Morphological differences in the skin of marble trout Salmo marmoratus and brown trout Salmo trutta

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

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.

• Language: English
• Keywords: ribe, postrvi, Salmo marmoratus, Salmo trutta, morfologija
• Work type: Not categorized
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Year: 2012
• Number of pages: Str. 255-262
• Numbering: Vol. 50, no. 2
• PID: 20.500.12556/RUL-50835
• UDC: 597.2/.5
• ISSN on article: 0239-8508
• COBISS.SI-ID: 3081352
• Publication date in RUL: 10.07.2015

Record is a part of a journal

• Title: Folia histochemica et cytobiologica
• Shortened title: Folia Histochem. Cytobiol.
• Publisher: Vesalius University Medical Publisher
• ISSN: 0239-8508
• COBISS.SI-ID: 25469952