Aquaculture and Fisheries Commons^™

Management Strategies To Minimize The Dredging Impacts Of Coastal Development On Fish And Fisheries, Amelia S. Wenger, Christopher A. Rawson, Shaun K. Wilson, Stephen J. Newman, Michael J. Travers, Scott Atkinson, Nicola Browne, Douglas Clarke, Martial Depczynski, Paul L A Erftemeijer, Richard D. Evans, Jean-Paul A. Hobbs, Jennifer L. Mcilwain, Dianne Mclean, Benjamin J. Saunders, Euan S. Harvey

Fisheries Research Articles

Accelerating coastal development and shipping activities dictate that dredging operations will intensify, increasing potential impacts to fishes. Coastal fishes have high economic, ecological, and conservation significance and there is a need for evidence-based, quantitative guidelines on how to mitigate the impacts of dredging activities. We assess the potential risk from dredging to coastal fish and fisheries on a global scale. We then develop quantitative guidelines for two management strategies: threshold reference values and seasonal restrictions. Globally, threatened species and nearshore fisheries occur within close proximity to ports. We find that maintaining suspended sediment concentrations below 44 mg/L (15–121 bootstrapped CI) …

Risk Assessment Of The Potential Impacts Of Seismic Air Gun Surveys On Marine Finfish And Invertebrates In Western Australia, F J. Webster, Brent S. Wise, H Kemps, Warrick Fletcher

Fisheries Research Reports

Seismic surveys have the potential to affect marine life, including commercially and recreationally important finfish and invertebrate species and their prey. There is, however, considerable uncertainty around the degree of impact and relevant pressure-response pathways across the different taxonomic groups.

Pearl Oyster (Pinctada Maxima) Resource Allocation Report / By The Integrated Fisheries Allocation Advisory Committee, Western Australia. Department Of Fisheries, Integrated Fisheries Allocation Advisory Committee

Fisheries Management Papers

This report documents the Allocation Committee’s final position and recommendations on the allocations for the Pinctada maxima resource and has been prepared for consideration by the Minister to determine the allocation of the Pinctada maxima resource.

Pearl Oyster (Pinctada Maxima) Resource Allocation Report : Prepared By The Integrated Fisheries Allocation Advisory Committee, Department Of Fisheries

Fisheries Management Papers

No abstract provided.

Minerals Content Of Extruded Fish Feeds Containing Cricket (Acheta Domesticus) And Black Soldier Fly Larvae (Hermetia Illucens) Fractions, F. G. Irungu, C. M. Mutungi, A. K. Faraj, H. Affognon, C. Tanga, S. Ekesi, D. Nakimbugwe, K. K.M. Fiaboe

All Peer-Reviewed Publications

Animal food sources provide human beings with minerals considerably in adequate quantities. Fish is an indispensable reliable source of nutrients, as aquaculture is a sector that is fast growing and which provides 50% of the world’s fish production. However, fish production is hampered by the increasing costs of feeds due to the ever rising cost of fish meal, an integral component of fish feeds. Substituting fish meal with cheap, yet highly nutritious ingredients in fish feeds is therefore paramount. This study investigated the effects of substituting fish meal with adult cricket meal (ACM) and black soldier fly meal (BSFM) on …

Geography And Island Geomorphology Shape Fish Assemblage Structure On Isolated Coral Reef Systems, Scott Bennett, Andrew R. Halford, Howard Choat, Jean-Paul A. Hobbs, Julia Santana-Garcon, Anthony M. Ayling, Euan S. Harvey, Stephen J. Newman

Fisheries Research Articles

We quantify the relative importance of multi-scale drivers of reef fish assemblage structure on isolated coral reefs at the intersection of the Indian and Indo-Pacific biogeographical provinces. Large (>30 cm), functionally-important and commonly targeted species of fish, were surveyed on the outer reef crest/front at 38 coral reef sites spread across three oceanic coral reef systems (i.e. Christmas Island, Cocos (Keeling) Islands and the Rowley Shoals), in the tropical Indian Ocean (c. 1.126 x 106 km2). The effects of coral cover, exposure, fishing pressure, lagoon size and geographical context, on observed patterns of fish assemblage structure were …

Movements And Capture Efficiency Of The Blue Catfish Ictalurus Furcatus,In Lake Dardanelle, Zachary S. Moran

Theses and Dissertations from 2018

Standardizing low-frequency electrofishing procedures for sampling Blue Catfish Ictalurus furcatus has become a recent focus of fisheries biologists. Information on habitat use, value of chase boats, and duration and timing of samples could increase sampling efficiency. To asses these variables in Lake Dardanelle, Arkansas, I divided this reservoir into lacustrine, transition, and riverine zones. I used a systematic random sample design, and electrofisher, to collect 8,067 Blue Catfish from 458 samples between May and September 2016. I found: (1) The most efficient season to sample was the summer season when water temperatures were >25°C; (2) CPUE was highest on channel …

Ecological Neighborhoods As A Framework For Umbrella Species Selection, Erica F. Stuber, Joseph J. Fontaine

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Umbrella species are typically chosen because they are expected to confer protection for other species assumed to have similar ecological requirements. Despite its popularity and substantial history, the value of the umbrella species concept has come into question because umbrella species chosen using heuristic methods, such as body or home range size, are not acting as adequate proxies for the metrics of interest: species richness or population abundance in a multi-species community for which protection is sought. How species associate with habitat across ecological scales has important implications for understanding population size and species richness, and therefore may be a …

A New Age In Aquamedicine: Unconventional Approach In Studying Aquatic Diseases, Michael Gotesman, Simon Menanteau-Ledouble, Mona Saleh, Sven M. Bergmann, Mansour El-Matbouli

Publications and Research

Background

Marine and aquaculture industries are important sectors of the food production and global trade. Unfortunately, the fish food industry is challenged with a plethora of infectious pathogens. The freshwater and marine fish communities are rapidly incorporating novel and most up to date techniques for detection, characterization and treatment strategies. Rapid detection of infectious diseases is important in preventing large disease outbreaks.

Main text

One hundred forty-six articles including reviews papers were analyzed and their conclusions evaluated in the present paper. This allowed us to describe the most recent development research regarding the control of diseases in the aquatic environment …

Potential Minimum Threshold For Pallid Sturgeon Relative Condition In The Lower Missouri River, Kirk D. Steffensen

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Pallid Sturgeon (Scaphirhynchus albus) condition has declined in the lower Missouri River but the cause and the effects of this decline remain uncertain. Adult Pallid Sturgeon are becoming reproductively ready less frequently and sub-adult Pallid Sturgeon are likely delaying sexual maturation. Even more concerning, Pallid Sturgeon capture rates have declined the past two years (i.e., 2016 and 2017), despite the ongoing Pallid Sturgeon stocking program. Several Pallid Sturgeon that have been captured are visually emaciated but a minimum condition threshold has not been described. Therefore, the aim of this study is to present a potential lethal condition level for …

Western Australian Sea Cucumber Resource - Harvest Strategy 2018-2023, Department Of Primary Industries And Regional Development

Fisheries Management Papers

This publication of harvest strategies is intended to make the decision-making considerations and processes for the management of specified aquatic resources publicly transparent and provide a basis for informed dialogue on management actions with resource users and other stakeholders.

Draft Management Plan For The Pilbara Crab Managed Fishery, Western Australia. Department Of Primary Industries And Regional Development

Fisheries Management Papers

An Instrument of Exemption currently allows for commercial fishing for crabs in the Pilbara. The Pilbara crab resource has been accessed commercially through the Pilbara Developing Crab Fishery (Developing Fishery) since it commenced in 2001, with the majority of effort being undertaken in Nickol Bay, near Dampier. Crab stocks in the Pilbara region are highly variable which can be attributed to environmental fluctuation, however, catches have remained steady over the past five years.

Draft Management Plan For The Pilbara Crab Managed Fishery, Department Of Primary Industries & Regional Development

Fisheries Management Papers

There are currently five Instruments of Exemption which allow for commercial fishing for crab in the Kimberley Developing Crab Fishery (Developing Fishery). Three of the Exemptions are held by non-indigenous commercial operators, and two are held by Aboriginal Body-C orporates who fish in smaller areas with the consent of traditional owners. These Exemption holders have been accessing the Developing Fishery since it first commenced in 2006. The total catch of mud crab for the Developing Fishery peaked in 2015 at 15.3t. This catch represented a 20% increase on the reported catch from 2014 and is 39% higher than catches recorded …

Draft Management Plan For The Kimberley Crab Managed Fishery, Department Of Fisheries

Fisheries Management Papers

No abstract provided.

Draft Management Plan For The Pilbara Crab Managed Fishery, Department Of Fisheries

Fisheries Management Papers

No abstract provided.

Population Characteristics Of A Closed Northern Pike (Esox Lucius) Catch-And-Release Population In Minnesota, John Kempe

Biology Graduate Theses

Literature regarding catch-and-release populations of Northern Pike are rare and provide a unique perspective on their population dynamics. Shingobee Lake is a 64- ha mesotrophic lake with a maximum depth of 12.2 m located in northern Minnesota. Northern Pike fishing has been catch-and-release only since 2005, and there are no public accesses on the lake. Annual ice-out trap-netting occurred from 2009-2017, and a sizable amount of the Northern Pike recaptured via trapnet or angling had been previously tagged (37-59%). The lack of exploitation and high tagging percentage provided a unique opportunity to study the population dynamics of Northern Pike. Shinogbee’s …

Gulls, Martin S. Lowney, Scott F. Beckerman, Scott C. Barras, Thomas W. Seamans

Wildlife Damage Management Technical Series

Abundant gull (Figure 1) populations in North America have led to a variety of conflicts with people. Gulls cause damage at aquaculture facilities and other properties, and often collide with aircraft. Their use of structures on and near water results in excessive amounts of bird droppings on boats and docks. Their presence near outdoor dining establishments, swimming beaches, and recreational sites can lead to negative interactions with people. Large amounts of gull fecal material pollutes water and beaches resulting in drinking water contamination and swim bans. A combination of dispersal techniques, exclusion and limited lethal control may reduce damage to …

The Relationship Between Measures Of Annual Livestock Disturbance In Western Riparian Areas And Stream Conditions Important To Trout, Salmon, And Char, Lindsey M. Goss, Brett B. Roper

Watershed Sciences Faculty Publications

Managing livestock disturbance in riparian zones in a manner that provides economic returns to ranchers while protecting streams is an important aspect of rangeland management on public lands in the western United States. Attempts to balance economic and ecologic outcomes have been made more difficult due to the presence of several salmonid species that are protected under the Endangered Species Act. One approach to proper management of livestock use near streams has been to define the allowable limits of disturbance using 2 metrics, streambank alteration and stubble height. We evaluated 153 stream reaches within the Interior Columbia Basin to determine …

Administration Of Eu (+ Fta) And Other Fleets Involved In Aquaculture Of Salmonids, World Maritime University

Research on the Administration of EU (+ FTA) and other Fleets Involved in Aquaculture of Salmonids

t is widely acknowledged that there exists a dearth of information with regard to fleet involved in aquaculture of salmonids. To address this insufficiency, and to understand the gaps and grey areas, Transport Canada funded a project in 2017 that aimed to gain an in-depth understanding of how the Norwegian, Irish, Chile and Australian fleet involved in aquaculture of salmonids are registered and administered. The World Maritime University undertook the project, and contracted external consultants to develop and deliver reports from a number of the aforementioned jurisdictions.

The project report provides a deep insight into the regulatory framework for the …

Emptying And Refilling Of Slime Glands In Atlantic (Myxine Glutinosa) And Pacific (Eptatretus Stoutii) Hagfishes, Sarah Schorno, Todd E. Gillis, Douglas S. Fudge

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Hagfishes are known for their unique defensive slime, which they use toward off gill-breathing predators. Although much is known about the slime cells (gland thread cells and gland mucous cells), little is known about how long slime gland refilling takes, or how slime composition changes with refilling or repeated stimulation of the same gland. Slime glands can be individually electrostimulated to release slime, and this technique was used to measure slime gland refilling times for Atlantic and Pacific hagfish. The amount of exudate produced, the composition of the exudate and the morphometrics of slime cells were analyzed during refilling, and …