Bonus 1 due W 2/28

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Bonus 1 due W 2/28
I hope she likes my feathers because I am tired
of dragging them around everywhere.
2
Am I the only one? Am I better off helping with
these kids or should I mate with someone else?
Is this the best I can do? Maybe I can find
someone with better genes or more genetic
diversity.
3
1
Which is male?
2
4
1
Which is male?
2
5
Female grizzly bears cannot reproduce while
lactating. Therefore they can only reproduce
every once every 3 years
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this leads to competition between males
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Sexual Dimporphism differences between males
and females
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Average height/weight by sex in U.S.
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Ratio of Weight Male/Female
M/F
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Bonobos
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Primates have different reproductive stratagies
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Ratio of Weight Male/Female
M/F
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Testes Compared to Overall Weight
Testicle size (oz) per body weight (lbs)
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Pipefish related to seahorses
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Pregnant Male Males care for developing eggs
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Males care for developing eggs
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The Measurement of Sexual Selection Using
Batemans Principles An Experimental Test in
the Sex-Role-Reversed Pipefish Syngnathus typhle
(2005) Integrative and Comparative Biology,
45874884 Adam G. Jones, Gunilla Rosenqvist,
Anders Berglund, and John C. Avise
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frequency
number of mates
Jones et al. Fig. 1
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frequency
number of mates
Jones et al. Fig. 1
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frequency
number of mates
Jones et al. Fig. 1
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The sex ratio affects who will successfully
reproduce. Pipefish females are more affected.
Jones et al. Fig. 1
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number of individuals
body length (mm)
Jones et al. Fig. 4
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number of individuals
body length (mm)
Jones et al. Fig. 4
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medium sized female pipefish are most successful
at reproducing while size is less critical for
male pipefish
Jones et al. Fig. 4
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Different reproductive strategies lead to
differences in sexual dimorphism.