Aquatic Entomology Lecture 4 - Locomotion

0.0(0)
studied byStudied by 0 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/21

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

22 Terms

1
New cards

muscles in the leg attach to the thorax

extrinsic muscles

2
New cards

entirely in leg

intrinsic muscles

3
New cards

(joint) one point of articulation: can rotate

monocondylic

4
New cards

(joint) two points of articulation: only move in one plane

dicondylic

5
New cards

monocondylic joints (1)

  • tibia-tarsus

6
New cards

dycondylic joints (4)

  • Thorax-coxa

  • Coxa-trochanter

  • Trochanter-femur

  • Femur-tibia

7
New cards
<p>How do insects walk</p>

How do insects walk

legs are FLEXXED which lifts the tip OFF the ground. The leg can also be EXTENDED which pushes the leg outward which creates thrust

each side is counterbalance by the otherside to insects always have 3 points on the ground

8
New cards

How insects move in water (4)

  • Swimming with jointed appendages

  • Body

9
New cards
<p>Swimming with jointed appendages</p>

Swimming with jointed appendages

  • Assumption: High Re

  • Legs row and act as paddles —> result in motion in the opposite way

1.) Perfect transverse phase synchrony

2.) Alternative-leg swimming

10
New cards

Swimming leg modification: Oar like (Modifications, Mechanisms (2))

Modification: Flattened segments and addition of swimming hairs

Mechanism:

1.) Power stroke: Creates thrust, maximizing surface area, /\

2.) Recovery: Decreases surface area, V

11
New cards

Swimming with legs at surface (Challenge, ORGANISM)

Challenges: Can create waves that lower efficiency)

Organism: Whirling Beetle

12
New cards

Swimming via undulation (mechanism)

  • Move body (up and down or side to side)

  • Insects with and without legs can use this method

13
New cards

Jet Propulsion (Method, ORGANISM (2))

Organism: Larval dragonflies and some damselfies

  • usually walks

  • uses jet propulsion for emergencies

    • water drawn into hindgut and ejected forcefully

14
New cards
<p>Vertical movement using buoyancy (Organism)</p>

Vertical movement using buoyancy (Organism)

  • Moving up and down the water colum using stored air

  • Organism: Phantom Midge Larvae: Chaoboridae

15
New cards

Types of movement on the water surface (9)

  • Surface walking, rowing, running, jumping

  • Skimming, sailing skating

  • Meniscus climbing

  • Marangoni propulsion

16
New cards
<p>Rowing and jumping (Organism)</p>

Rowing and jumping (Organism)

Gerrids

17
New cards
<p>Walking (organism)</p>

Walking (organism)

Hydrometridae (Water measurers)

18
New cards

Insects stay in contact with water while flying to help with support

Skimming

19
New cards

Insects use wings as sails

Sailing

20
New cards
<p>Use gills to hang down from water surface. The gills act as a foot along surface</p>

Use gills to hang down from water surface. The gills act as a foot along surface

Skating

21
New cards
<p>Curve the surface film and create forces to drive them up to meniscus (organism)</p>

Curve the surface film and create forces to drive them up to meniscus (organism)

Maniscus climbing

organism: thirps

22
New cards

Exude surfactant which reduces the surface tension. This results in a force that propels them forwards. (organism)

Marangoni propulsion