Sex-specific Differences in Cardiac Control and Haematology of Sockeye Salmon 1 (Oncorhynchus nerka) Approaching Their Spawning Grounds. 2 3 Erik Sandblom *, Timothy D. Clark, Scott G. Hinch and Anthony P. Farrell 4 4 5 6 1 Faculty of Land and Food Systems, University of British Columbia, Vancouver, 7 Canada, V6T 1Z4 8 2 Department of Zoology, University of Gothenburg, Box 463, S-405 30, 9 Goth...

Resource managers are increasingly being challenged by stakeholder groups to consider dam removal as a policy option and as a tool for watershed management. As more dam owners face high maintenance costs, and rivers as spawning grounds for anadromous fish become increasingly valuable, dam removal may provide the greatest net benefit to society. This article reviews the impact of Endangered Spec...

The deployment of electronic data storage tags that are surgically implanted or satellite-linked provides marine researchers with new ways to examine the movements, environmental preferences, and physiology of pelagic vertebrates. We report the results obtained from tagging of Atlantic bluefin tuna with implantable archival and pop-up satellite archival tags. The electronic tagging data provide...

[1] Recent data from an autonomous ocean glider in the Ibiza Channel (Western Mediterranean Sea) show variations in the transport volumes of water over timescales of daysweeks, as large as those previously only identifiable as seasonal or eddy driven. High frequency variation in transports of water masses has critical implications for ocean forecasting. Three potential modes of transport are pr...

The discovery of two new components of the migratory pheromone used by sea lamprey to guide adults to spawning grounds was recently reported. These hold promise for use in a pheromone-based control program for this species, an invasive pest in the Great Lakes. Details of the structure determination of these steroidal bis-sulfates [petromyzosterol disulfate (PSDS, 2) and petromyzonamine disulfat...

Mahseers, at one time considered to be of single species, are now represented by six valid species distributed all over India. Unfortunately, their catches have considerably dwindled due to illegal methods of fishing and habitat deterioration. Studies on their fciod habits, ecology of spawning grounds, eggs, larval development and especially methods of artificial propagation have fairly advance...

Predation can be a significant source of natural mortality for small pelagic fish species, rivaling or exceeding fishery removals. Failure to account changes in introduce uncertainty the assessment and management these stocks. In this study, 10-year span hydroacoustic data was used detect Bluefin Tuna Thunnus thynnus on two major fall spawning grounds Atlantic Herring Clupea harengus, an econom...

To study the intraspecific diversity of Caspian Asp, Leuciscus aspius in South Sea region, Iran, we collected 2016–2017 a total 101 specimens from Aras River and Astara, Anzali, Kiashahr Langeroud shores, analysed 41 morphometric nine meristic characteristics with multivariate statistical methods. Significant differences were found between these populations 27 traits. A Principal Component Anal...

The aim of the work is to summarize information about reproduction, stock dynamics and walleye pollock fishery in Navarin region Bering Sea. Methods used: methods models science, allowing assess state conditions increased data noise specific features entry generations into fishing stage. Result: updated estimates status Sea are given. available allow us that this area there reproductively isola...