Cattle and Equine Lice Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which louse is most abundant and clinically important in cattle populations?

  • Haematopinus asini
  • Bovicola ocellatus
  • Bovicola (Damalinia) bovis (correct)
  • Bovicola equi

What is a common clinical sign associated with heavy lice infestations in equines?

  • Weight gain
  • Sores from rubbing (correct)
  • Increased appetite
  • Excessive grooming behavior

Which louse is described as occurring in both donkeys and horses?

  • Bovicola equi
  • Haematopinus asini (correct)
  • Bovicola ocellatus
  • Bovicola (Damalinia) bovis

What is often associated with infestations caused by Haematopinus asini in horses?

<p>Lesions called light spots (D)</p> Signup and view all the answers

In what season are heavy lice infestations most commonly observed in equines?

<p>Winter (B)</p> Signup and view all the answers

What is a characteristic of adults in the specified lice species?

<p>They are dorsoventrally flattened. (D)</p> Signup and view all the answers

Which segment count is associated with the antennae of amblyceran lice?

<p>4-segmented (D)</p> Signup and view all the answers

What factor is NOT mentioned as contributing to fluctuations in lice populations?

<p>Rural housing conditions (B)</p> Signup and view all the answers

Which characteristic differentiates the first pair of legs in lice of the Linognathidae family?

<p>They are shorter than the other pairs. (B)</p> Signup and view all the answers

Which method of spread is NOT a means to infest lice?

<p>Vertical transmission only (B)</p> Signup and view all the answers

What is a common characteristic of chewing lice of birds regarding their legs?

<p>They have two claws on each leg. (C)</p> Signup and view all the answers

What is the survival time away from hosts for chewing and blood-sucking lice?

<p>2-4 days and 4-7 days (A)</p> Signup and view all the answers

Which host characteristic is likely to harbor more lice?

<p>Distressed animals (B)</p> Signup and view all the answers

Which species is known as the hog louse?

<p>Haematopinus suis (B)</p> Signup and view all the answers

Which of the following lice species is known to cause anemia?

<p>Menacanthus cornutus (D)</p> Signup and view all the answers

What type of lice is found primarily on the neck and shoulders of animals?

<p>Blood-sucking lice (C)</p> Signup and view all the answers

Which species is the most important body louse in poultry?

<p>Menacanthus stramineus (D)</p> Signup and view all the answers

Where are larger numbers of lice typically found on an animal?

<p>Near body openings or skin abrasions (C)</p> Signup and view all the answers

Which louse species affects ducks?

<p>Anaticola crassicornis (A)</p> Signup and view all the answers

Which of the following statements about louse infestations is true?

<p>Chewing and sucking lice infestations can occur sporadically. (A)</p> Signup and view all the answers

Which is NOT a species of louse mentioned in the content?

<p>Dermanyssus gallinae (C)</p> Signup and view all the answers

What is the primary habitat preference of Tsetse flies from the morsitans group?

<p>Dry savanna habitats (C)</p> Signup and view all the answers

Which of the following statements about Tsetse flies is NOT true?

<p>They are mostly active at night. (A)</p> Signup and view all the answers

What is the average temperature range for Tsetse fly habitats?

<p>16 to 40 ºC (D)</p> Signup and view all the answers

What does the genus name 'Glossina' translate to in English?

<p>Tongue fly (D)</p> Signup and view all the answers

Which method is NOT commonly used for controlling Tsetse fly populations?

<p>Physical barriers (C)</p> Signup and view all the answers

How long can the maximum lifespan of a female Tsetse fly be?

<p>3 to 4 months (B)</p> Signup and view all the answers

What is the main reason the control of nematodes is considered difficult?

<p>Resistance to chemicals (A)</p> Signup and view all the answers

Which Tsetse fly group is associated primarily with forested habitats?

<p>Fusca group (C)</p> Signup and view all the answers

Which of the following insect growth regulators (IGRs) is NOT mentioned in the content?

<p>Pyriproxyfen (B)</p> Signup and view all the answers

What is the primary method suggested for controlling flea larvae indoors?

<p>Vacuum cleaning the environment (B)</p> Signup and view all the answers

Which of the following is a biological control method mentioned for flea management?

<p>Entomopathogen nematodes (C)</p> Signup and view all the answers

How long is the biological control method effective against flea larvae and cocoons when applied?

<p>4-6 weeks (B)</p> Signup and view all the answers

In which areas should flea treatments be sprayed for maximum effect?

<p>Shady and wet areas (C)</p> Signup and view all the answers

What common misconception is associated with flea adulticide treatment indoors?

<p>Flea larvae often escape treatment (C)</p> Signup and view all the answers

What is the primary focus of Integrated Flea Management strategies?

<p>Combination of prevention and control methods (B)</p> Signup and view all the answers

Which of the following true bugs is known to feed on human blood?

<p>Cimex lectularius (D)</p> Signup and view all the answers

During which months is the activity period of adults in Europe observed?

<p>May to October (D)</p> Signup and view all the answers

What is the typical number of eggs a female can lay in humid soil?

<p>100-1000 (C)</p> Signup and view all the answers

What is the pupal period of these flies?

<p>1-4 weeks (A)</p> Signup and view all the answers

What kind of stimuli do Tabanids use to detect their hosts?

<p>Chemical and visual stimuli (D)</p> Signup and view all the answers

What is the significance of positive polarotaxis in Tabanids?

<p>It directs them to sources of polarized light for locating hosts. (B)</p> Signup and view all the answers

Which of the following is NOT considered a biological vector associated with Tsetse flies?

<p>Fungi (C)</p> Signup and view all the answers

What is the average duration for a complete life cycle from egg to adult?

<p>1 year, potentially extending to 2-3 years (B)</p> Signup and view all the answers

What are Tabanids primarily attracted to in potential hosts?

<p>Dark fur coats (D)</p> Signup and view all the answers

Flashcards

Lice

Wingless insects with flattened bodies, typically 2-6 mm long.

Sexual Dimorphism in Lice

The difference in appearance between male and female lice is usually subtle, with males being slightly smaller.

Antennae in Lice

Four segments in amblyceran lice, 3-5 segments in ischnoceran (blood-sucking) lice.

Maxillary Palps

Mouthparts used for chewing or sucking blood.

Signup and view all the flashcards

Legs of Lice

Lice have three pairs of legs, with chewing lice possessing two claws on each leg for gripping onto their host.

Signup and view all the flashcards

First Pair of Legs in Linognathidae Lice

The first pair of legs in Linognathidae lice are shorter than the other two pairs.

Signup and view all the flashcards

Host Specificity of Lice

Lice are highly host-specific, meaning they usually only infest one type of animal.

Signup and view all the flashcards

Factors Influencing Lice Populations

Factors like seasonality, grooming, host immunity, and animal health can influence lice population size.

Signup and view all the flashcards

Chewing Lice (Bovicola equi)

A type of louse that commonly infects horses and donkeys. They are a common cause of irritation, leading to hair loss, scratching, and even sores.

Signup and view all the flashcards

Chewing Lice (Bovicola bovis)

A type of louse that commonly infects cattle, often found in high numbers on their heads and bodies. It can cause skin irritation and hair loss.

Signup and view all the flashcards

Blood-sucking Louse (Haematopinus asini)

A blood-sucking louse that primarily infects donkeys, but can also be found on horses. It can lead to anemia due to blood loss.

Signup and view all the flashcards

Light Spot, Fleck

Small patches of hair loss on cattle, often caused by heavy infestations of chewing lice.

Signup and view all the flashcards

The Feathers

A term used to describe the clusters of lice nits (eggs) often found above the hooves of horses.

Signup and view all the flashcards

What are IGRs?

Insect growth regulators (IGRs) are chemicals that disrupt the growth and development of insects, preventing them from reaching maturity.

Signup and view all the flashcards

How does vacuuming help control fleas?

Vacuuming removes fleas from the environment, particularly from carpets and furniture.

Signup and view all the flashcards

Why is bedding washing crucial for flea control?

Washing bedding in hot water kills fleas and their eggs, preventing reinfestation.

Signup and view all the flashcards

How does combing help with flea control?

Combing your pet's fur for several minutes, focusing on the neck, helps remove fleas and their eggs.

Signup and view all the flashcards

What is the purpose of light traps in flea control?

Light traps attract and trap adult fleas.

Signup and view all the flashcards

How do nematodes help control fleas?

Steinernema carpocapsae is a type of entomopathogenic nematode that can be sprayed in flea breeding areas to kill larvae and cocoons.

Signup and view all the flashcards

What is integrated flea management?

Integrated flea management (IFM) combines various methods for long-term flea control, including IGRs, vacuuming, washing bedding, and biological control.

Signup and view all the flashcards

What are true bugs?

The "true bugs" comprise a large group of insects with around 90,000 species, most of which feed on plants (phytophagous).

Signup and view all the flashcards

Blood-sucking Lice in Cats

Linognathus setosus, a type of blood-sucking louse, is a common parasite of cats.

Signup and view all the flashcards

Blood-sucking Lice in Pigs

Haematopinus suis, also known as the hog louse, is a blood-sucking louse that primarily infests pigs.

Signup and view all the flashcards

Chewing Lice in Cats

Felicola subrostratus is a chewing louse that commonly infects cats.

Signup and view all the flashcards

Blood-sucking Lice in Cats

While blood-sucking lice are present in many animals, cats are known to only have chewing lice.

Signup and view all the flashcards

Most Important Poultry Louse

Menacanthus stramineus is a chewing louse that is most important in poultry, often causing significant health issues.

Signup and view all the flashcards

Lice Types in Poultry

Chewing lice are the only type of lice found on poultry.

Signup and view all the flashcards

Lousiness in Dogs and Cats

Lousiness is common in dogs and cats, particularly in older, younger, or immunocompromised animals.

Signup and view all the flashcards

Lice Prevalence and Conditions

Lice are more prevalent in areas where animals are kept in close proximity.

Signup and view all the flashcards

How do tabanids find their hosts?

Tabanids are attracted to mainly black and brown fur coats using reflected polarized light, acting as a signal to find a host.

Signup and view all the flashcards

What are the main stimuli that attract Tabanids?

Tabanids are attracted to a range of stimuli, including carbon dioxide, visual cues, like movement, and polarized light.

Signup and view all the flashcards

How are Tabanids a nuisance?

Tabanids are a nuisance as they bite and cause blood loss, leading to allergic dermatitis in some animals.

Signup and view all the flashcards

What are the diseases that Tabanids can spread?

Some Tabanids are vectors, meaning they can transmit diseases like equine infectious anemia, hog cholera, anthrax, tularemia, and trypanosomiasis.

Signup and view all the flashcards

What is the main vector of trypanosomiasis?

The main vector of trypanosomiasis is the tsetse fly, which belongs to the Tabanidae family.

Signup and view all the flashcards

What type of life cycle do Tabanids have?

Tabanids have a life cycle known as holometabolism, which involves four stages: egg, larva, pupa, and adult.

Signup and view all the flashcards

What are the typical activity patterns of Tabanids?

Tabanids are primarily diurnal, meaning they are active during the day, though some species are nocturnal. Most are exophilic, preferring to be outdoors, and exophagic, feeding outside.

Signup and view all the flashcards

How many species of Tabanids exist?

Tabanids are a diverse group of flies, with approximately 3,500 species found worldwide. Some common genera include Tabanus, Haematopota, and Chrysops.

Signup and view all the flashcards

What are Tsetse flies?

Tsetse flies are a genus of biting flies belonging to the family Glossinidae. They are found in tropical and subtropical regions of Africa, particularly in areas with suitable rainfall, temperature, and vegetation.

Signup and view all the flashcards

Where do Tsetse flies live?

Tsetse flies primarily inhabit areas with an annual rainfall of at least 0.5 mm and temperatures ranging between 16°C and 40°C. They prefer habitats that provide shelter and access to hosts, such as forested areas, vegetation around lakes and rivers, and dry savanna.

Signup and view all the flashcards

Explain the Tsetse fly's life cycle.

The Tsetse fly's life cycle is holometabolic, meaning it undergoes complete metamorphosis, transitioning from egg to larva to pupa to adult.

Signup and view all the flashcards

What is the Tsetse fly's feeding behavior?

Tsetse flies are known for their unique adaptation of feeding exclusively on blood, and this is essential for their survival and reproduction.

Signup and view all the flashcards

Why are Tsetse flies significant?

Tsetse flies are vectors for Trypanosoma parasites, responsible for causing sleeping sickness (human African trypanosomiasis) and Nagana (animal African trypanosomiasis) in mammals.

Signup and view all the flashcards

How is Tsetse fly reproduction different?

Tsetse flies have a unique feature: the female fly remains fertile for life and typically mates only once.

Signup and view all the flashcards

Describe the classification of Tsetse flies.

The genus Glossina consists of 31 species and subspecies categorized into three groups: fusca, palpalis, and morsitans, each with specific habitats and geographical distribution.

Signup and view all the flashcards

How can Tsetse fly populations be controlled?

Controlling Tsetse fly populations can be challenging and requires a multi-faceted approach. Methods include mechanical traps, chemical sprays, water management, and biological control strategies.

Signup and view all the flashcards

Study Notes

Veterinary Entomology

  • Deals with arthropod pests and disease vectors affecting livestock, poultry, pets, and wildlife.
  • Two key categories of ectoparasites:
    • Facultative: can survive without a host (e.g., flies).
    • Obligatory: require a specific host species to survive (e.g., blood-feeding lice).
  • Arthropods are classified by their parasitism:
    • Permanent/stationary ectoparasites
    • Temporary ectoparasites
    • Adults only
    • Larvae only
    • Subadults and adults
  • Common veterinary pests include sucking and biting lice, fleas, biting flies, non-biting muscoid flies, myiasis-causing flies, mites, and ticks.

Reproduction of Arthropods

  • Sexual dimorphism may occur.
  • Females are often oviparous (lay eggs), ovoviviparous (eggs hatch inside the female), or larviparous (give birth to larva).
  • Life cycles vary, with some displaying hemimetabolic (incomplete metamorphosis) development and others holometablic (complete metamorphosis) development, including a pupal stage.

Impact of Ectoparasites

  • Direct effects: blood loss, hide/wool/tissue damage, nuisance, paralysis, allergies, and immunosuppression
  • Indirect effects: reduced animal production, nuisance to workers and neighbors, costs of control, and transmission of zoonotic diseases.

Lice Infestations (Pediculosis)

  • Chewing/Biting Lice (Mallophaga) feed on skin scales, lipids, and bacteria. They include species like Felicola subrostratus only in feline or cat species, which is sometimes associated with the infestations in birds.
  • Blood-Sucking Lice(Anoplura) rely on blood for sustenance. Some species of concern in veterinary settings.

Fleas

  • Ectoparasites of mammals, birds, and even humans.
  • Historically, crucial to numerous infectious diseases (e.g., plague).
  • Numerous species, 90% parasitizing mammals.
  • Many are nidicolous (nest dwelling).
  • Important genera include Ctenocephalides (dog and cat fleas), and Pulex (human flea).
  • Fleas are characterized by their jumping ability and highly flattened bodies.
  • Feature combs called ctenidia on the head and thorax.
  • Major source of ectoparasite problems mostly in dogs and cats and also to humans. They may be found around the pets.
  • Adults feed on blood, short life time, 15-30 days.
  • Mostly living around the hosts.
  • Life cycles of holometobolic types including eggs, larvae, pupae and adults.
  • Larvae feed on organic matter.

True Bugs (Hemiptera)

  • Primarily phytophagous (plant feeders) but also includes some predatory species.
  • Major groups include Cimex (bed bugs; Cimex lectularius is a major urban pest), and Triatoma (kissing or assassin bugs).
  • Bed bugs are blood suckers, they feed on hosts at night.
  • Kissing bugs are blood suckers, with some species being vectors for Trypanosoma cruzi, the causative agent of Chagas disease. Their biting style is sometimes characterized as kissing the skin.

Coleoptera

  • The beetle order.
  • Includes the lesser mealworm (Alphitobius diaperinus) but is not a parasite.
  • This beetle is a stored-product pest.

Diptera (Flies)

  • Includes mosquitoes (Culex, Aedes, Anopheles), black flies (Simulium ), biting midges (Culicoides), and other Diptera species of importance in veterinary science.
  • Many mosquito larvae are found in water.
  • Females of most species require a blood meal before they can lay eggs.
  • Many species are crepuscular or nocturnal, and feed primarily in or near or around water sources.
  • Some species are vectors of important diseases like Malaria (Plasmodium species).
  • Many species are attracted to animals, especially those with wet or wounds.
  • Black flies are diurnal (active during the day).
  • Biting midges are also diurnal and feed near their breeding place.
  • Some are vectors for significant diseases as well as for nuisance.
  • Some species may cause myasis as well as transmit viruses or bacteria.

Other Important Pests

  • Ticks (Ixodidae): Hard ticks (e.g., Ixodes ricinus, Dermacentor spp.) and soft ticks (e.g., Argas spp.). Ticks are vectors of many diseases, including Lyme disease. They are generally found in moist environments in wooded areas, but not only.
  • Mites (Prostigmata/Mesostigmata): Chiggers (e.g., Trombicula spp.), mange mites (e.g., Sarcoptes spp.), poultry red mites (e.g., Dermanyssus gallinae), and other mites.

Botflies (Oestridae)

  • Some Oestrus species are external parasites in veterinary practice.
  • The Hypoderma species lay eggs on the host.
  • The larval stages develop internally, causing myiasis.
  • These are external parasites.
  • The external infestations are caused by oviposition of the flies.
  • The botflies are mainly characterized by the fact that their larval stages cause myiasis.

Control Methods

  • Chemical control: using insecticides (e.g., ivermectin, fipronil, permethrin).
  • Non-chemical control: physical removal of pests (e.g., combing, vacuuming), reducing breeding areas (proper waste disposal), introducing natural predators.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Veterinary Entomology PDF

More Like This

Equine Behavior and Restraint Quiz
37 questions
Equine terminology and colors
12 questions
Equine Science Vocabulary Quiz
25 questions
Use Quizgecko on...
Browser
Browser