harvestmen Multiple weapon morphs within single species Chrissie Painting Anna Probert Daniel Townsend Greg Holwell University of Auckland cpaintingnz chrissiepaintinggmailcom Animal Weapons ID: 346567
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Slide1
Weapon polymorphism in
harvestmen:Multiple weapon morphs within single species
Chrissie Painting, Anna Probert, Daniel Townsend, Greg HolwellUniversity of Auckland@cpaintingnzchrissiepainting@gmail.comSlide2
Animal Weapons
James Lindsey
Udo Schmidt
Didier
Descouens
Paulmaz
JwanamakerSlide3
Dimorphism
Trimorphism Genetic polymorphism
Polyphenism
Rowland &
Emlen
2012
Photo: Alex Wild
Photo: Gerhard Hofmann Slide4
Detecting dimorphism & trimorphism
Buzatto et al 2014
Evolutione.g. exaggerated apophyses on coxa of neotropical harvestmen Slide5
Diversity in NZ
Neopilionid
harvestmenSlide6
Pantopsalis cheliferoides
“Long-slender morph”
“Short-broad morph”
“Small-slender morph”Slide7
Assigning male morphs
Chelicera length Slide8
Assigning male morphs
Chelicera width Slide9
Trimorphism revealed by inspecting two measures of weapon size Slide10
Fighting strategies
Long-slender
Short-broad Slide11
Fighting strategies
Long-slender
Short-broad
Small-slender
No observations
Sneaking
behaviour
? Slide12
How are these morphs maintained?
Body size
Weapon size
Conditional threshold
Genetic polymorphism
Small weapon
Exaggerated morph 1
Exaggerated morph 2
Rock-paper-scissors game?
Stickpen
: Wikipedia commonsSlide13
Acknowledgements
Long nights in the field: Caleb Nicholson, Leanne Powell, Leilani Walker, Tom Saunders Anne & Alistair Stubbs for access to their landCollections: John Early,
Dhahara Ranatunga, Grace Hall, Cor Vink, Matthew Shaw, Chris Lyal, Luca BartolozziFunding: UoA
FRDF Post Doc fellowship
Illustrations: Emma
Scheltema
Discussion: Bruno
Buzatto
,
Mariella
Herbertstein
Slide14
chrissiepainting@gmail.com
@cpaintingnzhttps://chrissiepainting.wordpress.com