Comparative ultrastructure of the zona radiata from eggs of six species of salmonids
| Autor: | M. K. Schmehl, E. F. Graham |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
endocrine system
Histology Trout animal diseases Radiata Zoology Pathology and Forensic Medicine Brown trout Species Specificity Salmon otorhinolaryngologic diseases Animals Salmo Salmonidae Salvelinus biology urogenital system Cell Biology Anatomy biology.organism_classification Microscopy Electron embryonic structures Microscopy Electron Scanning Oocytes Oncorhynchus Female Rainbow trout |
| Zdroj: | Cell and Tissue Research. 250 |
| ISSN: | 1432-0878 0302-766X |
| DOI: | 10.1007/bf00218942 |
| Popis: | The zona radiata from unactivated and activated eggs from chinook salmon (Oncorhynchus tshawytscha), chum salmon (O. kisutch), pink salmon (O. gorbuscha), brown trout (Salmo trutta), rainbow trout (S. gairdneri) and lake trout (Salvelinus namaycush) were examined using scanning and transmission microscopy. The zona radiata in all species examined consisted of an outer adhesive coating, a thin densely staining zona radiata externa with pore canal plugs and a thick, fibrous zona radiata interna with a fibrous network on the inner surface. There was a two-layer adhesive coating over the zona radiata externa in all species except pink salmon in which only one layer was observed. There were structural differences among species in the adhesive layer, zona radiata externa and plugs in the pore-canal openings. |
| Databáze: | OpenAIRE |
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