Introduction to Ectoparasites Flashcards
What classifies an insect?
6 legs and distinct body regions
What classifies and arachnid?
8 legs and fused body regions
What are diptera, phtirptera, siphonepterta and Acarina?
Diptera- Flies
Phtirptera- lice
Siphoneptera- fleas
Acarina- ticks/mice
What ectoparasites are insects and which are acarines?
Insects- Flies, lice and fleas
Acarines- ticks and mites
Why is the control of ectoparasites important?
Weight loss, milk loss, morality, toxic and allergic reactions will occur as well as welfare and zoonoses
What makes up an ectoparasites exoskeleton?
Chitin
What is the name of arthropods plates?
Sclerites
How do arthropods grow?
Moult
What vascular system to arthropods have?
Haemocoele
How do insects and ticks/mites perform gas exchange?
Insects through- spiracles
Ticks/mites- stigmata
What are the features of insects?
3 distinct body regions- head, thorax, abdomen
3 pairs of leg originate from the thorax
Two antennae
Specialise mouthparts
What organ do some but not all insects posses?
Wings- lice and fleas don’t
What are features of acarines?
body split into 2 parts (cephalothorax and abdomen) Head fused to thorax 4 pairs of legs in adults, 3 in larvae No wings No antennae
What are the different fly mouth parts?
Mandibles/maxilla for cutting/slashing
Labrum- upper lip
hypopharynx- tongue like
Labellum- Lower lip
What are the tick mouth parts?
Hypostome- toothed in ticks
Saliva is anti coagulating, vasodilating, cementing
