gan wenjin eepai group, xtbg how do spiders to be the spiderman?
TRANSCRIPT
![Page 1: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/1.jpg)
Gan Wenjin
EEPAI Group, XTBG
How do spiders to be the Spiderman?
![Page 2: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/2.jpg)
The Superpower of Spiderman
![Page 3: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/3.jpg)
Vision
![Page 4: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/4.jpg)
(Lim & Daiqin Li, 2007)
![Page 5: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/5.jpg)
(David Edwin Hill, 2010)(David Edwin Hill, 2010)
![Page 6: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/6.jpg)
(Photographs by Ron Atkinson)
![Page 7: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/7.jpg)
(Lim & Daiqin Li, 2007)
![Page 8: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/8.jpg)
Silk
SCIENCEphotoLIBRARY
![Page 9: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/9.jpg)
(Photographs by Ron Atkinson)
![Page 11: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/11.jpg)
(Ron Atkinson)
![Page 12: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/12.jpg)
What do spiders use their silk for?
![Page 13: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/13.jpg)
Web
![Page 14: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/14.jpg)
http://www.oocities.org/brisbane_spiders
![Page 15: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/15.jpg)
Orb-web Frame Diagram
http://www.oocities.org/brisbane_spiders
![Page 16: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/16.jpg)
Brain
![Page 17: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/17.jpg)
Decoration-building Behavior
![Page 18: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/18.jpg)
Web-decorating behavior
Spiral stabilimentum built by Cyclosa
spider
Cross-like stabilimentum spum by Argiope adults
Vertical-linear stabilimentum produced by other Argiope
species
![Page 19: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/19.jpg)
Silk-decoration built by same species
(Photographs by Daiqin Li)
![Page 20: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/20.jpg)
Forms of web decorations
(Herberstein et al. 2000)
![Page 21: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/21.jpg)
Web decorations by Cyclosa sp.
Silk
Detritus
Egg sacs
Prey remains
Model system
![Page 22: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/22.jpg)
WHAT…?
HOWWHY
![Page 23: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/23.jpg)
Self-secreted materials(SS)
SilkEgg sacs Molt
Cyclosa octotuberculata
![Page 24: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/24.jpg)
Collected materials(CO) Dry leaf
Green leaf
Prey remains BarkFlower pedals
Fibers
![Page 25: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/25.jpg)
2 = 132.4, df = 2, P < 0.0001
Materials
![Page 26: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/26.jpg)
Below 2% Discoid 5%
Linear 85%
Patterns
Above 8%
2 =385.2, df=3, P<0.0001
![Page 27: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/27.jpg)
WHAT
HOW…?
WHY
Where Cyclosa spiders collect decorating materials to decorate their webs?
![Page 28: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/28.jpg)
Experimental procedure
20 cm5 cm
20 cm
• Monitored the webs continuously for six days.
• Variables recorded:1. No. spiders decorating
webs.2. Mean No. pieces of paper
used.3. Mean decoration length.
![Page 29: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/29.jpg)
0
10
20
30
40
Bottom Web Both Bottom Web Both
Adult Juvenile
Mea
n d
ecora
tion l
ength
(m
m)
Fig.1 Mean ( s.e.) cumulative decoration
length(mm) built by each experimental group of
spiders at the end of experiment in day5.
Results
0
20
40
60
80
100
Bottom Web Both Bottom Web Both
Adult Juvenile
% l
eaf
frag
emen
ts u
sed t
o
dec
ora
tion
Fig.2 Mean ( s.e.) cumulative number of dry-
leaf fragments used by each experimental group of
spiders to decorate their webs in day5.
![Page 30: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/30.jpg)
WHAT
HOW…?
WHY
How Cyclosa spiders collect materials to decorate their webs?
![Page 31: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/31.jpg)
Color
![Page 32: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/32.jpg)
Texture
![Page 33: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/33.jpg)
F3=2.417 P=0.70
F3=1.062 P=0.368
F3=1.686 P=0.174
• Fig.3 Number of different positions of different textures fragments of web decorations built by spiders in the day5.• Effect of different color fragments on the web and decoration traits in day5: F3 = 0.038, P=0.990 (ANOVA)
Texture
![Page 34: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/34.jpg)
Weight
• Table 1 Effect of different weight fragments on the web and decoration traits in day5.
FactorWeb and decoration
traitsF 4 P
Weight CA 0.7930 0.5315TTL 0.8859 0.4741MH 0.1276 0.9722
Number of fragments 20.1639 <0.001
• Fig.4 Total number of spiders used 5 different weight fragments in day5.
![Page 35: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/35.jpg)
WHAT
HOW
WHY…?
![Page 36: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/36.jpg)
Fig. 5 Normalized reflectance spectra of Cyclosaoctotuberculata spiders, decorations and vegetation backgrounds
Plant detritus
![Page 37: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/37.jpg)
A cost of web decoration: predator-attraction
![Page 38: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/38.jpg)
![Page 39: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/39.jpg)
The Super-organ of Spiders
![Page 40: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/40.jpg)
![Page 41: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/41.jpg)
Reference
• http://en.wikipedia.org/wiki/Spider
• http://www.oocities.org
• hhttp://www.arachnology.be/Arachnology.html
• http://www.findaspider.org.au
• Biology of Spiders, Folix, Oxford Express
• A Spider’s World: Senses and Behaviour, Barth, F.G., Springer-Verlag, Berlin
• Animal behavior (9th edition), John Alcock
![Page 42: Gan Wenjin EEPAI Group, XTBG How do spiders to be the Spiderman?](https://reader030.vdocuments.mx/reader030/viewer/2022032705/56649dbb5503460f94aad2a5/html5/thumbnails/42.jpg)
Thank you!