We identify changes in the pelagic fish community of the tropical Pacific Ocean by comparing recent data collected by observers on longline fishing vessels with data from a 1950s scientific survey when industrial fishing commenced. A major shift in size composition and indices of species abundance and community biomass accompanied the start of fishing. The largest and most abundant predators, s...

Aquaponic fish to plant ratios, or more correctly, aquaponic feeding rate ratios, are an area of aquaponics that have been much debated. There seems to be many approaches to sizing the two main components of aquaponic systems (the fish component and the plant component), whether in a hobby-scale context or a commercial-scale context. I often say that ratios are the “Golden egg” of aquaponics as...

Citation: Boucek RE, Leone E, Bickford J, Walters-Burnsed S and Lowerre-Barbieri S (2017) More Than Just a Spawning Location: Examining Fine Scale Space Use of Two Estuarine Fish Species at a Spawning Aggregation Site. Front. Mar. Sci. 4:355. doi: 10.3389/fmars.2017.00355 More Than Just a Spawning Location: Examining Fine Scale Space Use of Two Estuarine Fish Species at a Spawning Aggregation Site

Two recent works related otter (Lutra lutra, L., 1758) trophic patterns over large areas with the stability of aquatic ecosystems. Higher levels of instability lead to a reduced availability and/or predictability of fish, and consequently to a decrease of fish consumption by otters. The aim of the present study is to test these macrogeographical patterns in otter diet at regional and local-scal...

a. Mathematical upscaling: derivation of coarse-scale equations directly from atomistic equations using Generalized Mathematical Homogenization theory (Fish, Chen, Li, 2007). b. Computational upscaling: reducing the complexity of solving an atomistic problem to a manageable size that can be adapted based on available computational resources. Our model reduction approach is based on the space-ti...

The aim of this study was to investigate the feasibility of two detection methods for use in discrimination and sorting of adult Atlantic cod (about 2 kg) in the small scale capture-based aquaculture (CBA). Presently, there is no established method for discrimination of weaned and unweaned cod in CBA. Generally, 60-70% of the wild-caught cod in the CBA are weaned into commercial dry feed. To in...

OBJECTIVE Epidemiological research links aggression to low serum concentrations of omega-3 fatty acids, such as those found in fish oil. However, no studies have specifically examined whether fish oil supplementation can reduce the frequency and severity of impulsive aggression in children with disruptive behavior disorders. METHODS Children presenting with impulsive aggression and meeting re...

In this paper, we propose a new method of the feature extraction for fish discrimination using mathematical morphology. The conventional research of fish discrimination used parameters which relied upon the physical characteristics of shape, contour and colour. But these methods were insufficient for pract,ical application system. Other physical pararneters include the colouring patterns, speck...

Fish faced with stressful stimuli launch an endocrine stress response through activation of the hypothalamic-pituitary-interrenal (HPI-) axis to release cortisol into the blood. Scientifically validated biomarkers to capture systemic cortisol exposure over longer periods of time are of utmost importance to assess chronic stress in governmental, wildlife, aquaculture and scientific settings. Her...