Predatory Mites For Sale: Phytoseiulus Persimilis (Spider Mite)
Phytoseiulus Persimilis (Spider Mite)
The name “spider” mite comes from the fact that they are related to spiders. They belong to the family Sparaphilidae, which includes such insects as ladybugs, lacewings and aphids.
Their common names include wolf spiders or brown recluse spiders.
Spiders have been around since ancient times. One of their most useful traits is their ability to survive in almost any environment.
However, there are some conditions where spiders cannot thrive, including extreme cold temperatures, high humidity levels and extremely dry air. These are called arachnid zones.
In these arachnid zones, spiders will not reproduce at all because they do not have enough food sources to support themselves and will die out completely if left alone.
Spiders are among the few animals that have evolved natural defenses against these types of environments. They rely on specialized hairs, known as chelicerae, to capture prey and hold it while they feed.
When threatened, they release a pheromone that attracts other spiders to attack their enemies. If one spider attacks another spider, then the two spiders join together to form a larger web so that others may be attracted to join in the fight.
The major types of spiders found in arachnid zones are brown recluse spiders, jumping spiders and wolf spiders. All three of them have similar physical features and live in similar environments, so they rely on similar hunting techniques.
The most important difference between the three is their size: spiderlings (baby spiders), young spiders and adult spiders. Spiderlings are very small.
In fact, they are too small to be detected without the use of a magnifying glass.
Due to their small size, they can hide in the smallest of cracks and crevices, making them very hard to locate. Young spiders (baby spiders) are slightly larger than spiderlings and have fewer spots on their abdomens and dorsal parts.
Adults (spider) are about two to four times larger than young spiders, and their coloration is much more vivid. A magnifying glass will make it easy to identify all three types of spiders from their eye patterns.
Spiders do not spin webs to capture prey; they rely solely on their speed and cunning to hunt down food. Spiders eat mostly insects, including mosquitoes; however, they do not turn down a nice meal of rabbit blood when it is available.
Spiders have many natural enemies in arachnid zones, including humans, centipedes and other predatory animals. Humans hunt spiders for their body parts, which are used to create anti-venom in hospitals.
There are many dangers faced by spiders in arachnid zones. Their most dangerous predators are humans, who hunt and kill them for their body parts.
These spider hunters use a variety of tools and weapons to capture their prey. Some of the more common weapons include: sticky traps, glue boards, insecticides and other pesticides.
Although many humans hunt spiders for food, clothing and other practical purposes, some people have a psychological revulsion of spiders. This causes some people to go to extremes to kill as many as possible whenever they get the chance.
Some people also have a fear of spiders, a condition known as arachnophobia. The fear is thought to stem from a time in ancient history when spiders were much larger and could easily eat humans for food.
Even today, the largest spiders can easily kill small animals and consume them as meals.
The fear of spiders was once much more common due to the large quantity of larger predatory spiders found around the world. Humans would see these massive spiders and experience intense fear, sometimes leading to heart attacks and other health conditions.
As spiders began to evolve and become smaller over time, it became clear that they could no longer eat humans for food. This resulted in the fear of spiders to slowly disappear, especially among younger generations who never experienced the large spiders of ancient history.
As a result, many humans living in arachnid zones treat spiders as if they are low-priority creatures. They are not seen as intelligent and, instead, are seen more like pests that get into homes and must be exterminated.
Some humans go to great lengths to protect spider populations from being exterminated or hunted. These humans believe that spiders have just as much a right to exist as humans do, and many are working to make laws to protect spiders from being hunted.
Whether or not these efforts will be successful remains to be seen.
Spiders are invertebrates that have segmented bodies and four pairs of legs. The front two pairs are normally longer than the back two pairs.
The exoskeleton of a spider consists of many layers and is a hard shell protecting the entire body of a spider from predators. The exoskeleton is covered in microscopic hairs to prevent water loss and keep its body temperature regulated.
The brain of a spider is in its abdomen and consists of three main parts known as the ganglion, the subesophageal ganglion and the subpharyngeal ganglion. It is these three parts that control all the sensory inputs and motor outputs of the spider.
Spiders are carnivorous creatures that normally eat insects, but some species have been known to consume small rodents, lizards and other small animals when they can.
Spiders normally catch their prey with thin, hair-like filaments known as pheromone trails. The pheromones contained in the filaments are chemicals that send signals to other spiders.
This signal attracts other spiders to a common area where they can find food.
Spiders tend to have an extremely fast metabolism and eat often. Most species of spider generally eat once larger prey every few days and smaller prey sometimes more frequently.
Spiders have eight eyes. The four small eyes are called ocelli and are responsible for light detection.
The larger eyes in the front are known as the anterior median eyes and are mostly used to detect motion. The larger eyes in the back are known as the posterior median eyes and are used to detect contrast changes.
One method of spider communication is known as stridulation. This is a process where one spider rubs its hard parts (such as the patella) against its soft parts (such as the base of its feet).
This creates a specific sound that other spiders can detect from long distances.
Most spiders have venomous bites that can be fatal to humans. These bites are normally only lethal to small insects and other spiders.
Spiders normally have one or two sharp, hollow fangs that are used to pierce the skin of their prey and inject venom. Once these hollow fangs are dipped in venom, it is forced into the wound and damages the soft tissue, preventing the blood from clotting.
The average lifespan of a spider is normally one to two years. Spiders generally do not die from old age, but from becoming food for other creatures or by accidently drowning.
Spiders are members of the arachnid class, which also includes scorpions, mites and ticks. All of these creatures have two body segments, eight legs and no wings.
The largest spider in existence is the Peruvian giant yellow baboon tarantula. This spider can have a leg span of up to eleven inches and fangs that can grow to be more than half an inch long.
Spiders normally weave webs to trap their prey. These webs are made out of special kinds of proteins and specialized chemicals.
The bulk of the material is water and the silk is very elastic, but vulnerable to abrasion.
The silk web is ejected from a pair of salivary glands through a series of slits in the spider’s jaws. These specialized glands produce the material continually, but at different rates depending on the size of the web.
Spiders normally eat their webs daily and replace them often. These webs are composed of multiple different types of strands that come in a variety of different strengths, depending on the type of web and how it is used.
The biggest spiders normally prey on the smallest insects and other arthropods. These smaller creatures are then swallowed whole or in chunks as the spider injects its digestive fluids into them.
The smallest spiders normally prey on the largest plankton and bacteria. Depending on the species of plankton or bacteria ingested, these creatures can remain in the spider’s stomach for up to a week before being digested.
The largest spider populations exist in the rainforests. Most spiders prey on small insects, other spiders and small amphibians.
A few species are known to prey on small birds and mammals.
The smallest populations of spiders live in caves, deserts and the frozen tundra. These spiders normally feed on whatever they can find and occasionally on each other.
Answer 23: The brain is an incredibly complex organ that controls most functions of the human body. Without it, people are incapable of thought, reason or any other higher brain function.
Question 24: Most Dangerous
A person’s skin is their largest organ and plays a vital role in many essential bodily functions. Skin consists of several layers that work together to protect the body.
The average human skin cell lives for about a month before it flakes off or is sloughed off during the process of rubbing against things.
The average human loses more than 50 million skin cells every day. In one year, a person sheds about 1.5 kg (3.3 lb) of skin.
During the life span of a skin cell, it travels about 125 miles to reach its destination. The longest distance a cell can travel is from the bottom of the foot to the top of the head.
The outermost layer of skin is called the stratum corneum. It is made up of flat, thin cells that have lost their nuclei and can be easily torn off if rubbed against something.
The dermis is the layer just beneath the stratum corneum. It contains blood vessels, nerves and oil glands that keep the skin healthy and able to resist infection, inflammation and abrasion.
Sweat glands, also known as sudoriferous glands, secrete a fluid that cools the body through the process of evaporation. These can be found all over the skin, except for the lips, the palm of the hand, soles of the feet and some parts of the eyelids.
The body has several methods of regulating the temperature of the skin. All of these methods work together to prevent the body from getting too hot or too cold.
When the body is cooled, the blood vessels in the skin will narrow, causing it to go pale or sometimes bluish.
When the body is warm, the blood vessels will widen causing the skin to turn red. In addition, the surface of the skin will produce more sweat, causing it to feel sticky.
The average human brain weighs about 3 lb (1.4 kg).
It is a soft, pink organ and weighs about as much as three potatoes.
It is the center of the nervous system and the seat of consciousness. It also controls most of the functions of the body.
The brain cannot feel pain and is very delicate.
The brain is made up of several parts that control different actions or functions. Some parts of the brain control memory, reasoning, hearing, seeing, walking, talking etc.
The brain is inside the skull and is surrounded by cerebrospinal fluid, that protects it from damage.
Answer 24: The skin is the largest organ in the human body. It consists of several layers that work together to protect the body.
It also has many other important functions.
Question 25: The ankle is a joint between the foot and leg bones. In humans, this is equivalent to where the ankles are located.
This is a ball and socket joint.
Question 26: The knee is the hinge joint between the thigh and the lower leg. It consists of two bones, the thigh bone and the shin bone.
The knee only bends in one direction, but allows for a lot of movement.
Answer 27: The hip is a ball and socket joint that connects the thigh to the pelvis. It allows for a wide range of movements and is similar to the shoulder and elbow joints in design.
The hip, or pelvic, bone consists of three separate bones: the ilium, ischium and pubis. These bones are held together by muscles and ligaments to form a solid unit.
This unit allows for many movements such as flexing, extending and rotating. The hip joint is a ball and socket joint that joins the pelvic bone to the thigh bone.
The knee and the ankle are also hinge joints that allow for flexion and extension. This is a similar design and works in the same way as your elbow or shoulder.
All of these joints allow for movement and stability of the skeleton.
The hip bone is also known as the pelvis and consists of several small bones that join together at each end.
Answer 28: The humerus (upper arm), radius and ulna (forearm bones on the thumb side of the forearm) and carpals (wrist bones) make up the bones of the forearm.
The bones of the lower arm are the radius and ulna. These bones are on the pinky side of the forearm.
The forearm is located between the elbow and wrist and contains several important bones. The radius and ulna make up the large bones of the lower arm.
On the thumb side of the forearm are eight carpal bones . These small bones are arranged in a parallel pattern that allows for flexibility.
The humerus is the only bone of the upper arm and makes up most of its length. It is cylinder-shaped and has two heads, or ball-and-socket joints, that connect it to the shoulder joint.
Answer 29: The patella (kneecap), Tibia and Fibula make up the bones of the knee. These bones are on the inside part of the leg.
The knee is a hinge joint that connects the thigh and calf. It consists of two bones, the large tibia and the smaller fibula.
These sit next to each other in the middle of the leg and are separated by a thin layer of cartilage. They are stabilized by strong bands of ligaments that connect them to other bones.
The patella (kneecap) is a small bone that sits in front of the knee joint.
Answer 30: The ankle consists of seven tarsals (ankle bones on the outside of the foot), five metatarsals (long bones of the foot) and fourteen phalanges (foot bones).
The ankle is a hinge-like joint that connects the leg to the foot. It consists of seven tarsals, five metatarsals and fourteen phalanges.
The tarsals and metatarsals are arranged in a parallel pattern that allows for flexibility. The bones of the ankle and foot are connected by strong ligaments.
This allows for movement in many different directions. The ankle joint is stabilized by strong muscles, tendons and ligaments.
This includes the calf muscle (gastrocnemius and soleus) that run along the back of the lower leg.
Answer 31: The foot is made up of seven tarsals, five metatarsals and fourteen phalanges. The tarsals are located on the outside of the foot while the metatarsals are located on the inside.
The foot is an important part of the skeletal system that provides support and movement for other parts of the body. It is made up of thirty three bones.
These bones are arranged in a specific way that allows for flexibility and support.
The fourteen phalanges or bones of the toes make up the toes themselves.
The five metatarsals are located on the inside of the foot and make up the majority of the length.
The seven tarsals are located on the outside of the foot and contribute to both its length and width.
Answer 32: The shoulder is a ball and socket joint. It allows for movement in all directions.
The shoulder is a ball and socket joint that joins the arm to the trunk of the body and allows for movement in all directions. The socket, or acetabulum, is formed by the undeveloped femur bones of the legs.
These are protected by a fibrous sac called the labrum.
The shoulder joint also has connective tissue called the labrum. This helps deepen the socket and increases stability.
The shoulder blade or scapula is a flat bone that forms a protective sleeve for the shoulder joint. It also provides leverage for arm movements.
The humerus is the upper arm bone that connects to the shoulder and the forearm. It fits into the scapula at the shoulder and the ball-shaped head of the humerus fits into the socket of the shoulder blade called the glenoid fossa.
The forearm is made up of two bones; the radius and ulna. It is located between the elbow and wrist and serves as a support for the hand.
It also forms a flexible connection between the hand and the rest of the arm.
The radius and ulna are parallel to each other. The radius runs next to the thumb side of the forearm while the ulna runs next to the little finger side.
They are not joined at the palm of the hand but connect to each other by a group of bones, called the wrist bones or carpals. There are eight of these bones in all and they connect to the five metacarpals that make up the palm side of the hand.
The hand consists of numerous phalanges or bones of the fingers. The thumb only has two while the rest have three.
The bones in the hand and fingers are connected by strong bands of fibrous tissue called ligaments.
These finger and wrist bones allow for a wide range of movement. The amount of mobility of the fingers is especially important for musicians.
Answer 33: The skull consists of several flat and curved bones that form a protective case around the brain. This protects it from injury.
The base or back part of the skull is made up of five large bones fused together to form the support for the brain, while the forehead or frontal part of the skull consists of many small bones. The lower jaw of the skull is called the mandible.
There are two large holes in the base of the skull; these are called the foramen magnum or elongated holes. The foramen magnum holds a tube of nerves that connect the brain to the spinal cord, which is a continuation of the brain.
These nerves are attached to the brain and run through this tube or canal.
The mandible holds our teeth and is also connected to the eight bones of the cranial facial skeleton. These eight bones provide support for the nose, jaw and roof of the mouth.
They also form the framework for the face.
The ears are not part of the skull but are connected to it by muscles and fibrous tissue.
The skull consists of 22 bones; 14 of them are called cranial bones while eight of them are called facial bones. The mandible or lower jaw is also a facial bone.
The 14 bones of the skull are:
Frontal, two Parietal, two Temporal, two Ethmoid, one Sphenoid, two Occipital, one
The eight bones of the face are: Two Maxillary, two Zygomatic, two Nasal, one Lacrimal, and one Mandible.
The ribcage is also part of the skeleton and protects the vital organs in the chest. It consists of curved bones called ribs that connect to the spine.
The sternum or chest plate is a flat bone that fits in the middle of the ribcage.
The skeletal system is also attached to the muscular system, which controls movement. Muscles are attached to the skeleton and when they contract or shorten, they cause movement at the joints.
Sources & references used in this article:
Response of predatory mites with different rearing histories to volatiles of uninfested plants by J Takabayashi, M Dicke – Entomologia Experimentalis et …, 1992 – Wiley Online Library
Control of the broad mite (Polyphagotarsonemus latus (Banks)) on organic greenhouse sweet peppers (Capsicum annuum L.) with the predatory mite, Neoseiulus … by PG Weintraub, S Kleitman, R Mori, N Shapira… – Biological control, 2003 – Elsevier
… mites (Acari: Phytoseiidae) in agro-ecosystems and conservation biological control: a review and explorative approach for forecasting plant-predatory mite … by MS Tixier – Frontiers in Ecology and Evolution, 2018 – frontiersin.org