Q: What did the pet hermit crab say to the new arrival?
A: Long time no sea.
Managing skin fluke infestations without drugs.
I wonder what it is about water depth that can reduce infestation intensity by up to 95%. Is it the distance from the light, cooler water, or what? Interesting article, but brings up more questions than answers.
| Aquaculture | |||||||||||||||||
| Volume 403, Number 1-4 (July 2013) | |||||||||||||||||
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Diurnal pattern of skin fluke infection in cultured amberjack, Seriola dumerili, at different water depths | ||||||||||||||||
| Authors: | Sho Shirakashi, Chihaya Hirano, Hiroe Ishitani, Katsuya Ishimaru | ||||||||||||||||
| Author Affiliations: |
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| Source: | Aquaculture, Volume 403, Number 1-4 (July 2013) | ||||||||||||||||
| Page Numbers: | 19 – 23 | ||||||||||||||||
| Available Full Text: |
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| Abstract: | Skin fluke infection is a major parasitic problem in the aquaculture industry. Present control measures such as bath treatments are effective for removing flukes from fish but require extensive labour and time. Moreover, bath treatments cause great stress to the fish, and occasionally lead to post-treatment mortality. Our ultimate goal is to develop a culture technique that prevents or lowers the chance of fish encountering larval skin flukes, thus reducing infection. However, little is known about when and where these infections occur on fish farms. We conducted a field experiment at a culture site to determine the diurnal pattern of skin fluke infection at different water depths. Juvenile amberjack, Seriola dumerili, were placed in enclosed mesh cages and exposed to skin flukes at depths of 0, 2 or 4m for 4h during different times of the day. A Neobenedenia girellae infection occurred predominantly at the surface during the mid-day. The infection rate declined considerably during the night. The parasite burden was significantly decreased with water depth, and up to an 80% and 95% reduction in intensities was observed when fish were exposed at a depth of 2 and 4m, respectively. These results suggest that skin fluke infection can be significantly reduced by systematic management strategy and modification of culture techniques. | ||||||||||||||||
| Citation: | Sho Shirakashi, Chihaya Hirano, Hiroe Ishitani, Katsuya Ishimaru . Diurnal pattern of skin fluke infection in cultured amberjack, Seriola dumerili, at different water depths. Aquaculture, Volume 403, Numbers 1-4 (July 2013), pp. 19-23, <http://ejournals.ebsco.com/direct.asp?ArticleID=4C74857AD4BA90B1A7D5> | ||||||||||||||||
| URL: | http://ejournals.ebsco.com/direct.asp?ArticleID=4C74857AD4BA90B1A7D5 | ||||||||||||||||
Solids removal for aquaponic systems.
One of the limiting factors that prevents a direct technology transfer from hydroponics to aquaponics is the high level of suspended solids that can clog up the narrow diameter water lines, particularly for the NFT (nutrient film technique) method of hydroponics. Good water filtration and solids removal could fix this problem. Check out the findings in this paper.
| Journal of the World Aquaculture Society | |||||||||||||||||
| Volume 44, Number 3 (June 2013) | |||||||||||||||||
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Alternative Solids Removal for Warm Water Recirculating Raft Aquaponic Systems | ||||||||||||||||
| Authors: | Jason J. Danaher, R. Charlie Shultz, James E. Rakocy, Donald S. Bailey | ||||||||||||||||
| Author Affiliations: |
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| Source: | Journal of the World Aquaculture Society, Volume 44, Number 3 (June 2013) | ||||||||||||||||
| Page Numbers: | 374 – 383 | ||||||||||||||||
| Available Full Text: |
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| Abstract: | Aquaponics is an integrated fish and plant recirculating production system. The University of the Virgin Islands’ raft aquaponic system uses a cylindro-conical clarifier as a primary solids removal device; however, a swirl separator may offer advantages. The objectives of the 8-wk experiment were to compare water quality parameters, Nile tilapia, Oreochromis niloticus, production and water spinach, Ipomoea aquatica, production in a raft aquaponic system using a clarifier or swirl separator for primary treatment of solids in the waste stream. | ||||||||||||||||
| Citation: | Jason J. Danaher, R. Charlie Shultz, James E. Rakocy, Donald S. Bailey . Alternative Solids Removal for Warm Water Recirculating Raft Aquaponic Systems. Journal of the World Aquaculture Society, Volume 44, Number 3 (June 2013), pp. 374-383, <http://ejournals.ebsco.com/direct.asp?ArticleID=400EAD864D784A3E3D6D> | ||||||||||||||||
| URL: | http://ejournals.ebsco.com/direct.asp?ArticleID=400EAD864D784A3E3D6D | ||||||||||||||||
A report that blames flooding and not dredging for an outbreak of sick marine animals in Gladstone Harbour is a ridiculous lie, a scientist says.
“Fish, turtles and stingrays were discovered dead or dying in the waters of the harbour in 2011 and 2012. Symptoms included skin lesions and cloudy eyes. Gladstone fishermen said increased dredging to build export facilities for the coal seam gas industry was behind the outbreak of disease.”
What do you think?
Read more here – http://mobile.news.com.au/breaking-news/national/floods-to-blame-for-sick-gladstone-fish/story-e6frfku9-1226690001393
Do you need a heater and filter for your aquarium?
Question:
I’m looking at owning some fish so I was just wondering if a heater, filter etc. Is essential when getting something like a gold fish or a siamese fighting fish?
Also, I have cats so I was wondering if you have any recommendations on how to deal with keeping my fish safe or if I should not own fish at all?
Answer:
A heater is required to keep most tropical fishes unless of course, you live in the tropics where the water temperature can be naturally maintained at 24-28degC.
A filter is necessary to detoxify the wastes produced by fish in a confined water body, unless if the stocking density is as low as occurs in nature and if there are other methods to detoxify the wastes.
Speak with your local fish store for advice that fits exactly what your budget can meet. Remember, the larger the tank, the easier it is to keep.
Free webinar – Common ornamental fishes and their diseases – presented through WAVMA.
You might have missed my previous presentation?
You might have seen it before on another platform, but I’ve included more new stuff.
Check out this free webinar that I’m presenting through the World Aquatic Veterinary Medical Association.
I’ll be waking up bright an early to present it at 7am Australian Western Standard Time (Perth, WA, Australia), Tuesday 13th August.
See you online soon!
R<><
———- Forwarded message ———-
From: Dr. David Scarfe <DScarfe@avma.org>
AquaticVet WebCEPD: Common ornamental fishes and their diseases
You are invited to participate in a free WAVMA Webinar
| AquaticVet WebCEPD: Common ornamental fishes and their diseases | ||
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Description & Learning Objectives: This presentation will take a novel approach to discussing some common ornamental (pet) finfish species and some diseases aquatic veterinarians may encounter. The presentation will cover what makes those species unique, how they should be kept, and will describe clinical signs, diagnostics and treatment options of some common diseases these species encounter.
Veterinarians, veterinary students and veterinary technicians/nurses that complete a brief knowledge & skills assessment (KSA) after participating in the webinar, can receive a Continuing Education & Professional Development (CEPD) certificate.
| Title: | Common ornamental fishes and their diseases. |
| Presenter: | Richmond Loh BVMS, MPhil (Vet Path), MANZCVS (Aquatics & Pathobiology), DipPM |
| Date: | Monday, August 12 or Tuesday, August 13, 2013 (check your local time here) |
Note: The webinar will be recorded and available at a later date to those that register. After registering you will receive a confirmation email containing information about joining the Webinar.
Reserve your Webinar seat now at:
https://www3.gotomeeting.com/register/645396294
| System Requirements PC-based attendees Required: Windows® 7, Vista, XP or 2003 Server |
| Mac®-based attendees Required: Mac OS® X 10.6 or newer |
| Mobile attendees Required: iPhone®, iPad®, Android™ phone or Android tablet |
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AquaVetMed e-News provides information to veterinary and veterinary-allied subscribers concerning aquatic animal medicine, health, welfare, public health and seafood safety, obtained from a variety of sources (largely AquaVetMed subscribers). While provided by the American Veterinary Medical Association’s, Aquatic Veterinary Medicine Committee and are for public distribution, they do not necessarily reflect the opinion of the AVMA or the veterinary profession. See the AVMA Terms of Use (http://tinyurl.com/29h2rf) for further information.
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Visit our website: www.avma.org
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I’ve just handed in my final draft of my ISS Institute Fellowship Report!
It was an intense time writing up everything I had learnt during my trip to the USA to garner new and relevant information related to aquatic animal health. The report is intended as a practical reference source for its readership and it details the teachings and new knowledge I gained during the overseas Fellowhip program. I attended the Seavet course that covered veterinary medical aspects of marine megafauna such as sharks, stingrays, fish, pinnipeds, cetaceans, manatees, turtles and penguins. Along the journey, I also visited other establishments to learn about the roles veterinarian play in the various industries. I visited the Department of Agriculture in Hawaii, the University of Hawaii at Hilo, attended an aquaponics conference, and visited several aquaculture farms, ornamental fish farms and the University of Florida’s Tropical Aquaculture Laboratory in Ruskin, Florida, USA.
The report concludes with a number of practical recommendations for government, industry, associations, and the education and training sector that will help grow and consolidate a vibrant and sustainable sector for the aquatic veterinary industry in Australia.
The report editor had this to say about my final draft:
Richmond, congratulations on the draft of your report. Although you have incorporated considerable technical and specialist data, your report is by far one of the best I have ever received. It was a pleasure working through it, and I enjoyed learning a few new things about ornamental fish and aquaria (it might even restore my interest in my tropical fish tank, which has been dormant for many years). Well done !
Kind regards,
Ken Greenhill
Fellowship Adviser
International Specialised Skills Institute,
Level 1, 189 Faraday Street, Carlton, VIC 3053, AUSTRALIA
Stay tuned to be updated on when the report will be finalised and ready for access!
About the World Aquatic Veterinary Medical Association
Would you like to be a part of a global organisation that represents veterinarians working with aquatics? There are no issues too big, or too small for the World Aquatic Veterinary Medical Association (WAVMA). The WAVMA actively engages in work to reinforce the role of the veterinary profession for aquatic veterinary issues internationally. On the other end of the ‘scale’ the members-only email-list serve is a way of ‘crowd-sourcing’ information from fellow veterinarians who will have answers to questions you may have relating to your cases such as:
- How do we, or should we de-barb stingrays used in visitor interaction areas?
- Is there a cure for ‘dropsy’?
- Have you had instances of injection site myonecrosis when using enrofloxacin?
- What quarantine protocols do you recommend to clients?
- How do you prepare medicated feed for fish?
- What is your treatment protocol for cold shock in turtles?
- What are the differential diagnoses for limb deformities in frogs?
- and more!
Check out the new video on what WAVMA is about, here – http://vimeo.com/66211645
Join now at http://www.wavma.org/Become-a-member
—
Yours sincerely,
Dr Richmond Loh DipProjMgt, BSc, BVMS, MPhil (Pathology) Murdoch, MANZCVS (Aquatics & Pathobiology).
Veterinarian | Adjunct Lecturer Murdoch University | President-elect WAVMA |
Secretary Aquatic Animal Health Chapter – 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.
Dr Roy Yanong’s fundraising efforts to support a cure for childhood cancer.
Non-fish related, but it’s fish colleague related.
My friend from across our global pond is doing some fundraising and I thought I’d help him out by posting it here.
———- Forwarded message ———-
From: Yanong, Roy P.E.
Date: Sat, Jul 27, 2013 at 10:18 PM
Subject: Roy Yanong’s fundraising efforts to support a cure for childhood cancer
On September 14, 2013, I’m having my head shaved to stand in solidarity with kids fighting cancer, but more importantly, to raise money to find cures. Please support me in my fund-raising efforts on behalf of this incredibly worthwhile organization, St. Baldrick’s Foundation. This volunteer-driven charity funds more in childhood cancer research grants than any organization except the U. S. government. Your gift will give hope to infants, children, teens and young adults fighting childhood cancers. So when I ask for your support, I’m really asking you to support these kids. Thank you!
My website for this fundraiser is:
and you can either give online, or donate by phone or mail.
For more information on St. Baldrick’s Foundation, their homepage is: http://www.stbaldricks.org/
I (and the children you are supporting) appreciate any help you can give-
Thanks very much from Florida—
Sincerely,
Roy Yanong
Fish Joke for Monday-itis: Discipline.
Q: How do you discipline a raucous school of flatfish?
A: Tell them to stop floundering around.
Thanks to BT!