Specific Features of the Ultrastructure of Mesonephros of Smolts of the Atlantic Salmon Salmo salar L. (Baltic Sea population) and Brown Trout Salmo trutta L.

Флерова, Е. А.; Сендек, Д. С.; Yurchenko, Victoria

doi:10.1134/s1995082920030062

Cited by 5 publications

(22 citation statements)

References 10 publications

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“…The width of the cisterns of the scabrous endoplasmatic reticulum -a trait that characterizes the synthetic activity of plasmatic cells -somewhat exceeded the values determined for smolts Salmo salar and S. trutta. The number of phagosomes on the sections of macrophages was twice as high as that on the sections of cells of S. salar and was comparable to this parameter in cells of S. trutta (Flerova et al, 2020).…”

Section: Figmentioning

confidence: 55%

“…It has to be noted that according to the number of granules on the section of granulocytes, smelt is closer to S. salar and S. trutta at the stage of smoltification than freshwater Esox lucius (Flerova & Balabanova, 2013;Flerova et al, 2020). At the same time, ultrastructure and amount of granules of neutrophils of smelt corresponded to such in E. lucius (Flerova & Balabanova, 2013).…”

Section: Figmentioning

confidence: 82%

“…In general, sizes of leukocyte cells of smelt corresponded to blood cells of the mesonephros of smolts of S. salar (Flerova et al, 2020).…”

Section: Figmentioning

confidence: 85%

“…The cells with radially positioned vesicles, found in the interstitium of mesonephron of smelt, had the same structure pattern as such type of cells described for smolts of S. trutta and freshwater fish Oncorhynchus mykiss, E. lucius. Size of cells with radially arranged vesicles corresponded to such value of cells of S. salar (Balabanova, 2006;Flerova, 2017;Flerova et al, 2020). Ultrathin structure of ion-transporting cells overall corresponded to S. salar and S. trutta at the stage of smoltification (Flerova et al, 2020).…”

Section: Figmentioning

confidence: 97%

“…This is a group of anadromous, semi-anadromous and freshwater fishes of the Northern Hemisphere that has a number of primitive features in their structure. It has to be noted that in most studies on Salmoniformes undergoing anadromous mutations, the central aspect of studying the mesonephros is solving questions related to the process of smoltification of anadromous Salmoniformes (Mizuno et al, 2001;Björnsson & Bradley, 2007;Flerova et al, 2020). There are fragmentary surveys related to adaptive changes in the tubules of the nephron occurring in juvenile fish of the Pacific Ocean during migration to the sea, and also of Salmonidae egg producers during spawning migrations (Maksimovich et al, 2000;Maksimovich, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Structural features of the mesonephros of semianadromous fish on the example of the European smelt (Osmerus eperlanus)

Флерова

2021

Regul. Mech. Biosyst.

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At present, special attention is drawn to the study of the adaptation of aquatic organisms to a complex of environmental factors precisely at the cellular level. It is very important to study the structural and functional features of the kidney, which not only plays a key role in osmoregulation, but also makes a significant contribution to maintaining homeostasis at the level of functioning of a single nonspecific defense system of the body. In this aspect, the study of species belonging to a unique ancient group, united in the order salmoniformes, is highly relevant. Using the methods of light and electron microscopy, we investigated the morphology and ultrastructure of the mesonephros of the population of the semianadromous ecological form European smelt Osmerus eperlanus inhabiting the Gulf of Finland of the Baltic Sea and performing spawning migrations in the Luga River of the Leningrad Region. The general scheme of the trunk kidney organization is given, the structural features and the ratio of leukocytes and structures of the smelt nephron are revealed. It is shown that the development of hematopoietic tissue in the mesonephros, the number of mature forms of granulocytes are systematic signs which do not depend on the ecology of the species. The ratio of leukocytes, the width of the cisterns of the rough endoplasmic reticulum of plasma cells, the structure and number of granules in granulocytes are associated with the peculiarities of the functioning of the cellular link of the immune system under certain conditions of the species habitat. The ultrafine structure of the ion-transporting interstitial cells, as well as the ultrastructural features found in the smelt nephron, can be considered cytological markers of smelt adaptation to a semianadromous lifestyle.

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Section: Figmentioning

confidence: 55%

Section: Figmentioning

confidence: 82%

“…In general, sizes of leukocyte cells of smelt corresponded to blood cells of the mesonephros of smolts of S. salar (Flerova et al, 2020).…”

Section: Figmentioning

confidence: 85%

Section: Figmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Structural features of the mesonephros of semianadromous fish on the example of the European smelt (Osmerus eperlanus)

Флерова

2021

Regul. Mech. Biosyst.

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Unique and ancestral features in trunk kidney microanatomy and ultrastructure of omul Coregonus migratorius

Флерова

Morozov

Yurchenko

et al. 2022

Journal of Fish Biology

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This study presents novel data on the microanatomy and ultrastructure of the omul Coregonus migratorius trunk kidney. Adult individuals of C. migratorius were sampled in the Barguzin Bay of Lake Baikal. Active leuko-and erythropoiesis were found in the interstitium of the mesonephros. For the first time, cells with radially arranged vesicles have been described in the renal interstitium of C. migratorius. The quantitative characteristics of blood cells and ultrastructural parameters of leukocytes reflected the functioning of the non-specific defence system in the organism. The share of the renal interstitium, morphological diversity of the epithelial cells of the nephron tubules, the ultrastructural features of the renal corpuscles and nephron tubules and the number of mitochondria in leukocytes and ion-transporting cells were typical for representatives of the whitefish Coregonus lavaretus complex and thus considered ancestral features of the present-day C. migratorius population reflecting its adaptive potential to living in an ultra-deep Lake Baikal.

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Peculiarities of the Mesonephros Cell Ultrastructure of the Prussian Carp Carassius gibelio (Cypriniformes, Cyprinidae) under Various Salinity Conditions

Флерова

Evdokimov

2022

Biol Bull Russ Acad Sci

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Specific Features of the Ultrastructure of Mesonephros of Smolts of the Atlantic Salmon Salmo salar L. (Baltic Sea population) and Brown Trout Salmo trutta L.

Cited by 5 publications

References 10 publications

Structural features of the mesonephros of semianadromous fish on the example of the European smelt (Osmerus eperlanus)

Structural features of the mesonephros of semianadromous fish on the example of the European smelt (Osmerus eperlanus)

Unique and ancestral features in trunk kidney microanatomy and ultrastructure of omul Coregonus migratorius

Peculiarities of the Mesonephros Cell Ultrastructure of the Prussian Carp Carassius gibelio (Cypriniformes, Cyprinidae) under Various Salinity Conditions

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