ECTOPARASITES OF WILD RODENTS FROM PARQUE

ECTOPARASITES OF WILD RODENTS FROM PARQUE

ECTOPARASITES OF WILD RODENTS FROM PARQUE ESTADUAL
DA CANTAREIRA (PEDRAGRANDE NUCLEI), SAO PAULO, BRAZIL
PEWDA
A. NIE-IDARCI
mwmosmmFsnl
R D R O W. LIYARDI' HARCOS AWAKI ' ARLFI MARCILI' SANDRA I?.
FAVORlTOf RICARDO PINTO-DA-ROCHA'
~sTRACT:-NERI-BASTO$FA; BARROS-BATIEsTI,DM.; LJNARDI, P.M.; AMARU, M.; MARCILLA,;
FAVORIW, S.E; PWDA-ROCHA,R EdqmasbofwW m d m t r h o m h r q u e ~ m I d a C ~ ( P e d r s
Crande NocIeii SIoPaoIo, BraiL [Fmpamsitosde roedora silvesm do Paque Estadual daCantareira (NCclw
Pedra Gtande), SBo h l o , Bmil.] RevLvra Bmsileira de Pomsitologa Vefern&iu, v. 13, n. 1, p. 29-35, 2004.
LaboratQio de Parasitologia lnstituto Bumrao, Av. Vital Bmil 1500, S k Pauly SP 05503.900, Brazil. E-mail:
[email protected]
SixteRlectopvasitey~cieswencolld6mm195wildrodentg~Febtuary2000and
January2001, in
an Ecological Reserve area of the Parque Estaduat da Cantareira, in the d c i p d i t i e s of Caieims, M a r i e and
Gumlhos. State of S k Paulo, Brazil. Fitly three percent of the captlwd rodents were f w d iafktd. with the
highest prwalmces obsenrsd for the mites Gigantol~elape@ l m i and G. oudmmnvi on 9 rrmalur; G.
wo/@whni,L u l e ~ p o u I i s t a n e n and
~ i ~~ . w l a e l a p spmvicpinasuc on O l i w m y s sp. lo relation to the fleas,
Polvgtnis (Neqwivgmis) atopus presented the highest prevalence, infesting -mys
rue.wtus. The highest
specificityindices were f a d for Euhra~h~vIaeIaps
rotrm&~/AMnsp.;G. gilmoreiand G.ademami/O. russams;
and LoeIaps novadJu/iomyspicIipe~.When average infestation intensitiff were related to spffificity indices, the
relationshipwas mly significant forB~cepofler~~oniur
sp. and 0 . russafll~(Pa.05). C r ~ . ? v I I mi-minm
a
and Polvgenis (N.) pmdoi were found for the fimt time on Blc7rimmys brevicepx as well as A. fahmrhoki, E.
rotundus, G. wo/~whni.M pwvicpim,m, C.miand P atopa~on Bruceponemnins sp.;and AndroIwlap~
fahmholzi, E. m&v,
G.gilmorei, G. ourk.nwn~i.lmdesIoricatus, L. n r v a ~ iL.
, pouli~mmsis.M pmvispinost~~
and P o t o p ~onJ.
s
pictipa. In addition, a new lofality m r d is psented f a L. n m i .
KEY WORDS:F A o p m i imites, fleas,wild d e n t s .
D e ~ ~ e s d e e c m p a m i t o s f o r a m e o l ~ s o b195
re
roedorgenm F-b&
2 m e J m e b d e 2001, noparque
Caieirsr, MaitiporH e GlraruthDs. Estado de Sio Paulo. Bmil.
e Ub par cent0 dos
infestado&e as maiora prevalhcias foram obsesvadas para
..
4..
Lahmhi&de
btikm BUI..g
v*
l-%Xt
MMEsm, s a P&,
SP. BT.dl. E-mri1: f r r m d a ~ . n r . . h .
'Depwmmo & Prnildogi., Lshamthio & TlipamromatMeor,
ci-k B~O(ten), univaumde de sao paulo (USP).
Paulo, SP. Bmil.
-'
& mdogL,
C
iB
'
*
&
Vnivenidadc Fcdcnl &Mhps Gem% Belo Hahaute, MO,&a.
CNPq
FeUowskop
& M & ~ P v m f i p r c r d v a e s&ie A&
USP, Sio hula,
ma], FRuld.6e de Mcdicim %widria e
*
SP. Brazil.
' 0 & Biodiverrid.d+ U n i k s
3 Pulo, SP (Brazil).
nSEr
de zootogia, laatituto de n i n c i M o q usp,
P d o , SP, Braril.
0ligori;romys sp. Em relaqio as pulgas, Polygenis
~ e o p o l ~ ~slap
i c ) foi a mais ppevalente, idstando 0.
mssahrs. 0 s m a i m indices de espgificidade foram para
Euhrochylaelops mhrndt~.~IAkodm
sp., G. gilmwei e G.
m&i/
0.
e h I q s nmnci/JuIiomyspictipa. A
intemidade &a de infesla@o&relwionada ao indice de
especificidade, e somente foi sigoificante para
Brucepnmwnirnsp. e 0 . ~ & K O . O 5 ) . U m n m r e g i s l m
de localidade foi assinalado para L. nmari, e as seguintes
e s e i e s , ~ m n m p . y ~ minewa
la
minema e Polvgenis (N.)
pr&faam ~ w d s pela
s primeira ve em B l m i n o ~ . ~
Rev. B r a Rraitd. Vet.. 13.1.2935
(Waza. J. vet -.)
(2ooo
. .
30
Nm-bsm et al.
breviceps; tanto quanto A. fnhmnholzi, E. mtundus, G.
wol@ohni, h4 pawiicpbmm~,C. minervvr e tl o t p em
Bnrcepattersonius sp.; e A. fahrenholzi, E. m h d u s , G.
gilmorei, G.orrdemmsi, Ixoder loricahrr, L. m i , L.
parli~iunemis,h4 pvipimw e I! a i q n ~ cem J. pictips.
and Guarulhos. It includes five V e n a t i v e nuclei (Pedra
G d e ,~ g u a s ~ h E
m,I, ,
~inheirinhoand~abu~),
of which we used Pedra Grande to conduct the present study.
Rodents were captured between February 2000 and
Jarmary200l.with IM'live-mp"cagesand 1 6 0 " p i t f a l I ~ "
during nine consecutive days each month totalling 33.480
Qapprng eftkt The captured rodenh wereanesthetized with
ether and combed over a white basi The ectoparasites were
collectedby brushing. After pxrmiw in7O?&ehol, they
were mounted on slides according to the conventional
Mammals are considcrcd prefamtial lmm for several
t
a
m for Acari (FLECHT?&NX, 1985)andS
i
species of ectoparasites and, of these, Rodentia is the most
(UYARDI;~$~OOO).
infested (WOOLEI', 1988). Accading to Botelho and L d
Mites were identified using the original dexxiptions of
(19%~thisgsoup~bec~Bedooeofthemostimportimt Fwseca (1935136, 1939). as well as by comparison of the
ordenof mmmalsduetothefktdx& pMonaniQny,itinc1udes
material with the types deposited in the Jnaituto Bumtan
&largest mberofspecies, many ofwhich play an importaot
Acari collection. Nomenclature follows that updated by
epidemiological mle. As reservoirs aud intermedim hosts of
Botelhoetal. (2002). Immahlre tick specimenswere identified
disease causing agents on wild life, domestic animal and
based oncanpaison with the chaetotaxy of labwatoryreared
~ U - I S P ~ U M A R A E S ~2001).
~~~.,
larvae material. Nomenclatureand idenhficatimof Reas follow
Ectoparasites that cmvcl~llyinfest smtU wildmammals
L i andGuimar%es(2CW).
are included mostly in the Ixodida (IxodidaeandW d a e )
and Gaumida (LaelapidaeandManonyssidae) goups, in the
D.hAcari subclass and Siphonaptera (Rhopalopsyllidae) and
The prevalence of boats infested by Acari and SiphoPhthiraptefa (Amblycera, Ischwcem and Hoplopleuridae)in
nap&ra. w a s e q n e s d in percentageof the number of infested
hecta c l m
hosts out of all examined hosts.
Studies dealing with mdent eaoparanites and theii ham
Specificity indices w e calculated for each host species
relationship in Brazil stmd out during the 80's and 90S,with
that presmted more than 10 captured specimens, a a w d i g
severdpapersmainlyI i u n t h e ~ o ~ to Marshall
~ ~ (1981
O ),using the formula:
et al, 1981; LINARDI, e-tal, 1984%LINARDL et al, 1984b;
-Lad,
1985aLINAFSJI,etal, I%%,LINARDI~c~,
1987; LOPES e~ al., 1989, BOTELHO; LNARDI, 1996).Other
studis were also conducted in the sfam of Rio de Janeiro
(GUTTON&& l986),R~1aima(lJNARDIaaI.,
1991a),bta
whne r. is the number of parasites per individual of a given
C-(LNARDI
1 9 9 1 b ) d -(BARROSe-tal.,
host
(-tal
by
i). Note that in the
1993; BARROS-BATIESTI et al., 1998). R
e to the
dewminator, the valws of r, calculated for each host species
eeolwandhost
Laebine
are added up for all species, and that the multiplication by a
m conducted in the Atlantic Forest aw frw IIha Giande,
factor I00 implies that SIwill vary between0 and 100.
sateof Ria & J - ~ Y
M d ~ ~ m e t(2002).
A . A l W
A linear regression analysis was used to verify the
sewal species of mites were desmbed &om the state of S&
relatimhip
between specificity indices (SO and infstation
m b y ~-(1935/36,
193911here isonly me-tm
mean
intensily
(MI) in the observed horn.A l i i m o d e l was
f r w t h e w E c d ~ ~ l i t - I ~ ( B o s S I et4 2002,, in
considaed,
given
by Y = a + h X where qiesats the mean
the coast of S h Paula, thardexk with the relationships among
intensity,Xthe
specificity
idex, andoand 6 are,~espactively.
ec+tes
and rodents.
the
linearand
angular
fitting
coefficients.
As such, the purpose of the present study was to
In
addition,
the
adjusted
determination coefficient was
investigate the e a q a m i t e fauna from wild mdeats of the
estinwed.
T
h
i
s
coefficient
mesnuff the "goodnss of fit" o f a
Paqw Esadual da Cantareira, S o Palo, Slateof SW W o ,
givenree~ssionmodel (ZAR 1996), andcan be interpreted=
in an area that -prism
the largest s-h
ofwwdland in
an expressionof the pporrionofthe t o t a l ~ ' l i t y o b s e r v e d
insular conditions within ametropolis.
in Ythat cm beexplaid by or*to a lineardependence
of Y on all observed X-valua in the fitted re-m
model.
Whm the aneular coefficient is sienificantlv differmt fiwn 0.
StodyaamdRLtpmceden
given the P-value < 0.05, we can say thar there is a linear
TheParpueEsfdual da Canmeira(235L2'Sand46036'W)
relationshiptetweenXandY(CHASE: BOWN, 19921
coasituks a woodland reserve of 7.916.52 ha l o a t d in the
Ectoparasite specimens were deposited in the Acari
northern part of the city of S%oPaulo, surpassing the
collection of the lnstituto Butantan (IBSP) and iu the Museu
municipality limitsand inchding -of
C a i e k Mairipm3
& Zoologiada Universidade de SZio Paulo (MZSP). Rodents'
~~~~~
~~~
~-~
~
m.Bras PaariM. Vet. 13. 1.29-35 (2ooo
(Bma. J. vet Pxasibl.)
~~
-
skias a l i d W I s ~ ~ i n t h e ~ I b g y m 1 1 e c tcmlm5
i ~ Fonseea, 1959; L. nu~vasiFtinseeq 1939; L.
of the MZSP.
jmulistanensis Fonseca, 1936; L. thori Fonseca, 1939;
~ l a e I a p hs d ~ h u Fooseca,
v
1959 and fisolaelops
RE5mls
~ i n o s s rFoaseca,
s
1936. S-i
Srephanecircidae
Duringlhetwelvemcmthperiod,atotalof833~ts - Craneop.vyl1a minerva minerva (Rothschild, 1903);
were collected on 104rodents, totalling 53%of infated h m s
IUqalopsyIlidae - Polygmiv (Neop1~eni.s)
afopra(Jordan
am- the total offapturedd
9 W9U). This percentage
e Rosthschild, 1922); II (N)pmdoi (Wagoer, 1937) and II
~ ~ l e s s t h s t 1 % c a ~ s u c c e s r . ~ A c a r i ( n = 7 6 (Po!vgeniv)mbertimberti
7;
(Rokhild, 1905).
92,07%) and Siphaqtem (n= 66; 7.92%) were foundin the
With the exception of R maslacaliv @=I) and 7: nigrifo
ectopamite samples of the fapnned hosts
(N=7), infested with only m e specimen of M heferom/chuv
The following species of rodents were captured:
and 13 specimeos of E. mtmdu%respectively, all rodents
Blarinorqs hreviceps ( W i g , 1887); Juliomys picfipes
wereinfestedby two or mole species of mites. The prevalence
(Ospod, 1933); Mu r r m ~ ~ ~(Limmxs.
luv
1758); Nectomys
and abundance of mites are shown w Table I.
s q u a m i p (Bnnts, 1827): Or~nolnys
rus.FohuWagner, 1848;
The most ~ e a t l collected
y
species of mites were,in
~ . w f e r u vhivpkius Picieq 1843; Rhipidowp ma~t(ralis, decreasing order of prevalence: G.wolflwhni, A,fahrenholzi,
(Lund, I&U))and~ n i g r i t o f i c h t a ~ r e i 1829'
n , Four
L plislanensi.~, M parviyiinosu~and E mfunrhrr (Table
other species in the genera Akodon Meyen, 1833;
I), with lhe dme first species infesting five out of the six
B r u c e p o I t e ~ n i m H B S h k o1998;
~ DeIomysThomas. 1917
examined host species. The most abundant species was G.
oudemmsi, accounMg for 13.2% of the total number of
and O l i g o p m y s Bangs, 1900were only identifed to genera
l e v e l ~ e t o ~ F a a t h a t ~ a r e a y p t i c s p e ~ i e s ~ w ~collected
e m t mites Oligo/ymrnys sp. mas ke most abundant and
most i n f d rodent. Although J. pictips was the second
karyotypat
most abundant species, 0.russafus was the second most
Theestopmites c o l l e c t e d ~ t h were
e ~ ideotified
as: Acari lxodidae - I d e s Ioricafav Neumann, 1899,
infeshd rcdent
Laelapidae - Androlaelaps (Haemo1aeIaps)fahmnholzi
Exclusively for Sipboaaptaq
and abundance
(Berlese, 1911); E u b m c ~ I a e Im~
&v
Fomaa, 1936:
are shown on Table 2. The global petalence for fleas (14,9)
was almost 3.5 times lower than that of mites flable 1).
Gigantolaelaps gilmorei Fonseca, 1939; 6.awlernmvi
A new locality record is given for L navavi, and the
Fonseca, 1939: G. d l w h n i (Oudemans, 1910); LaeIaps
w
a
x
Tablel. ~ b y t w O u ~ A c a r i s p e d e s m ~ ~ f m n ~ P a r q u e E s t a h r a l d a ~ ~ S t a P e d S H o P a u l o ,
Brazil, fmn F e b m r y 2WO to January 2Mll.
Hodts
*
-
W.
SP.
SP
W)
W11)
'
%=wmF
%Cwn
% ( w n
P-5)
% ( q n
15.90 ( 7/44 14
9.09 (1H1) 1
17.35 (13115)47
~~ 2954 (1W)41
a09 (1111) 1
&a'i
Aholaebps
aherhdd
,um&5
Gigantolselaps
5.35
010
I.=(ins) 10
2.27 ( l w ) 2
0-ys
Nssaba
w7)
P+'=
W)
%(Iw~
%(IWn
11.76 M17) 4
.
2ls ~
716 )
spanbes
(K 1)
%(IWn
TcM
W184)
% m n
2500 (W)29
17.39 (321184) 95
277 (1136) 1
1032 (lW84) 53
TI (1136) 3
lm.00 ( i n ) 16
277 ( 1 m 18
1m.m(ln) 68
4.34 ~ 8 447)
gamwei
G.- ~udfl;rtar
~xodeslaicdus
4.51,244)3
227 (1144) 7
22?(1~)3
9.09 ( m i ) i
-
12.00 (snq 1s
266 V 5 ) 2
266 (2175) 10
2sm (21R5) 51
1.33(1r7!5)3
LaMaps casbd
Lrraraa'
L
LLhai
4.54 (ZU4) 3
221(1M4)6
~ysolaelaps
p;uvispinmus
4.51 , 2 4 4 ) ~
266 08
s m p m ) s2
gm(ini)3
Rw.
XI
3529 (817)1%
5.m (in- 1
5S8 (1117) 13
5.88(1117) 1
w ~ ~ + 4 zn . m w 7 ) 3
a= (y36) 9
a s p e ) 11
-
Z.Ol (SICS) 51
833 (3136)6
n.n ~ 1 3 6 ) ~
W.l
.
13.1.2935
.
.
(2006)
( M I . J. Vet P a . )
-
6 9 (12fl8.1) 221
1793 p w w ) im
7.m ( 1 ~ 8 429
)
1.m(2llac) 2
780 (141184) 83
14.13
64
0.54 (1H84) 3
13.m ~ ~ 8?
4fi )
PBe-
32
et al.
T-2
RevalenoedSiphoreptRaspgjaonaMmdRltsfmmk ~ E ~ d a C a n l a e i rSt4edSioPaub.
a .
Brazil, fmn February 2000 to January 2 0 0 .
Table3.Averageinkstatbninlemities(MI)andMluesdedoparasi(espedliCjtyidices(SI)onuadrodentsfmn~Paque
Estadual da C a n e , state of Sgo Paub B d , fmm February2000to Jamaiy 2001.
k k
-
TaMe4.Wuesoflii~coemdentsmrrespanding
following species C.minenu and P.(N.)pmdoi wpre fouod
standad
(SE). P-vallug for the tests that verify if the
for the f
& time on B. b r w ; as well as A.fahrenhohi, E.
mgllarcoefficient
is aanot differentfrom m,
null hyphoteS3s
rafundu~,G.wolffmhni, M . p m i s p i n ~ sC.
~ minemaand
,
P.
meikkd of de-t
(F141).
atopus on Brucepoftmonius sp.; and A. fahrenbolzi, E.
(b=O). d the
mhrnhrv, G.g i l d , G. mdemansi, I. loricafu~,
L. mnmi. L.
plisf-.
MparvispinmusandP.aiopmonJ.picfiper.
The avaage i n f d o n intensity and specificity indices
oa
for five species of hosts are shown, for bad mites and fleas,
sp.
266 0.82 0.012 0 . m 0.m
8
7 sp. 029 024 0.101 0.020 0.007 a.6
on Table 3. The relationships between the ectoparasite's
0.m
0.0
4.4 28 0.032 0 . W
Julianys
specificity indices and average infestation intensities,
0 . S 4.033 0.016 0.094 16.4
sp.
4.53
&sti~~h,aoatyzsdb~m~oflinear~imansideriog
0.07 2.38 0.150 0.056 0.028 40.8
Oryranys mnabrr
ouiy hosts that presented more that 10 caplred individuals,
are shown on Table 4
a d ba-e.
linear and a q b r fimng memdents.
-
. --
RRL
P;rariM. W. 13,1.Z9-35(2001)
(Brazil. J. Mt PaasiM.)
~ U W
abd two horn$ respectively.
That there a tendency towards the decrease in the
percentage of global infm.on €ivmSouthem to Noahem
Bradl (BARROS et al., 1993). it would be expected that the
infaration observed in this study was lower than that
observed in the SoumRn regiw as state3 of S;mta Catarina
and P a m 4 respectively, Florian&olis (la).?), and T
m
i
do Sul(98%), and higher than that recorded in the state of
M i G- f a the municipalitiesJuiz de Fora (823%), Be10
Horizon* (76,1%), and Caratinga (72,8%). Hownrer, the
&parasite global i r k a t i o n pacentage was significantly
low (53%), when compared tothose of other Bmlian +om.
~ a ~ c e ( 4 M : 8 3 3 / 1 % ) q ~ d efolntinm
l y ,
lower thanthosecited for Mandirituba and Foz do lguacu and
Tijucasdo Sul (BARROSBAlTE!jTlet al., 19981,in the state
of P
d and Juiz de Fora (LPJARDI et al., 1987), Belo
H ~ t e , ~ 1 e t a1984a)andCararingapOTELHO,
l ,
1978),in the m e of Minas Gerais.
In relalion to Acari, rhegems Gigrmtolmhp is asuciated
to the genus Oryzomys (GEnlNGER, 1987). and this
association is considered quite common (LINARDI et al.,
1991b;BARROSetaL, 19m;BARROS-BAT1EsnetaL,1997).
Nevertheless, in addition to 0.m ~ o h mthe
, ttnee collected
species of Gigmttoloelops were also obsewed infesting
Oligoryzonys sp. and J. pic*
rodents, and with lower
prevalence on A b d m sp.. Two specKs w u e also o b d
on N. squonipes and one on h e p o n a ~ ~ l i sup.r
Eubrach.vIdops r o h d u s was stmngly associated m
A M , n sp. (Table I), in arurdanee to the
available in
litcmure(MARIlWSIIATAIIOera1,ZOM). Insomcanmof
the state of Minas Gerais, E. mtundus was found more
fresuently associated to Bdonys Iasirrrrrs (Lund, 1841),
ape~ially
i f ~ n w a s n o t ~ ~ I e t 1984a).
a l . ,
Nevertheleq in arsts inwhich b& hosts ocamed, thehigher
prevalence was observed for the genus Aliuhn (BOTELHO
etal, 1981; LOPESetal, 1989). Jnt h e p s e n t s t u d y , ~ i m m
of E. mh&
were also found infestingh e r rodent species,
although with low pevaleuce. This was also observed in the
southem (LINARDI et al., 1991b; BARROS et al., 1993;
BARROSBATTESTI et al, 1998) and scud~easten~
regions
(BoTELHOetal, 1981;LlNARDIetaL, 1984a,BOTELHO;
LINARDI, 1988).
In relation to flea infestations, the abundance is s i m i h
to that observed in previous studies (BOTELHO;
WILLIAMS, 1980;BOTELHOetaL, l%L;LINARDIetal.,
198* GLTfTONet al., 1986; WHITAKER; DIETZ 1987;
BOTELHO; LINARDI,1996, BARROS-BATTESTI et al.,
1998). N t h the exception of lhoserodent species that were
rarely captured (less than 10 individuals), the highest
prevalence of fleas was observed for 0. msohts, even
thbllgh Akodon sp, J. piciipes and Oligoryomys sp.
collected in higher numbers (Tahle 2).
The most abundant fleaswas I! (N.) -,
collected on
seveo of eight examined b.
The mnaining
Cm
mineryo, F! (I?) mherti e I! (N.)pm&i, were r e d m faq
data
If atopus onh? qmmipes and 0.~wrofu~,
and and2! fP) mberti
on N. .srpomiper.
Considezing all collected ectopamites with an average
infestation of 10or more parasites per hast, the hi&& mean
inf&ath intensities (MI) were observed for G. gilmorei on
Oligo?zomjn sp., G. outkmomiand L n m i m 0.m v s d u ~ ,
and G. o d m o m i and C. minenw on J. pictipa.
Thehighest specificity indices (SI), i.e. higher than 50%,
W e r e obsewed for G. w l f i o h n i , L. costroi, L. thori, L.
panlistonensis, M prvi~pinosrrsand F! (.V) pradoi on
OIigwymrnmys sp., followed by G. gi'Imorriand G.& m i
on 0.russalhlr and L nnvrrri and C.rninenm onJ. pictipe.~
(Table 3). In the State o f S b Paulo, L novu~iis known &om
the bolotype, wlleaed on a wild rodent, probably of the
genus Oryzomys, captured in the vincinity of the Butantan
Institute in 1937(FONSECA, 1939).A second m o d of this
s p i e s , on N. squomipes and O ~ ~ ~ olornia
m y sThomas, 1901,
is known FiumIlhaGranle, slateof Rio deJaneim (CUIlTON
et al., 1986). In the present study, although L n m s i was
found on 0.msolus, O l i ~ m ysp.
s and Akodon sp., the
highest pevalence ~~XBSobserved on J. piclipes, with high
specificity index (Tables 1 and 3). The presence of L. nm~avi
in the Serra da Cantareira represents not only new host
records but also the second record of this spxies in the
state of S%o Paulo.
AsrareasLmmri,L thwi,withonlythreeidividuals
wllestpd on misp (Tables I and 3A1epsmts n m
laalityandbastreands,sincethetype,d5cribediiumBrasil,
hasno localityahosr data (FONSECA, 1939).It's nrurrence
wds later recorded in Panam& infesting rcdenrs of the genera
~
a
n
d TIPTON, 1%).
P
~
In relation to the fleas, with the exception of that of C. rn.
minenu on J. pictipes (Table 3), &e low specificity indices
were cqected According to L i (1985). thae is no host
#city
among the species of the f b i l y Rhopalnpsyllidae,
although feeding preferences for some host taxa can be
obswed.
A hear relationship, at a signiiicance level of 5Y' wi&Pduff
< 0.05, wis o b s e ~ ~ only
e d for Bmcep#er.suniur sp.
and 0.mssotm (Table 4).Onthe other hand, less than50% of
the variability (Rb)was observed for Akodon sp.,
O / i p y w m y s.F., 0.msohm and J . pictipa, even though,
accwding toMarshall (1981), specificityindicaaredirectly
proportional to the number of infested hosts.
Aclmowkdgmentx-This work was partially supported
by the FundaqZo de Amparo i Pesquisa do Estado de S%
Paulo (FAPESP) 99/05446-8 to DMBB. We thank the
Instituto Brasileiro de Meio Ambiente e dos Reclvsos
Naturais Renonhveis (IBAMA) by means of license (7941
99) for permiting &e capture and the handling of wild
animals. Wealso thank Alexandre Pecequillo forcoafirming
the identitication of wild mammals, and Donald Gettinger
Rn.Bras. PsssiW. Vet. 13.1.29-35 12004)
1-(.
Highest pzevalences were
obtainedfor C. m. r n i m and P (N)prodoi on B. brrviceps,
J. Vet M.)
~
34
for confirming the identification of Loelops nava..i and L.
thori.
th%&&s
* al.
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Recebidoeml7demapde2004.
Aceito para pubti*
em 22 dejunho de 2004
Rcv. Srap Panritol. Vet., 13.1.29-35 (2W4)
(-1.
J. Vet P d l . )