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Plecotus et al. 8 (2005): 3-7 __________________________________________________________________________________

599.426 (478.9)

Eptesicus serotinus (Schreber, 1774) (, )
..
. 2003/2004 . 207 . 60-70- . 14 68 (20.6%). 10 24 , 69.5% . : , , , .

. , (, 1997). (, 1961; 1975; , 1997). . . 50-70- , 90- . Eptesicus serotinus: .


. 3.5 . 68. ­ 1 0.4 3.5в5.5 . 5 . 2 : . 0.8 2.5 . . , . , . 2.5


4 5 , 3 10 . , , 2.5-4 80, 10-15 (, 1997). 22 . , . 100 +7єC 97%, . , , ( . 1979). , .


4 2003 2004- . 150 . . . , . "" . , , . , . . .


207 . 2-4 . . 14 68 (20.6%). . 2 , 10 24 ­ 69.5% . : 25-34 6.3% , 34 ­ (. 1). , , . . , , , , (, ), .


Plecotus et al. 8 (2005)
%
30

5

24,6
25

21,7 15

23,2

20

15

10

8,2 3,4 2,9

5

1 M >35

0

0-4

5-9

10-14

15-19

20-24

25-29

30-34

. 1. (%), .
Fig. 1. Number of specimens (%) found at different distances from the entrance of the mines.

: ­3єC +4єC. +8єC. , . , 2-3.5єC 87 , 5-6є ­ 45 , 8є ­ 10 . , , . , .
700 600 500 400 300 200 100 0 1962 1963 1964 1965 1970 1973 1974 1996 2004 0 3 150 207 N 650 500 400 500 400

. 2. . .
Fig. 2. The number of serotine bats in mines of Bychok in different years.


6 , , . 2. , ( 3.2 ), , . , , , . , - , . , . , E. serotinus.


.. .. , .. , .. .. .


.., .. 1961. ( ). ­ .: . , : 25-32. .., .., .., .. 1979. . . , , 187 . .., .. 1997. (Chiroptera, Mammalia) . . ­ .: . .. (1857-1941). , : 100-103. .. 1975. . ­ .: . , : 82-95.

S

UMMARY

Bondarenko A.M. 2005. The spatial distribution and number of serotine bats Eptesicus serotinus (Schreber, 1774) in mines of village Bychok (Moldova, Transdniester Region). ­ Plecotus et al. 8: 3-7. The investigated mines are situated in the village Bychok on the left bank of the Dniester River, for a distance of 3.5 km, and represent the largest artificial underground complex of Moldova. The mines were abandoned only at the end of 1990s. We undertaken four visits to those mines in winter 2003/2004, to evaluate number and spatial distribution of serotine bats hibernating there. The animals were marked with paper labels. In addition, we registered the air temperature and humidity inside the passages. In total, we found 207 specimens of E serotinus in 14 mines out of 68 existing ones (20.6%). The animals preferred to occupy holes in walls and ceilings. The most of specimens (69.5%) were recorded in the interval from 10 to 24 m from the entrances (Fig. 1), though in those parts of the mines the temperature was instable (from ­3є to +4єC) and lower, than in the deeper parts (about 8єC). Surprisingly, number of serotine bats censused in 1996 and 2004 in already abandoned mines proved to be lower than number of this species observed in period of 1960-1970s, during intensive exploitation of the mines (Fig. 2). This can be explained by the fact that earlier investigators did not mark the animals and could count them repeatedly while they


Plecotus et al. 8 (2005)

7

were moving between the mines. Therefore, the dynamics of serotine bat number presented in Fig. 2 may be far from reality. However, in any case the Bychok mines remain the largest hibernation quarter of E. serotinus in Moldova. K e y w o r d s : serotine bat, winter period, mines, Moldova. : . , 308, . 33, 3300, E-mail: artembat@mail.ru
Author's address: Artem M. BONDARENKO ul. Karla Libknekhta 308, kv. 33. Tiraspol 3300, Moldova E-mail: artembat@mail.ru