dichromatism


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dichromatism

[dī′krō·mə‚tiz·əm]
(medicine)
Partial color blindness in which vision is apparently based on two primary colors rather than the normal three.
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References in periodicals archive ?
50] at sex change and for enhancing the description of the growth of females and males are likely to be applicable to many of the numerous species that exhibit a similar form of sexual dichromatism.
1995) first documented sexual dichromatism in spotted sand bass as males with high contrast dark bars over a white background with a white chin, whereas females were overall darker with dark bars over a medium toned green-gray background with a yellow chin.
Such a well-defined and striking ephemeral sexual dichromatism has not been previously reported in Apogonidae.
Sexual dichromatism (Medveditsyna, 1962; Rutenberg, 1962) and behavioral changes in males (Nichol and Somerton, 2002; Lauth et al.
Conversely, monochromatic fishes often exhibit patterns of seasonal sexual dichromatism during the spawning season, and these color patterns are only adopted by actively breeding individuals (Thresher 1984; Kodric-Brown 1998).
Both sexes are illustrated for species that exhibit sexual dichromatism, such as wrasses, parrotfishes, and triggerfishes.
The pronounced differences in color of the anal fin in this species (see above) indicate the possibility of sexual dichromatism but determining the sex of large Caranx is best done with freshly caught specimens.
4:20 SEXUAL DICHROMATISM AND SPAWNING BEHAVIOR OF THE KELP BASS, PARALABRAX CLATHRATUS, FROM SANTA CATALINA ISLAND, CALIFORNIA.
Sexual dichromatism of the plumage and integuments of birds is often generated by carotenoid pigmentation (e.
A number of apogonids display temporary dichromatism during courtship, others do not.