What do you call a colourful fish?
A rainbow fish.
It’s 1am
Just got
Off a 3 hour Skype meeting with the WAVMA communications committee.
WAVMA expanding aquatic veterinary medicine using information & communications technology – NOVICE Project.
———- Forwarded message ———-
From: Nick Saint-Erne <NSaintErne@ssg.petsmart.com>
Date: Sun, Apr 22, 2012 at 12:04 AM
Subject: WAVMA Members-L: You are invited to join the NOVICE website
To: WAVMA
From: Nick Saint-Erne <NSaintErne@ssg.petsmart.com>
Date: Sun, Apr 22, 2012 at 12:04 AM
Subject: WAVMA Members-L: You are invited to join the NOVICE website
To: WAVMA
Hello WAVMA Members!
WAVMA has incorporated the use of the Network Of Veterinary ICT [information & communications technology] in Education (NOVICE).
You must be a veterinarian, veterinary student, ICT educator or veterinary educator to become a member of the NOVICE network.
Once you have become a member, which is free of costs, you will be able to use group discussion boards, blogs and wikis to discuss veterinary topics with like-minded people.
Currently there are over 2000 members of NOVICE. The website was founded by five European Veterinary Schools and is funded by the European Commission.
See the attached document for more information about the development of NOVICE.
WAVMA has built a section for Aquatic Veterinary Medicine on the NOVICE website.
We will be able to have computer-based learning programs, web conferences, and other educational programs available on the site for our members.
We are only just getting started, but go ahead and sign up and take a look:
Nick Saint-Erne
WAVMA Newsletter Editor
Saint-Erne@Q.com
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Class of 2001
Got to check out the old name board of veterinary graduates. So many years have passed that this board has been taken off the wall for storage! I’m pointing to my name.
Savvy students
Today I will be attending and presenting at Murdoch Veterinary Business Management Association with the conference theme, “Finding your niche.”
This is a student initiative because they realise that there is more to veterinary medicine than the technical skills gained from the (now) 6 year course. Interpersonal skills, business skills, interview techniques are just some of the things that most of the older graduates would only have stumbled upon post-graduation. I am very impressed and honoured to be invited to speak with the students today.
Super bugs
It happens a lot in the field of fish medicine as well.
From today’s West Australian…
Assessing male fertility in prawns.
Male fertility in a number of animals are usually assessed by microscopic analysis of the number, motility and shape of spermatozoa. However, in the case of this prawn, more sophisticated means may be necessary.
| Aquaculture | |||||||||||||||||
| Volume 341, Number 5 (March 2012) | |||||||||||||||||
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A novel approach to evaluate the relationship between measures of male fertility and egg fertilization in Penaeus monodon | ||||||||||||||||
| Authors: | Stuart J. Arnold, Greg J. Coman, Charis Burridge, Min Rao | ||||||||||||||||
| Author Affiliations: |
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| Source: | Aquaculture, Volume 341, Number 5 (March 2012) | ||||||||||||||||
| Page Numbers: | 181 – 189 | ||||||||||||||||
| Available Full Text: |
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| Abstract: | Discriminating the male influence on egg fertilization in Penaeus monodonis needed so that accurate measures of male fertility can be developed and subsequently used to evaluate methods aimed at improving fertility. In this study, we employed a novel, pairwise comparison approach to discriminating the fertilization influence of males: female broodstock were artificially inseminated with one spermatophore each from a pair of males. We achieved 22 successful ‘spawnings’ involving selected pairs from 33 males, and estimated the proportion of embryos fertilized by each paired male by individual genotyping of embryos. The non-inseminated, ‘twin’ spermatophore was used to estimate measures of male fertility; sperm number and the number of normal sperm of each inseminated spermatophore. Relationships between measures of male fertility and egg fertilization were then evaluated. Using this approach we were able to show that the egg fertilization potential of males could not be determined simply by total sperm number or the number of normal sperm (as determined by gross morphology under light microscopy). We also found extremely high variability in fertilization between paired males. The results highlighted male infertility issues (e.g. sperm viability) that are not simply overcome by greater sperm numbers. Our novel approach provides a method that can be used to determine whether more complex measures of male fertility can reliably predict egg fertilization potential. | ||||||||||||||||
| Citation: | Stuart J. Arnold, Greg J. Coman, Charis Burridge, Min Rao . A novel approach to evaluate the relationship between measures of male fertility and egg fertilization in Penaeus monodon. Aquaculture, Volume 341, Number 5 (March 2012), pp. 181-189, <http://ejournals.ebsco.com/direct.asp?ArticleID=4E9BBA60948ECD2BB5E8> | ||||||||||||||||
| URL: | http://ejournals.ebsco.com/direct.asp?ArticleID=4E9BBA60948ECD2BB5E8 | ||||||||||||||||
How do euryhaline fish cope with changes in salinity?
When I was working in Tasmania, every year around spring time, fish farmers will be gearing up to move their fish from the freshwater ponds to the sea. How do you know when they’re ready? Visually, they will start to lose their parr marks, turning a wholly more silver colour.
When this happens, a random sample of fish are placed in seawater ponds for a ‘challenge’ trial. These fish are then taken to the lab and
we would take blood samples from salmon to check whether they were ready to go to sea. We would test their blood for any elevations in blood sodium or blood chloride. If they are able maintain these parameters within their normal reference range, then it means that the fish are ready to be trucked to sea cages. If not, then the fish are held back till they are ready.
But how does this affect the fish’s acid-base balance ? This paper tells us a little more…
| Aquaculture | |||||||||||||||||
| Volume 341, Number 5 (March 2012) | |||||||||||||||||
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The effect of environmental salinity on H+efflux in the euryhaline barramundi (Lates calcarifer) | ||||||||||||||||
| Authors: | J.C. Weakley, J.B. Claiborne, K.A. Hyndman, S.L. Edwards | ||||||||||||||||
| Author Affiliations: |
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| Source: | Aquaculture, Volume 341, Number 5 (March 2012) | ||||||||||||||||
| Page Numbers: | 190 – 196 | ||||||||||||||||
| Available Full Text: |
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| Abstract: | Euryhaline fishes such as the barramundi (Lates calcarifer), have the physiological ability to move between waters of various salinities and are often exposed to rapid changes in ionic gradients that may alter acid–base homeostasis. It has recently been proposed that these species may utilize gill H+ATPase and Na+/H+exchanger mechanisms to regulate systemic pH, and that the differential expression of the acid/base relevant transporters is governed by environmental salinity. This study examined acid–base regulation in juvenile barramundi adapted to fresh, brackish, or salt water (ranging from 0 to 32ppt) and exposed to 1% environmental hypercapnia. Our findings suggest that barramundi increase net acid excretion in all salinities tested, with a more rapid response observed in fish adapted 22,5 and 32ppt. In contrast, the relative change in net H+transfers was greatest in the groups adapted to the lower salinities. Fish in 15ppt exhibited an apparent relationship between increased in net H+excretion and increases in branchial H+ATPase protein expression. | ||||||||||||||||
| Citation: | J.C. Weakley, J.B. Claiborne, K.A. Hyndman, S.L. Edwards . The effect of environmental salinity on H+efflux in the euryhaline barramundi (Lates calcarifer). Aquaculture, Volume 341, Number 5 (March 2012), pp. 190-196, ; | ||||||||||||||||
| URL: | http://ejournals.ebsco.com/direct.asp?ArticleID=4209B784BA6F79B35F3F | ||||||||||||||||
Artemia might be a better diet for seahorses than mysids.
| Journal of the World Aquaculture Society | |||||||||||||||||
| Volume 43, Number 2 (April 2012) | |||||||||||||||||
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Effect of Different Live Prey on Spawning Quality of Short-Snouted Seahorse, Hippocampus hippocampus(Linnaeus, 1758) | ||||||||||||||||
| Authors: | Francisco Otero-Ferrer 1, Lucía Molina 1, Juan Socorro 1, Hipólito Fernández-Palacios 1, Marisol Izquierdo 1, Rogelio Herrera 2 | ||||||||||||||||
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| Source: | Journal of the World Aquaculture Society, Volume 43, Number 2 (April 2012) | ||||||||||||||||
| Page Numbers: | 174 – 186 | ||||||||||||||||
| Available Full Text: |
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| Abstract: | The importance of a suitable diet for reproduction has been recognized as one of the major factors in ornamental aquaculture. In seahorses, mysids have been described as preys in the wild. Also, Artemiahas been usually employed for rearing fish, including syngnathids. Therefore, the aim of this work was to evaluate the effect of these live preys on the spawning quality of Hippocampus hippocampus. After 108 d, no differences were found in adults concerning all biological parameters evaluated, but broodstock fed on mysids showed better results than Artemiaregarding number of spawning events (12 vs. 3), brood sizes (233.50 ± 59.04 vs. 68.00 ± 57.97 juveniles), and newborn seahorses standard length (10.61 ± 0.64 vs. 8.75 ± 1.32 mm). The better nutritional quality of mysids, overall in Docosahexanoic acid, could be one of the main responsible factors. However, mysids stock is conditioned by natural catches and rearing techniques are little known. Another alternative would be to combine them with Artemiain mixed diet. Further research must be done concerning mysids breeding techniques to delineate their employment as a sustainable prey for seahorse aquaculture. This trial showed for the first time the effect of mysids to enhance reproduction efficiency in H. hippocampus. | ||||||||||||||||
| Citation: | Francisco Otero-Ferrer, Lucía Molina, Juan Socorro, Hipólito Fernández-Palacios, Marisol Izquierdo, Rogelio Herrera . Effect of Different Live Prey on Spawning Quality of Short-Snouted Seahorse, Hippocampus hippocampus(Linnaeus, 1758). Journal of the World Aquaculture Society, Volume 43, Number 2 (April 2012), pp. 174-186, <http://ejournals.ebsco.com/direct.asp?ArticleID=4760ACA8206F4F758276> | ||||||||||||||||
| URL: | http://ejournals.ebsco.com/direct.asp?ArticleID=4760ACA8206F4F758276 | ||||||||||||||||
Koi Society of WA show
KSWA ANNUAL KOI SHOW 2012
CANNINGTON GREYHOUNDS
(ENTRY OF STATION STREET)
SUNDAY 27TH MAY
10:00AM—3:30PM