Effects of ammonia on juvenile silver perch (Bidyanus bidyanus)

Frances, Jane; Nowak, Barbara F.; Allan, Geoff L.

doi:10.1016/s0044-8486(99)00286-0

Cited by 60 publications

(35 citation statements)

References 12 publications

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“…Consequently, in pH 9, which is an extreme condition for fish (39), the aneurysm, epithelium lifting, and edema lesions were very mild, but simultaneously generalized severe necrosis was observed due to unsuitable pH levels (25). The results were expected, as all the fish in the treatment were dead, while similar observations in terms of mortality patterns and histologically were also noted (15,40,41). The exposure of Javanese medakas to low (pH 5) or high (pH 9) pH caused epidermal damage, which is described as epithelium necrosis, sloughing, and hyperplasia.…”

Section: Discussionsupporting

confidence: 73%

Water pH effects on survival, reproductive performances, and ultrastructure of gonads, gills, and skins of the Javanese medaka (Oryzias javanicus)

Salleh¹,

Amal²,

Nasruddin³

et al. 2017

Turk J Vet Anim Sci

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The Javanese medaka (Oryzias javanicus) has the potential to be developed as a test organism. It also exhibited many characteristics that are similar to those of well-known laboratory fishes. This study determined the effects of water pH on the survival, reproductive performances, and ultrastructure of the gonads, gills, and skins of the Javanese medaka. This study confirmed that Javanese medakas treated with pH 6-7 displayed the lowest mortality, but increased in egg production and hatchability. This supposition is supported by strong evidence from the oocytes and testes stage analyses, including histological examinations. The ultrastructure of gills and skins of fish treated in that range was also less histologically affected, indicating its suitability range. The sensitivity of the Javanese medaka towards environmental changes, in terms of the selected physiological performances and cellular level, indicate its potential as a test organism in tropical regions.

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Section: Discussionsupporting

confidence: 73%

Water pH effects on survival, reproductive performances, and ultrastructure of gonads, gills, and skins of the Javanese medaka (Oryzias javanicus)

Salleh¹,

Amal²,

Nasruddin³

et al. 2017

Turk J Vet Anim Sci

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“…lamellar fusion, epithelial lifting and hemorrhage) have been well documented (Smart, 1976;Mallatt, 1985;Francis et al, 2000;Spencer et al, 2008), this appears to be the first study examining the effects of chronic sublethal HEA exposure on the branchial…”

Section: Morphological Changes In Necs During Chronic Heamentioning

confidence: 76%

Ammonia sensing by neuroepithelial cells and ventilatory responses to ammonia in rainbow trout

Zhang

Nurse

Jonz

et al. 2011

Journal of Experimental Biology

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SUMMARYAmmonia, the third respiratory gas in teleost fish, acts as an acute stimulant to ventilation in ammoniotelic rainbow trout. We investigated whether this sensitivity is maintained in trout chronically exposed (1+ months) to high environmental ammonia [HEA, 250mmoll -1 (NH 4 ) 2 SO 4 ] in the water, and whether gill neuroepithelial cells (NECs) are involved in ammonia sensing. ] i responses to high ammonia were attenuated in NECs isolated from trout chronically exposed to HEA, especially in ones from gill arch I, but responses to high K + were unchanged. We conclude that the hyperventilatory response to ammonia is lost after chronic waterborne HEA exposure, and that NECs, especially the ones located in gill arches I and II, are probably ammonia chemoreceptors that participate in ventilatory modulation in trout.

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“…Such levels either did not cause histopathological changes in laboratory experiments [39,40], or the changes were only mild [41]. However, the problem is increased ammonia toxicity, when the water pH level is elevated [40].…”

Section: Discussionmentioning

confidence: 99%

Histopathological indicators: a useful fish health monitoring tool in common carp (Cyprinus carpio Linnaeus, 1758) culture

et al. 2013

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In order to evaluate the relationship between water quality in ponds and indices of histopathological changes occurring in the vital organs of the common carp (Cyprinus carpio L., 1758), two six-month field experiments were carried out using two different water supplies: from the nearby stream and a tube well. The fish were fed supplemental feed: raw cereals, pelleted and extruded compound feed. Histopathological analysis, alteration frequencies, and semi-quantitative scoring of the changes were used to assess the health status of the fish. Ponds supplied by stream water were characterized by higher water hardness, dissolved oxygen and pH values, while those supplied by the tube well had higher electroconductivity, total ammonium and orthophosphates content. Fish survival rate and habitat suitability index were lower in ponds supplied by stream water, while the weight gain did not differ between the two water supplies. The use of stream water resulted in a higher level of histopathological changes in gills and liver. Among the water quality parameters, pH level had the strongest influence on fish. Differences in water supply produced greater influence on the level of histopathological changes than the type of feed applied. Gills were the most sensitive organ, while the kidney was the least responsive.

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Effects of ammonia on juvenile silver perch (Bidyanus bidyanus)

Cited by 60 publications

References 12 publications

Water pH effects on survival, reproductive performances, and ultrastructure of gonads, gills, and skins of the Javanese medaka (Oryzias javanicus)

Water pH effects on survival, reproductive performances, and ultrastructure of gonads, gills, and skins of the Javanese medaka (Oryzias javanicus)

Ammonia sensing by neuroepithelial cells and ventilatory responses to ammonia in rainbow trout

Histopathological indicators: a useful fish health monitoring tool in common carp (Cyprinus carpio Linnaeus, 1758) culture

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