All about Fish Vetting – Dr Richmond Loh
If your fish is failing in sight, you can hand feed them.
Check out this link to a video a colleague shared with me – http://interactive.sheddaquarium.org/2013/04/blind-seadragon-gets-a-helping-hand.html
Notice that the fish is held underwater at all times.
Learn about the hagfish, flying fish, fishing fish (frog fish), stingrays, face changing flounder and buoyancy control.
It’s not all about fish, but also smart squids, scallops with eyes, sea squirts, super snails, stromatolites and smashing mantis shrimp with their eyes!
Check out some of the extraordinary footage of sea life at the following link:
Don’t miss this great opportunity to learn about fish diseases.
Topics covered include:
| 9.00 – 9.45 | Lecture 1: Chasing the true pathogen – investigating the aetiology of new and emerging diseases in finfish.(Loneragan LT)
|
| 9.45 – 10.30 | Lecture 2: Disease investigations and pathology of shrimp and mollusks. (Loneragan LT)
|
| 10.30 – 11.30 | Morning tea and coffee |
| 11.30 – 13.30 | Practical glass slides session – conundrums. (Microscope suite VBSEC3.107) |
| 13.30 – 14.30 | Lunch |
| 14.30 – 15.15 | Lecture 3: Newly emerging and exotic diseases, highlighting the role of electron microscopy in the investigation of aquatic animal health, to reveal the nature of viruses. (VBS3.023)
|
| 15.15 – 16.00 | Lecture 4: Newly emerging nutritional and metabolic disease of finfish. (VBS3.023)
|
| 16.00 – 16.30 | Afternoon tea |
| 16.30 – 17.15 | Lecture 5: Special topics – To be announced (VBS3.023) |
Click on the link below to download the detailed itinerary and registration form.
Please complete this form and send to: Dr. Susan Kueh
Email: S.Kueh@murdoch.edu.au
A background on visit
2012-2013 FRDC Visiting Expert Bursary – Prof. Eimeritus Teruo Miyazaki.
This visit forms part of an Australia wide tour by Prof. Miyazaki under the ‘People development program: Aquatic animal health training scheme’ and is funded by the FRDC on behalf of the Australian Government.
Improving aquatic animal health diagnostic capacity is a priority for FRDC specifically to prevent and manage disease incursions, and to develop diagnostic procedures and techniques to rapidly detect and identify pathogens. This is also a priority for state jurisdictions.
Viral diseases are among the most important of all health issues in aquaculture and fisheries. Their rapid and accurate recognition is central to the prevention of spread and the control of emerging diseases. Morphological diagnosis based on gross pathology, histopathology and electron microscopy is vital in the diagnostic process, and is essential to complement accurate molecular aetiolgical diagnosis. However, practitioners of morphological diagnosis are becoming scarce.
The FRDC Visiting Expert Bursary awarded to Dr Teruo Miyazaki from Japan enables knowledge transfer from one of the world’s foremost experts, in a small group setting, with plenty of opportunity for discussion. In addition to viral diseases, Dr Miyazaki has career long expertise in general fish pathology, so his visit presents diverse opportunities for continuing education of Australian aquatic animal health diagnosticians. Molluscs and crustaceans will also be covered at the workshops.
Beneficiaries include aquatic animal health diagnostic laboratories throughout Australia and the potential impact is enhanced diagnostic capacity, enabling more rapid and accurate diagnosis of finfish diseases, which facilitates disease prevention and control, and greater industry awareness of aquatic animal health. The visit provides a unique opportunity for exchange of technical information pertaining to the diagnosis of internationally significant diseases of aquatic animals, and for specific instruction of Australian laboratory diagnosticians.
Dr Teruo Miyazaki is Professor Emeritus in the Graduate School of Bioresources, Mie University, Japan. He has an extraordinary career history spanning 40 years of active engagement in aquatic animal health. He is the author of several textbooks including the highly regarded “Color Atlas of Fish Histopathology” (Vols 1 and 2) and numerous scientific papers.
Professor Teruo Miyazaki
Teruo Miyazaki is Professor Emeritus at the Graduate School of Bioresources, Mie University since 2012. From 1973 to 1975 he was Assistant Professor at the Faculty of Fisheries, MiePrefecturalUniversity, from 1975 to 1984 Assistant Professor at the Faculty of Fisheries, MieUniversity, from 1984 to 1987 Associate Professor in the Faculty of Fisheries, MieUniversity, and from 1987 to 1994 Associate Professor in the Faculty of Bioresources, MieUniversity. He gained a Bachelor of Fisheries (1971) in Mie Prefectural University, a Master of Agriculture (1973) in the University of Tokyo, and a Ph. D. (1979) also in the University of Tokyo.
His research is focused on histopathological features of major bacterial, fungal, parasitic, nutritional and viral diseases of cultured marine and freshwater fishes. His work has also involved demonstrating the ultrastructural features of major viral diseases by TEM. He has published over 100 papers in international journals and two books entitled “ Color Atlas of Fish Histopathology; Volumes 1 & 2”. He is also involved in supervision of many Japanese and foreign students for doctorate and master degrees.
Click on the link below to download the itinerary and registration form.
Did you know that the fish parasite that causes a condition called velvet disease, Oodinium, is actually an algae? This is the reason that the treatment of choice is a copper-based medication, and that keeping the aquarium lights off are some of the best methods for control? Re-infection is common since they are able to colonise the gut, so make sure that you treat continuously for at least 10 days.
Check out the most recent video I’ve uploaded – http://youtu.be/nksJqTOQMbk
You can read more about it by getting Dr Loh’s book, “Fish Vetting Essentials“.
This is a question asked of me by a colleague recently. What happens when the water temperature rises? Is it due to reduced dissolved oxygen levels or anoxia (link to article)? Is it due to impaired cardiovascular function (link to article)? Is it due to the increased presence of dangers such as jellyfish or algae? Is it immunosuppressive? Maybe reovirus might be playing a role?
When working at the labs in Tasmania as a veterinary fish pathologist, I did see quite a number of fish hearts which we described as having a “mural reaction” on microscopic examination. In simpler terms, there was a fuzziness to the look of the heart, indicating inflammation. Since such findings are not specific to any particular disease, there was also testing to look for the presence or absence of various pathogens, bacterial or viral. A thorough study would be indicated to correlate these findings with the water temperature and presence of pathogens.
Have a read of the articles below and see if it adds to more information.
| Journal of Fish Diseases | |||||||||||||||||
| Volume 36, Number 5 (May 2013) | |||||||||||||||||
 |
Piscine reovirus (PRV) in wild Atlantic salmon,Salmo salarL., and sea-trout, Salmo truttaL., in Norway | ||||||||||||||||
| Authors: | Å. H. Garseth, C. Fritsvold, M. Opheim, E. Skjerve, E. Biering | ||||||||||||||||
| Author Affiliations: |
|
||||||||||||||||
| Source: | Journal of Fish Diseases, Volume 36, Number 5 (May 2013) | ||||||||||||||||
| Page Numbers: | 483 – 493 | ||||||||||||||||
| Available Full Text: |
|
||||||||||||||||
| Abstract: | This is the first comprehensive study on the occurrence and distribution of piscine reovirus (PRV) in Atlantic salmon, Salmo salarL., caught in Norwegian rivers. PRV is a newly discovered reovirus associated with heart and skeletal muscle inflammation (HSMI), a serious and commercially important disease affecting farmed Atlantic salmon in Norway. A cross-sectional survey based on real-time RT-PCRscreening of head kidney samples from wild, cultivated and escaped farmed Atlantic salmon caught from 2007 to 2009 in Norwegian rivers has been conducted. In addition, anadromous trout (sea-trout), Salmo truttaL., caught from 2007 to 2010, and anadromous Arctic char, Salvelinus alpinus(L.), caught from 2007 to 2009, were tested. PRVwas detected in Atlantic salmon from all counties included in the study and in 31 of 36 examined rivers. PRVwas also detected in sea-trout but not in anadromous Arctic char. In this study, the mean proportion of PRVpositives was 13.4% in wild Atlantic salmon, 24.0% in salmon released for stock enhancement purposes and 55.2% in escaped farmed salmon. Histopathological examination of hearts from 21 PRV-positive wild and one cultivated salmon (Ct values ranging from 17.0 to 39.8) revealed no HSMI-related lesions. Thus, it seems that PRVis widespread in Atlantic salmon returning to Norwegian rivers, and that the virus can be present in high titres without causing lesions traditionally associated with HSMI. | ||||||||||||||||
| Citation: | Å. H. Garseth, C. Fritsvold, M. Opheim, E. Skjerve, E. Biering . Piscine reovirus (PRV) in wild Atlantic salmon,Salmo salarL., and sea-trout, Salmo truttaL., in Norway. Journal of Fish Diseases, Volume 36, Number 5 (May 2013), pp. 483-493, <http://ejournals.ebsco.com/direct.asp?ArticleID=4F948FD160688861678E> | ||||||||||||||||
| URL: | http://ejournals.ebsco.com/direct.asp?ArticleID=4F948FD160688861678E | ||||||||||||||||
I’ve fallen slightly behind the times, but when the NSW Dept of Primary Industries called me recently to ask me to be their consultant fish veterinarian, I had to do some calling around to get veterinary registration in that state.
Then I found that if I was already registered in another Australian state, I didn’t have to get a secondary registration!
The NSW Veterinary Practice Act 2003 has been amended to accommodate National Recognition of Veterinary Registration (NRVR) as of 20 September 2011.
from: http://www.ava.com.au/newsarticle/national-recognition-veterinary-registration-nsw
Sweet!
Now I’m not only confined to working in WA, Victoria and Tasmania (see link to previous post), but I’m also now allowed to practice in NSW!
So, if you need to book me in for a site visit, there’ll be no delays in getting me out there to see your fish facility.
Follow me on: Facebook "Fin Page" – YouTube – Blog – Linkedin – Twitter
—
Yours sincerely,
Dr Richmond Loh DipProjMgt, BSc, BVMS, MPhil (Pathology) Murdoch, MANZCVS (Aquatics & Pathobiology).
Veterinarian | Adjunct Lecturer Murdoch University | WAVMA President-Elect |
Secretary Aquatic Animal Health Chapter – Australian and New Zealand College of Veterinary Scientists (ANZCVS).
The Fish Vet, Perth, Western Australia, AUSTRALIA. Mobile Veterinary Medical & Diagnostic Services for fish and other aquatic creatures.
http://www.thefishvet.com.au
Ph: +61 (0)421 822 383
Looking for more books? Check out this site.
Q: What do you call a shoe fish?
A: a cobbler.
From: The University of St Andrews and TheFishSite.com
Date: 11 April 2013 21:34:39 AWST
To:
Subject: Advanced Fish/Shrimp Courses in Sustainable Aquaculture
Reply-To: The University of St Andrews and TheFishSite.com
NEW ADVANCED COURSES START 28th MAY 2013
Our TWO NEW on-line Postgraduate Certificates in Sustainable Aquaculture will start the last week in May 2013.
Enquire/Apply Now!
If you are interested in gaining an advanced qualification in either sustainable SHRIMP (invertebrates) or FISH (vertebrates) production from the University of St Andrews, now is the time to enquire/apply.
The award of Postgraduate Certificate in Sustainable Aquaculture requires 60 credits gained from taught modules over a one year period. There are two courses available, one focusing on vertebrates (fish) and the second on invertebrates (shellfish, molluscs etc.).
Benefits of e-Learning
There are many advantages to online learning. Here are a few to consider:
Convenience and Flexibility
Your learning can be organised to meet your schedule
There is no need to physically attend college
Learning is delivered at a pace to suit you
No time restrictions – courses are available 24/7
No physical restrictions – study at home, work, or on the road
For more details on both courses visit the Course Details page.
If you would like to discuss any aspect of the course please feel free to contact the course director:
Dr Neil Hazon
Scottish Oceans Research Institute
University of St Andrews.
Telephone: + 44 1334 463451
e-mail: nh1@st-andrews.ac.uk
—
Yours sincerely,
Dr Richmond Loh
DipProjMgt, BSc, BVMS, MPhil (Pathology) Murdoch, MANZCVS (Aquatics& Pathobiology).
The Fish Vet, Perth, Western Australia.
Veterinary Medicine for fish.
W: http://www.thefishvet.com.au
E: thefishvet
P: +61 (0)421 822 383
Do we really want to introduce it to Australia (see link to a previous post)?
Once released, you can never take it back.
The latest research on the epidemiology of KHV below, shows this is what could happen.
| Journal of Fish Diseases | |||||||||||||||||
| Volume 36, Number 5 (May 2013) | |||||||||||||||||
| |
Do wild fish species contribute to the transmission of koi herpesvirus to carp in hatchery ponds? | ||||||||||||||||
| Authors: | M Fabian, A Baumer, D Steinhagen | ||||||||||||||||
| Author Affiliations: |
|
||||||||||||||||
| Source: | Journal of Fish Diseases, Volume 36, Number 5 (May 2013) | ||||||||||||||||
| Page Numbers: | 505 – 514 | ||||||||||||||||
| Available Full Text: |
|
||||||||||||||||
| Abstract: | The koi herpesvirus (KHV) has spread worldwide since its discovery in 1998 and causes disease and mortality in koi and common carp populations with a high impact on the carp production industry. Many investigations have been conducted to examine ways of distribution and to identify possible transmission vectors. The answers, however, raise many new questions. In the present study, different wild fish species taken from carp ponds with a history of KHVinfection were examined for their susceptibility to the virus. In the tissue of these fish, the virus load was determined and it was tested whether a release of the virus could be induced by stress and the virus then could be transferred to naive carp. Wild fish were gathered from carp ponds during acute outbreaks of virus-induced mortality in summer and from ponds stocked with carp carrying a latent KHVinfection. From these ponds, wild fish were collected during the harvesting process in autumn or spring when the ponds were drained. We found that regardless of season, temperature variation, age and infection status of the carp stock, wild fish from carp ponds and its outlets could be tested positive for the KHVgenome using real-time PCRwith a low prevalence and virus load. Furthermore, virus transfer to naive carp was observed after a period of cohabitation. Cyprinid and non-cyprinid wild fish can therefore be considered as an epidemiological risk for pond carp farms. | ||||||||||||||||
| Citation: | M Fabian, A Baumer, D Steinhagen . Do wild fish species contribute to the transmission of koi herpesvirus to carp in hatchery ponds?. Journal of Fish Diseases, Volume 36, Number 5 (May 2013), pp. 505-514, <http://ejournals.ebsco.com/direct.asp?ArticleID=488DAFFC68095DEB75FE> | ||||||||||||||||
| URL: | http://ejournals.ebsco.com/direct.asp?ArticleID=488DAFFC68095DEB75FE | ||||||||||||||||