Protective systems of immunocompetent organs in fishes from different ecological and systematic groups

Lapirova, T. B.; Флерова, Е. А.; Yurchenko, Victoria; Morozov, Alexey A.

doi:10.1134/s0032945217030080

Cited by 8 publications

(11 citation statements)

References 11 publications

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“…It was reported earlier (Keyster, 2009) that in vendace Coregonus albula from different parts of Lake Beloye, the percentage of neutrophils varied from 41% to 88%, which made 74% on average. In grayling, a WBC differential, in general, was similar to that found in the Northern pike (Lapirova et al, 2017).…”

Section: Discussionsupporting

confidence: 66%

“…These endpoints are considered components of an "early-warning system" for fish health and thus can be used in further studies addressing the health status of the grayling population in the Unya River. In an attempt to conduct a discussion of the results from a comparative-evolutionary perspective, we used data obtained earlier for the grayling's close freshwater relative, the Northern pike Esox lucius (Lapirova et al, 2017). Northern pike is a member of the Esociformes, the sister order to the Salmoniformes within the Protacanthopterygii superorder, and it takes an ancestral position to Coregoninae, Thymallinae, and Salmoninae (Yasuike et al, 2010;Rondeau et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Yet, there were some differences found in the microanatomy of the mesonephros between the Protacanthopterygii members. In the mesonephros of grayling, the hematopoietic tissue was less developed in comparison with that of the Northern pike (Flerova, 2017;Lapirova et al, 2017). It seems that distinctive features of the anatomical organization of the mesonephros are associated with the processes of blood cell formation in the renal-spleen-type hematopoiesis, and, within the Protacanthopterygii superorder, are evident at the order level.…”

Section: Discussionmentioning

confidence: 99%

“…It was reported earlier (Kocabatmaz & Ekingen, 1987) that in the mesonephros hematopoietic tissue of a salmonid member, rainbow trout Salmo gairdneri, only one type of granulocyte, the neutrophils, was found. However, in the mesonephros of the Northern pike, two types of granulocyte were observed (Flerova, 2017;Lapirova et al, 2017). The number of mature granulocytes may be considered a systematic characteristic of a species.…”

Section: Discussionmentioning

confidence: 99%

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Morphological and physiological traits of the mesonephros in a freshwater fish, grayling Thymallus thymallus

Флерова

Morozov

Bogdanova

et al. 2019

Regul. Mech. Biosyst.

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The study presents new data on the structural and functional organization of the mesonephros of the grayling Thymallus thymallus (Linnaeus, 1758). Adult grayling were sampled in the middle course of the Unya River, a tributary of the Pechora River (Komi Republic, Russia). The mesonephros of the grayling, as of other freshwater fishes, is composed by nephrons, blood vessels and hematopoietic tissue forming the renal interstice. In the interstice, сells with a radial vesicle array and chloride cells were discovered; the latter were mostly localized near the renal tubules. The degree of the interstice development in the mesonephros of the grayling was determined. New data on the ultrastructure of leukocytes, cells with a radial vesicle array, chloride cells, and nephron segments were obtained. A lack of mesangial cells, a small number of podocytes, and a thin basement membrane were observed on the sections of a renal corpuscle, being characteristic features of the ultrathin organization of the mesonephros in freshwater members of Salmoniformes and Esociformes. In the grayling’s nephrons, no neck segment was found, which was reported earlier for several species, including mammals. On the sections of proximal tubules, the ciliated cells were rare, and large amounts of the tubular-vesicular network in the zone of endocytosis of the type II epithelial cells were observed. On the sections of distal tubules, short blade-shaped cytoplasmic processes, with large numbers of invaginations of cytoplasmic membrane, were found. On the basis of the distinctive ultrastructure features mentioned above, the inference that grayling show the cytological markers of adaptation to euryhalinity was made. Thus, the results contribute to the knowledge of mesonephros development in fishes during their life history. From the species protection standpoint, our study provides baseline data on a WBC differential in the mesonephros as well as superoxide dismutase, catalase, glutathione S-transferase, and ethoxyresorufin-O-deethylase activities, which can be used in further studies addressing the health status of grayling populations.

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Section: Discussionsupporting

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Morphological and physiological traits of the mesonephros in a freshwater fish, grayling Thymallus thymallus

Флерова

Morozov

Bogdanova

et al. 2019

Regul. Mech. Biosyst.

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“…Relative total amount of mature cells and macrophages of smelt was twice as high as that of Esox lucius. Relative amount of mature granulocytes in the kidney of Osmerus eperlanus was somewhat higher compared with Esox lucius (Lapirova et al, 2017). The great difference in the share of granulocytes between freshwater species in the fattening period and smelt which migrate is most likely related to the peculiarities of functioning of phagocytes and antibody-forming cells in the conditions of spawning migrations.…”

Section: Figmentioning

confidence: 83%

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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Ultrastructure of the mesonephros of whitefishes from the Lake Baikal basin

Flerova,

Sapozhnikova,

Morozov

et al. 2024

The Anatomical Record

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The article presents a study of the mesonephros ultrastructure of Baikal omul Coregonus migratorius, Baikal whitefish Coregonus baicalensis, and a cross between Baikal whitefish and humpback whitefish (C. baicalensis × Coregonus pidschian). The mesonephros ultrastructure was studied using electron microscopy methods. The results of the study show that the number of mature granulocytes is a systematic feature and does not depend on the ecology of fish. The quantitative characteristics of blood cells and the ultrastructural features of leukocytes in the mesonephros are associated with the functioning of the nonspecific defence system in fish. Morphological diversity of epithelial cells in nephron tubules is the ancestral characteristic of the modern omul population, associated with geological and climatic events in the history of Lake Baikal. The development of haematopoietic tissue in the mesonephros, the ultrafine structure of ion‐transporting interstitial cells, as well as some ultrastructural features found in the nephron, reflect the adaptive capabilities of the species to live in the ultra‐deep Lake Baikal.

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Protective systems of immunocompetent organs in fishes from different ecological and systematic groups

Cited by 8 publications

References 11 publications

Morphological and physiological traits of the mesonephros in a freshwater fish, grayling Thymallus thymallus

Morphological and physiological traits of the mesonephros in a freshwater fish, grayling Thymallus thymallus

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

Ultrastructure of the mesonephros of whitefishes from the Lake Baikal basin

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