Henneguya lesteri n. sp. (Myxosporea) is described from sand whiting, Sillago analis, the southern Queensland coast of Australia. H. displays a preference for pseudobranchs and typically positioned along afferent blood vessels, displacing adjoining lamellae disrupting their normal array. The plasmodia appeared as whitish-hyaline, elliptical cysts (mean dimensions 230 x 410 microm) attached to oral mucosa lining hyoid arch on inner surface operculum. Infections gills were also found, in which...

Since spring 1998, a new disease causing high mortality has afflicted cultured ornamental and common carps (Cyprinus carpio) in Israel. The clinical signs of the are fatigue, gasping movements shallow water, gill necrosis, sunken eyes, pale patches on skin increased mucus secretion. was experimentally transmitted to koi carp various ages by injection with affected tissue filtrates, cohabitation trials exposure isolated viral agent. Immersion healthy fish tanks containing 2.7x104...

DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 49:165-170 (2002) - doi:10.3354/dao049165 Streptococcus iniae infections in Red Sea cage-cultured and wild fishes A. Colorni1,*, Diamant1, Eldar2, H. Kvitt1, Zlotkin3 1Israel Oceanographic Limnological Research, National Center for Mariculture, PO Box 1212, Eilat 88112, Israel 2Department Poultry Fish Diseases, The...

Sphaeromyxa zaharoni n. sp. (Myxosporea) is described from the gallbladder of devil firefish, Pterois miles (Scorpaenidae), coral reefs Gulf Eilat, Israel, northern Red Sea. The parasite was found also in bearded scorpionfish, Scorpaenopsis barbata, same area. This first report on this zoogeographical region. plasmodia are amoeboid when young, becoming disc-shaped and elongated mature. In paraffin sections, plasmodium periphery appears as a finely granulated, strongly eosinophilic layer with...

Effect of 20 days exposure juvenile gilthead seabream ( Sparus aurata ) to elevated levels ammonia on growth and survival was examined in a continuous flow system. Suppressed reduced were observed at concentrations 8.2 13 mg l −1 total ammonia‐N (0.5 0.7 un‐ionized ammonia‐N, respectively) higher. The maximum acceptable toxic concentration (MATC) for between 4.8 (0.3 0.5 respectively). Fish exposed high (13 ammonia‐N) displayed clear signs liver pathology. Existing evidence suggests that S....

Gilt-head sea bream, Sparus aurata L., the Mediterranean's most important mariculture species, has been cultured for last 30 yr in Eilat (Israeli Red Sea). Kudoa sp. was first myxosporean parasite reported from this species. In recent years, an increase prevalence both land-based and sea-cage facilities observed. Infections with same species appeared European bass Dicentrarchus labrax (L.) grey mullet Mugil cephalus farms, as well 10 of wild Sea reef fish, indicating that is not fastidious...

ABSTRACT A molecular characterization of two Mycobacterium marinum genes, 16S rRNA and hsp65 , was carried out with a total 21 isolates from various species fish both marine freshwater environments Israel, Europe, the Far East. The nucleotide sequences genes revealed that all M . in Israel belonged to different strains, one infecting (cultured wild) other (cultured) fish. restriction enzyme map based on confirmed divergence Israeli differentiated foreign isolates, exception three Greek which...

Myxidiurn leei n. sp. is described from cultured sea bream Sparus aurata L. in Cyprus and Israel.It histozoic the intestinal wall forms small plasmodia that give rise to 2 spores each.The average size of fixed 14.7 pm length 6.9 width; their shape arcuate, elongated polar capsules (average 3.2 X 7.4 pm, with 7 turns filament) open at one side spore.The case t h ~s species, which reveals a combination taxonomic characters fitting both Myxidium Zschokkella, stresses once again non-existence...

Infection patterns of Mycobacterium marinum were studied over a period 3 yr in wild rabbitfish Siganus nivulatus populations associated with commercial mariculture cages and inhabiting various sites along the Israeli Red Sea coastline. Mycobacteriosis was first recorded from 1990 farmed sea bass Dicentrarchus labrax is absent records studies on parasites diseases carried out 1970s 1980s. A sharp increase prevalence disease cultured fish region has occurred since. total 1142 examined inside...

Abstract Viral encephalopathy and retinopathy (VER) infections were diagnosed in five fish species: Epinephelus aeneus , Dicentrarchus labrax Sciaenops ocellatus Lates calcarifer Mugil cephalus cultured on both the Red Sea Mediterranean coasts of Israel during 1998–2002. Spongiform vacuolation nervous tissue was observed histological sections all examined species. With transmission electron microscopy, paracrystalline arrays pieces membrane‐associated non‐enveloped virions measuring...

M\"ossbauer studies of the 86-keV transition ${\mathrm{Gd}}^{155}$ in ${\mathrm{Gd}}_{1\ensuremath{-}x}{R}_{x}$ compounds yield hyperfine interaction parameters as a function lattice dimensions and angle $\ensuremath{\theta}$ between magnetization $c$ axis. The magnetic field is anisotropic, $\frac{{H}_{\mathrm{eff}}(\ensuremath{\theta}=28\ifmmode^\circ\else\textdegree\fi{})}{{H}_{\mathrm{eff}}(\ensuremath{\theta}=47\ifmmode^\circ\else\textdegree\fi{})}=1.13$. ratios electric gradients...

DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 91:137-150 (2010) - DOI: https://doi.org/10.3354/dao02256 Dasyatispora levantinae gen. et sp. nov., a new microsporidian parasite from common stingray Dasyatis pastinaca in eastern Mediterranean Ariel Diamant1,*, Menachem Goren2, M. Baki Yokeş3, Bella S. Galil4, Yaelle Klopman2, Dorothée Huchon2, Amir Szitenberg2,...