Investigation of gill mucus cells of Lake Van fish (Alburnus tarichi) during reproductive migration

Alkan, Zehra; Oğuz, Ahmet

doi:10.1007/s10695-020-00921-6

Cited by 7 publications

(5 citation statements)

References 28 publications

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“…Alternatively, the observed VHA localization might correspond to lysosomes and play a role in digesting biological polymers for energy metabolism and cell structural maintenance. In the VHA-rich cells, VHA is localized at the basolateral edges; however, the goblet shape of these cells and their ubiquitous presence throughout the gill epithelium resemble the mucus cells described in fish skin (Ottesen and Olafsen, 1997) and gills (Alkan and Oğuz, 2021; Mir and Channa, 2011) and that may suggest a role in mucus production rather than in ion transport.…”

Section: Discussionmentioning

confidence: 87%

Gill ionocyte remodeling mediates blood pH regulation in rockfish (Sebastes diploproa) exposed to environmentally relevant hypercapnia

Kwan,

Clifford,

Prime

et al. 2024

Preprint

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Marine fishes excrete excess H+ using basolateral Na+/K+-ATPase (NKA) and apical Na+/H+-exchanger 3 (NHE3) in gill ionocytes. However, the mechanisms that regulate H+ excretion during exposure to environmentally relevant hypercapnia (ERH) remain poorly understood. Here, we explored transcriptomic, proteomic, and cellular responses in gills of juvenile splitnose rockfish (Sebastes diploproa) exposed to three days of ERH conditions (pH ~7.5; ~1,600 μatm pCO2). Blood pH was fully regulated at ~7.75 despite a lack of significant changes in gill (1) mRNAs coding for proteins involved in blood acid-base regulation, (2) total NKA and NHE3 protein abundance, and (3) ionocyte density. However, ERH-exposed rockfish demonstrated increased NKA and NHE3 abundance on the ionocyte plasma membrane coupled with wider apical membranes and greater extension of apical microvilli. The observed gill ionocyte remodeling is consistent with enhanced H+ excretion that maintains blood pH homeostasis during exposure to ERH and does not necessitate changes at the expression or translation levels. These mechanisms of phenotypic plasticity may allow fishes to regulate blood pH during environmentally relevant acid-base challenges, and thus have important implications for both understanding how organisms respond to climate change and for selecting appropriate metrics to evaluate its impact on marine ecosystems.

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Section: Discussionmentioning

confidence: 87%

Gill ionocyte remodeling mediates blood pH regulation in rockfish (Sebastes diploproa) exposed to environmentally relevant hypercapnia

Kwan,

Clifford,

Prime

et al. 2024

Preprint

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“…The change in the environment from salty to freshwater during the migration to spawning has an impact on both the histological structure of the fish skin and the physicochemical properties of the mucus. Numerous studies have reported that spawning migration connected with changes in salt content, pH, temperature and ion concentration affects the size and reduces the density of mucus cells in fish [ 17 , 36 , 37 , 38 ]. The skin of anadromous fish shows incredible plasticity in contact with changing environmental conditions.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to the parameters already mentioned, the reproductive migration of fish causes modifications of the chemical composition of mucus. An example is anadromous fish from Lake Van, Turkey [ 38 ], which increases the secretion of neutral glycoconjugates in the mucus when migrating to spawn in freshwater and return to secrete sulfated and acidic glycoconjugates in the waters of Lake Van. The concentration of the basic mineral components of the mucus, such as sodium, potassium chloride, magnesium and chlorine ions, also changes dramatically.…”

Section: Discussionmentioning

confidence: 99%

Etiology of Ulcerative Dermal Necrosis (UDN) in Brown Trout (Salmo trutta Morpha trutta)—Preliminary Results

Matras,

Stachnik,

Kycko

et al. 2024

Pathogens

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Every year, ulcerative dermal necrosis (UDN) affects salmonids that spend most of their lives in the sea during their migration to the rivers of northern Poland to spawn. The clinical form of the disease manifests itself in ulcerative skin lesions, which lead to significant weakening of the fish and, in most cases, result in their death. This study was carried out on samples taken from sea trout in the Słupia River in northern Poland. In order to identify the pathogen, experiments on the transmission of the disease were carried out, and additional histopathological, microbiological and electron microscopic examinations were performed. As a result of these studies, it was possible to experimentally transfer the disease from sick to healthy fish. The results indicate a complex etiology of the disease (lack of a clearly defined pathogen), in which the change in the environment from salty to freshwater triggers the related changes in skin physiology, which are the main causes of increased susceptibility to the development of the disease.

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“…A histochemical analysis of the DOs of African catfish [25] demonstrated mucous cells producing acidic and mixed mucins, similar to the examined C. batrachus and C. angolensis. Meanwhile, neutral mucus has a lower viscosity compared to acidic mucus and provides excellent protection against physical damage [50], but has a lower preventive potential against parasites and microorganisms [51].…”

Section: Discussionmentioning

confidence: 99%

Histological Study of Suprabranchial Chamber Membranes in Anabantoidei and Clariidae Fishes

Adamek‐Urbańska

Błażewicz

Sobień

et al. 2021

Animals

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Accessory respiratory organs (AROs) are a group of anatomical structures found in fish, which support the gills and skin in the process of oxygen uptake. AROs are found in many fish taxa and differ significantly, but in the suborder Anabantoidei, which has a labyrinth organ (LO), and the family Clariidae, which has a dendritic organ (DO), these structures are found in the suprabranchial cavity (SBC). In this study, the SBC walls, AROs, and gills were studied in anabantoid (Betta splendens, Ctenopoma acutirostre, Helostoma temminckii) and clariid (Clarias angolensis, Clarias batrachus) fishes. The histological structure of the investigated organs was partially similar, especially in relation to their connective tissue core; however, there were noticeable differences in the epithelial layer. There were no significant species-specific differences in the structure of the AROs within the two taxa, but the SBC walls had diversified structures, depending on the observed location. The observed differences between species suggest that the remarkable physiological and morphological plasticity of the five investigated species can be associated with structural variety within their AROs. Furthermore, based on the observed histology of the SBC walls, it is reasonable to conclude that this structure participates in the process of gas exchange, not only in clariid fish but also in anabantoids.

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Investigation of gill mucus cells of Lake Van fish (Alburnus tarichi) during reproductive migration

Cited by 7 publications

References 28 publications

Gill ionocyte remodeling mediates blood pH regulation in rockfish (Sebastes diploproa) exposed to environmentally relevant hypercapnia

Gill ionocyte remodeling mediates blood pH regulation in rockfish (Sebastes diploproa) exposed to environmentally relevant hypercapnia

Etiology of Ulcerative Dermal Necrosis (UDN) in Brown Trout (Salmo trutta Morpha trutta)—Preliminary Results

Histological Study of Suprabranchial Chamber Membranes in Anabantoidei and Clariidae Fishes

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