Kalakaamera

Kalakaamera alates 2016. Vanemaid kalakaamera postitusi vaata siit:

http://www.looduskalender.ee/taxonomy/term/63

Water stick insect in fish camera

Submitted by Looduskalender EN on Tue, 30.04.2019 - 12:40

Screencap from webcam Toivo
Estonian text posted 23.04.2019
English translation Liis

 

 

Water stick insect         Nõelhark       Ranatra linearis

 

This creature belongs to the Nepidae or Water scorpion insects, and appeared yesterday in camera view in the Võrtsjärv water meadow.

Those who move in mainland water bodies are probably more familiar with the water scorpion  Nepa cinerea with its leaf-like body. The stick water insect (see images) is seen less often .

Fish camera

Submitted by Looduskalender EN on Wed, 10.04.2019 - 23:15

Transmission provided by EENet
Introduction and illustrations Tiit Hunt, www.rmk.ee
English translation Liis

Estonian text posted 09.04.2019

We installed a fish camera in the waters on the northern shore of lake Võrtsjärv, hoping to see the activities of pikes during their spawning period. The camera is located on the bank area that is flooded by high water at a depth of about 40 cm between sedge tufts and last year’s grass where the conditions are perfect for the spawning of the pikes

Who more do we see in the spawning area?

Submitted by Looduskalender EN on Sun, 03.02.2019 - 11:54

Screencap from webcam  IceAge, LK forum

Illustrations from Wikipedia

English translation Liis

Estonian text posted 23.01.2019

 

In  the spawning area we meet spawners as well as their ”satellites”

Members of the LK forum have been interested in what small animals we can see in action in such waters. The information below is provided by Henn Timm from the Estonian University of Life Sciences:

"In the upper reaches of rivers and streams where the flow is rapid and the water is cold there is almost no plankton. The zoobenthos (the animal fauna of the bottom) is dominated by crenobiotic species (invertebrate aquatic organisms living in cold spring waters), for instance unicellular species, crustaceans, insect larvae, leeches, snails … Typical fish species are river trouts and graylings “.

Spawning period ending

Submitted by Looduskalender EN on Fri, 01.02.2019 - 11:41

Screencap from webcam  IceAge, LK forum
English translation Liis

Estonian text posted 30.01.2019

Spawning period is ending

 

River trout, Brown trout        Jõeforell or hõrnas       Salmo trutta morpha fario

 

The spawning period is coming to an end in spring-fed water bodies.

This year viewers could see in the webcam, and thanks to the low water level, even the spawning under the ice cover. Unfortunately the water turned more muddy due to the low flow rate, but such a view we have simply not seen in previous years.

VIDEO: When there are no trout in the spawning ground we see sticklebacks

Submitted by Looduskalender EN on Mon, 17.12.2018 - 10:26

Video recorded by Parabols, LK forum

English translation Liis

Estonian text posted 12.12.2018 

 

The video is a couple of years old. This year the water flow is extremely small and the water too muddy for recording a video

 

Ninespine stickleback    Luukarits    Pungitius pungitius    

 

The slim, spool-shaped sticklebacks have conspicuous spines on the back (dorsal) fin. There may be nine up to eleven of them, and in addition one on each ventral fin.

The thin peduncle or tail stem is noticeable. The lifetime of these small fish reaches up to three years. Most have a similar body length, five to six centimetres.

VIDEO: Spawn robbers on the move

Submitted by Looduskalender EN on Tue, 11.12.2018 - 13:58

Image from webcam IceAge, LK forum

Video Urmas Lettwww.een

English translation Liis

Estonian text posted 10.12.2018

The feet of three mallards are visible; they are on their way upstream to even  shallower water

Mallard         Sinikael-part       Anas platyrhynchos

 

For the first time we saw the plundering visits of mallards to the trout spawning ground three  years ago – the images were quite rare. But the sounds of ducks near the web camera at the spawning ground were heard already a year earlier.

VIDEO: How the frog met its end at the spawning place

Submitted by Looduskalender EN on Thu, 06.12.2018 - 20:50

Video recorded by Klaabar, LK forum/

English translation Liis

Estonian text posted 03.12.2018

 

The water level in the trout spawning place is really very low. The frog had probably crept into a turf at the brink, a little higher up than the spawning area to spend the winter but the cold weather and ice cover forced it to search downstream for deeper water where it would be possible to dig into the bottom mud once more …

Catching such images is not common. Wintering frogs have plenty of enemies

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