Although Antarctic krill live in a relatively harsh and variable environment, they are extremely abundant and occur across a wide geographic range. Krill are also the dominant prey item for a variety of predators ranging from fish to whales. Thus, krill life histories and survival strategies represent an interesting and biologically relevant theoretical question: How do krill survive and what m...

The Internet of Things (IoT) is an innovative technology that connects the digital and physical worlds as well allows devices capable different capacities to share resources accomplish tasks. Most IoT objects have limited battery life are heterogeneous. Assignment these is, therefore, extremely challenging. Energy consumption reliability primary objectives task allocation algorithms. We present...

Krill oil is a new available health product which is produced from deep marine species, namely, krill. Krill lives in deep sea in the area of new global polar. It is a marine crustacean species enriching in both eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Due to the good environment, krill exposes to very few pollutants. As a deep sea animal, krill contains good omega-3 lipid, s...

John Wiedenmann Implications of Climate Change for Antarctic Krill and Their Cetacean Predators Antarctic krill are the dominant prey for many predators in the Southern Ocean. A changing climate may affect the biomass of krill available to both predators and the fishery, and being able to predict such changes, and subsequent impacts on krill predators is essential for the effective management o...

Antarctic krill (Euphausia superba) is a key component of the Southern Ocean food web. It supports a large number of upper trophic-level predators, and is also a major fishery resource. Understanding changes in krill abundance has long been a priority for research and conservation in the Southern Ocean. In this study, we performed stable isotope analyses on ancient Adélie penguin tissues and in...

We surveyed Antarctic krill (Euphausia superba) under sea ice using the autonomous underwater vehicle Autosub-2. Krill were concentrated within a band under ice between 1 and 13 kilometers south of the ice edge. Within this band, krill densities were fivefold greater than that of open water. The under-ice environment has long been considered an important habitat for krill, but sampling difficul...

The compound effects of changing habitats, ecosystem interactions, and fishing practices have implications for the management of Antarctic krill and conservation of its predators. For Antarctic pack-ice seals, an important group of krill predators, we estimate the density and krill consumption in theWest Antarctic Peninsula (WAP)–WesternWeddell Sea area, the main fishery region; and we consider...

Antarctic krill Euphausia superba is a predominant species in the Southern Ocean, it is very sensitive to climate change, and it supports large stocks of fishes, seabirds, seals and whales in Antarctic marine ecosystems. Modern krill stocks have been estimated directly by net hauls and acoustic surveys; the historical krill density especially the long-term one in the Southern Ocean, however, is...

Commercial fisheries may impact marine ecosystems and affect populations of predators like seabirds. In the Southern Ocean, there is an extensive fishery for Antarctic krill Euphausia superba that is projected to increase further. Comparing distribution and prey selection of fishing operations versus predators is needed to predict fishery-related impacts on krill-dependent predators. In this co...

The search for efficient and reliable bio-inspired optimization methods continues to be an active topic of research due to the wide application of the developed methods. In this study, we developed a reliable and efficient optimization method via the hybridization of two bio-inspired swarm intelligence optimization algorithms, namely, the Monkey Algorithm (MA) and the Krill Herd Algorithm (KHA)...