Article View: sci.bio.herp
Article #101Re: species specific diseases
From: Alison Goodfellow
Date: Fri, 17 Mar 1995 03:27
Date: Fri, 17 Mar 1995 03:27
71 lines
9295 bytes
9295 bytes
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��z���n#|t��7tC4,W�Xt�\ P�P��;XP����������������������������������������?xxx,_��x�6X@ɓ8�;X@����������������������������������������2b.alts�$� iteg+[AL LEPYT]S-774lpr -Prm259 <f>����9k-�$us2n((H--Bu/rs/wp51/hs/bilehaer.wpA-Stre(%/usr/wp51/shlib/��2X � �? ��OZUS�� .,., ��#�x@_�@#�� ��6�&�6�&StandardH&�'H&�'HPLASIID.PRSXt�\ ������� �I received two interesting email replies on "species specific" cane
I am re�posting here
for the parasitology group:
1. From Diane.Barton@jcu.edu.au Sat Mar 11 15:38:51 1995
Return-Path: <Diane.Barton@jcu.edu.au>
I have been reading with interest the postings about the biological
control project for Bufo marinus in Australia. I am slightly
involved with this project as I have just completed my PhD on the
helminths of Bufo in Australia with a view to see if any are
potential control agents.
To let you know where I stand, I am not an official member of the
cane toad group but have received some financial support from them
for field trips, etc. The views I express here are my own personal
views and do not necessarily reflect the views of any other member
of the toad group.
When the toad was introduced to Australia no study was done on the
diseases that it carried. So any study of potential control agents
for the toad in Australia had to start from scratch to see what the
toad has here (in Australia) and compare it to reports from South
America and other Australian amphibians to determine if the toad
has introduced anything and/or if it has acquired anything since
its introduction.
The toad project, as a whole, is a complete study of the
biology/ecology/diseases/reproduction/feeding/etc of the toad.
There have been 2 phases to the project - the first looked only in
Australia (based in Townsville, North Queensland) at diseases,
larval and adult ecology. The second phase was under the control
of CSIRO and expanded to include study sites in the toads native
area (Venezuela and Brazil).
� � � � �� Ԍ�Part of this phase has found Bufo to be infected with viruses in
Venezuela. At the moment tests are under way to assess the
viability of the viruses - do they actually affect the toad, do
they transmit to other (Australian) species of frogs/reptiles/fish,
how do they transmit?
My interest, specifically, is the helminth parasites of toads (and
frogs) to see if Bufo introduced anyhting that may have transmitted
across and be causing some problems. Although Bufo is infected
with a much higher number of helminth species in Australia (24)
compared to South America (I have recently returned from there and
found 9 types of helminths in Venezuela - taxonomy to come), I can
confidently say they are all of Australian origin. So the toad
Work by Benoir Delvinquier (PhD in 1988) found Bufo did introduce
4 species of protists, of which 3 transmitted to native frogs with
no apparent ill-effect.
As far as viruses go, the research is still in its infancy. A
virus was found in Townsville Bufo (called the Bohle virus) but
also in some native frogs and fish. Its origins are unknown (as
far as I know). At present, there is a person employed to wander
the countryside collecting sera from Bufo in Australia to check
against the Venezuelan viruses. Where this will all lead is still
a little in the dark - will they also have tointroduce a vector
ut not in
Australia), can they insure the virus will not harm ANY native
species (amphibian, fish, or otherwise)?
Any return comments will be welcome,
If you have actually read this far - thanks.
Di Barton
Zoology Dept
James Cook University
Townsville� � � � �� ԌQld Australia
email: Diane.Barton@jcu.edu.au
2. From Richard.Speare@jcu.edu.au Mon Mar 13 09:48:01 1995
Return-Path: <Richard.Speare@jcu.edu.au>
Dear Alison
Noted your comments on the parasite net. I imagine that the virus
you are refering to are the Iridoviruses isolated by
microbiologists from Bufo marinus in Venezuala. These have been
imported into the Australian Animal Health Laboratory (AAHL) at
Geelong for further characterisation and experimental infections.
AAHL have also imported a range of other Iridoviruses including
Frog Virus 3, Tadpole Edema Virus. From me they also have Bohle
Virus, an Iridovirus I isolated in the Townsville region from
wing frogs. Bohle Virus kills cane toads, various species of
frogs and barramundi. Not an ideal control agent!
AAHL is a high security laboratory, probably the best in the world.
Once a virus goes in, it doesn't come out. Obviously, if a good
biological control agent is found, an exception to the rule will
have to be made. I have confidence in AAHL's integrity and see the
importation of these foreign viruses as a necessary step in the
process of screening potential control agents.
Regards
Rick Speare
Dept of Public Health and Tropical Medicine
James Cook University
Townsville
Ph: 077-212281
Fax: 077-715032
_________________________________________________________________
Dr Alison Goodfellow� � � � �� ԌMolecular Genetics
Menzies School of Helath Research
alison@menzies.su.edu.au
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X-Google-Language: ENGLISH,ASCII X-Google-Thread: 1143b2,33156561a3038e80 X-Google-Attributes: gid1143b2,public X-Google-Thread: 100cf6,441fb0851c9c9e86 X-Google-Attributes: gid100cf6,public X-Google-Thread: f6a65,33156561a3038e80 X-Google-Attributes: gidf6a65,public X-Google-ArrivalTime: 1995-03-16 21:27:02 PST Path: arc1-ca.pugleaf.net!bga.com!news.sprintlink.net!cs.utexas.edu!swrinde!gatech!newsfeed.pitt.edu!uunet!in1.uu.net!munnari.oz.au!pellew.ntu.edu.au!sun2!alison From: alison@sun2.menzies.su.edu.au (Alison Goodfellow) Newsgroups: sci.bio.herp,bionet.parasitology,bionet.microbiology Subject: Re: species specific diseases Date: 17 Mar 1995 03:27:45 GMT Organization: Menzies School of Health Research, Northern Territory Lines: 68 Message-ID: <3kavjh$o8s@pellew.ntu.edu.au> References: <NEWTNews.19603.794507985.grenard@herpmed.com> <NEWTNews.29810.794514220.grenard@herpmed.com> NNTP-Posting-Host: 192.94.208.5