Urška Sivka (Author), Karel Halačka (Author), Simona Sušnik Bajec (Author)

Abstract

Despite being genetically very closerly related, the marble trout Salmo marmoratus and the brown trout Salmo trutta exibit marked phenotypic differences, particularly with regard to skin pigmentation. Histological analysis of skin from the head and gill cover of differently aged individuals of the two species was carried out in order to characterize differences in skin structure. The basic structure of skin of the individuals studied corresponded with that described for other salmonids, though the head epidermis was somewhat thicker in S. marmoratus than in S. trutta, thickening with age in both species. Numerous secretory goblet cells and sporadic secretory sacciform cells were observed in the upper and middle part of the epidermis in both species. Melanophores were present in both species only in the dermis, and were bigger in S. marmoratus and present at lower average density than in S. trutta, and more or less constant across all age classes. In adult S. marmoratus with fully established marble pigmentation, light areas at low density with small (i.e. aggregated) melanophores were present, while in S. trutta melanophores were more uniformly distributed.

Keywords

ribe;postrvi;Salmo marmoratus;Salmo trutta;morfologija;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 597.2/.5
COBISS: 3081352 Link will open in a new window
ISSN: 0239-8508
Views: 1366
Downloads: 292
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Other data

Secondary language: Unknown
Type (COBISS): Not categorized
Pages: str. 255-262
Volume: ǂVol. ǂ50
Issue: ǂno. ǂ2
Chronology: 2012
ID: 1482533