Skin disease in ornammental fish: identifying common problems

Wildgoose, William H.

doi:10.1136/inpract.20.5.226

Cited by 7 publications

(11 citation statements)

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Section: Discussionmentioning

confidence: 99%

“…Parasitism in fish occurs as a result of interactions among the parasite, the fish and the environment (Wildgoose 1998). Fish in intensive culture are continuously affected by environmental fluctuations and management practices such as handling, crowding, transport, drug treatments, undernourishment, fluctuating temperatures, and poor water quality (Subasinghe 1997, Wildgoose 1998. A slight change in management, which is common under any standard of management, results in considerable stress on the homeostatic mechanisms of fish, rendering them susceptible to infection with a wide variety of parasites (Ling et al 1996, Scholz 1999.…”

Section: Discussionmentioning

confidence: 99%

“…Next, wet mounts of scrapings (of body surface mucus from behind the pectoral fin adjacent to the dorsal fin and operculum, excised gills, lesions, and intestines) of freshly killed fish were examined for parasites using a compound light microscope at ×10 and ×40 magnification. Use of fresh specimens facilitates the visualization of motile parasites (Post 1987, Southgate 1994, Wildgoose 1998. Specimens were then preserved in 10% buffered formalin and 70% ethanol for storage prior to further identification, using keys described by Yamaguti (1963), Kirtisinghe (1964), Fernando & Hanek (1971, 1973, Elliot (1973), Cheng (1986), Liguo et al (1991), Cone (1995), Dickerson & Dawe (1995), Lom (1995) and Hoffman (1999).…”

Section: Methodsmentioning

confidence: 99%

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Parasitic infections in freshwater ornamental fish in Sri Lanka

Thilakaratne¹,

Rajapaksha²,

Hewakopara³

et al. 2003

Dis. Aquat. Org.

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) and 1 nematode (Capillaria spp.) were identified. Parasites were found in fish from 23 of the 26 farms with an overall prevalence of parasitism in 45.3% of fish. The variation in farm prevalence among different parasites was significant (p < 0.01). Fish infection rates with monogenean trematodes, protozoans, copepod crustaceans, digenean trematodes and nematodes were 28.3, 18.4, 4.8, 0.8 and 0.4%, respectively. In all, 50 out of 590 (50/590) guppies were infected with Tetrahymena, compared with 13/930 for all other species, which is a statistically significant result (p < 0.01). Similarly, 13/44 and 18/44 carp were infected with Argulus foliaceus and Lernaea cyprinacea, compared with 7/1476 and 15/1476, respectively, for all other species combined (p < 0.01). Capillaria spp. was found only in guppies (4/590) and angel fish (3/92) while Centrocestus spp. was found in goldfish (12/153) only.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Parasitic infections in freshwater ornamental fish in Sri Lanka

Thilakaratne¹,

Rajapaksha²,

Hewakopara³

et al. 2003

Dis. Aquat. Org.

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“…The skin pigmentation may also change as a result to trauma, parasite attachment and skin infections of fungal, viral and bacterial origin (Fig. 4g; Wildgoose 1998; Roberts 2012).…”

Section: The Anatomy and Functions Of Fish Skinmentioning

confidence: 99%

Mechanical induced wounds in fish – a review on models and healing mechanisms

Sveen

Karlsen

Ytteborg

2020

Reviews in Aquaculture

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Skin wounds and injuries are frequently occurring in farmed fish, particularly in more intensive production systems. Any disruptions of the skin, such as mucus removal, scale loss or deeper incisions, are negatively correlated with barrier functions and disease resistance. In this review, the current knowledge on mechanically induced wounds in fish is dedicated to five areas of focus: (i) The anatomy and functions of fish skin, (ii) Techniques to inflict mechanical skin damage in farmed and laboratory fish for experimental purposes, (iii) Healing mechanisms of deep wounds, (iv) In vitro models for wound healing studies and (v) Wound care, with focus on factors that may enhance or delay skin regenerative processes. The aim of the review was to presents key points for a better understanding of skin resilience and fish robustness, with focus on Atlantic salmon, Salmo salar, in Norwegian coastal production environment.

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“…has been reported from the past studies (Wimalawickrama and Pathiratna 2005;Alcaraz et al 1999;Han et al 2008;Mitchell et al 2002).The present study revealed the prevalence of parasitic infections and their seasonal variations on two economically important ornamental fish species during two seasons at Rambadagalle fish breeding center, and the information derived could be considered important when constructing treatment plans. However, parasitism in fish occurs as a result of interactions among the parasite, the fish and the environment (Wildgoose 1998), therefore interaction of these three factors should be considered when constructing proper health management programs.…”

Section: Nd: Not Detectedmentioning

confidence: 99%

Seasonal variation and site specificity of external parasites in gold fish (Carassius auratus L.) and koi carp (Cyprinus carpio L.) in Rambadagalle Ornamental Fish Breeding Center, Sri Lanka

Sumuduni¹,

Munasinghe²,

Chandrarathna³

et al. 2016

Ruhuna J. Sci.

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Seasonal variation and site specificity of external parasites in gold fish (Carassius auratus) and koi carp (Cyprinus carpio) cultured at Rambadagalle fish breeding and training center were estimated during wet (February-July) and dry (August-November) seasons in 2013. According to the proportion of the total harvest, samples of 30 gold fish and 50 koi carps in the same cohort were collected from two separated harvesting ponds. Their gills, skin scrape and fins were examined in the laboratory for ectoparasites, and the percentage prevalence of parasites at each site of two fish species during two seasons were calculated and compared statistically. Ten external parasite species (Trichodina sp., Apiosoma sp., Tripartiella sp., Chilodonella sp., Ichthyobodo necator, Gyrodactylus sp., Dactylogyrus sp., Centrocestus sp., Posthodiplostomum cuticola, Argulus sp.) were recorded from both fishes during two seasons. Posthodiplostomum cuticola and Chilodonella sp. were not recorded from koi carp while Argulus sp. was not detected from gold fish. Koi carps were highly parasitized during dry season while it was wet season for gold fish. During two seasons, for both fish species, percentage prevalence of Trichodina sp. (skin: ranged from 58%-100%, fins: 12%-97%) and Apiosoma sp. (skin: ranged from koi 28%-100%, fins: 12%-82%) were high in skin and fins. In contrast, during two seasons, for both fish species high percentage prevalence of Dactylogyrus sp. (ranged from 37%-54%) and Centrocestus sp. (ranged from 62%-90%) were recorded from gills. For each fish species, total number of parasites infected in skin, fins and gills were significantly different (< 0.05) between two seasons.

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Skin disease in ornammental fish: identifying common problems

Cited by 7 publications

References 0 publications

Parasitic infections in freshwater ornamental fish in Sri Lanka

Parasitic infections in freshwater ornamental fish in Sri Lanka

Mechanical induced wounds in fish – a review on models and healing mechanisms

Seasonal variation and site specificity of external parasites in gold fish (Carassius auratus L.) and koi carp (Cyprinus carpio L.) in Rambadagalle Ornamental Fish Breeding Center, Sri Lanka

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