The scientist describes the first use of colored rocks in the fish nest


Credits: Brian Hickey

The interior of the fish world may be the interior decorator of small fish species that inhabit the stream.


In Canada, Ontario, Canada, Andy Bamberger, Canada's researchers at the University of Minnesota Duluth's Natural Resources Research Institute found that men's fibers are carefully applied to darker and more saturated than the flow of round shaped nests. The researchers noticed the flow of regular research and were surprised if they were responsible for the color of the fish.

Their results were published Journal of fish biology.

Along with several students, Bramberger and Brian Hickey, from the Institute of Environmental Sciences, St. Lawrence River Institute, which at the time of closure in April opens a recently built mineral tissue. Since the eggs had hatched and men's cutlip minnows – who build and follow the nests and juveniles left the flow, the researchers collected the seeds from the nest sites as well as background areas streambed. They used digital cameras and image analysis to extend the wavelength, color intensity, and the shine and brightness of the similar size shrubs.

The researchers found that:

  • Men's cutlip minnows choose rocks that are darker and more color saturated than other rocks stream, leading to the nests that contrast dramatically compared to the drab background;
  • The nest of the nest is noteworthy on the wavelength of 4 nanometers, which means that the sharp pressure of men has a sharp effect on the use of specific colored rocks, namely in the form of orange layer.

"Cutlip minnows have specialized, three lobed lower jaws that they use to pick up and exercise to run the nests," said Bramburger. "This means that the nests are made up of uniform sizes, we must make sure that differences in the different color characteristics were not the same color as the egg function that is not the same color. Fish is surprisingly picky about the color of their nesting materials."

Bramburger adds that it is likely that all the cutlip minnows, both male and female, have developed the ability to really well in this part of the color spectrum, presumably to find food items (eg crustaceans) with orange pigmentation. Other types of enamels, men emerge from orange or red color, which during the season tend to take advantage of this sensibility and make women more attractive to women. Cutlip minnows are not special charming colors; But, over time, men's cutlip minnows who built nets that contained this color were more successful at and they were passing their genes for future generations.

"It is especially impressive that the waves of many nests are so similar," said Bramberger. "It would be an attempt to mosaics from the walls found in your yard.

So far, the research team has not been able to evaluate whether more attractive women of specific stomachs or men who build a particular color of their father are more successful, but these are future projects.

Prior to this study, the use of colored material in fish was not described. But there are many things among the birds. In particular, satin bouquet birds will usually decorate with bright blue things on the sensitive sensitivity to the blue pigments in the visual spectrum of the earth.

The fish that use colored colors such as body color or nail decoration are important to select a woman to select a spouse. Men who show the best color or build the most attractive nests are the healthy, favorable genes for the offspring.

Flood habitats are more threatening to the list and precipitation, nor can a clear lack of clear water for a woman choose the best spouse and endanger the genetic health of the fish population.

Bramburger says studies like this is important to ensure guidance for managing and conservation species species that are used in color mating.


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Მet Information:
Andrew Brumberger and others. The darkest, colorful material is the predominant composition of shrubs, Journal of fish biology (2018). DOI: 10.1111 / jfb.13741

Journal Reference:
Journal of fish biology

Provided by:
University of Minnesota