Invasion success may be expected to increase with residence time (i.e., time since first introduction) and secondary releases (i.e., those that follow the original introduction), but this has rarely been tested in natural fish populations. We compared genetic and phenotypic divergence in rainbow trout and brown trout in Chile and the Falkland Islands to test the prediction that adaptive diverge...

Phylogeographic, nested clade, and mismatch analyses of mitochondrial DNA (mtDNA) variation were used to infer the temporal dynamics of distributional and demographic history of brown trout (Salmo trutta). Both new and previously published data were analyzed for 1,794 trout from 174 populations. This combined analysis improved our knowledge of the complex evolutionary history of brown trout thr...

In this study, three different age groups of male broodstocks (4, 5 and 6 years respectively) were used to fertilize eggs obtained from nine females. The results showed that 6 year old males had maximum body weight (1766 g), total length (56.3 cm) and sperm volume (31.83 ml). Results did not show significant difference in spermatocrit and spermatozoa concentration among age groups (p>0.05). Our...

Caspian trout is an arctic immigrant, endemic, and a subspecies of bull-trout that lives in the northern waters Russian Federation. There are three fish populations Caspian: Kura, Terek Samur. Kura most numerous population, contrast to [6] separated Samur into separate subspecies, calling it Ciscaucasian (Salmo trutta ciscaucasicus). Consequently, two Salmo currently live basin. The third descr...

—Due to significant threats to native species posed by nonnative fishes, it is important to understand how species life history strategies interact with environmental conditions to explain the outcome of nonnative fish invasions. Brown trout Salmo trutta are prolific invaders but often exhibit upstream distributional limits in streams of the intermountain western United States. We used redd cou...

Movement of live animals is a key contributor to disease spread. Farmed Atlantic salmon Salmo salar, rainbow trout Onchorynchus mykiss and brown/sea trout Salmo trutta are initially raised in freshwater (FW) farms; all the salmon and some of the trout are subsequently moved to seawater (SW) farms. Frequently, fish are moved between farms during their FW stage and sometimes during their SW stage...

The detection of residues of various pharmaceuticals in surface waters during the last two decades has prompted concerns about possible adverse effects of this kind of pollution on aquatic organisms. The objective of the present study was to investigate effects of the non-steroidal anti-inflammatory drug diclofenac, one of the pharmaceuticals most prevalent in surface waters, on brown trout (Sa...

In this study, three different age groups of male broodstocks (4, 5 and 6 years respectively) were used to fertilize eggs obtained from nine females. The results showed that 6 year old males had maximum body weight (1766 g), total length (56.3 cm) and sperm volume (31.83 ml). Results did not show significant difference in spermatocrit and spermatozoa concentration among age groups (p>0.05). Our...

Brown trout growth in Minnesota streams as related to landscape and local factors Andrew K. Carlson, William E. French, Bruce Vondracek, Leonard C. Ferrington Jr, Jane E. Mazack & Jennifer L. Cochran-Biederman To cite this article: Andrew K. Carlson, William E. French, Bruce Vondracek, Leonard C. Ferrington Jr, Jane E. Mazack & Jennifer L. Cochran-Biederman (2016): Brown trout growth in Minneso...