gabrielle solomon dept. of biodiversity & conservation biology university of the western cape p....
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Gabrielle Solomon
Dept. of Biodiversity & Conservation BiologyUniversity of the Western Cape
P. Bag X17, Bellville 7535, RSA [email protected]
BCB Honours, Science Method 703 - Research proposal outline,
BCB UWC,23 February 2011, Gabrielle
Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Introduction
Sexual selectivity based onmale colour patternsis common in many species of fish
(m
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Introduction
Extensive research has been conducted on different male colour patterns in the common guppy (Poecilia reticulata)
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Introduction
The common guppy is a good exampleof the balance betweensexual selection (conspicuousness)and natural selection (crypsis)
(Millar et al. 2006)
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Introduction
The general pattern of colour and contrastin males are positively related tofemale guppy preference
Brooks and Endler (2001)
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BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Introduction
Male colouring and pattern quantified in terms of area and number show thatfemales respond to males withmore complex patterns, and withmore orange carotenoids
Nicoletto (1993)
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BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Introduction
Female guppies prefer maleswith more orangeand more black colouring
Brooks and Couldridge (1999)
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
wi
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Introduction
Endler’s livebearers are a wild strain of guppy only recently described (Poeser et al 2005)
Little research has been done
No research on sexual selectivityand male colour patterning
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BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Approach
Compare female response to two forms of male Endler’s:
one from Rio de Oro andone from Puerta la Cruz
E one f
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Hypothesis
More complex male colour patterns and higher colour intensitiesattract more females
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Key question
Which male attracts more females, the one from Rio de Oro or the one from Puerta la Cruz?
o
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Methods The most colourful and complexly patterned individual from each form will be chosen and placed in a plastic jar and placed next to the tank of females
iv
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Tank with female Endler’s
Male Endler – Rio de Oro
Male Endler – Puerta la Cruz
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Methods The tank will be videotaped
Pattern of female clusteringon either side of the tanknoted and recorded
sterin
BCB Honours, Science Method 703 - Research proposal outline,
BCB UWC,23 February 2011, Gabrielle
Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)
Terns in att
BCB Honours, Science Method 703 - Research proposal outline, BCB UWC,23 February 2011, Gabrielle Solomon
Role of male colour patterns in attracting females in Endler’s livebearers (Poecilia wingei)