Migratory fishes are important components of the rich wildlife our waters. Amongst them there certain species which spend vast majority their lives in fresh water (catadromous) and migrate to sea for spawning, instance eel species. Others other way around (anadromous), spending main growth period reaching sexual maturity sea, then spawning freshwaters. Notable representatives this group salmoni...

Abstract Understanding the genetic differentiation among populations of most marine fish requires investigating differences spawning grounds. However, this can be challenging as grounds for some species are not well known, or difficult to collect. An alternative is collect juvenile in nursery habitats closely associated with potential Greenland halibut a deep-dwelling, commercially important at...

While two independent Chinook populations have been identified within WRIA 8 by the PSTRT, Marshall (2000) indicated that there might be enough difference between the North Lake Washington Chinook (Bear/Cottage Lake creeks) and fish returning to Issaquah Creek to consider them separate from one another. WRIA 8 would then contain three distinct Chinook populations (Cedar River, Bear/Cottage Lake...

Salmon farming in marine net pens is a major activity many temperate regions. This industry may affect coastal ecosystems several ways, such as with waste pollution and parasite spillover. Less known about the extent to which salmon disrupts use of inshore spawning grounds by wild fish, Atlantic cod Gadus morhua . Acoustic telemetry was therefore used explore space during season region mid-Norw...

Elevated river water temperature in the Fraser River, British Columbia, Canada, has been associated with enhanced mortality of adult sockeye salmon (Oncorhynchus nerka) during their upriver migration to spawning grounds. We undertook a study to assess the effects of elevated water temperatures on the gill transcriptome and blood plasma variables in wild-caught sockeye salmon. Naturally migratin...

Commercially important hairtails, Trichiurus spp., are widely distributed throughout China’s marine waters. Because eggs of these species difficult to identify and the taxonomy group has recently been resolved, their spawning grounds in northern South China Sea (SCS) not well known. We identified three ( T. japonicus , nanhaiensis brevis ) using DNA barcodes spring late summer–autumn ichthyopla...