Industrial tuna fisheries operate in the Indian, Atlantic and Pacific Oceans, but concerns over sustainability and environmental impacts of these fisheries have resulted in increased scrutiny of how they are managed. An important but often overlooked factor in the success or failure of tuna fisheries management is the behaviour of fishers and fishing fleets. Uncertainty in how a fishing fleet w...

The purpose of this study was to analyze the catch per fishing effort (CPUE) Red Snapper (Lutjanus sp) resources and comparison catches based on gear used. results showed that in waters Lewalu Village period January – December 2021 fluctuated tended decrease with an average CPUE value 11,499 kg/trip/year. from Fishing Line Rawai Units shows there is a difference catch.

Ponyfish (Leiognathus spp.) is one of the dominant types fish landed at Nusantara Fishing Port (PPN) Karangantu. Its high-intensity fishing activities are feared to cause future problems with sustainability ponyfish resources. This study aims calculate productivity, sustainable optimal effort, maximum catch, and determine pattern season in Banten Bay. The research was conducted from April June ...

The non utilization of fishing management techniques in the Amazônia has many causes such as land tenure instability, inadequate legislation and public policies, the advance of cattle ranching over the floodplains and lack of adequate credit and incentives. Amongst the effects caused by this problem we find the alteration of the ecological process in the floodplains, a decrease in some fish sto...

Marine no-take reserves, where fishing and other extractive activities are prohibited, have well-established conservation benefits [1], yet their impacts on fisheries remains contentious [2-4]. For fishery species, reserves are often implemented alongside more conventional harvest strategies, including catch and size limits [2, 5]. However, catch and fish abundances observed post-intervention a...

The demand for fish for food, recreation, and ornamental aquariums is steadily increasing. Natural fish populations have declined during the last several decades because of environmental degradation and over-fishing. This has resulted in an increased effort in the development of techniques for hatchery production of fish. Traditional aquaculture species such as trout, catfish, common carp, gold...

Simulation and empirical analyses were conducted to evaluate the utility and robustness of average length (Lbar) of animals in the exploited population as an estimator of fishing mortality (F), and therefore as an indicator of exploitation status for Florida coral-reef fish. Simulation results showed that the Lbar estimator of fishing mortality was relatively insensitive to trends in recruitmen...

Taylor's law (TL), which states that variance in population density is related to mean density via a power law, and density-mass allometry, which states that mean density is related to body mass via a power law, are two of the most widely observed patterns in ecology. Combining these two laws predicts that the variance in density is related to body mass via a power law (variance-mass allometry)...

The fundamental aim in fisheries management is to determine an optimal fishing effort for sustainably harvesting from a replenishable resource. The current management objective of Australia’s Northern Prawn Fishery is to maximize the long-term net economic return following Australian government policy, resulting in an average recent catch of tiger prawn species of about 1,250 tons only. However...

China is the world’s largest country in terms of fish production, yet its fisheries management is comparatively unknown outside the country. This article gives an overview of the current management system and highlights some of its challenges. In the past thirty years, the Department of Fishery Administration has formulated and organized a series of conservation and management regimes and measu...