Chapter 36 Parasitic Insects: Phthiraptera – Chewing and Sucking Lice

These flashcards cover essential concepts related to parasitic insects, focusing on chewing and sucking lice, their effects, control measures, and associated diseases.

What are the two main groups of lice discussed in the lecture?

Chewing lice and Sucking lice.

How many known species of chewing lice are there?

About 4400 known species.

What do chewing lice typically feed on?

They feed on the blood, skin, or feathers of their hosts.

What is the effect of Bovicola bovis on cattle?

It affects cattle by causing skin irritation and reducing livestock health.

Can infested wool still be marketed after shearing?

No, infested wool is typically not marketable.

What is the main significance of sucking lice in veterinary medicine?

They are of considerable medical and veterinary importance.

What are the two distinct forms of Pediculus humanus that parasitize humans?

Body lice and Head lice.

What is vagabond’s disease?

Darkened thick skin caused by chronic, heavy infections.

What does plica polonica refer to?

Matted hair, often associated with fungal disease.

Where are crab lice (Phthirus pubis) commonly found?

In the pubic area.

What is the common method of transmission for pubic lice?

Sexually transmitted.

What diseases can pubic lice predict?

Gonorrhea or other STDs.

How do Haematopinus suis affect pigs?

They act as vectors for swine cholera and swine pox.

What are the three human diseases transmitted by Pediculus humanus humanus?

Epidemic Typhus, Trench Fever, and Epidemic Relapsing Fever.

What pathogen causes Epidemic Typhus?

Rickettsia.

What are control measures for lice in humans?

Permethrin and combing out.

How do wild animals control louse populations?

Through grooming and preening themselves.

What is anting?

A behavior in which birds use ants to fight off parasites in their feathers.

What are the two main groups of lice discussed in the lecture?

Chewing lice and Sucking lice.

How many known species of chewing lice are there?

About 4400 known species.

What do chewing lice typically feed on?

They feed on the blood, skin, or feathers of their hosts.

What is the effect of Bovicola bovis on cattle?

It affects cattle by causing skin irritation and reducing livestock health.

Can infested wool still be marketed after shearing?

No, infested wool is typically not marketable.

What is the main significance of sucking lice in veterinary medicine?

They are of considerable medical and veterinary importance.

What are the two distinct forms of Pediculus humanus that parasitize humans?

Body lice and Head lice.

What is vagabond’s disease?

Darkened thick skin caused by chronic, heavy infections.

What does plica polonica refer to?

Matted hair, often associated with fungal disease.

Where are crab lice (Phthirus pubis) commonly found?

In the pubic area.

What is the common method of transmission for pubic lice?

Sexually transmitted.

What diseases can pubic lice predict?

Gonorrhea or other STDs.

How do Haematopinus suis affect pigs?

They act as vectors for swine cholera and swine pox.

What are the three human diseases transmitted by Pediculus humanus humanus?

Epidemic Typhus, Trench Fever, and Epidemic Relapsing Fever.

What pathogen causes Epidemic Typhus?

Rickettsia.

What are control measures for lice in humans?

Permethrin and combing out.

How do wild animals control louse populations?

Through grooming and preening themselves.

What is anting?

A behavior in which birds use ants to fight off parasites in their feathers.

What characteristic defines lice as ectoparasites?

They live on the exterior of their host's body.

What are nits?

The eggs of lice, typically glued to hair or feathers.

What is a general impact of heavy louse infestations on hosts?

Significant irritation, anemia, and reduced productivity or health.

What pathogen causes Trench Fever, transmitted by lice?

Bartonella quintana.

What pathogen causes Epidemic Relapsing Fever, transmitted by lice?

Borrelia recurrentis.