The evolution of iris colour in relation to nocturnality in owls

2018 ◽  
Vol 49 (12) ◽  
Author(s):  
A. Passarotto ◽  
D. Parejo ◽  
A. Cruz‐Miralles ◽  
J. M. Avilés
Keyword(s):  
Iris Colour

Quantitative colour analysis for iris colour classification

2012 ◽  
Vol 35 ◽  
pp. e6
Author(s):  
Magda L. Michna ◽  
John R. Buch
Keyword(s):  
Iris Colour

scholarly journals Evolution of iris colour in relation to cavity nesting and parental care in passerine birds

2017 ◽  
Vol 13 (1) ◽  
pp. 20160783 ◽  
Author(s):  
Gabrielle L. Davidson ◽  
Alex Thornton ◽  
Nicola S. Clayton
Keyword(s):  
Parental Care ◽  
Eye Gaze ◽  
Dependent Manner ◽  
Passerine Birds ◽  
Cavity Nesters ◽  
Cavity Nesting ◽  
Ideal System ◽  
Nesting Behaviour ◽  
Gaze Sensitivity ◽  
Iris Colour

Strong selection pressures are known to act on animal coloration. Although many animals vary in eye colour, virtually no research has investigated the functional significance of these colour traits. Passeriformes have a range of iris colours, making them an ideal system to investigate how and why iris colour has evolved. Using phylogenetic comparative methods, we tested the hypothesis that conspicuous iris colour in passerine birds evolved in response to (a) coordination of offspring care and (b) cavity nesting, two traits thought to be involved in intra-specific gaze sensitivity. We found that iris colour and cooperative offspring care by two or more individuals evolved independently, suggesting that bright eyes are not important for coordinating parental care through eye gaze. Furthermore, we found that evolution between iris colour and nesting behaviour did occur in a dependent manner, but contrary to predictions, transitions to coloured eyes were not more frequent in cavity nesters than non-cavity nesters. Instead, our results indicate that selection away from having bright eyes was much stronger in non-cavity nesters than cavity nesters, perhaps because conspicuous eye coloration in species not concealed within a cavity would be more visible to predators.

scholarly journals Iris Colour in Mongolism

BMJ ◽  
1958 ◽  
Vol 1 (5070) ◽  
pp. 563-564 ◽  
Author(s):  
J. M. Berg
Keyword(s):  
Iris Colour

Dactylographic pattern in relation to blood group & Iris colour

2016 ◽  
Vol 38 (2) ◽  
pp. 171
Author(s):  
Shouvanik Adhya ◽  
Soumyajyoti Bandyopadhyay ◽  
Sourav Biswas
Keyword(s):  
Blood Group ◽  
Iris Colour

A Novel Iris Colour Classification Scale

2014 ◽  
Vol 4 (15) ◽  
pp. 2525-2534 ◽  
Author(s):  
Olga Simionescu
Keyword(s):  
Iris Colour

A new species of blue-eyed Leptobrachium (Anura: Megophryidae) from Sumatra, Indonesia

Zootaxa ◽  
2010 ◽  
Vol 2395 (1) ◽  
pp. 34 ◽  
Author(s):  
AMIR HAMIDY ◽  
MASAFUMI MATSUI
Keyword(s):  
New Species ◽  
Endemic Species ◽  
Juvenile Stages ◽  
Fourth Species ◽  
A New Species ◽  
Iris Colour

A new megophryid species of Leptobrachium is described on the basis of three specimens collected from Kubu Perahu, Lampung Province, Sumatra, Indonesia. The new species, L. waysepuntiense sp. nov. is distinguished from all other congeners by the colour of iris, which is totally light bluish in adult and greyish in juvenile stages. It is similar to Bornean endemic species in the absence of dark markings around groin, and particularly to L. gunungense in the very small size of femoral gland. It is the fourth species of Leptobrachium recorded from Sumatra, and its discovery underscores the under estimated diversity of amphibians on Sumatra. Variation in the pattern of iris colour in Leptobrachium is discussed.

Classification of iris colour: review and refinement of a classification schema

2011 ◽  
Vol 39 (5) ◽  
pp. 462-471 ◽  
Author(s):  
David A Mackey ◽  
Colleen H Wilkinson ◽  
Lisa S Kearns ◽  
Alex W Hewitt
Keyword(s):  
Iris Colour
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