

Foraging strategy of Kuhl's pipistrelle at the northern edge of the species distribution

100%

Maxinova E. , Kipson M. , Nado L. , Hradicka P. , Uhrin M.

Acta Chiropterologica

2016

tom 18

nr 1

Rapid range expansion of Kuhl's pipistrelle (Pipistrellus kuhlii) has been observed throughout Europe, and in addition to its natural habitats of temperate grasslands and agricultural areas, the species is common in city centres, where it roosts in human-made structures. It has been suggested that the flexibility of this species in regard to different human-induced changes, such as climate change and urbanization, is responsible for the apparent range shift. Although P. kuhlii exhibits one of the highest degrees of synanthropy among bat species in Europe, its ecology has thus far not been thoroughly studied. This study aims to describe its foraging and roosting selection in Central Europe (eastern Slovakia), where the northernmost maternity colony of P. kuhlii roosts in human settlements. Radio-tracking was conducted during the pre-parturition and post-lactation periods. We identified six artificial roosts within the study area that were interlinked, with bats switching between them. Ten individuals were used for modelling foraging-habitat utilization, which revealed that bats were highly selective. The only habitat type that bats clearly preferred, regardless of season, was an urban illuminated area close to a river. Only slight avoidance — of open areas — was observed during the pre-parturition period.

Foraging habitat, home-range size and diet of a Mediterranean bat species, Savi's pipistrelle

58%

Kipson M. , Salek M. , Lucan R. , Uhrin M. , Maxinova E. , Bartonicka T. , Andreas M. , Kipson K. , Pusic A. , Rnjak D. , Naďo L. , Horacek I.

nr 2

The Mediterranean is considered one of the richest biodiversity regions in Europe, and bats contribute to this species richness. Within the last two decades, certain bat species traditionally considered as representatives of the Mediterranean have spread northwards and colonized areas outside this region. In our study, we focused on ecological requirements of one of these bat species, the Savi's pipistrelle (Hypsugo savii). We used radio-telemetry and diet analysis to describe habitat use, home-range size and diet composition of reproductive females of Savi's pipistrelle in the traditional core of its distribution range in the Mediterranean region. Our results indicate that Savi's pipistrelle is able to fly long distances and utilize a wide range of habitats within its home-range, with affinities for particular habitats depending on its reproductive status. In particular, pregnant females favoured rocky pastures and forest areas, followed by meadows and riparian habitat, whereas the affinity for riparian habitat increased in lactating females, followed closely by meadows, forest and rocky pastures. The larger affinity for riparian habitats during lactation might indicate its importance for successful rearing of young, which could be influenced in the future by increasing droughts and water shortage in the Mediterranean region. Nevertheless, based on our radio-telemetry and diet analysis the species shows a high degree of flexibility, as an opportunistic forager that flies across large areas on a nightly basis, which may be a good predisposition for colonizing new areas.