Aphanomyces as a Fish Parasite

Shanor, Leland; Saslow, Herbert B.

doi:10.2307/3754756

Cited by 16 publications

(3 citation statements)

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“…Aphanomyces as a fish parasite was for the first time reported by Shanor and Saslow (1944) whose observations were confirmed in due course with the investigations of Vishniac and Nigrelli (1957), Scott and O'Bier (1962) and Srivastava (1976). However, in most of the cases Aphanomyces laevis was found to be the main pathogen.…”

Section: Introductionsupporting

confidence: 54%

“…Mycotic infections in fishes caused by the members of saproleniacese were generally termed as "Saprolegniasis" but after the work of investigators viz., Scott (1964), Scott and O'Bier (1962), Shanor and Saslow (1944), Vishniac and Nigrelli (1957), Bhargava et al (1971) and Srivastava (1976) the use of this term has been changed because of the fact that several other members of the familiy saprolegniaceae viz. Achlya, Isoachlya, Dictyuchus, Aphanomyces and Leptolegnia have been found to be equally involved in the fish-fungus complex.…”

Section: Introductionmentioning

confidence: 99%

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Aphanomycosis-A New Threat to Fish Population

Srivastavá¹

2009

Mycoses

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Summary: An interesting case of fish‐mycosis caused by a typical gemmae forming isolate of Aphanomyces (Aphanomyces pisci sp. nov.) is being reported from Indian waters. The present case is quite different from the general term “Saprolegniasis” in the sense that it causes blackening of the scales and subsequent exfoliation exposing the body flesh of the adult individuals of Cirrhinus mrigala (Ham) after which the fishes usually die. Based on these facts the disease has been termed as “Aphanomycosis”. This disease was found to be responsible for the mortality of about 90 % of fishes in the waters of Govt, fish‐ponds, Khukhundu, Deoria (UP) India, during 1974. Zusammenfassung: Ein interessanter Fall einer Fischmykose aus indischen Gewässern, die durch eine neue Art von Aphanomyces mit typischer Gemmenbildung (Aphanomyces pisci sp. nov.) hervorgerufen wird, wird mitgeteilt. Der gegenwärtige Fall unter‐scheidet sich von den unter der allgemeinen Bezeichnung “Saprolegniasis” bezeichneten Erkrankungen insofern, als zunächst an eine Schwarzfärbung der Schuppen auftritt. Anschließend kommt es zur Exfoliation, bei der das Körperfleisch erwachsener Indivi‐duen von Cirrhinus mrigala (Ham) freigelegt wird. Gewöhnlich erfolgt hierauf der Tod des Fisches. Dementsprechend wurde die Erkrankung als Aphanomykosis bezeich‐net. Diese Erkrankung war verantwortlich für den Tod von etwa 90 % der Fische in den Gewässern der Regierungsfischteiche in Khukhundu, Deoria (UP), Indien, im Tahre 1974.

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Section: Introductionsupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Aphanomycosis-A New Threat to Fish Population

Srivastavá¹

2009

Mycoses

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“…Conversely, the invading organisms in these lesions are extremely aggressive, commonly extending to the peritoneal cavity and infecting internal organs, resulting in extensive tissue damage. While internal saprolegniasis has been previously reported it has usually involved infections that originated in the intestinal tract (Agersborg 1933;Shanor & Saslow 1944), or have involved fry where the distance from the skin to internal organs was short (Richards 1978). • Oomycetes are characterized by the production of a 'cotton-ball'-like mycelial mass that is grossly evident on the surface of an affected fish.…”

Section: Discussionmentioning

confidence: 99%

Oomycete fungi associated with ulcerative mycosis in menhaden, Brevoortia tyrannus (Latrobe)

Noga

Dykstra

1986

Journal of Fish Diseases

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Deep necrotic ulcers in Atlantic menhaden, Brevoortia (yrannus (Latrobe), were consistently associated with the presence of oomycete fungi. These organisms were found in over 95% of all lesions both early and late. More than one species of fungus appears to be involved, indicating that these organisms are secondary to some other stressor. However, all characteristically elicit an atypical intense granulomatous inflammatory response and do not behave pathologically as typical oomycetes. Our observation that these fungi appear to be the only organisms consistently present in the earliest stages of the disease indicates that some non-infectious stressor may be responsible for initiating the lesions and subsequently allowing the fungi to induce this atypical response.

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2012

Fish Pathology

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Aphanomyces as a Fish Parasite

Cited by 16 publications

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Aphanomycosis-A New Threat to Fish Population

Aphanomycosis-A New Threat to Fish Population

Oomycete fungi associated with ulcerative mycosis in menhaden, Brevoortia tyrannus (Latrobe)

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