General characteristics of arthropods Flashcards
(24 cards)
Arthropoda meaning
jointed limbs
Main features of arthropods
Coelom
Bilateral symmetry
Chitinous exoskeleton
Generally dioecious
Arthropod systems
respiratory nervous circulatory excretory reproductive digestive
Cuticle is segregated by?
By a single layer of cells from hypodermis
Cuticle composition
proteins
Ca salts
chitin
Cuticle functions
Protection
Muscle insertion
gives rigidity to the whole body
Cuticle properties
Insoluble
Indigestible
Cuticle layers from outer to intern
Epicuticle
Procuticle(exocuticle and endocuticle)
Hypodermis
Basal membrane
Sensorial structures of cuticle
Fine hairs, spines, or microtriquia
Hairs or setae
-with/without sensitive neuron
Moult
Metamorphosis
Metamorphosis types
Complete/holometabolous
Incomplete/hemimetabolous
Moult is controlled by
hormones
Holometabolous moult stages
Egg
Larvae
Pupa
Imago
Hemimetabolous moult stages
Egg
Nymph
Imago
Tagmatisation of arthropods
Segmentation
- head
- thorax
- abdomen
Arthropod head is composed of
- antennae
- chelicerae/mouthparts
Chelicerae
arthropod mouthparts
Arthropod thorax is composed of
- legs and alae
- prothorax
- mesothorax
- metathorax
Arthropod abdomen is composed of
- organs
- reproductory appendices
Arthropod leg segments
coxa trochanter femur patella tibia tarsus metatarsus claw/equivalent
Arthropod respiratory system types
gills in aquatic arthropods
tracheal in terrestrial arthropods
tegumentary
Mange mites taxonomy
class arachnida -orders: Astigmata Prostigmata Mesostigmata
Hard tick taxonomy
class Arachnida -order Metastigmata -family Ixodidae
Soft tick taxonomy
class Arachnida -order Metastigmata -family Argasidae
