During the scenic tour via the jungle of the national Park Khao Lak Lamru we took a seat to hinge on the rocks in one of the coves by the sea. Out of the edge of my eye I saw some movement at the much rock by the water.
Any whether a worm, or a leech, scared by my motion, formed U-shaped as well as suddenly jumped in the direction of the water. Very carefully looked around, yet there all the stones are covered with these microorganisms. And also these aren’t leeches, they are genuine fish, with a tail as well as fins!
They stretched on the stone, holding on to his abdomen and also mouth, corrected the alignment of the fins, and also in instance of threat dramatically and also aiming jump, and not necessarily in the water, and often with a stone.
A fast search on the web gave both competitors: the Rock jumper (lat. Alticus saliens) as well as the Pacific leaping dog (lat. Alticus arnoldorum), both from the household Sobakevich team okuneobraznyh. Those are a few of the fish, that can absolutely be called the land.
Rock jumper (lat. Alticus saliens) is a marine fish of the household Sobakevich team okuneobraznyh. Total body length is not more than 10 centimeters Into the dorsal fin of the spiny 14 as well as 21-23 soft rays in the rectal — — 2 25-27 prickly as well as soft in the pectoral fins to 15 soft rays.
Tropical demersal(bottom)fish. Widespread in the Indo-Pacific area from the red sea to Society Islands, North to Ryukyu Islands and Buninskih Islands, South to Queensland (Australia) and also Mariana Islands in Micronesia. Populates coastal shallow waters of the littoral and also in the area of zapisov (supralittoral) amongst rocks and stones near coral reefs at depths to 2 m During low trend the remains out of the water, with amazing agility leaping and running on completely dry rocks and rocks. While out on the water able to breathe atmospheric air.
Coastal eats algae and also sediment. At the time of generating pairs.
Adhesive eggs ladies stocked the nest, nestled amongst the coastal rocks. Pacific leaping pet kind of elevations Alticus arnoldorum is really fish. All his life this family member Sobakevich spends on coastal rocks, leaping from rock to rock and feeding on algae and sediment.»
«Researchers from the proving ground of evolution and wild animals ecology at the University of South Wales invested a lot of time on the tropical island of GUAM, while observing the way of lives and habits of « pets. » « This fish populates the rough intertidal area, says biologist Dr. Terry Ord(Dr Terry Ord). For scientific research it is intriguing because it provides an unique photo of just how was the negotiation of the land in the process of»
biological evolution. » In an article published by researchers in the journal Animal Behaviour, reveals that in the advancement of the sushi sea animals encountered many problems, including changing the diet regimen, adjustment to temperatures, dry air environment, new approaches of transportation and so on. However, unique attention was paid to researchers the capacity to resist the predators that have already understood the new setting.
From fish whose body size does not go beyond 8 centimeters, there are several enemies: birds, crabs and also reptiles. To survive in irregular pet environment enables the colour, which flawlessly hides a jumping pet dog brown amongst the seaside stones.
Practical study of the role of pigmentation for the survival of fish was given with the aid of the experiment. Initially, researchers determined the colour of five different populations and contrasted them with the color of the rocks, which was inhabited by a jumping canine. Then, on the basis of the gotten data was made practical plasticine models, among which was placed in a native environment for animals, as well as one more spread on the sand along the shore.
« « The colors and tones of each of the 5 populations nearly flawlessly match the rocks on which they live, — — states the researcher —. — Camouflage makes the fish unseen to killers»»
In a few days, the researchers returned all the dummies back to the lab as well as started to examine their condition. As expected, only those versions whose shade did not match the background, was covered with many bites, tweaks and scratches inflicted by killers.
According to Dr. Horde, leaping pets can see the procedure of evolution first hand, since not all members of the family Sobakevich reside in the littoral zone: there are an entirely aquatic species.
Contrasting the varieties that are the closest loved ones of the Alticus arnoldorum, the researchers had the ability to recognize the color characteristics inherent in the usual forefather of altitudes, which subsequently validated his accessibility attribute of camouflage.
« These fish can be contrasted to the specific frameworks out of the movie called « Evolution,» the scientist said. — — Our study has actually shown that by such functions as concealing the shade established during the habitat under water, prior to the fish made it to land»».
Scientists from the University of New South Wales in Australia found that the initial fish that strolled ashore more than 350 million years earlier, was not the only one. In one family of a number of loads types individually from each various other established the capability to move on land. A huge duty was played by the trends. A research published in the journal Evolution.
Biologists have actually studied clinical job to find the fish have the ability to go on land. They have actually recognized 130 varieties of pets, among them the American eel (Anguilla rostrata), which can crawl from fish pond to pond, bull-Buffalo (Taurulus bubalis), leaving the coastal waters by reducing the focus of oxygen in them, as well as mudskipper (Periophthalmus barbarous), lead an aquatic lifestyle.
The outcomes of the research showed that 33 different families of fish contend the very least one agent that can time to be on the land. This suggests that this capability evolved separately a number of times, and also some modern fish have acquired it from a common ancestor that lived fairly recently.
One of the families has actually obtained unique attention of researchers. Sobachkoy (Blenniidae) is a team of fish that mainly inhabit seaside waters. This family consists of seven species, which have the ability to proceed land. Alticus arnoldorum can jump on rocks as well as stick to the rocks that can he due to the presence of unique cupped fins. — — Alticus saliens — — leads a comparable way of life and like its cousin, it remains on land throughout low tide.
Scientists think that the ability to proceed the ground usually happens in the littoral area, which is a section of the shore that are regularly swamped during high tide. Litoral is a type of springboard for the steady development of terrestrial varieties.
