Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve
Two lactating females of Brandt’s bat were radio-tracked during 26–28 June 2016 and 14–20 June 2017 in the Polesie State Radiation-Ecological Reserve (Khoiniki district, Gomel region). Four tree roosts of nursery colonies of Brandt’s bat were found. The roosts were detected at the dead oak trees in...
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Dombrovski, V.C. 2020-02-09T12:22:02Z 2020-02-09T12:22:02Z 2018 Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve / V.C. Dombrovski // Theriologia Ukrainica. — 2018. — Т. 16. — С. 91–94. — Бібліогр.: 18 назв. — англ. 2616-7379 DOI: http://doi.org/10.15407/pts2018.16.091 https://nasplib.isofts.kiev.ua/handle/123456789/164392 599.4(476:282.247.322:23.07) Two lactating females of Brandt’s bat were radio-tracked during 26–28 June 2016 and 14–20 June 2017 in the Polesie State Radiation-Ecological Reserve (Khoiniki district, Gomel region). Four tree roosts of nursery colonies of Brandt’s bat were found. The roosts were detected at the dead oak trees in an old oak forest at a distance of 142–870 m from each other. Roosts were located in trunk cracks and behind peeling bark at a height of 4–16 m above the ground. Visual inspection during the evening revealed that the maternity colony consisted of 8–10 individuals of Brandt’s bat. In 2016, there was a mixed colony of Brandt’s bat and the soprano pipistrelle (Pipistrellus pygmaeus). This is the first documented record of maternity colonies of Brandt’s bat and the easternmost finding localities of this species in Belarus. За допомогою радіостеження за двома репродуктивно активними самками нічниці північної протягом 26–28 червня 2016 р. та 14–20 червня 2017 р. в Хойницькому районі Гомельської обл. на території Поліського державного радіаційно-екологічного заповідника виявлено 4 денних сховища даного виду. Вони розташовувалися в сухостійних дубах на висоті 4–16 м у старовіковій розрідженій діброві на відстані 142–870 м один від одного. Візуальним оглядом встановлено, що у 2016 р. колонія налічувала 10 особин нічниці північної та 20–30 особин нетопира пігмея (Pipistrellus pygmaeus), у 2017 р. — 8 особин нічниці північної. Це перші документовані знахідки материнських колоній нічниці північної та найсхідніші з відомих для Білорусі точки реєстрації виду. en Національний науково-природничий музей НАН України Theriologia Ukrainica Ссавці заповідних територій Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve Материнські колонії Myotis brandtii в Поліському державному радіаційно-екологічному заповіднику Article published earlier |
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Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve |
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Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve Dombrovski, V.C. Ссавці заповідних територій |
| title_short |
Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve |
| title_full |
Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve |
| title_fullStr |
Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve |
| title_full_unstemmed |
Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve |
| title_sort |
maternity colonies of myotis brandtii in the polesie state radiation-ecological reserve |
| author |
Dombrovski, V.C. |
| author_facet |
Dombrovski, V.C. |
| topic |
Ссавці заповідних територій |
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Ссавці заповідних територій |
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2018 |
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Theriologia Ukrainica |
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Національний науково-природничий музей НАН України |
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Article |
| title_alt |
Материнські колонії Myotis brandtii в Поліському державному радіаційно-екологічному заповіднику |
| description |
Two lactating females of Brandt’s bat were radio-tracked during 26–28 June 2016 and 14–20 June 2017 in the Polesie State Radiation-Ecological Reserve (Khoiniki district, Gomel region). Four tree roosts of nursery colonies of Brandt’s bat were found. The roosts were detected at the dead oak trees in an old oak forest at a distance of 142–870 m from each other. Roosts were located in trunk cracks and behind peeling bark at a height of 4–16 m above the ground. Visual inspection during the evening revealed that the maternity colony consisted of 8–10 individuals of Brandt’s bat. In 2016, there was a mixed colony of Brandt’s bat and the soprano pipistrelle (Pipistrellus pygmaeus). This is the first documented record of maternity colonies of Brandt’s bat and the easternmost finding localities of this species in Belarus.
За допомогою радіостеження за двома репродуктивно активними самками нічниці північної протягом 26–28 червня 2016 р. та 14–20 червня 2017 р. в Хойницькому районі Гомельської обл. на території Поліського державного радіаційно-екологічного заповідника виявлено 4 денних сховища даного виду. Вони розташовувалися в сухостійних дубах на висоті 4–16 м у старовіковій розрідженій діброві на відстані 142–870 м один від одного. Візуальним оглядом встановлено, що у 2016 р. колонія налічувала 10 особин нічниці північної та 20–30 особин нетопира пігмея (Pipistrellus pygmaeus), у 2017 р. — 8 особин нічниці північної. Це перші документовані знахідки материнських колоній нічниці північної та найсхідніші з відомих для Білорусі точки реєстрації виду.
|
| issn |
2616-7379 |
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https://nasplib.isofts.kiev.ua/handle/123456789/164392 |
| citation_txt |
Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve / V.C. Dombrovski // Theriologia Ukrainica. — 2018. — Т. 16. — С. 91–94. — Бібліогр.: 18 назв. — англ. |
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2025-11-24T04:53:17Z |
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2025-11-24T04:53:17Z |
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| fulltext |
Theriologia Ukrainica, 16: 91–94 (2018)
http://doi.org/10.15407/pts2018.16.091
UDC 599.4(476:282.247.322:23.07)
MATERNITY COLONIES OF MYOTIS BRANDTII IN THE POLESIE
STATE RADIATION-ECOLOGICAL RESERVE
Valery C. Dombrovski
Polesie State Radioecological Reserve (Khoiniki, Belarus)
Correspondence to: Polesie State Radioecological Reserve; Tereshkovoj St. 7, Khoiniki, 247618 Belarus;
e-mail: valdombr@rambler.ru
Maternity colonies of Myotis brandtii in the Polesie State Radiation-Ecological Reserve. — V. C. Dom-
brovski. — Two lactating females of Brandt’s bat were radio-tracked during 26–28 June 2016 and 14–20
June 2017 in the Polesie State Radiation-Ecological Reserve (Khoiniki district, Gomel region). Four tree
roosts of nursery colonies of Brandt’s bat were found. The roosts were detected at the dead oak trees in an old
oak forest at a distance of 142–870 m from each other. Roosts were located in trunk cracks and behind peel-
ing bark at a height of 4–16 m above the ground. Visual inspection during the evening revealed that the ma-
ternity colony consisted of 8–10 individuals of Brandt’s bat. In 2016, there was a mixed colony of Brandt’s
bat and the soprano pipistrelle (Pipistrellus pygmaeus). This is the first documented record of maternity colo-
nies of Brandt’s bat and the easternmost finding localities of this species in Belarus.
Key words: maternity colony, bats, Myotis brandtii, Polesie, Reserve, Belarus.
Материнські колонії Myotis brandtii в Поліському державному радіаційно-екологічному заповід-
нику. — В. Ч. Домбровський. — За допомогою радіостеження за двома репродуктивно активними
самками нічниці північної протягом 26–28 червня 2016 р. та 14–20 червня 2017 р. в Хойницькому ра-
йоні Гомельської обл. на території Поліського державного радіаційно-екологічного заповідника вияв-
лено 4 денних сховища даного виду. Вони розташовувалися в сухостійних дубах на висоті 4–16 м у
старовіковій розрідженій діброві на відстані 142–870 м один від одного. Візуальним оглядом встанов-
лено, що у 2016 р. колонія налічувала 10 особин нічниці північної та 20–30 особин нетопира пігмея
(Pipistrellus pygmaeus), у 2017 р. — 8 особин нічниці північної. Це перші документовані знахідки ма-
теринських колоній нічниці північної та найсхідніші з відомих для Білорусі точки реєстрації виду.
Ключові слова : материнська колонія, кажани, Myotis brandtii, Полісся, заповідник, Білорусь.
Introduction
Brandt’s bat is a rare bat species of Belarus, registered in the last two editions of the National
Red Book (2004 and 2015). Information on the number and distribution of Brandt’s bat in Belarus is
very scarce. It was believed for a long time that the range of the species is limited to the westernmost
regions of the country (Demyanchik, Demyanchik, 2001). Until the end of the XX century, all avail-
able information on the species was based on A. N. Kurskov’s materials collected in Belovezhskaya
Pushcha (Kamenets district, Brest region and Svisloch district, Grodno region) during 1950–1970
(Kurskov, 1981; Strelkov, 1983). Due to the increase of research activity, the findings of this species
began to appear in other regions of the country as well. In June 2001, one adult male and one female
of Brandt’s bat were caught in the Brest district of the Brest region (Red Book, 2004). In July 2003,
one adult male was caught in the Petrikov district of the Gomel region (Shpak, 2010). In August
2012, five adults (four females and one male) were caught in the Zhitkovichi district of the Gomel
region in the territory of the Pripyatsky National Park (Kusnezh et al., 2012).
In June-July 2015–2016, 12 adult Brandt’s bats, including lactating and pregnant females, were
caught on the territory of Stary Zhaden Reserve (Zhitkovichi district, Gomel region), which con-
firmed the reproduction of the species in the Pripyat Polesie region (Dombrovski et al., 2017). How-
Valery C. Dombrovski
92
ever, by the present time there was not a single documented finding of maternal colonies of Brandt’s
bat in Belarus.
Material and methods
In May-June 2016 and 2017, acoustic surveys of bats were conducted in the Polesie State Ra-
dioecological Reserve (PSRER) (Khoyniki district, Gomel region) by using ultrasonic detectors Bat-
corder 3.1 and Batlogger M (Dombrovski, 2017). Detectors were installed at 38 points, covering the
main vegetation complexes and landscapes of the Reserve. In one of the points, sonograms of a
whiskered bat from the group of cryptic species Myotis brandtii. Myotis mystacinus were obtained.
Identification of these species by echolocation calls is difficult and requires a very large experience
(Barataud, 2015). To establish the species, mist nettings were carried out at the place where the calls
were detected. It was an old, rarely used road, 3–4 meters wide, passing through a large massif of
waterlogged old and middle-aged forests (coordinates 51.7 N 29.9 E). Black alder (Alnus glutinosa)
dominated in the marshy depressions, while oak (Quercus robur) on the dry plots. The catching took
place during 24–25 June 2016 and 13–14 June 2017. In each of the seasons, one breeding female of
M. brandtii was caught (Table 1).
Both females were fitted with LB-2X Transmitters for bats (Holohil Systems Ltd.) and released
in the evening. The transmitters were glued onto the back of the bats between the scapulae using
medical glue BF-6. All animals were in good conditions and flew far away after the release. Roost
search was conducted during 26–28 June 2016 and 15–20 June 2017 using Alinco DJ-X11 receiver
equipped with three elements Yagi antenna.
Species identification
The wing membrane of the caught individuals was attached to the base of the outer toe, which is
characteristic of the group of whiskered bats and distinguishes them from the similarly sized Myotis
daubentonii. The cingulum cusp of the upper third premolar reached or was higher than the height of
the second premolar, which is one of the most reliable criteria for distinguishing M. brandtii from
M. mystacinus sensu stricto (Dietz, von Helversen, 2004). The shape of ears, tragus, hair color and
others features also corresponded to the species-specific characteristics of M. brandtii (Zagorodniuk,
Dykyy, 2009).
Results
In 2016, during a three day long radio tracking of the lactating female, two tree roosts were
found (Table 2). They were located at the edge of an old (more than 100 years) oak forest, sur-
rounded by marshy depressions. Roost 1 was discovered on 26 June 2016 and it was located in the
cracks of a dead oak stump (Table 2). In the lower part of the cracks with a width of about 2 cm,
several specimens of Myotis sp. were found in the day. The same evening a visual and detector re-
cord of bats leaving the roost were conducted. In the roost area, individuals of three species were
detected: Pipistrellus pygmaeus, Plecotus auritus, and M. brandtii. It was noticeable that
P. pygmaeus formed a colony of 20–30 individuals in the uppermost part of the oak stump, and
M. brandtii kept apart in its lower part. The departure of M. brandtii began 8 minutes after sunset
and lasted about half an hour, from 21:30 to 22:01. In total, 10 specimens flew out. After the depar-
ture of adult individuals, a compact group of young bats remained in the depth of the crack.
Table 1. Measurements of Myotis brandtii individuals caught at the PSRER (eastern Belarus) in 2016-2017*
Таблиця 1. Виміри особин Myotis brandtii, зловлених в ПДРЕЗ (східна Білорусь) у 2016–2017 рр.*
Date Age Sex W, g FA, mm 5F, mm 3F, mm Reproductive status
25.06.2016 Ad F 7,7 36,6 46,0 56,0 Lactating
14.06.2017 Ad F 8,85 37,2 46,2 58,4 Pregnant
* W — weight (g), FA — forearm length, 5F, 3F — length of the 5th and 3rd fingers (mm).
Maternity colonies of Myotis brandtii in the Polesie state radiation-ecological reserve
93
93
Table 2. Roost characteristics of two Myotis brandtii individuals, radio tracked at the PSRER (eastern Belarus) in
2016–2017; RN — roost No., DS — distance from the catching site (km), A — age (years), DBH — diameter at
breast level (cm), AHE — above ground height of entrance (m), EX — exposure (° from N)
Таблиця 1. Характеристики сховищ двох особин Myotis brandtii, простежених за радіотреками в ПДРЕЗ (схід-
на Білорусь) у 2016–2017 рр.; RN — номер сховища, DS — відстань від місця лову (км), A — вік (роки),
DBH — діаметр на висоті грудей (см), AHE — висота входу над землею (м), EX = експозиція (° від Пн.)
Tree characteristics Roost characteristics RN DS Tree
species
A DBH other AHE EX type
1 1.0 Oak 80–100 40 dry, broken at height of about 9 m 4 200 trunk cracks
2 1.2 Oak 100–120 75 dry 16 150 behind peeling bark
3 0.4 Oak 80–100 50 dry 15 0 behind peeling bark
4 0.5 Oak 100–120 60 dry 15 350 behind peeling bark
The next day, on the 27 of June, the colony of M. brandtii moved 142 m far from the previous
place and settled in an old dry oak tree behind peeling bark (roost 2). In the evening on the 28 of
June, the colony was still there and ten M. brandtii leaving the roost were recorded at the evening.
The presence of P. pygmaeus was established again in the colony.
In 2017, during six days of radio tracking, from the 15 of June to the 20 of June, two roosts of
the species were found in the same type of forest as in 2016, but 1–1.5 km far (Table 2). The tagged
female spent four days in the roost 3 and two days (on the 16 and 18 of June) in the roost 4. The
distance between these roosts was 870 meters. In the evening on 19 June 2017, the counting of bats
leaving the roost 3 showed the presence of 8 specimens in the colony. The first individual flew out at
21:04, i.e. 17 minutes before sunset, while the last at 21:42. Only M. brandtii were detected. On the
18 and 19 of June, the end of the night activity of the tagged female was registered by radio tracking.
The female disappeared into the roosts at 4:15 and 4:10, respectively, i.e. 30–35 minutes before sun-
rise.
Discussion
Our findings of maternity colonies of Brandt’s bat in Khoiniki district, Gomel region are the
easternmost known record localities within the species’ range in Belarus. Based on our data, it can
be argued that Brandt's bat inhabits the entire territory of the Belarusian Polesie from the western to
its eastern borders. Further east, in the Bryansk region of Russia, Brandt’s bat was also repeatedly
recorded by researchers (Sitnikova et al., 2009; Vlaschenko et al., 2016). To the south of Belarusian
Polesie, on the contrary, this species is extremely rare. In the Ukrainian part of the Chernobyl zone,
Brandt’s bat was caught only once during a very intensive work on inventory of the bat fauna (Gash-
chak et al., 2013). Search and inventory of wintering ranges of bats in the vast plain territory of the
north of Ukraine allowed identifying only two specimens of M. mystacinus (s. l.). M. brandtii
(Godlevska et al., 2016).
The breeding ecology of Brandt’s bat is poorly studied. According to literature data, this is a
typical forest-dwelling species preferring wet habitats (Dietz et al., 2009). Presumably, the availabil-
ity of suitable trees can be a major limiting factor for the maternity colonies (Tillon, Aulagnier,
2014). It is necessary to continue the study on the habitat use and roost selection by Brandt’s bat and
other rare forest-dwelling species in the Pripyat Polesie. This will allow developing specific recom-
mendations on environmentally oriented forestry management in this very specific region.
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