The consequences of reversible gill remodelling on ammonia excretion in goldfish (Carassius auratus)

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The consequences of reversible gill remodelling on ammonia excretion in goldfish (Carassius auratus).

Goldfish acclimated to cold water (e.g. 7°C) experience a marked reduction in functional lamellar surface area owing to the proliferation of an interlamellar cell mass (ILCM), a phenomenon termed gill remodelling. The goal of the present study was to assess the consequences of the reduced functional surface area on the capacity of goldfish to excrete ammonia. Despite the expected impact of ambi...

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Branchial and extra-branchial ammonia excretion in goldfish (Carassius auratus) following thermally induced gill remodeling.

Under cold acclimated conditions, goldfish (Carassius auratus) express an interlamellar cell mass (ILCM) which limits diffusive ion loss but may also impede branchial ammonia excretion (J(amm)). In the present study, goldfish were subjected to a 2-week 5 or 25 °C acclimation in order to modulate the degree of ILCM gill coverage and determine potential effects on J(amm). 25 °C-fish displayed gil...

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Gill metaplasia in a goldfish, Carassius auratus auratus (L.).

1 Environmental Medicine Consortium, North Carolina State University, College of Veterinary Medicine, Raleigh, NC, USA 2 Department of Clinical Sciences, North Carolina State University, College of Veterinary Medicine, Raleigh, NC, USA 3 North Carolina Zoological Park, Asheboro, NC, USA 4 Department of Population Health and Pathobiology, North Carolina State University, College of Veterinary Me...

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Effects of Hypoxia-Induced Gill Remodelling on the Innervation and Distribution of Ionocytes in the Gill of Goldfish, Carassius auratus

The presence of an interlamellar cell mass (ILCM) on the gills of goldfish acclimated to 7°C leads to preferential distribution of branchial ionocytes to the distal edges of the ILCM, where they are likely to remain in contact with the water and hence remain functional. Upon exposure to hypoxia, the ILCM retracts, and the ionocytes become localized to the lamellar surfaces and on the filament e...

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The control of breathing in goldfish (Carassius auratus) experiencing thermally induced gill remodelling.

At temperatures below 15°C the gill lamellae of goldfish (Carassius auratus) are largely covered by an interlamellar cell mass (ILCM) which decreases the functional surface area of the gill. The presence of the ILCM in goldfish acclimated to cold water conceivably could lead to a covering of the neuroepithelial cells (NECs), which are believed to be important for sensing ambient O₂ and CO₂ leve...

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ژورنال

عنوان ژورنال: Journal of Experimental Biology

سال: 2010

ISSN: 1477-9145,0022-0949

DOI: 10.1242/jeb.045955