Research & Technology - Technology & Research from or relating to Koi/Fish, Tools Used

For our research minded members, what a great article on the science of genetics of the pigmentation in koi.  Enjoy!
 

From PBS, you will enjoy this scientific exploration of fossils and why there are no squids!
They recently discovered why there are octopus fossils, but no squid fossils.  Turns out that squid can retain exhaled ammonia and use it to compensate buoyancy - and because the retained ammonia changes the pH of their tissues, it doesn't fossilize at all well.  Note that it's the ammonia that Koi breath out that lowers the pH of the bag water when shipping and allows the Koi to survive. Interesting adaptations of different aquatic species and ammonia!
 

Could the ammonia in my koi pond be inviting to those pesky flies and mosquitoes?
 
The stink of ammonia in urine, sweat, and rotting meat repels humans, but many insects find ammonia alluring. Now, UConn researchers have figured out how the annoying insects smell it, a discovery that could lead to better ways to make them buzz off.
 
Odd smell: Flies sniff ammonia in a way new to science (phys.org)

A great overview of what feed ingredient alternatives are being researched as a substitute for costly fishmeal in fish feed. 
 
Discussion and research implications

Creative use of wasted flare gas to help grow microbes for fish feed. I wonder how this will look on a bag of fish food ingredients?
 
...The company plans to capture methane from flare gas in the oil-and-gas sector in Alberta and convert it on site into methanol. It will then be transported to a production facility where the methanol will feed and grow microbes in bioreactors.
 
...Later this month, the Center for Aquaculture Technology will test DeNova-treated pellets in adult Atlantic salmon completing a life-cycle evaluation of the fish.

Okay, now I am carefully looking out for red eyed carp.  Do you have one?  
 
The purpose of this study was to investigate the inheritance of red eyes in ornamental koi, a variant of Common Carp Cyprinus carpio. The study included crossing fish with different eye color phenotypes and analyzing fish segregations in progenies.
 
Gomelsky et al. 2016 NAJA 78 251-258.pdf (ksuaquaculture.org)
 
 
 

For our science minded friends!
 
...The study reveals the details of important nutrient exchanges between algae and bacteria. Such exchanges determine the functioning of microbial communities in the environment, relevant to climate change cycles and agricultural productivity. Microbial interactions within microbial communities are important on many levels, ranging from the ecology of aquatic and terrestrial food webs, to wastewater treatment. A key characteristic of the interactions within these communities is the exchange of nutrients between species.
 

Here is a great short article on that famous 226 year old koi named Hanako. 
 
 
A Japanese fish called Hanako is believed to be the longest living Koi fish ever recorded, having made it to the grand old age of 226 before her death in 1977.

The scarlet-coloured female was born in 1751 in the middle of the Tokugawa era in Japan.

Cyanobacteria May be coming soon to your pond, via the clouds!
 
Human health and ecosystems could be affected by microbes including cyanobacteria and algae that hitch rides in clouds and enter soil, lakes, oceans and other environments when it rains, according to a Rutgers co-authored study.

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