Ionic transport in the fish gill epithelium

Evans, David H.; Piermarini, Peter M.; Potts, W. T. W.

doi:10.1002/(sici)1097-010x(19990601)283:7<641::aid-jez3>3.0.co;2-w

Cited by 223 publications

(116 citation statements)

References 71 publications

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“…This is evident in the near doubling in whole body Na þ content in rainbow trout during the first 14 dph (Brauner & Wood 2002a). Secondly, expansion of respiratory SA exacerbates diffusive ion loss at the lamellae, requiring greater ion uptake rates to balance increased efflux (Evans et al 1999).…”

Section: Resultsmentioning

confidence: 99%

Ions first: Na⁺uptake shifts from the skin to the gills before O₂uptake in developing rainbow trout,Oncorhynchus mykiss

Wilson

Rombough

et al. 2010

Proc. R. Soc. B.

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This is the first direct physiological evidence in support of the ionoregulatory hypothesis, challenging the long-held assumption that teleost gills develop initially for gas exchange. Resting unidirectional sodium (Na þ ) uptake and oxygen (O 2 ) uptake across the skin and gills were measured simultaneously in larval rainbow trout, Oncorhynchus mykiss, during development. In soft and hard water, Na þ uptake shifted to the gills by 15 and 16 days post-hatch (dph) while O 2 uptake took 50 -80% longer and shifted by 23 and 28 dph, respectively. This suggests that gills are required for ionoregulation prior to gas exchange in developing rainbow trout. The age of transition for Na þ uptake, gill Na þ , K þ -ATPase (NKA) a-subunit protein expression and gill NKA enzyme activity were not significantly different between soft and hard water-reared groups, which suggests a lack of plasticity in gill ionoregulatory development.In rainbow trout, the gills assume a dominant role in ionoregulation before gas exchange, suggesting that ionoregulation may be the initial driving force for gill development. Further investigation is required to determine whether this pattern is consistent with other teleosts and more basal fishes during early development to gain insight into the role of ionoregulation in vertebrate gill evolution.

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Section: Resultsmentioning

confidence: 99%

Ions first: Na⁺uptake shifts from the skin to the gills before O₂uptake in developing rainbow trout,Oncorhynchus mykiss

Wilson

Rombough

et al. 2010

Proc. R. Soc. B.

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“…As células de cloro desempenham papel crucial na regulação do equilíbrio ácido-base e na osmorregulação dos peixes teleósteos (Evans et al, 1999); provavelmente essa lesão é uma resposta adaptativa dos indivíduos para aprimorar essas funções branquiais. Sanit.…”

Section: Resultsunclassified

Uso de biomarcador histopatológico em brânquias de Centropomus undecimalis (Bloch, 1972) na avaliação da qualidade da água do Parque Ecológico Laguna da Jansen, São Luís - MA

Cantanhêde

Medeiros

Ferreira

et al. 2014

Arq. Bras. Med. Vet. Zootec.

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“…In the branchial epithelium, mitochondria-rich cells (MR cells, i.e. chloride cells) are the main sites for exchange of ions (reviewed in Evans et al 1999). Variation in the surface area of exposed chloride cells occurs in response to changes in a wide variety of environmental conditions, including SW or ion-poor water conditions .…”

Section: Introductionmentioning

confidence: 99%

Salinity tolerance and gill histopathological alterations inLiza aurataRisso, 1810 (Actinopterygii: Mugilidae) fry

Moghadam

Behrouz

Khorjestan

et al. 2013

Italian Journal of Zoology

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Gill histopathological alterations in Golden Grey Mullet, Liza aurata, fry in acute salinity exposure were studied by light and scanning electron microscopy (SEM). The Golden Grey Mullet fry was obtained from the south of the Caspian Sea and acclimated to brackish water (12 ppt). Fry (adapted in 12 ppt salinity) were transferred directly to salinities of 40, 45, 50, 55, 60, 65 and 70 ppt. Mortality occurs more rapidly over a narrow range of salinity from 45 to 60 ppt. Mortality was 100% in salinity higher than 60 ppt. Histopathological gill alterations included edema of the epithelial cells with the breakdown of pillar cells, hypertrophy and hyperplasia of epithelial and chloride cells. According to SEM observation, two types of chloride cells were identified in gill of L. aurata fry. In Type I, crypts usually had large openings and were occasionally ornamented with short microvilli, and, in Type II, crypts resembled a narrow and deep hole. The number of Type II increased following elevated salinity. lethal concentration 50 (LC 50 ) 24-, 48-, 72-and 96-h values calculated with the probit method were 50.11, 49.91, 49.91 and 49.91 ppt, respectively. This study showed that the gill was the primary target organ for the acute effects of salinity. Moreover, the type of chloride cells and gill structure is affected by acute salinity such that these alterations must be one of the reasons for death in some treatments.

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Ionic transport in the fish gill epithelium

Cited by 223 publications

References 71 publications

Ions first: Na⁺uptake shifts from the skin to the gills before O₂uptake in developing rainbow trout,Oncorhynchus mykiss

Ions first: Na⁺uptake shifts from the skin to the gills before O₂uptake in developing rainbow trout,Oncorhynchus mykiss

Uso de biomarcador histopatológico em brânquias de Centropomus undecimalis (Bloch, 1972) na avaliação da qualidade da água do Parque Ecológico Laguna da Jansen, São Luís - MA

Salinity tolerance and gill histopathological alterations inLiza aurataRisso, 1810 (Actinopterygii: Mugilidae) fry

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Ionic transport in the fish gill epithelium

Cited by 223 publications

References 71 publications

Ions first: Na+uptake shifts from the skin to the gills before O2uptake in developing rainbow trout,Oncorhynchus mykiss

Ions first: Na+uptake shifts from the skin to the gills before O2uptake in developing rainbow trout,Oncorhynchus mykiss

Uso de biomarcador histopatológico em brânquias de Centropomus undecimalis (Bloch, 1972) na avaliação da qualidade da água do Parque Ecológico Laguna da Jansen, São Luís - MA

Salinity tolerance and gill histopathological alterations inLiza aurataRisso, 1810 (Actinopterygii: Mugilidae) fry

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Ions first: Na⁺uptake shifts from the skin to the gills before O₂uptake in developing rainbow trout,Oncorhynchus mykiss

Ions first: Na⁺uptake shifts from the skin to the gills before O₂uptake in developing rainbow trout,Oncorhynchus mykiss