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What are the control methods for the Oriental fruit fly (Bactrocera dorsalis)?
[Morphological characteristics] The adult is 6-8 mm long with a wingspan of 16 mm, and the whole body is alternately dark black and yellow. The thorax has a total of 11 pairs of bristles, mostly yellowish-brown, including 2 pairs of scapular bristles, 2 pairs of dorsocentral bristles, 1 pair of presutural bristles, 2 pairs of postsutural bristles, 1 pair of mesopleural bristles, 1 pair of pteropleural bristles, 1 pair of prescutellar bristles, and 1 pair of scutellar bristles. The abdomen is oval, with 4 segments in males and 5 segments in females. The ovipositor is well developed, but its length is less than half of the abdomen, and the narrow posterior portion is shorter than the fifth abdominal segment. The egg is spindle-shaped, slightly pointed at one end, slightly curved, about 1 mm long and about 0.1 mm wide, milky white. Larva: the first-instar larva is 1.2-1.3 mm long, the second instar is 2.5-5.8 mm, and the third instar is 7.0-11 mm. The first-instar larva is semi-transparent, the second and third instars are milky white, and the mature larva after the third instar is orange-yellow. The body is conical, small and pointed at the front end, the mouth hooks are black, and the button-shaped structure on the inner side of the spiracular plate is relatively large and obvious. The pupa is oval, about 5 mm long and about 2.5 mm wide, light yellow.
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Pig Needle Usage Reference Chart, with Common Types and Lengths
Summary Pigs from birth to 10 kg: the commonly used needle length is 0.5-0.75 inches, and the needle gauge is 20-21. Pigs of 10-30 kg: the commonly used needle length is 0.75-1 inches, and the needle gauge is 18-19. Pigs of 30-100 kg: the commonly used needle length is 1-1.25 inches, and the needle gauge is 18.
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Key Technical Points for Fry Rearing in Yellow Catfish Aquaculture
Rearing yellow catfish fry (commonly known as "water flowers") with a body length of 1.5-1.2 cm to fry of 5-6 cm in size (known as "fire-flake fingerlings") takes about half a month. The rearing methods at this stage include pond rearing, flowing-water tank rearing and net-cage rearing. Compared with fingerling rearing
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What special-effect chemicals are used to straighten and lengthen yardlong beans
Yardlong beans are one of the popular vegetables widely cultivated in northern China, and their popularity ranks first among all kinds of vegetables. However, quite a few farmer friends report that the yardlong beans they grow are neither long nor straight, and sell poorly. So, what special-effect chemicals are used to straighten and lengthen yardlong beans? 1.
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Where do lilies grow? A detailed explanation of growth period length and environmental requirements
The lily is a flower we love very much, not only because it looks beautiful, but also because it is pure and noble. In the West, the lily has always been regarded as the "flower of the Virgin Mary," but do you know where lilies grow? How long is the growth period? What are the requirements for the growing environment?
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How Big Can the Striped Small Barb Grow? An Analysis of Adult Fish Body Length
The striped small barb is a kind of fish, also known as seven-star fish and red-eye ring, distributed in ditches or small streams among the plains of southern China and Taiwan, China, and is a common freshwater fish. Nowadays many people have also begun to farm striped small barbs, so how big can the striped small barb grow? 1. Striped small barb
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How Big Can Climbing Perch Grow? Maximum Weight and Body Length Explained
The turtle-shell climbing perch (Anabas testudineus) is a small fish of the family Anabantidae. It is perennial, lives in groups or alone, is diurnal, and is an omnivorous, partly carnivorous native freshwater fish. So, how big can climbing perch grow? 1. How big can climbing perch grow? Farmed climbing perch can reach a body length of more than 25 cm. From small fry to 15 cm, growth is rapid and takes only a few months; after 15 cm, growth begins to slow down, and growth rates differ between the sexes.
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How Big Can an Eel Grow? A Full Analysis of Its Size Limits
A wild eel is about 60-90 cm long and weighs about one kilogram, with a maximum length of up to 130 cm and a weight of about five kilograms. However, the Japanese white eel we usually eat is mostly farmed adult eel, usually about 40-50 cm long and weighing about 150-500 grams, that is
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How Do White-eyes Get Through Winter? Winter Care Methods and Precautions
The white-eye is a small insectivorous bird with a body length of 90-122 mm. Its body shape and color closely resemble those of the leaf warbler, and its eye ring is made up of conspicuous short white downy feathers, forming a striking white eye ring. So, how do white-eyes get through winter? 1. How do white-eyes get through winter? The white-eye is a summer
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How Do Ostriches Reproduce? A Detailed Explanation of Breeding Methods and Techniques
The ostrich is one of the largest birds, with a total length of 1.8 m, a head height of 2.6 m, and a body weight of up to 130 kg. Breeds include the "Red Neck", "Massa", "African Black" and "American" ostrich, among others. So, how do ostriches reproduce? 1. How ostriches reproduce. The ostrich belongs to a polygynous mating system.
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