New liver fluke Primefact from NSW DPI: ‘Liver fluke – a review’

A new edition of this Primefact has been published on the NSW DPI website:

‘Liver fluke – a review’, April 2017, Primefact 813, second edition.   Published 2017-04-21.

This Primefact is a companion to Dr Boray’s liver fluke Primefact (446; 4th ed, March 2017), which was also revised/updated recently (but still mostly ‘pure Boray’). http://www.dpi.nsw.gov.au/animals-and-livestock/sheep/health/internal-parasites/liverfluke-disease-sheep-cattle
Primefact 813 is ~ 19 (!) pages long (including some nice pics, tables, and a very long reference list), and has been written at 3 levels:
1. Summary at the front. About half a page; bare-bones summary.
It also contains a link/reference to Dr Boray’s Primefact which really targets the broad, middle ground. (A giant in the world of parasitology, Joe could also write appropriately for different ‘audiences’).
2. The guts of the Primefact. Target: producers, advisers and others who are somewhat to very interested and motivated with respect to liver fluke.  A range of fluke-related topics are covered, and in some detail. Many salient facts from recent literature (mostly the last decade; Australia and Europe etc)) are included. (Can liver fluke cross- and self-fertilize?  Did you know about its cuticular spines? How long do metacercariae live? Vaccines? When do the antibody and coproantigen ELISAs detect fluke infections?)  References are cited.
3. The appendix.  This is for the serious reader. A bit more hard core.   Tabulated summaries of information on flukicide synergism, characteristics of various flukicides, flukicide resistance, and features of the various diagnostic tests. (Does one cross-react with stomach fluke?).
It also contains a link to two tabulated summaries (available as PDFs) in WormMail on flukicide efficacy, and more on synergism, etc.
In addition there are notes on sundry and various, including human infections, prenatal infection, why nitroxynil is not given orally, why salicylanilides are not so effective against immature fluke, the only flukicide for which resistance is not yet recorded? etc etc   But, there are no steak knives.  In short, it contains answers to some of my own questions which I could never find in one place, or in several places.
~~~~~~~~~~
An enormous debt of gratitude is owed to Dr Joe Boray. And, several years ago, he also wrote some essays on fluke for the WormMail newsletter. These are referenced in PrimeFact 813 as well.
See also the great article on Joe written by Dr Bruce Watt (at the end of the revised version of Joe Boray’s Primefact (446)).

SL, Armidale NSW 2017-04-26

WRML.2017-04-21.wormfax.rat lungworm. weaners-winter.macropod worms. wild dog walking etc

In this issue:

  • Wormfax
  • Rat lung worm
  • Worms-weaners-winter – WormBoss
  • Pathology and diagnosis of internal parasites of ruminants – Love and Hutchinson 2003
  • Roo worms (Labiosimplex sp) – Sandow/Hemley/Spratt/Aust Socy Parasitol
  • Livestock memorabilia
  • Wild dog walking – Ballard
  • On-line security – Spider Oak

WormFaxNSW-March 2017

http://www.dpi.nsw.gov.au/about-us/publications/wormfax

rat-lungworm-disease

http://edition.cnn.com/2017/04/10/health/hawaii-rat-lungworm-disease-parasite/

Thanks GK.

(Another reason ‘real’ men don’t eat vegetables? (joking!)…but then there is the pork tapeworm..T solium…so real men don’t eat bacon either?   (but does T solium survive in bacon/the curing process??  I see a research project happening…)

Worms-weaners-winter

http://www.wormboss.com.au/news/articles/tests/wormtest-weaner-lambs-and-kids-in-autumn-and-winter.php   Thanks ParaBoss (Subscribe to ParaBoss News: http://www.paraboss.com.au/news.php)

Pathology and diagnosis of internal parasites of ruminants – Love and Hutchinson 2003

https://wormmailinthecloud.wordpress.com/2017/04/20/wrml-2017-04-20-love-and-hutchinson-2003-pathology-and-diagnosis-of-internal-parasites-of-ruminants/    (Preserving good info from VG Cole (1986) etc)

‘Roo’ worms – Labiosimplex / Labiostrongylus

Image credit/source: Ruth Sandow

A photo by Ruth Sandow via Dr Sophie Hemley (District Vet Officer, Local Land Services, Broken Hill, NSW): nematodes in a ‘red roo’ (Macropus rufus). Location: Milparinka, 200 km north of Broken Hill (‘Corner country’, outback NSW).

Dr Dave Spratt (CSIRO), guru on worms of Australian native fauna (along with Ian Beveridge and others), advised as follows:

“Depending on what species the “roo” (or wallaby) was, those large nematodes are species of either Labiostrongylus, Labiosimplex or Labiomultiplex, very common in the stomachs of macropodids.’

“(Being a) “a red ‘roo’, then those nematodes are Labiosimplex of which three species occur in reds”.

I don’t know what species these worms are, but there is some information on Labiosimplex in a paper by Smales, 2011:

Smales LR, 2011. New species and new locality records of the nematode genus Labiosimplex (Strongylida: Chabertiidae) from macropodid marsupials in Western Australia. RECORDS OF THE WESTERN AUSTRALIAN MUSEUM 183–190 (2011). Author information: Parasitology Section, South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia. Accessed April 2017 at http://museum.wa.gov.au/research/records-supplements/records/new-species-and-new-locality-records-nematode-genus-labiosimple

The Labiosimplex  described by Smales are large robust nematodes; male: length 22-27 (23.9) mm; female length 27-33 (30.3) mm. But Smales describes another species in this paper which are larger: male: 45 mm long (average) and females 80 mm.

BUT… I did find this:

“4.11. 1. Macropods (kangaroos and wallabies)
The kangaroos and wallabies harbour the most diverse parasite faunas
of all of the marsupials. By far the most numerous are the strongyloid
nematodes found in the sacculated forestomachs (Fig. 4.11.1), with 250
species described so far but with many more yet to describe. Nematodes
also occur in very large numbers (up to 500, 000) in the forestomach
and are frequently encountered at autopsy. The species described here
have been selected because they are the most frequently encountered
or because they are pathogenic. For simplicity, the term “kangaroo” has
been used to include all kangaroos and wallabies.
Fig. 4.11.1. Stomach of an agile wallaby, Macropus agilis, with
strongyloid nematatodes. (Image courtesy of I. Beveridge).
4.11.1.1 Gastrointestinal tract
Stomach
Labiostrongylus spp.
Species of Labiostrongylus are large (to 10 cm) nematodes found
in the lumen of the sacculate forestomachs; for simplicity, the
numerous species as well as those of the related genera Labiosimplex,
Labiomultiplex, Parazoniolaimus and Potorostrongylus are dealt with
together.”   “Eggs are passed in faeces and a doubly ensheathed L3 emerges from
the egg; the L3 is ingested and migrates into the gastric mucosa; the L4
and adult are found in the stomach lumen. The life cycle may be highly
seasonal with one generation per year and with the development of
adults and the onset of egg laying coinciding with the most favourable
climatic conditions (low temperatures, high rainfall)”. (Emphases (bolding) is mine-SL)

Source: Australasian_Animal_Parasites_Inside_Out-Aust Socy Parasitol-Feb 2015 edition. retrieved 2015-08-11.pdf. Section 4.11: Australian wildlife – monotremes and marsupials, pages ~ 982-985.   Published by Australian Society for Parasitology.  http://parasite.org.au/publications/australasian-animal-parasites-inside-and-out/

Livestock memorabilia

Tenterfield Railway Museum 2017-03 (livestock memorabilia)

Lister-Todd fogging machine: c 1950. For applying insecticide to sheep in tent or enclosed space. Donated by Deepwater Station.
Cattle wagon: Tens of thousands of cattle were transported from Tenterfield in similar wagons.
Queensland sheep wagon, c.1942. (Light grey wagon). Mounted on NSW standard gauge bogey.

Pictures: SL

Aerial infrared image of wild dog walking

From DPI Facebook post by Dr Guy Ballard (NSW DPI Armidale):

This infrared image shows a wild dog walking through pine forest in southern NSW. It is an important proof-of-concept for pursuing improved monitoring of invasive species via aerial platforms in heavily vegetated environments. It is yet another product of a valuable collaboration between NSW DPI and Riverina LLS, working alongside private contractors, National Parks and Forestry Corp.

Spideroak on-line security tips

https://spideroak.com/infosec?email=5385&label=See%20our%2025%20privacy/security%20tips

(Privacy and security?  consider also aerial infrared photography? 🙂