Agricultural Ecology LAB Yamagata Univ. 山形大学農業生態学分野

 Waterfowl population is becoming the concern among researcher and environmentalist. The population decrease caused by the decreasing of wetlands number. In 1971, The Ramsar Convention was adopted where many countries agree to preserve with wise of wetlands, especially for waterfowls. The agreement held in Iran and Japan one of participant. The Ramsar Convention advocates the wise use of wetland by human or industries needs in harmony with the environmental. In Oyama area, Shimo-ike was built for agricultural purpose but this lake also become habitat for more than 20.000 birds, for instance swans, wild ducks and wild geese. This reservoir meet the standard of the Ramsar Convention and registered as the first Ramsar site in Yamagata Prefecture. To access this place you can use car, public bus or bicycle. If you use bicycle like me, it will take 20-30 minute there. My recommendation, please come in the autumn time closed with the winter season as you will see many waterfowls here. Hopefu

  Black soldier flies are known to be extremely temperature-sensitive. Moreover, they are also highly sensitive to humidity as well. This variable has considerable implications on egg eclosion and hatching. Low humidity levels result in water loss through the egg membrane and additional desiccation. In a scientific paper published by L.A. Holmes, 25% relative humidity causes higher rates of desiccation and higher mortality rates on black soldier fly eggs. At 70% RH, adults lived 2-3days longer than adult black soldier flies subjected to lower RH levels. Therefore, the higher the humidity of a given environment, the higher the chances for a more successful colony. Eclosion and hatching at lower RH levels; however, is still possible. Relative humidity of 30-90% promotes mating and oviposition when eggs and larvae are reared in a 27 ° C environment. The wide range of relative humidity is indicative of Hermetia illucens ability to adapt given the temperature is consistent. In indoor reari

                                               HAZARD VS. RISK-BASED APPROACHES TO PROTECTING                             HEALTH AND ENVIRONMENT FROM PESTICIDES                                                                      April 2021     What’s the difference between a hazard and risk-based approach? These two approaches are often presented as opposing. However, this is a misrepresentation of risk management. ‘Hazard’ is the potential for a chemical (in this case a pesticide) to cause harm to human health or the environment; Risk , on the other hand , is the probability that the harmful outcome happens. Hazard cannot be separated from risk; it is an integral part of it. Pesticide risk management focuses on reducing the probability (and hence frequency), that people or the  environment will be exposed to pesticides. The hazard-based approach to pesticide regulation is founded on the principle that if an active substance possesses certain hazardous character

ジャンボタニシって面白いですよね。いや、いろいろな意味でです、研究とかもちろんですが。他にもそうそう食べると結構うまい。インドネシアに行くとね、結構食べる場面あります。焼き鳥のようにして甘いたれで食べる。それが結構うまい。在来種のタニシよりも旨いっていう人がほとんど。そうそうこれ外来種で、日本の場合は台湾からきたといわれてます。  Apple snails are very interesting snails of a variety of snails. Because of its color, shocking pink, many of us feel uncomfortable when we find these eggs in the field. In fact, they cause much damage to rice plants, and their eggs are poisonous, and there are not many consumers of these eggs. But the taste is ok. Some people say this is better than native snails. Well, the apple snails are not native, but invasive species originally from South America, but the origin of the Japanese population came from Taiwan. Anyway, you may find this eaten occasionally in Indonesia, and surely you will like it.

  Black Soldier Fly (BSF) is a kind of fly native to south America. Today, it distributes to not only America continent but also Asia, Oceania, Africa and Europe area. This fly is attractive because it consumes food waste and can be used as animal feed. It is said that one adult oviposits egg cluster including 400 to 800 eggs. Some researchers in Japan investigates how much 5 kinds of food waste, vegetable, fruit, carbohydrate such as rice, fish and meat can be consumed by BSF larvae. According to the study, vegetable, fruit and carbohydrate are suitable for food waste reduction by BSF larvae. They described that protein content of food affects the weight of larva consuming it. Actually, the result showed larvae consuming mix food containing 5 kinds of food were heavier than those consuming simple food. It is thought that it is because of low protein content in vegetable and fruit and high protein in fish and meat. アメリカミズアブは南アメリカ原産のハエの仲間です。今日では、アメリカ大陸だけでなく、アジア、オセアニア、アフリカ、ヨーロッパ地域にも分布してい

  I love sweet food when it contains palm sugar. Palm sugar is made from palm plants and is a common plant here in Indonesia. The farmers will take the sap from its plant and boiling until it thickens then put it in a shaper until it hardens. Mostly sweet food that contains palm sugar here is traditional food and all of it is delicious. I usually make it as a drink when the temperature gets colder. I will mix it with ginger and boil it as a hot good sweetness to warm your body. This sugar is considered healthier than cane sugar and a good choice as an alternative to taste sweet. My mother always buys this sugar in the traditional market and makes it mandatory supplies in the kitchen.

 Drones, which have been used in various studies in recent years and are attracting increasing attention, have finally begun to be used in my research. It helps my research to take pictures of the paddy fields from above and get a full picture of them. You can get a bird's-eye view of the paddy field, so you can see at a glance how the paddy fields are covered with snow. It is easy to operate once you get used to it, and the images from the camera are displayed in real-time at your operator device(Smart Phone), you can fly it just like playing a video game.  近年様々な研究で活用され、注目が高まっているドローンをついに私の調査でもその使用を開始しました。上空から水田を撮影し、その全貌を把握するのに一役買っています。俯瞰してみることができるので水田の積雪の様子が一目瞭然です。操作も慣れれば簡単で、手もとにリアルタイムでカメラからの映像が表示されるので、テレビゲーム感覚で飛ばすことができます。

 Good evening all. Job hunting started in earnest on March 1st today.I can now make reservations for entries and briefing sessions for each company.There are many companies, so it's hard to choose the company I want to work for.I'm also worried about whether it will work or not.However, I want to prepare well beforehand. I will be in the fourth grade in April, and my graduation research will start.I would like to make a plan and prepare for it.I want to learn how to take care of Black Soldier Fly. Thank you for the reading. 今日3月1日から就職活動が本格的にスタートしました。各企業へのエントリーや説明会の予約等ができるようになりました。沢山の企業があるので、その中から自分が働きたい企業を選ぶのは大変です。また、上手くいくかどうかの不安もあります。しかし、しっかりと準備をして臨みたいです。4月から4年生になり、卒業研究も始まります。こちらのほうも計画を立てて準備していきたいです。アメリカミズアブについて行うので世話の方法をしっかり覚えていきたいです。 writer: Mao