1 arthropods chapter 31 diversity of arthropods –arachnids –crustaceans –centipedes and...
TRANSCRIPT
![Page 1: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/1.jpg)
1
Arthropods Chapter 31
• Diversity of Arthropods
–Arachnids
–crustaceans
–Centipedes and Millipedes
–Insects• What is an Arthropod? • Characteristics of Arthropods
![Page 2: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/2.jpg)
2
Diversity of Arthropods• Arachnids
• Crustaceans
• Centipedes / Millipedes
• Insects
![Page 3: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/3.jpg)
3
What is an Arthropod?
• Characteristics of Arthropods
–Invertebrate
–bilateral
–exoskeleton
–appendages
(jointed Appendages)
![Page 4: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/4.jpg)
4
Segmentation in Arthropods
• Head
• Thorax
• Abdomen
![Page 5: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/5.jpg)
5
Body Segment fused
• Cephalotharax
• Abdomen
![Page 6: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/6.jpg)
6
Exoskeleton
• Success of group attributed to this features
• hard thick outer layer made of protein called chitin
• Used as armor protection and support for muscle attachments
• Problems with exoskeleton
![Page 7: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/7.jpg)
7
Jointed Appendages
• Multiple uses:
senses, walking, feeding
and mating• Joints allow more powerful
movement• allow appendages to be used in
multiple ways
![Page 8: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/8.jpg)
8
Why they must Molt?
• Exoskeleton is heavy and bulky
• restricts speed of movement
• require that the exoskeleton be shed to allow growth (molting)
• During molting which may require a lot of time the animal is vulnerable
![Page 9: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/9.jpg)
9
Gas Exchange
Book Lungs
Gills
Tracheal Tubes
![Page 10: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/10.jpg)
10
Arthropod Senses
• Movement, sound, or chemical can be detected by ANTENNAE - pheromomes
• Detect light with SIMPLE EYES
• Motion and some colors are detected by the COMPOUND EYES
![Page 11: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/11.jpg)
11
Nervous System
• Well developed :
– double ventral nerve cord,
– anterior brain,
–several ganglia - each segment has a set to help control the functions
![Page 12: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/12.jpg)
12
Complex body systems• Open circulatory system bathes the
organs• Complex digestive system• Mouth parts have a great variety
–holding
–chewing
–sucking/ biting• Waste removed by malpighian tubules
![Page 13: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/13.jpg)
13
Sucking mouth parts
![Page 14: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/14.jpg)
14
Butterfly mouth part
![Page 15: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/15.jpg)
15
Bee mouth part
![Page 16: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/16.jpg)
16
Spider Fangs
![Page 17: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/17.jpg)
17
More Spider fangs
![Page 18: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/18.jpg)
18
Reproduction
• Sexual reproduction
• Some are hemaphrodites
• Parthenogenesis
![Page 19: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/19.jpg)
19
Luber Grasshopper
![Page 20: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/20.jpg)
20
Walking Stick
![Page 21: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/21.jpg)
21
Special Mouth Parts
![Page 22: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/22.jpg)
22
Butterfly
![Page 23: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/23.jpg)
23
Crayfish’s External anatomy
-cephalothorax - swimmeret
- abdomen - uropods
-Walking legs - mouth parts
-claws(cheliped) mandible
-antenna maxilla
-antennules maxilliped
![Page 24: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/24.jpg)
24
Crayfish’s Internal anatomy
• Digestive Circulatory
– Esophagus - open system
– stomach heart
• grastric mill dorsal artery
– intestine
– anus
![Page 25: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/25.jpg)
25
Crayfish’s Internal Anatomy 2
• Respiratory system– Gills– legs– bailers
(maxilla)
• Excretory sytem– green gland– green gland pore
![Page 26: 1 Arthropods Chapter 31 Diversity of Arthropods –Arachnids –crustaceans –Centipedes and Millipedes –Insects What is an Arthropod? Characteristics of Arthropods](https://reader036.vdocuments.site/reader036/viewer/2022062322/56649f335503460f94c4fd73/html5/thumbnails/26.jpg)
26
Questions A (100 words each)
1.Compare the digestive, respiratory, and reproductive system of Arachnids and Grasshoppers
2. What are 5 anatomical characteristics that only Arachnids have?
3. How do joints affect the speed and power an animal has?