What is a Scutum in ticks?
All hard ticks have a scutum or “shield” on their top side. So, start by looking at the top side of the tick. In adult females, the scutum covers the front 1/3 of the body but in males it covers the entire body. The scutum lacks elasticity and never changes in size, even as the female tick engorges.
Is Ixodes a soft tick?
Life cycle of the two-host ixodid (hard) ticks. The adult is considered the diagnostic stage, as identification to the species level is best achieved with adults.
What is the function of Scutum?
The first role of a scutum is to provide or extend a gliding surface for the flexor tendons, mostly for the deep digital flexor tendon. The MS achieves this function extending proximally the gliding surface of the flexor tuberosity of P2.
Can ticks be soft?
Behavior: Soft ticks differ from the hard ticks in that their body shape is oval and the head and mouthparts are hidden underneath the body. Soft ticks also are more flesh-like in appearance and do not have the hard, flattened exterior of ticks such as the brown dog tick, American dog tick and similar species.
What is a Scutum in anatomy?
The scutum (plural: scuta) is a sharp bony spur that is formed by the superior wall of the external auditory canal and the lateral wall of the tympanic cavity. It forms the lateral margin of Prussak space.
What is Prussaks space?
Prussak space is a subcomponent of the lateral epitympanic space and extends from the level of the scutum to the umbo. This space is best demonstrated on the oblique coronal image.
What to do if you find an engorged tick?
Pull backwards gently but firmly, using an even, steady pressure. Do not jerk or twist. Do not squeeze, crush, or puncture the body of the tick, since its bodily fluids may contain infection-causing organisms. After removing the tick, wash the skin and hands thoroughly with soap and water.
How do you remove an engorged tick?
Do not push on or squeeze the engorged tick body — focus on the tick’s head, nose, and mouth. The technique for pulling to tick out is the same whether using tweezers or the tick removal tool, first twist the tick several times to loosen the reverse barbs, then pull the tick away in the same direction it went in.
What does a soft tick look like?
Soft ticks appear to have a wrinkled body; lack a scutum; and the males and females are very close to the same size. Viewing a soft tick from above would give someone the impression that soft ticks do not have mouthparts.
What is hyperparasitism?
Hyperparasitism is the process that one fungus parasitizes another, is relatively common in nature.
How did hyperparasitism evolve in insects?
Hyperparasitism has evolved in only three insect orders: in Hymenoptera (in 17 families) and in a few species of Diptera and Coleoptera. Its evolution was preceded by that of primary parasitism that evolved in the Hymenoptera during the Jurassic period, about 135 mya.
How common is hyperparasitism in fungi?
Hyperparasitism is most common in fungi that form sclerotia, which are dense masses of pathogenic hyphae that remain in crop residues to promote infection in the next crop season. Hyperparasitism has evolved in only three insect orders: in Hymenoptera (in 17 families) and in a few species of Diptera and Coleoptera.