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2017 ; 136
(2
): 233-240
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Histology and ultrastructure of the integumental chromatophores in tokay gecko
(Gekko gecko) (Linnaeus, 1758) skin
#MMPMID28553007
Szyd?owski P
; Madej JP
; Mazurkiewicz-Kania M
Zoomorphology
2017[]; 136
(2
): 233-240
PMID28553007
show ga
This paper describes the relationship between the arrangement of dermal
chromatophores in tokay gecko (Gekko gecko) skin and the formation of wild-type
colouration, with emphasis on the ultrastructure of chromatophores. The samples
of the tokay gecko skin were collected from wild-type colouration adult
specimens. Morphology and distribution of chromatophores was determined by using
light microscopy and transmission electron microscopy. The present study revealed
that orange/red coloured skin of G. gecko contained erythrophores, which were
located under basement membrane, and usually comprised deeper situated
iridophores and melanophores which were form single layer with iridophores or
were occupying the deepest region of dermis. In orange/red coloured skin,
erythrophores were the predominant chromatophores. However in blue areas these
cells occurred in small numbers or were not noticed at all. In blue pigmented
areas predominated iridophores and melanophores. Iridophores were found just
under basement membrane, but this superficial location of iridophores occured
only in areas without erythrophores. Distribution of erythrophores, melanophores,
and iridophores determines the characteristic blue colour of the tokay gecko skin
with orange/red dots on the whole body.