Topic 2: Biology of Insects Flashcards
1
Q
ECDYSIS
A
- exoskeleton
2
Q
MOLTING
A
- shedding of the exoskeleton
3
Q
APOLYSIS
A
- separation of old exoskeleton from underlying epidermis
4
Q
INSTAR
A
- growth stage between each molt
5
Q
STADIUM
A
- duration of an instar
6
Q
STAGES IN DEVELOPMENT OF AN INSECT
A
- egg
- immature stages
- pupa
- adult stages
7
Q
EGG
A
- development from a noncellular zygote into a cellular embryo
8
Q
IMMATURE STAGES
A
- feeding stage
9
Q
LARVA
A
- immature stage of holometabolous insects
10
Q
TYPES OF LARVA
A
- polypod
- oligopod
- apodous
11
Q
LARVA: POLYPOD
A
- short thoracic leges
- abdominal prolegs
12
Q
LARVA: OLIGOPODS
A
- lack abdominal prolegs
- functional thoracic legs
- prognathous mouthparts
13
Q
LARVA: APODOUS
A
- lack true legs
- worm-like
- live in soil, mud, or within bodies of other organisims (parasitoids)
14
Q
NYMPH
A
- immature stages of paurometabolous insects
- never enters pupal stage
15
Q
PUPA
A
- stage of tissue reorgonization
16
Q
TYPES OF PUPA
A
- decticous
- adecticous
17
Q
PUPA: DECTICOUS
A
- movable mandibles
18
Q
PUPA: ADECTICOUS
A
- non-movable mandible
- could be exarate or obtect
19
Q
ADECTICOUS PUPA: EXARATE
A
- appendages project freely from body
20
Q
ADECTICOUS PUPA: OBTECT
A
- appendages cemented to body
- cuticle is heavily sclerotized
21
Q
PUPA: PHARATE
A
- special type of pupa
- mobile
- aquatic
- mosquitoes (Diptera) or caddisflies (Trichoptera)
22
Q
ADULT STAGE
A
- responsible for reproduction
- dispersal stage
23
Q
METAMORPHOSIS
A
- animal develops physically after birth
- abrupt changes in body structure
- changes in nutritional source and behavior
24
Q
SOURCE OF METAMORPHOSIS
A
- hormonal control
- through spatial and temporal patterns of hormonal expression
25
JUVENILES
1. immature stage
26
OTHER REPRODUCTION IN INSECTS
1. bisexual
2. parthenogenesis
3. polyembryony
4. paedogenesis
27
BISEXUAL REPRODUCTION
1. male and female mate
2. oviparity: female produce and lay eggs
3. viviparity: female produce eggs and lay live young
28
PARTHENOGENESIS
1. reproduction without fertilization of egg cells
2. aphids in tropics; temperate countries during summer
29
POLYEMBRYONY
1. more than one young hatch from one egg
2. braconid wasp (hymenoptera)
30
PAEDOGENESIS
1. larva also reproduces
2. hymenoptera
