A Severe Outbreak of Ectoparasitism Due to <i>Epistylis</i> sp. in Pond‐Reared Orconectid Crayfish<sup>1</sup>

Brown, Paul B.; White, Marshall; Swann, D. LaDon; Fuller, Melvin S.

doi:10.1111/j.1749-7345.1993.tb00159.x

Cited by 9 publications

(6 citation statements)

References 7 publications

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“…On the surface of B. italica peritricha protozoans of the genus Epistylis (Figures 12-13) were often found. The presence of these ciliates has already been reported on crayfish populations as ectoparasites or ectocommensals (BROWN et al, 1993;SCOTT and THUNE, 1986). …”

Section: Resultsmentioning

confidence: 77%

Species of Branchiobdellidae (Annelida) on Freshwater Crayfish in South Tyrol (Northern Italy)

Oberkofler

Quaglio

Füreder

et al. 2002

Bull. Fr. Pêche Piscic.

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Twenty-eight freshwater crayfish were collected from 8 streams and one small lake in the province of South Tyrol (North Italy) from autumn 1999 to spring 2001, in order to investigate the presence of branchiobdellidans. At 6 of the streams the white clawed crayfish (Austropotamobius pallipes italicus) was collected, while the noble crayfish (Astacus astacus), the exotic species: signal crayfish (Pacifastacus leniusculus) and spiny-cheek crayfish (Orconectes limosus) were respectively caught at the other 2 streams and at the lake. Except for O. limosus, branchiobdellidans were observed on all crayfish examined. On noble crayfish, specimens of Branchiobdella italica and Branchiobdella hexodonta were found on the same host. Branchiobdella italica was largely recovered from all white clawed crayfish. The specimens of signal crayfish were found to carry only Xironogiton victoriensis.Key-words : Branchiobdellidae, freshwater crayfish, annelids, North Italy. Bull. Fr. Pêche Piscic. (2002) LES ESPÈCES DE BRANCHIOBDELLIDAE (ANNELIDA) OBSERVÉES SUR LES ÉCREVISSES DANS LE SUD TYROL (ITALIE DU NORD). RÉSUMÉA partir de l'automne 1999 jusqu'au printemps 2001 en Tyrol du Sud, 28 écrevisses ont été prélevées dans 8 ruisseaux et un petit lac dans le but de vérifier la présence des Branchiobdellidae. L'écrevisse à pieds blancs (Austropotamobius pallipes italicus) a été trouvée dans 6 ruisseaux, l'écrevisse à pieds rouges (Astacus astacus) et l'écrevisse de Californie (Pacifastacus leniusculus) dans deux ruisseaux et l'écrevisse américaine (Orconectes limosus) dans le lac. A l'exclusion de l'écrevisse américaine, on a trouvé chez toutes les autres espèces des Branchiobdellidae. Chez l'écrevisse à pieds rouges, Branchiobdella italica et Branchiobdella hexodonta sont présentes. Chez toutes les écrevisses à pieds blancs, on a relevé une grande quantité de B. italica alors que chez les écrevisses de Californie on a retrouvé seulement le Xironogiton victoriensis. Mots-clés :Branchiobdellidae, écrevisse, Annelida, Italie du Nord.

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Section: Resultsmentioning

confidence: 77%

Species of Branchiobdellidae (Annelida) on Freshwater Crayfish in South Tyrol (Northern Italy)

Oberkofler

Quaglio

Füreder

et al. 2002

Bull. Fr. Pêche Piscic.

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“…Transmission thus occurs through the aquatic environment. Confirmation of this mechanism of transmission is provided by Brown et al (1993) who demonstrated transmission of an Epistylis sp. from Orconetes rusticis to Orconetes virilis during a severe outbreak of Epistylis infestation in a crayfish culture pond.…”

Section: Life Cycle/life Historymentioning

confidence: 84%

“…Some authors have suggested that if the peritrichs are localized in the gill cavity, dense populations may interfere with respiratory processes Villareal and Hutchings, 1986). Crayfish mortalities associated with heavy infestations of sessile peritrichs have been reported (Ninni, 1864;Kent, 1881Kent, -1882Villareal and Hutchings, 1986;Brown et al, 1993) and possible mechanisms of pathogenesis investigated (Vogelbein and Thune, 1988).…”

Section: Pathologymentioning

confidence: 99%

Synopsis of freshwater crayfish diseases and commensal organisms

et al. 2002

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Disease agents and pests associated with freshwater crayfish fall into six main categories-viruses, bacteria, rickettsia-like organisms (RLOs), fungi, protists, and metazoans. Data and information on specific disease agents and pests from each of these categories are presented in this synopsis. Each agent or group of agents is considered under the following headings-condition, causative agent(s), life cycle/life history, epizootiology, pathology, pathogen viability. Information for the synopsis was obtained from the published literature and from personal contact with internationally recognized experts in freshwater crayfish aquaculture, biology, and disease. Data of relevance for import risk analysis are summarized.Import risk analysis is the process by which the risks associated with importation of animals and plants, and products derived from animals and plants, are assessed and managed. Hazard identification is essential and is the first component of an import risk analysis. In 1996, the Australian Quarantine and Inspection Service (AQIS) commenced a review of policy relating to the importation of nonviable freshwater crayfish products, along with a suite of other aquatic animal products. AQIS2 commissioned a synopsis of freshwater crayfish pests and pathogens for use as a resource document for hazard identification in the formal IRA process.

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“…Most reports related to the peritrichous ciliates Episytlis spp. suggest they are innocuous, acting as commensals (Brown et al, 1993;Harlioglu, 1999;Hüseyin and Selcuk, 2005;Quaglio et al, 2006b;Vogelbein and Thune, 1988). However, mortalities have been associated with Epistylis sp., usually under culture conditions (Brown et al, 1993) and mortalities associated with Cothurnia in Italian crayfish was reported by Ninni (1864).…”

Section: Ciliatamentioning

confidence: 99%

Diseases of crayfish: A review

Longshaw

2011

Journal of Invertebrate Pathology

138

112

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A Severe Outbreak of Ectoparasitism Due to Epistylis sp. in Pond‐Reared Orconectid Crayfish¹

Cited by 9 publications

References 7 publications

Species of Branchiobdellidae (Annelida) on Freshwater Crayfish in South Tyrol (Northern Italy)

Species of Branchiobdellidae (Annelida) on Freshwater Crayfish in South Tyrol (Northern Italy)

Synopsis of freshwater crayfish diseases and commensal organisms

Diseases of crayfish: A review

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A Severe Outbreak of Ectoparasitism Due to Epistylis sp. in Pond‐Reared Orconectid Crayfish1

Cited by 9 publications

References 7 publications

Species of Branchiobdellidae (Annelida) on Freshwater Crayfish in South Tyrol (Northern Italy)

Species of Branchiobdellidae (Annelida) on Freshwater Crayfish in South Tyrol (Northern Italy)

Synopsis of freshwater crayfish diseases and commensal organisms

Diseases of crayfish: A review

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A Severe Outbreak of Ectoparasitism Due to Epistylis sp. in Pond‐Reared Orconectid Crayfish¹