1. Sharksuckers use active branchial ventilation when swimming or at rest in stationary water. When attached to a moving object or when placed in a water current, they shift to ram gill ventilation as water velocity exceeds a certain threshold. 2. Water velocities required for the transition from active to ram gill ventilation were from 10-50 cm s-1, depending on the size of the fish. 3. Oxygen...

The gill of fishes is modified for gas exchange, thereby providing a site for net movement of salts and water down their respective gradients. Specialized cells in the gill epithelium are joined by tight junctions of variable depth and express a variety of transporters and channels. These cells mediate NaCl extrusion in marine fishes and NaCl uptake in freshwater fishes. These transport steps a...

Bacterial gill disease (BGD) is a common external infection of hatcheryreared salmonids and occasionally of warm water species reared under intensive conditions. As defined by Wood (1974), the name of the disease describes the clinical signs of bacterial infections on the gills. The etiological agent of the disease is considered to be one or more species of filamentous bacteria including Flavob...

ENWEndNote BIBJabRef, Mendeley RISPapers, Reference Manager, RefWorks, Zotero AMA Gill G. EPIDEMIOLOGICAL TRENDS OF ANTIBIOTIC-RESISTANT NEISSERIA GONORRHEA IN THE EU/EEA/EUROPEAN REGION: A SYSTEMATIC REVIEW. Health Problems of Civilization. 2023. doi:10.5114/hpc.2023.124085. APA Gill, (2023). https://doi.org/10.5114/hpc.2023.124085 Chicago Gurkeerat. "EPIDEMIOLOGICAL REVIEW". Harvard MLA REVIE...

1 From the Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Md (H.K.G.), and Departments of Pathology (O.B.I.) and Radiology (W.A.B.) and Greenebaum Cancer Center (W.A.B.), University of Maryland, 419 W Redwood St, Suite 110, Baltimore, MD 21201. From the 2000 RSNA scientific assembly. Received April 18, 2002; revision requested June 19; final revision received N...

During a survey on Myxobolus infection of pond-cultured common carp in Syria three Myxobolus spp. were found. Myxobolus dispar infected the gill arteries, forming large elongated plasmodia in the gill filaments. The plasmodia of M basilamellaris were located in the gill arches at the base of the filaments. Elongated filiform plasmodia of M. encephalicus were found in the blood vessels of the br...

contamination of aquatic ecosystems with heavy metals has been receiving increased worldwide attention due to their harmful effects on human health and other organisms in the environment. the aim of this study is to elucidate the accumulation and elimination of copper metal on the gill, muscle and skin tissues of black fish, capoeta fusca. sampling was carried out from qantas of birjand area in...

abstract environmental factors including salinity and temperature can affect the physiology and performance of the growth of fish, so many of internal organs such as gill may be showed wide range of morphological and functional changes. fingerling common carp were exposed for 21 days in groups at 20, 25 and 30°c and three salinity levels 0, 5 and 10ppt. histological changes of gills tissue of c...