Yellow apple snail appears in high density and damages summer-autumn rice. Mr. Le Xuan Tu, Director of the Sub-Department of Cultivation and Plant Protection said that the yellow apple snail harms the newly sown rice stage, greatly affecting the growth and development of rice plants, if high density can make 100% loss of trees in the field. In order to minimize the damage caused by yellow apple snail, farmers need to apply a combination of manual measures and chemical measures to increase the effectiveness of killing snails. When the density of snails is high, snails are small, in order to thoroughly limit harmful yellow apple snails, people use drugs with active ingredients, such as Metaldehyde, Niclosamide to eradicate. Dosage according to the manufacturer’s instructions on the packaging. People should note that when using the drug, it is necessary to maintain the water level from 3-5cm to prevent high efficiency; Spray in the early morning or late afternoon because this is the time when snails are most active. Pesticides to prevent snails are often toxic to aquatic animals, so they should only be used when the snail density is high, avoiding use in rice and fish fields. In addition, other objects are causing harm with an increasing trend, such as: rats harming 71.2 hectares, leaf rollers 60 hectares, acacia caterpillars 50.2 hectares, thrips 36 hectares…. The Sub-department recommends that farmers keep a close eye on the fields, closely monitor the situation of harmful effects, proactively implement timely and effective prevention measures.

In addition to the name Cano Cristales given by explorer Andres Hurtado in 1980, the river is also known by tourists with many different names such as “rainbow river” or “river of five colors”. (Photo: Unsual Palace) (Photo: RCN Radio) At the time of the change of seasons of the year, this river will bring different colors such as red, yellow, green, blue, black, creating a magical and rare scene in the land of South America. These colors stand out against the yellow background of the sand in the riverbed, the green of the moss, the water and the dark patches from the rock holes that have given this river its beautiful name. This unique color is produced during the reproduction of aquatic plants in the river, scientifically known as Macarenia Clavigera, a species of river algae Podostemaceae. (Photo: El Tiempo) (Photo: Wiki Travel) This aquatic plant is the reason why the river is sometimes green, sometimes it turns bright red, orange yellow and even dark brown. The outstanding colors have created an interesting picture of nature that makes those who come here and witness this scene first-hand, surprised and admire the magic of nature. Locals say the best time to observe aquatic species is after a storm, when their colors are at their most vibrant. (Photo: Time of India) (Image: Getty Images) The Cano Cristales River is located in a rather remote area and is almost completely isolated from the outside. Therefore, this river still retains its wild and poetic beauty. (Photo: Zen.yandex) (Photo: Traveler) Besides admiring the strange scenery of the river, visitors here are also attracted by the rich flora and fauna. Serrania de la Macarena National Park is home to more than 400 species of birds and many rare animals such as turtles, iguanas and aguilas – birds are the national symbol of Colombia. Every year, this place welcomes millions of visitors. However, the Cano Cristales River only accepts visitors from June to December. From January to May, this area will be closed to let the ecosystem here “rest” and preserve.

We all know the ancestors of whales are small land mammals, after starting to live in the ocean, they went through more than 50 million years of evolution and eventually became a family of marine mammals. have the most diverse and popular breasts today. The whale suborder includes not only giant blue whales, sperm whales, and bowhead whales, but also many different species of dolphins. Species in the suborder whales still exist on Earth today. The “whale” Pakicetus is one of the earliest known ancient whales, this animal that lived 50 million years ago looked like a dog with long limbs and fur. If you look closely at the Pakicetus whale, you will see that its nose is located in the front of the head, like today’s mammals. Because the nostrils of Pakicetus whales are located in front of the mouth, when swimming they will look like dogs today because underwater, they have to almost raise their heads out of the water when swimming. Pakicetus is an extinct genus of cetacea, found in Pre-Eocene rocks in Pakistan. The strata where the fossils were found were then part of the coastal Tethys Sea. .As the ancient whales gradually entered the ocean, their body structure began to evolve in a way that was adapted to aquatic life, including the position of the neck, the nostrils gradually moving to the top of the head, Below are pictures of the primitive whale (Protocetus) and a restored image of the Basilosaurus whale, both of which show their nostrils gradually turning upward. Protocetus is one of the most ancient whale genera, which lived in the middle of the Meridian period 45 million years ago near Cairo, Egypt. It was one of the first genera of whales to have fully adapted to aquatic habitats. They are quite small, only about 2.5 m long, on the body still keep the traces of limbs with fingers connected by swimming membranes with the hind limbs smaller than the front limbs. Jaws long, with sharp teeth. The front teeth are used to catch prey and the back teeth are used to cut meat. Unlike the older predecessor Pakicetus, which lived a semi-aquatic lifestyle, Protocetus was able to develop ear canals and hear underwater sounds (but it is unclear whether they developed sonar or sonar). not yet) and developed a flattened tail like today’s whales. Their nostrils are still located on the head, they still do not have a stoma on the top of the head and rely more on eyesight for food. Basilosaurus is one of the primitive whales that evolved from land mammals and later evolved into modern day whales. Basilosaurus averaged about 18 – 20 m long and weighed about 15 tons, once distributed in North America, North Africa and Central Asia and was considered the largest animal that ever lived in its time. The ancient whale species mentioned above all belong to the ancient whale suborder, the baleen whales and the toothed whales in the ocean today all evolved from the ancient whale suborder. They appeared in the middle Oligocene, about 30 million years ago. Compared to today’s whales, their appearance is quite similar to ancient whales, but the evolution to change the position of the nostrils took quite a long time – about 20 million years. Diagram of the evolution of ancient whales. Schematic diagram of the evolution of modern whales. Modern whales have evolved to move the nostrils from the front of the mouth to the top of the head. It’s not just a change of location. The esophagus and trachea of ​​today’s terrestrial mammals are interconnected, so if our noses are blocked by a cold, we can still use our mouths to breathe instead of our nostrils. In addition to breathing, our nose also has the function of smelling. But modern whales are different, and the changes in the position of the nostrils and the changes they made to aquatic life have caused the trachea and esophagus to separate. The nostrils connect to the lungs and the esophagus connects to the digestive system, so their noses are only used for breathing, not for smelling. The nostrils of modern whales located at the top of the head actually help them survive more effectively and safely than the holes in the front of the mouth when in the ocean. But even if their nostrils are at the top of their heads, when they dive into the ocean, their noses are still underwater, how can modern whales ensure that they won’t choke? In fact, under the nostrils of whales have a very strong muscle group, they can completely close their nostrils when diving, avoiding the risk of choking on water. The separation of the esophagus and trachea also ensures that modern whales will not choke on water while hunting in the ocean. Large nostrils of baleen whales. The nostrils of a blue whale when diving into the water. In fact, all baleen whales still have two nostrils, while toothed whales have only one. The jets that whales spit out of the water are not water in their noses, but rather accumulations of water remaining in the “pits” of the nostrils, which are formed under the action of sub-lower pressure. Ocean. This prevents water from entering the nostrils, improving the safety and efficiency of breathing. However, the water column due to the whale’s breathing process once brought them great danger. In the era of whaling, sailors often relied on these water columns to locate the schools of fish. elephants. Killer whales belong to the toothed whale subspecies with only one nostril. Gray whales belong to the subspecies of baleen whales that spray water with a pair of nostrils.

An eel weighing several kilograms or more is normal. The bigger the fish, the better the meat, the more fat the belly is. The writer of this article has an unforgettable memory of eels. It was time to a fishing port to write articles. Before leaving, the director hung in my car a sandbag “a little homegrown plant as a gift for my sister”. When I got home, I just packed seafood, reminded my “sister” to do the kitchen, and then took a shower. While taking a shower, I suddenly heard a loud scream from behind the kitchen, and when I ran out, my wife had already passed out. How could she not faint when she had just unpacked the sandbag when a striped sea eel the size of a small python was squirming wildly! This eel weighs up to 13kg. The eel hotpot is delicious! About the strength and longevity of the eel, writer Buu Y describes: “The fish is very scary, at night he crawls ashore and then goes to the cage to catch chicks. Households near the river are experienced in catching fish. At night, every time I hear the chicken behind the coop, I know he is coming up, he crawls like a snake, but according to a rule, he crawls down that way, so people guard his way and sprinkle a lot of ashes, that’s when down, it fell into the ash nest, just lying in one place, no way to move.” Eel meat is tough, so in the countryside, women often slice rim with turmeric. This dish is great with hot red rice! At the restaurant, people often stir-fry eel with mushrooms (shiitake mushrooms, cat mushrooms, termite mushrooms) with onions, skull pepper… it’s very painful. Grilled eel dipped in ginger fish sauce or braised with acrid banana is also good. As for the eel hot pot, don’t say, the fresh water is dark, when it’s hot and sweaty, it’s already… According to architect Nguyen Trong Huan, in the list of fish, eel must be listed at the top. Also according to him, enjoying the right eel must be accompanied by the wine of Chuon village, the first famous wine in Hue.

Khanh Van’s traditional costume contest at Miss Universe Khanh Van brought to the Miss Universe pageant an Ao Dai inspired by silk weaving. On the morning of May 14 (Vietnam time), Khanh Van and the Miss Universe contestants entered the traditional costume contest. This is an indispensable part of the beauty contest. As usual, the Vietnamese representative was in the last performance group, right after the Venezuelan contestant. Khanh Van completed the exam smoothly, without making mistakes. Khanh Van performs national costume at Miss Universe. The costume Khanh Van brought to this year’s contest was named “Ken Em”, a design by the author Khoa Lo. The outfit is meant to honor Vietnam’s silk weaving. Creative designer on the background of traditional ao dai. Khoa Ho uses white tones, light materials, and marcame stringing techniques. The Cocoon Em costume has a unique opening and closing frame, so the weight is quite heavy, about 30 kg. Because of the cumbersome design, the correct assembly and confident performance is also a challenge for Khanh Van. According to the behind-the-scenes photos shared by the crew, before the contest, the beauty assembled the outfit herself. Khanh Van’s costume is made entirely of white, so under the spotlight, the design is a bit “submerged” in terms of visual effects. Meanwhile, most of the contestants’ designs used striking and eye-catching colors. Asian countries such as Thailand, Laos, Malaysia, Myanmar… still invest heavily in traditional costumes. Miss Thailand, Amanda Obdam, brought on the stage of Miss Universe a costume inspired by fighting fish – the fish chosen as the national aquatic species. Miss Universe contestants compete in national costume. The performance of the Malaysian representative took up the most time. The Malaysian beauty brought a model house on stage and needed 3 people to support. Not only that, she also changed her outfit, making the contestants performing behind them have to wait. Some other contestants like Singapore or Ukraine convey meaningful messages through traditional costumes such as stop violence, stop discriminating against Asians… After this round, 74 beauties will prepare for the semi-final night, which will take place on the morning of May 15 (Vietnam time).

Carp are raised on the island Playing aquarium fish is an old hobby. Images of colorful fish of all kinds swimming in lakes, miniatures, and rockeries always bring players relaxation and mental comfort. Currently, the hobby of aquarium fish has become popular, aquarists of many different ages. Everyone can own an aquarium that suits their income and interests. According to aquarium store owners, there are many varieties of ornamental fish from freshwater fish to saltwater fish, from popular and easy-to-raise fish, such as three-tailed goldfish, Siamese fish, guppies, and fish. average fish, swordtail… to precious fish with high selling price, but very difficult to take care of, such as: arowana, Koi carp, Arhat fish, poinsettia… In addition, there are modern machinery and equipment that support the care of simple aquariums to aquariums, or higher is the rockery, with underwater decorations, light bulbs. Led, oxygen blower, waste collector, aquatic plants … and many different types of aquariums, large and small fish tanks, to meet the needs of aquarists. Mr. Nguyen Van Huu (a longtime ornamental fish farmer in Chau Doc City) said that raising ornamental fish is not difficult, easy nor easy, but requires the passion, knowledge and experience of the farmers. To raise ornamental fish, the source of water for fish farming is the most important factor. In an aquarium, it is necessary to choose fish with the same behavior that are easy to keep together, avoiding big fish eating small fish. Besides, it is advisable to feed the fish just enough, not to leave excess food, to avoid overeating, which affects the water quality in the aquarium. Should not completely replace the old water, should suck the old water from 30-50% and add new water slowly, gently for the fish to adapt. “Farming aquarium fish is not only to decorate the space of the house with fresh, fresh vitality and closeness to nature, but also to help dispel the feelings of fatigue and daily worries of daily life. day” – Mr. Huu shared. Tran Dang Khoa (living in Phu Tan district, An Giang province) said that he loves to raise ornamental fish. Because I’m going to school and living in a boarding house, I choose to raise small fish, easy to raise and affordable, such as: guppies, lily fish, three-tailed fish, pomegranate fish… Daily, the care squirrels and watching schools of fish swimming help Dang Khoa to relax after studying in the lecture hall. Mr. Le Quang Vinh (living in Chau Doc City, An Giang province) shared that he did not know how to raise ornamental fish before. But since seeing some friends make rockeries, raising fish in the house is so beautiful, so he practiced raising them, gradually becoming a passion. At the beginning of the aquarium, he raised cheap fish, after gaining experience, he raised more expensive fish. “The rockery is decorated with a variety of aquatic plants combined with rocks and colorful fish to create a small fresh and cool space in our house,” Vinh shared. Like Mr. Vinh, who has a hobby and passion for playing ornamental fish for many years, Mr. Le Van Hoang (living in Tan Chau town, An Giang province) has researched and invested in an aquarium. born. According to Mr. Hoang, aquariums have many types, styles and ways of playing. Simple aquariums are often decorated with a variety of aquatic plants, such as: water ferns, chrysanthemums… combined with rocks, driftwood and schools of zebrafish, guppies, Dutch fish… creating creating a scene like an aquarium. One of the joys of keeping aquarium fish is to bring the whole space to simulate nature in miniature in an aquarium. “Every day, sitting and listening to the sound of the water flowing, watching the fish swim around, melt away all the fatigue and worries, help people’s mood become more peaceful, mentally comfortable and happier.” Hoang shared.

Hydropower dams can negatively impact the environment. More harm than good? Bach Hac Than Hydropower Plant officially stored water when the second bottom outlet closed on April 6. This means that the world’s second largest hydroelectric project has taken an important step towards its power generation goal on July 1. With the discharge door closed, the reservoir water level begins to rise and will reach 775 meters by mid-June. As a result, generation conditions are met. From August to September, the water in the lake will be stored up to 800 meters and then 825 meters in June 2022. The total storage capacity of the Bach Hac Than dam will be 20.627 billion cubic meters, accounting for 91% of the Kim Sa river basin. This is an important part of the Yangtze River flood control system, which has a capacity of 7.5 billion cubic meters. The total installed capacity of this second-ranked power plant in the world is 16 million KW. The capacity of a world-leading unit is 1 million kilowatts. New electricity will help China achieve its carbon neutralization goal. The Bach Hac Than Hydropower Station is an important part of the flood control system in the Yangtze River basin. At the same time, Bach Hac Than is a landmark project in the development of the global hydropower industry. However, while some people give information about clean energy of hydroelectricity, many argue that it can cause immeasurable damage to biodiversity, soil erosion, loss of archaeological and cultural sites. Even more than a million people will have to be relocated. Although the government has yet to reveal a detailed approach to meet the target of achieving carbon neutralization by 2060, hydropower has been featured in the 5-year plan 2021 – 2025 as well as vision 2035. Both were approved by China’s top legislature in March. In those plans, the government stated its intention to “step up the construction of hydroelectric facilities in southwestern China”. At the same time, promote wind energy and solar energy. “The dams will be a solid support to China’s energy industry and reduce carbon emissions. The construction of hydropower plants can bring benefits to irrigation, shipping and power generation, with great socio-economic value, ”said Professor Lu Qiang of Tsinghua University. Lin Boqiang, head of the Xiamen University’s China Energy Policy Research Institute, said the country is set to expand hydroelectric capacity. Because, water is the cheapest clean energy that can be used stably. “The dam construction is still controversial in China because of environmental concerns. However, the objection is no longer as strong as before, because the need to achieve carbon neutralization is increasingly urgent, ”said Mr. Lin. China’s dam construction activity began in the 1950s and has accelerated over the past two decades. At the end of 2018, Chinese hydroelectricity had a capacity of 352GW, accounting for 28% of the total global capacity and more than three times that of any other country. Heavy impact The Bai Hac Than Dam is worth 170 billion yuan ($ 26 billion) on the Jinsha River (Yangtze), in Sichuan province. The dam has made many people admire for the speed of its construction. China only took four years to build, despite the rugged terrain and far away, with the help of artificial intelligence technology. The Bai Hac Than emergency construction reflects the acceleration in China’s plan to expand hydroelectric capacity as a source of renewable energy. By the time Bach Hac Than reaches full capacity by the end of next year, China will be a country with five out of the 10 largest hydroelectric plants in the world. That pace of development has raised concerns about the impact of hydropower dams. China Green Development and Biodiversity Conservation said it is closely monitoring new dam construction projects. “It has been shown that dam construction harms the ecosystem and affects the habitat of wildlife,” said Wang Jing, a spokesman for the organization. We are concerned that some places will increase the development of hydropower projects to serve the government’s goal of carbon neutral ”. According to Fan Xiao, geologist and chief engineer of the Sichuan Department of Geology and Minerals, dams have a negative impact on the local ecological environment. Especially for aquatic animal biodiversity. They slow down the water flow rate and reduce the volume and purity of the water, Fan said. From there, it destroys the habitats of aquatic animals and hinders fish migration. Chinese scientists in 2019 announced the extinction of paddle fish. It is one of the largest freshwater fish in the world. They are also known as Chinese swordfish, with a length of 7 meters. This fish is believed to have gone extinct from 2005 – 2010. The construction of the Cat Chau Ba dam on the Yangtze River since the 1970s has been a major contributor to this species’ decline, researchers found, by preventing fish from reaching their only breeding ground. upstream. According to the scientists, the river system is in trouble containing more than 4,000 aquatic species. However, dam construction, overfishing, water traffic and pollution have caused a lot of damage, with fish stocks declining and biodiversity rapidly declining. Mr. Fan said that building more hydroelectric plants is not the best way to reduce carbon emissions. “Water is a kind of clean energy, but we cannot ignore the huge carbon emissions generated by dam construction, excavation and migration,” warns the expert.

Gold and platinum materials are both found in cafeterias, decks, balustrades, stairs and anchors. Meanwhile in the master bedroom there is a statue made from the bones of T-Rex Tyrannosaurus. If these are not enough to see the luxury of this yacht, the 68-kg Aquavista Panoramic Wall is covered with 24-carat gold and a rare 18.5-carat diamond-studded luxury wine bottle will be smart. most evident. In the summer of 2011, Stuart Hughes, a design unit in the UK, said it had been tasked with crafting a yacht called History Supreme. Hughes stated on his website that the yacht was purchased by a Malaysian businessman for $ 4.8 billion. 100,000 kilograms of monolithic gold and platinum were expected to be used on this project at that time. The railing and the anchor are even made of precious metal. At $ 4.8 billion, the story quickly spread by the media. However, the Italian-based Baia Yachts brand was quick to refute this information, claiming Hughes used the company’s image to turn it into his own idea. Sheet Business Insider once believed that the billionaire bought this yacht was Robert Kuok, but later discovered that the businessman had a net worth of up to $ 12.5 billion. He renovated his Hong Kong mansion to avoid flaunting his wealth, not the behavior of someone willing to spend $ 4.8 billion on an expensive luxury yacht. Kuok is also the richest of the three billionaires with a net worth of over $ 5 billion in Malaysia, so the figure of $ 4.8 billion for a yacht is still very different. Business Insider Also spent a few questions for representatives of Stuart Hughes to verify the above information, but what they received is only weak feedback from this unit. Baia Yachts sales manager Mario Borselli said: “Who can believe a ship carries hundreds of tons of gold? They took pictures from our website without permission.” This gold-plated yacht is also more luxurious than the $ 1.2 billion Eclipse superyacht of Russian billionaire Roman Abramovich, equipped with both missile defense systems and submarines worth $ 450 million. This may be just a trick to polish the name of Stuart Hughes and the media did not verify the source before a series of newspapers reported on this yacht model. Anyway, the name History Supreme has almost become a “legend” of the yachting industry despite not taking into account reality. When asked which is the most expensive yacht, perhaps History Supreme will still be most interested in.

Aquarium or aquatic shrimp is a common term for many types of shrimp. With a size slightly larger than the tip of a toothpick, the shrimp have many different names such as red cherry, bee, tiger, Kinh kong, red nose, white dot, green, yellow pumpkin … depending on the type.

This ornamental creature has a colorful appearance, eats vegetables in a glass tank, cleans the environment, so it easily “attracts” many players. Most of the common types of shrimp in Vietnam are originated from Japan, Taiwan, Indonesia …

Although ornamental shrimp is popular, it is quite “picky” for farmers because the life expectancy of this species is very low, susceptible to disease and highly contagious. At the same time, breeding shrimps requires farmers to have high technical skills.

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Mr. Le Tuan Anh (Ha Huy Tap ward, Ha Tinh city) revealed: Shrimps are sensitive to weather, food, water and light so players need to be very clear about their pathology, closely monitor abnormalities to avoid them falling ill.

The most important factor for the beautiful color and healthy life of the shrimp is the water quality.

If you see shrimps swimming weak, lethargic need to change the water immediately. If there is discoloration or fading in the aquarium shrimp, the water quality is deteriorating. (In the photo are kinds of shrimp that are quite easy to live like: RC red shrimp, Chocolate shrimp, Blue Dream …)

In the summer, players of ornamental shrimp in Ha Tinh also struggle to maintain the ideal temperature because most of the ornamental shrimp lines prefer cool temperatures. At temperatures higher than 28 degrees Celsius, shrimp will not be able to lay eggs, even fading.

In order to maintain the ideal living environment for shrimp, players also have to invest in some additional tools such as filtration system, projector lamp, background distribution, cooling fan, PH meter, thermometer …

Shrimps are omnivores that do not require special food. In addition to algae, harmful algae, and plant foods, players can also add some specialized foods.

The cost of shrimp depends on the type, pattern, color of the shell and its rarity. The most popular and affordable one is the Red cherry (cherry shrimp) about 20 to 50,000 VND / pair. More expensive, there are types of yellow shrimp, black shrimp, Kingkong, Panda, Red Ruby … from 100,000 VND to several million / animal. In particular, there are types of hybrids, mutant shrimp that are offered for tens of millions of dong.

Although the hobby of playing shrimp is a bit fussy, with many people taking care and cherishing each small shrimp becomes a hobby. Mr. Nguyen Cao Cuong (Bac Ha ward, Ha Tinh city) shared: “After a long and hard day, the time I spent watching the shrimps brought me a feeling of comfort. Taking care of shrimp also trains me to be patient, because it is difficult to be impatient and impatient to control the care of the tank and keep the shrimp ”.