| evidence for disruption of na(+)-k(+)-atpase and hsp70 during vibriosis of sea bream, sparus (=rhabdosargus) sarba forsskål. | osmoregulation via the sodium pump (na(+)-k(+)-atpase) and cytoprotection via expression of different families of heat shock protein (hsp) were studied at transcriptional/translational levels during progressive vibriosis in silver sea bream, sparus (=rhabdosargus) sarba measurements of na(+)-k(+)-atpase activity showed that an early and drastic decline occurred in the kidney of infected fish. this reduction in na(+)-k(+)-atpase activity was not caused by transcriptional downregulation of genes c ... | 2005 | 15813866 |
| modulation of beta-actin, insulin-like growth factor 1 and glucose-6-phosphate dehydrogenase gene expression during vibriosis of sea bream, sparus (=rhabdosargus) sarba forsskål. | gene expression changes, related to growth regulation, were investigated in silver sea bream, sparus (=rhabdosargus) sarba, subjected to vibriosis. using reverse transcriptase polymerase chain reaction assays, transcript levels of beta-actin, insulin-like growth factor 1 (igf-1) and glucose-6-phosphate dehydrogenase (g6pdh) were analysed. a tissue-specific response for beta-actin was found, as transcript levels in the kidney increased during early- and mid-stage vibriosis, but remained unchanged ... | 2005 | 16302953 |
| pcr amplification and sequence analysis of the major capsid protein gene of megalocytiviruses isolated in taiwan. | viruses belonging to the genus megalocytivirus in the family iridoviridae are one of the major agents causing mass mortalities in marine and freshwater fish in asian countries. outbreaks of iridovirus disease have been reported among various fish species in taiwan. however, the genotypes of these iridoviruses have not yet been determined. in this study, seven megalocytivirus isolates from four fish species: king grouper, epinephelus lanceolatus (bloch), barramundi perch, lates calcarifer (bloch) ... | 2009 | 19460084 |
| a teleostean angiotensinogen from oplegnathus fasciatus responses to immune and injury challenges. | angiotensinogen (agt) is the precursor of the renin-angiotensin system and contributes to osmoregulation, acute-phase and immune responses. a full-length cdna of the agt (2004 bp with a 1389 bp coding region) was isolated from rock bream (rb), oplegnathus fasciatus. the encoded polypeptide of 463 amino acids had a predicted molecular mass of 51.6 kda. rbagt possessed a deduced signal peptide of 22 residues upstream of a putative angiotensin i sequence ((23)nrvyvhpfhl(32)). rbagt possessed a spec ... | 2012 | 22300787 |
| damage and partitioned mortality of teleosts discarded from two australian penaeid fishing gears. | six field experiments were perfromed to (1) quantify the scale loss and partitioned (immediate and short-term) mortality of key teleosts discarded from a penaeid seiner and trawler operating in 2 estuaries in southeastern australia, and (2) assess the utility of modified operational and/or onboard handling procedures for maximising survival. for both gears, several non-target species were caught, handled and discarded according to 2 general categories of treatment ('mild' and 'extreme') represen ... | 2007 | 17803103 |
| biomarker studies on gold-lined sea bream (rhabdosargus sarba) exposed to benzo[a]pyrene. | gold-lined sea bream (rhabdosargus sarba) were intraperitoneally injected with 35 mg/kg benzo[a]pyrene (in dmso), with fish administered dmso as the solvent control. fish were sacrificed 3 days post injection and their livers dissected for the analysis of adenosine triphosphates (atpase), glutathione-s-transferase (gst), dna adducts and ethyoxyresorufin-o-deethylase (erod). exposure to b[a]p resulted in reduced atpase activity, elevated gst activity and dna adduct level, but no apparent change i ... | 2001 | 11380174 |
| histological identification of osteocytes in the allegedly acellular bone of the sea breams acanthopagrus australis, pagrus auratus and rhabdosargus sarba (sparidae, perciformes, teleostei). | the bone of advanced teleost fishes such as those of the family sparidae is said to lack osteocytes or to be acellular. acellularity has been determined by apparent lack of osteocyte lacunae. this study questions the validity of this criterion. scanning electron and light microscopy of paraffin and resin sections were used to show that the sides of sea bream mandibles consist of laminar parallel-fibred bone that we call tubular bone, because it contains tubules, and localised regions of sharpey ... | 1994 | 7818089 |
| structure and origin of the tooth pedicel (the so-called bone of attachment) and dental-ridge bone in the mandibles of the sea breams acanthopagrus australis, pagrus auratus and rhabdosargus sarba (sparidae, perciformes, teleostei). | scanning electron and light microscopy were used to show that the pedicels of fish teeth (the so-called "bones of attachment") consist of three types of dentine that lie concentrically around a pulp cavity lined with typical odontoblasts with cytoplasmic processes in dentinal tubules. circumpulpal canalar dentine forms on a thin layer of orthodentine that is encased in mantle dentine. canalar dentine is a new name given to a dentine that is similar to vasodentine in canal arrangement, but not ap ... | 1994 | 8192237 |
| fish assemblages on estuarine artificial reefs: natural rocky-reef mimics or discrete assemblages? | if the primary goal of artificial reef construction is the creation of additional reef habitat that is comparable to adjacent natural rocky-reef, then performance should be evaluated using simultaneous comparisons with adjacent natural habitats. using baited remote underwater video (bruv) fish assemblages on purpose-built estuarine artificial reefs and adjacent natural rocky-reef and sand-flat were assessed 18 months post-deployment in three south-east australian estuaries. fish abundance, speci ... | 2014 | 23755106 |
| scale characteristics of two fish species, acanthopagrus bifasciatus (forsskål, 1775) and rhabdosargus sarba (forsskål, 1775) from the red sea at jeddah, saudi arabia. | the present work aimed to screening and documenting the diversity of scale characteristics of two species belonging to two different genera of the family sparidae: acanthopagrus bifasciatus and rhabdosargus sarba from the red sea. the valid useful scale characters for systematic purposes were determined in the term of morphometry and scanning electron microscopic techniques. a wide spectrum of size-free intraspecific variations between different body regions was recorded in each species in terms ... | 2013 | 24494517 |
| redescriptions of dichelyne (dichelyne) rasheedae petter, 1974 and spirocamallanus olseni campana-rouget & razarihelissoa, 1965, recorded for the first time from fish in lake st. lucia, south africa. | during a survey of parasites of fish in lake st. lucia, kwazulu-natal, south africa, dichelyne (dichelyne) rasheedae was recovered from the intestines of pomadasys comersonnii and rhabdosargus sarba, and spirocamallanus olseni from rhabdosargus sarba. these are new host and geographical records. both species of nematodes are redescribed and figured by use of light and scanning-electron-microscopical techniques, and additional morphological data are provided. | 1996 | 8848301 |