Miscel.lania Zooloqica 22.2 (1999)
21
Ectoparasites on bats
(Gamasida, Ixodida, Diptera)
in Biscay (N lberian peninsula)
E. Imaz, J. R. Aihartza & M. J. Totorika
Imaz, E., Aihartza, J . R. & Totorika, M . J., 1999. Ectoparasites on bats (Gamasida, Ixodida, Diptera) in
Biscay (N lberian peninsula). Misc. Zool., 22.2: 21-30.
Ectoparasites on bats (Gamasida, Ixodida, Diptera) in Biscay (N lberian peninsula).- A study on ectoparasites
infesting Chiroptera in Biscay ( N lberian peninsula) was carried out during a distribution survey of bats.
160 potential hosts were examined and 664 ectoparasites were found, collected manually from living
bats by means of pointed tweezers. The ectoparasites belonged t o 12 species and 2 subspecies:
5 species and 2 subspecies of Gamasida, 2 species of lxodida and 5 species of Diptera. First records in
the study area were obtained for Eyndhovenia euryalis euryalis, Eyndhovenia euryalis oudemansi, Argas
vespertilionisand Penicillidia dufouri. Spinturnix plecotina on Rhinolophus ferrumequinum and Rhinolophus
euryale and lxodes vespertilionis on Myotis nattereri are reported for the first time in the lberian
peninsula; Basilia nattereri is new on Myotis nattereriin Biscay. Associations between parasites and hosts
are also reported.
Key words: Chiroptera, Gamasida, Ixodida, Diptera, N lberian peninsula.
(Rebut: 13 X 98; Acceptació condicional: 2 11 99; Acc. definitiva: 2 1 XII 99)
E. Imaz, J. R. Aihartza & M. J. Totorika, Zoologia eta Animali Zelulen Dinamika Saila, Euskal Herriko
Unibertsitatea, 644 p. k., E 48080, Bilbo, Espana (Spain).
O 1999 Museu de Zoologia
22
Imaz et al.
Introduction
Most papers on bat ectoparasites are descriptive and about most groups little is
known about their world-wide distribution
and biology and/or ecology. The few studies
in the lberian peninsula are fragmentary and
the only records on bat ectoparasites in Biscay were assembled during the 50's and 60's
by Dr. BALCELLS (1968), some of which were
later reexamined by ESTRADA-PErZJA et al. (1988,
1989, 1990, 1991).
This paper shows the results of a survey
carried out in Biscay. Studied groups belong
to the following families of Arthropoda:
Spinturnicidae (Acari, Gamasida), Ixodidae
(Acari, Ixodida), Argasidae (Acari, Ixodida)
and Nycteribiidae (Diptera). Different taxa
found on bats and associations between
parasites and hosts are reported.
Material and methods
During a distribution survey 12 bat species
were examined for ectoparasites. Batflies
(Diptera) were collected from 160 individuals from July 1994 to June 1995. Mites (Acari,
Table 1, Number of examined bats and number of associated ectoparasites. Ectoparasites:
EEE. E. e. euryalis; EEO. E. e. oudemansi; EES. E. e. subspp; SPL. S. plecotína; SMY. S.
myotí; SPS. S. Psi; PRH. rhinolophinus; IVE. /. vespertilionis; AVE. A. vespertilionis; NBI.
N. biarticulata; NSC. N. schmidii; BNA. 13. nana; BNT. B. nattereri; PDU. P dufouri. Hosts:
Rhf. R. ferrumequinum; Rhe. R. euryale; Rhh. R. hipposíderos; Pp. P. pipistrellus; Pn.
P. nathussil; Pk. P. kuhlii; Ms. M. screíbersii; Mm. M. myotis; Me. M. emarginatus; Mn.
M. natteril; Paur. P. auritus; Paus. P. austriacus. Nb. Number of bats examined; Np.
Number of parasites found.
Número de murciélagos estudiados y número de ectoparésitos asociados. (Para las
abreviaturas ver arriba.)
Ectoparasites
Arachnida
Gamasida
Insecta
Ixodida
Diptera
Hosts
Nb
Np
Rhf
24
65
5
30
3
9
0
0
7
4
0
7
0
0
0
0
Rhe
23
44
14
0
2
1
0
0
0
0
0
24
3•
0
0
0
Rhh
50
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Pp
26
20
4
0
0
0
0
0
0
0
20
0
0
0
0
Pn
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Pk
19
11
0
0
0
0
0
0
0
0
11
0
0
0
0
0
Ms
33
273
2
0
0
0
0
251
0
0
0
0
19
0
0
1
Mm
2
34
0
0
0
0
33
0
0
0
0
0
0
0
0
1
Me
5
2
0
0
0
0
0
0
0
0
0
0
0
0
0
2
Mn
4
6
0
0
0
0
0
Q
0
1
0
0
0
3
2
0
EEE EEO EES SPL SMY SPS PRH
IVE AVE NBI NSC BNA BNT PDU
Paur
12
3
0
0
0
3
0
0
0
0
0
0
0
0
0
0
Paus
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Total
160
458
21
30
5
13
33 251
7
5
31
31
22
3
2
4
Miscel.lania Zoologica 22.2 (1999)
Garnasida) and ticks (Acari, Ixodida) were
sampled i n 135 potential hosts frorn January
t o June i n 1995. When more than one b a t
was captured a t t h e sarne t i m e they were
kept in separate bags. Ectoparasites were
collected rnanually frorn living bats by rneans
o f pointed tweezers. Consequently, only the
most conspicuous parasites on f u r and t h e
largest o n t h e patagium were removed. Bats
were t h e n released. Sarnples were stored i n
ethyl acetate and identified under rnicroscope.
Even i f t h e sarnpling rnethod is biased an
equal bias f o r al1 t h e species is accepted.
Thus, w e calculated associations between
parasites and hosts frorn data i n table 1,
excluding b a t species o n which n o parasites
were found, by rnean o f Pi-square rneasure
t o estimate similarity and t h e unweighted
pair-group rnethod (UPGNA) f o r clustering
(No~usis,1993).
House; Mt. ~ i h tunnel
e
Ob. Other buildings.
Localidades donde se
Localitv T v ~ e
Townshi~
UTM
0056
C
Karrantza
VN68
0243
Ch
Atxondo
WN37
0292
Ch
Lernoiz
WPOO
Results
A t o t a l o f 664 ectoparasites were collected,
frorn which 12 species and 2 subspecies
were identified: 5 species and 2 subspecies
o f Gamasida, 2 species o f lxodida and 5
species o f Diptera (table 1). Besides groups
studied here, rnany rnacronyssids (Garnasida,
Macronyssidae) a n d fleas (Siphonaptera,
Ischnopsyllidae) were also collected b u t
have n o t been included i n this work. Inforrnation a b o u t each locality is shown i n
table 2.
Class Arachnida
Order Parasitiforrnes
Suborder Garnasida (= Mesostigrnata)
Family Spinturnicidae
Genus Eyndhovenia Rudnick, 1960
Eyndhovenia euryalis (Canestrini, 1884)
A total o f 56 individuals o f this species was
collected. Five o f thern could not be identified
at subspecies level, d u e t o hard asyrnrnetry on
setae distribution and their poor preservation
status. Three o f them were collected from one
Rhinolophus ferrumequinum (Schreber. 1774)
i n cave No 0028, where colonies o f R.
lmaz et al.
ferrumequinum, Rhinolophus euryale Blasius,
1853, Miniopterus schreibersii (Kuhl, 1817)
and Myotis emarginatus (E. Geoffroy, 1806)
can be found. Two more were found on R.
euryale i n roost No 0006; this roost is used by
small breeding colonies o f R. ferrumequinum
and M. emarginatus, b u t R. euryale is only an
occasional visitor.
Eyndhovenia euryalis euryalis (Canestrini, 1884)
This subspecies is recorded for the first time
in Biscay, where 21 individuals were found.
R. euryale seems t o be its main host (see
table l), even though al1 the individuals carrying this parasite were caught i n t h e same
temporary colony, i n cave No 0004, which is
also used by R. ferrumequinum, M. schreibersii
and M. emarginatus. I t was also collected
f r o m R. ferrumequinum in cave No 0028, and
f r o m M. schreibersii i n cave No 0031, where
this species forms temporary groups.
Eyndhovenia euryalis oudemansi (Eyndhoven,
1941)
This species is reported on R. ferrumequinum,
o n which it was f o u n d i n 30% o f checked
individuals. Recorded f o r the first t i m e i n
Biscay, where i t shows a high specificity f o r
this bat species (table 1). Found in t h e attic
o f church No 0266, i n cave No 0028 and i n a
small breeding colony i n farm house No0006.
Genus Spinturnix Von Heyden, 1826
Spinturnix plecotina Koch, 1839
This species was collected on Plecotus auritus
(Linnaeus, 1758) i n churches No 0243 and
0326, and o n R. ferrumequinum i n church
No0266, and from R. euryale in cave No 0004.
Horseshoe bats are new hosts i n t h e lberian
peninsula.
Spinturnix m y o t i Kolenati, 1856
The m y o t i species group i s conflictive within
t h e Spinturnix genera (UCHIKAWA
et al., 1994).
The species was identified according t o t h e
description given b y UCHIKAWAet al. (1994)
f o r S. myoti.
Although sorne other mouse-eared bats
(genus Myotis) were exarnined, it was only
f o u n d occurring on one Myotis myotis
(Borkhausen, 1797).
Spinturnix psi Kolenati, 1856
A total of 251 individuals were collected, al1
occurring on Miniopterus schreibersii. A l l
hosts were caught from t w o ternporary colonies in caves No 0004 and 0031.
Genus Paraperiglischrus Rudnick, 1960
Paraperiglischrus rhinolophinus Koch, 1841
It is recorded f o r t h e first t i m e i n Biscay.
Seven specimens were collected, al1 from a
single sample o f the 44 R. ferrumequinum
host species checked. I t was f o u n d i n an o l d
farm house, No0006, where srnall colonies o f
R. ferrumequinum and M. emarginatus breed.
Suborder lxodida (= Metastigmata)
Family lxodidae
Genus lxodes Latreille
lxodes (Eschatocephalus) vespertilionis Koch,
1844
This parasite was found occurring on R.
ferrumequinum a n d Myotis nattereri (Kuhl,
1817). The latter is recorded for the first time
in t h e lberian peninsula. All these records
were obtained from hosts caught in underground roosts: caves No0295,0297 and 0028,
and mine tunnel No 0055.
Family Argasidae
Genus Argas Latreille, 1796
Argas (Carios) vespertilionis (Latreille, 1802)
These parasites w e r e c o l l e c t e d f r o r n
Pipistrellus pipistrellus (Schreber, 1774) and
Pipistrellus k u h l i i (Kuhl, 1819). Hosts were
caught b o t h i n roosts and f o r a g i n g sites,
localities No 0234, 0288, 0292, 0340 a n d
0336 f o r P. pipistrellus, and No 0090 a n d
0358 f o r P. kuhlii.
Miscel.lania Zoologica 22.2 (1 999)
25
Class lnsecta (= Hexapoda)
Order Diptera
Farnily Nycteribiidae
caught in caves 0004 and 0051, and the latter
in buildings number 0006 and 0071.
Genus Nycteribia Latreille, 1796
Affinities between species
Nycteribia biarticulata Herrnann, 1804
Figure 1 shows t h e affinities between parasite species depending o n host species.
A preliminary view enables identification of
a large block o f parasites which includes the
first seven taxa arranged in the cluster. The
first group is forrned by Eyndhovenia euryalis
oudemansi and Paraperiglischrus rhinolophinus,
w i t h high affinity, followed by Spinturnix
plecotina and lxodes vespertilionic. The second group in this big block is formed by
Eyndhovenia euryalis euryalis, Nycteribia
biarticulata and Eyndhovenia euryalis subspp.
Rernaining parasite taxa d o n o t seern t o
be so clearly inter-related further than at level
o f small groups. Thus, Basilia nana and Basilia
nattereri appeared very close. Nycteribia
schmidli is also linked t o Spinturnix psi b u t
t h e affinity is lower. Finally, Spinturnix m y o t i
and Penicillidia dufouri are n o t clearly included i n any group, and Argas vespertilionis
appears notably alone.
Figure 2 shows association between host
species depending o n their parasites. Affinity is low except f o r P. pipistrellus and P.
kuhlii. The second group is constituted by R.
ferrumequinum, P. auritus and R. euryale,
and t h e t h i r d by M. myotis, M. emarginatus
and M. schreibersii w i t h lower affinity. Finally, M. nattereri appears alone.
They had been collected occurring on R.
ferrumequinum and R. euryale. For the forrner
host species, this parasite was found i n
6 roosts, four caves and t w o breeding places
in houses, localities No 0006, 0028, 0066, 0272,
0295, and 0297. I t was also collected from R.
euryale i n t h r e e caves and one house,
No 0004,0006,0056 and 0066.
Nycteribia (Listropodia) schmidli Scheiner, 1853
Almost al1 o f thern were collected from M.
schreibersi. Three specirnens found occurring
o n one R. euryale can n o t be considered as
valid data, as this bat was n o t isolated after
capture, b u t was i n contact w i t h other
Schreiber bats. Thus it can be considered as
a casual parasitisrn. M. schreibersii bearing
this species were caught i n three temporary
roost caves, No 0004, 0028 and 0031. The
specimen o f R. euryale was taken i n cave
N00066, which is also used as a temporary
roost by M. schreibersii.
Genus Basilia Ribeiro, 1903
Basilia nana Theodor & Moscona, 1954
These parasites were collected on M. nattereri
i n t w o artificial underground sites, No 0055
and 0073. used as occasional roosts.
Basilia nattereri Kolenati, 1857
Collected frorn M. nattereri, this is a new
host f o r this batfly i n t h e Biscay locality No
0055.
Genus Penicillidia Kolenati. 1863
Penicillidia d u f o u r i Westwood, 1835
Collected on M. schreibersii, M. myotisand M.
emarginatus. The forrner two host species were
Discussion
These data confirm t h e presence o f five species and t w o subspecies o f Garnrnasids i n
Biscay, o f which one species and one subspecies are recorded for the first time. Arnong
thern, Eyndhovenia euryalis is a typical parasite o f horseshoe bats (genus Rhinolophus)
i n Europe, i n which three subspecies have
been described according t o different rneasurernents f o r different forrns and rnorphological aspects related w i t h t h e idiosoma,
dorsal shield, seta, peritrerna, tritosternum,
sternal shield, and legs (UCHIKAWA
& DUSBABEK,
1978): E. euryalis euryalis, E. euryalis
oudemansi, and E. euryalis cornuti. Only the
first t w o were found i n this work. Regarding
26
lrnaz et al.
O
5
10
15
Label+---------+----------+--I------.+-----.---+-.---.---
EEO
PRH
IVE
SPL
EEE
NBI
EES
20
+
25
I
AVE
the first, our data agree w i t h previous works
(Schreber, 1774), Eptesicus nilssonii (Keyserling
stating horseshoe bats are t h e usual host o f
et Blasius, 1839), Nyctalus noctula (Schreber,
E. euryalis euryalis i n other countries o f Eu1774), Myotis nattereri, Myotis mystacinus
rope and t h e lberian peninsula, where it
(Kuhl, 1817), Myotis b r a n d t i i (Eversrnann,
also occurs o n M. schreibersii (DEUNFF,
1977;
1845) and Myotis daubentonii (Kuhl, 1817)
& DUSBABEK,
1978; PERIBANEZ-L~PEZ
et
UCHIKAWA
(DEUNFF,1977; ESTRADA-PENA
e t al., 1989;
al., 1989). However, E. euryalis oudernansi
STANJUKOVICH, 1990). Furthermore, Spinturnix
was f o u n d only o n R. ferrurnequinurn. This
rnyoti was previously found i n al1 checked
also agrees w i t h other authors'data f o r EuMyotis species i n t h e lberian peninsula
rope and t h e lberian peninsula (UCHIKAWA&
(ESTRADA-PENA
et al., 1991). as well as i n genDUSBABEK,
1978; PEREIRA,
1989; ESTRADA-PENA
et
era Barbastella, Eptesicus, Vespertilio,
al., 1991), and it differs considerably frorn
Plecotus, Rhinolophus and Pipictrellus i n
t h e North African pattern, where E. e.
other European areas (DEUNFF,1977; STANJUoudernansi was also reported o n R. mehelyi
KOVICH, 1990). Lastly, Spinturnix psi, appears
specific for M. schreiberssi, and even india n d R. euryale (ESTRADA-PENA
et al., 1991).
Three species o f genus Spinturnix were
v i d u a l ~of R. euryale caught i n t h e same
confirmed i n Biscay S. plecotina, S. rnyoti and
roosts were free o f it. This agrees w i t h data
S. psi, whose presence was unclear f r o m t h e
from other authors i n Europe (RUDNICK,1960;
bibliography available (ESTRADA-PENA
et al.,
BERON,1971; DEUNFF,
1977; ESTRADA-PENA
et al.,
1989; ESTRADA-PE~A
et al., 1991; CORDERO
DEL
1989, 1991; PERIBANEZ-LÓPEZ
e t al., 1993), and
C A M P I L L al.,
O ~ ~1994). On the first hand, horsealthough this parasite has been found o n
shoe bats are new hosts f o r S. plecotina i n
Pipistrellus, Rhinolophus and Myotis bat spet h e lberian peninsula. P. auritus is its rnost
cies, these cases were considered occasional
usual host i n Europe, although it occurs on
contarnination (DEUNFF,
1977).
R. ferrurnequinurn, Eptesicus serotinus
The last garnrnasid, Paraperiglischrus
Miscel.lania Zoologica 22.2 (1999)
Rf
Paur
Re
Mn
rhinolophinus, which was f o u n d only o n R.
ferrumequinum during this work, has been
reported showing high specificity as a parasite o f other horseshoe bats (DEUNFF,
1977;
ESTRADA-PENA
et al., 1989; CORDERO
DEL CAMPILLO
et al., 1994). Some lack o f observations about
this species could happen due t o t h e more
inexhaustive examination methods o f lateral and w i n g membranes. lndividuals o f
this species, mainly females and nymphs, prefer t o be o n t a i l membranes (DEUNFF&
BEAUCOURNU,
1981).
Among Ixod ida, lxodes (Escha tocephalus)
vespertilionis was reported previously occurring o n R. ferrumequinum and P. auritus i n
DEL
Biscay (ESTRADA-PENA
et al., 1989; CORDERO
CAMPILLO
et al., 1994), where it does n o t seem
t o be an abundant species. R. ferrumequinum
has been considered its main host in Europe,
b u t it has been detected o n several bat species, showing high infestation level in some
cases (ARTHUR,
1963; BEAUCOURNU,
1967; HUTSON,
DEL
1971; ESTRADA-PENA
et al., 1989; CORDERO
CAMPILLO
e t al., 1994). Although it had also
been considered as a " w i n t e r species"
(BEAUCOURNU,
1967) only five individuals were
collected f r o m February t o June. No lxodes
simples Neumann, 1906, was recorded. This
parasite is widespread in Central and Eastern
27
I
Europe o n M. schreibersii b u t is rare in t h e
lberian peninsula (ARTHUR,
1956; BEAUCOURNU,
1967; ESTRADA-PENA
et al., 1991).Argas (Carios)
vespertilionis, recorded f o r t h e first time i n
Biscay, is a widely distributed species (Europe, Asia a n d Africa), w h i c h prefers
pipistrelle bats b u t can occur on al1 bat species except on horseshoe bats (BEAUCOURNU,
1961; CORDERO
DEL CAMPILLO
e t al., 1994;
DUSBABEK & ROSICKY,1976). I t can also occur
o n people i n human buildings when n o bat
1933; HOOSTRAAL,
host is present (COLAS-BELCOUR,
1956).
Concering batflies, t h e occurrence o f
Nycteribia biarticulata o n R. ferrumequinum
and R. euryale agrees w i t h data f r o m other
countries, where this insect was also reported
on other horseshoe bats, b u t mainly on these
t w o species (THEODOR& MOSCONA,1954;
BALCELLS,
1968; KRISTOFIK,1982; ESTRADA-PENA
et
al., 1991; CORDERO
DEL CAMPILLO
et al., 1984). In
the same way, the high amount o f Nycteribia
schmidli found over M. schreibersii agrees
w i t h t h e general view t h a t considers this
batfly as a typical constituent o f this bat
parasite fauna, even i f occasionally small
numbers are found on other species (THEODOR
& MOSCONA,
1954; KRISTOFIK,
1982; ESTRADA-PENA
et al., 1991).
28
The first record of Basilia nana in Biscay
and its occurrence on M. nattereri, agrees
with previous knowledge about this parasite
in the lberian peninsula, where this bat species is its main host. It has also been recorded occurring on Myotis bechsteini
(Bechstein's bat), Myotis dasycneme (pond
bat), Myotis blythi (lesser mouse-eared bat),
Myotis myotis, Myotis emarginatus(Geoffroy's
bat), R. ferrumequinum, P auritus as well as
on M. schreibersii (THEODOR & MOSCONA, 1954;
HUTSON, 1984). BEAUCOURNU (1961) noted M.
bechsteini as its main host in Western France.
On the other hand, the occurrence of Basilia
nattereritogether with B. nana on the same
individual of M. nattereri shows an intermediate position between previous northern
and southern records. In fact, M. nattereri is
a common host of Basilia nattereri in Central
Europe where it also infests other small Myotis
bats and E. serotinus but on the lberian
peninsula this bat is usually parasited by
Basilia nana (ESTRADA-PENA et al., 1991).
The last species, Penicillidia dufouri, is recorded first on M. emarginatus in the lberian
peninsula. It seems to be a nonspecific parasite,
since it was previously recorded mainly on M.
myotis and M. blythii, but also on other several
species such as M. nattereri, Myotis capaccini, R.
mehelyi, R. euryale, R. ferrumequinum, E.
serotinus and M. schreibersii (FALCOZ, 1923;
BALCELLS, 1968; KRISTOFIK, 1982; ESTRADA-PENA et al.,
1991; CORDERO DEL CAMPILLO et al., 1994).
It is difficult to draw conclusions concerning the affinities between the parasite species and host species shown in figures 1 and
2 as there is an insufficient quantity of data
available for many parasite and host species.
In figure 1, the large block formed by the
first seven taxa is related to parasites of horseshoe bats (genus Rhinolophus), though
Spinturnix plecotina is known as parasite on
several bat species, and its occurence in this
group can be an artifact (DEUNFF, 1977;
ESTRADA-PENA et al., 1989; STANJUKOVICH, 1990).
The highest affinity between Eyndhovenia
euryalis oudemansi and Paraperiglischrus
rhinolophinus reflects that they were recorded only on R. ferrumequinum, but only
the former has a high specifity for this host,
while the latter is a typical parasite of horseshoe bats (DEUNFF, 1977; ESTRADA-PENA et al.,
1989; CORDERO DEL CAMPILLO et al., 1994). The
same can be argued for Eyndhovenia euryalis
Imaz et al.
euryalis and Nycteribia biarticulata, which
following our data can be identified as the
parasite group of R. euryale, though they
are also found also in other rhinolophids in
Europe (THEODOR & MOSCONA, 1954; BALCELLS,
1968; DEUNFF, 1977; UCHIKAWA & DUSBABEK, 1978;
KRISTOFIK, 1982; CORDERO DEL CAMPILLO et al.,
1984; PERIBANEZ-LOPEZ et al., 1989; ESTRADA-PENA
et al., 1991).
About the remainder, the only consistent
group is formed by Nycteribia schmidli and
Spinturnix psi, which are considered as the
typical parasite fauna of M. schreibersii (THEODOR
& MOSCONA, 1954; KRISTOFIK, 1982; ESTRADA-PENA
et al., 1991). The higher affinity of Basilia nana
and Basilia nattereri is explained by the scarcity of data. Even if they have only been found
on M. nattereri during this work, they are
known to occur on several bat species in Europe (THEODOR & MOSCONA, 1954; HUTSON, 1984;
BEAUCOURNU, 1961). The same occurs with
Spinturnix myoti and Penicillidia dufouri, which
are not clearly included in any group. And the
last case, Argas vespertilionis, which in this
work was found only on Pipistrellus, can also
be found on other vespertilionids but it shows
preference for this bat genus (BEAUCOURNU,
1961; CORDERO DEL CAMPILLO et al., 1994; DUSBABEK
& ROSICKY, 1976).
About the affinities between host species, the first group formed by P. pipistrellus
and P. kuhlii and the high affinity it shows
is a consequence of the ixodid Argas
vespertilionis, which has a documented preference for this host genus (BEAUCOURNU, 1961;
CORDERO DEL CAMPILLO et al., 1994; DUSBABEK &
ROSICKY, 1976). The second group includes M.
myotis, M. emarginatus and M. schreibersii,
but it could be the consequence of data
scarcity, specially about the first two bat
species. In fact, the parasite species that can
explain this grouping in our data is P.
dufouri, and many host species have been
recorded for it in previous works. Moreover,
despite occasional cases, M. schreibersii has
an own parasite fauna, including species
such as S. psi and N. schmidli. Thus, we can
suppose that more data about ectoparasites
of M. myotis and M. emarginatus would
change this grouping. The third group,
formed by R. ferrumequinum, P. auritus and
R. euryale, to be more clear, being a consequence of typical parasites of horseshoe bats
such as N. biarticulata, E. euryalis euryalis,
Miscel.lania Zooloqica 22.2 (1999)
a n d S. plecotina, which i s t h e link between
rhinolophids and P. auritus. Finally, t h e seclusion o f M. nattereri must be explained i n
t h e same way as f o r t h e other Myotis species, as a consequence o f t h e scarcity o f
data, and more information is needed bef o r e a clear view about t h e i r a f f i n i t y patt e r n is obtained.
biarticulata, N. schmidli, Basilia nana, B.
nattereri observado por primera vez sobre
M. nattereri en Bizkaia, y Penicillidia dufouri
primera cita en Bizkaia. También se comenta
la afinidad entre especies de parásitos
dependiendo de las especies de murciélagos
que infestan (fig. 1) y la afinidad entre
especies de murciélagos dependiendo de las
especies de parásitos que soportan (fig. 2).
Acknowledgements
References
We would like t o thank E. Bernedo, G. Razkin
and R. Agirrebeña f o r their help in the
surveys. Special thanks t o J. C. Iturrondobeitia,
A. l. Caballero and C. Andrés for their teaching and advice on acarology, and t o Dr. A.
M. Hutson and Dr. R. L. C. Pilgrim for their
help i n obtaining references.
Resumen
Ectoparásitos d e q u i r ó p t e r o s en Bizcaya
(N península ibérica)
Durante u n estudio de distribución de
murciélagos se ha desarrollado un estudio sobre
ectoparásitos de quirópteros en Bizkaia (N
penísula ibérica). Se han examinado 160
hospedadores potenciales hallándose 664
parásitos. Estos fueron recogidos manualmente
sobre murciélagos vivos mediante pinzas
afiladas, y conservados en acetato de etilo
para su posterior análisis microscópico. Una
vez recogidas las muestras los murciélagos
fueron puestos nuevamente en libertad. Los
ectoparásitos recogidos pertenecen a 12
especies y 2 subespecies (tabla 1) (se han
excluido de este trabajo los macronisidos e
ischnpsillidos recogidos). Entre los gamásidos
se han capturado Eyndhovenia euryalis euryalis
y Eyndhovenia euryalis oudemansi, los cuales
constituyen primeras citas para el área de
estudio, Spinturnixplecotina citado por primera
vez sobre Rhinolophus ferrumequinum y
Rhinolophus euryale en la península Ibérica, y
sobre Plecotus auritus en Bizkaia, S. myoti, S.
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