Catch Per Unit Area (CPUA) estimation and distribution pattern of pharaoh cuttlefish from North Coast Gulf Oman

Context Aerial shooting from a helicopter targeting introduced sambar deer (Cervus unicolor) is key activity being undertaken on public land in the North East and Gippsland regions of Victoria. However, there currently little published information efficacy aerial for reducing populations Australia. Aims The aims this study were to analyse operational data collected during an program eastern Vic...

This study aims to reveal the by-catch rates for gillnet fishery, targeted Boops boops by small-scale fisheries around fish farms in Güllük Bay (Aegean Sea), and determine per unit effort (BPUE) rates. The was carried out through deck sampling at Göltürkbükü, Gündoğan, Yalıkavak, Torba fishing ports during two seasons between November April (2017-2018 / 2018-2019). A total of 147 operations fro...

Context The growing demand for global food security has resulted in rising fishing intensity, sometimes leading to overexploitation of fish resources, including tuna. Increasingly, fishers are using anchored aggregating devices (aFADs) improve efficiencies and reduce costs.Aims To identify locations use patterns FADs characterise aFAD usage Indonesia beyond.Methods We identified general by tuna...

A new habitat-based model is developed to improve estimates of relative abundance of Pacific bigeye tuna (Thunnus obesus). The model provides estimates of ‘effective’ longline effort and therefore better estimates of catch-per-unit-of-effort (CPUE) by incorporating information on the variation in longline fishing depth and depth of bigeye tuna preferred habitat. The essential elements in the mo...

Directed fishing effort for Atlantic bluefin tuna in the Gulf of Mexico (GOM), their primary spawning grounds in the western Atlantic, has been prohibited since the 1980s due to a precipitous decline of the spawning stock biomass. However, pelagic longlines targeted at other species, primarily yellowfin tuna and swordfish, continue to catch Atlantic bluefin tuna in the GOM as bycatch. Spatial a...

Frigate tuna Auxis thazard (Lacepède, 1800) is the most dominant species caught by multiple handline in coastal and offshore fishing grounds of Tawi-Tawi, southern Philippines. In this study, we investigated size distribution, length-weight relationship, catch per unit effort frigate (A. thazard) Tawi-Tawi waters, Philippines, using handline. A total 383 fish were sampled with a distribution (t...

Executive summary Indices of catch per unit effort are presented for bigeye and yellowfin tuna in the WCPO from 1952 to 2009, based on analyses of aggregated Japanese distant water longline data. One change was made to the methods for estimating indices of abundance for the bigeye and yellowfin stock assessments, with removal of the targeting indicator based on CPUE of other species. This chang...

Before implementing resource management measures, it is essential to establish the goals of fisheries by assessing current biomass status and level fishing effort. This study aims compare surplus production models, i.e., process-error state-space based on how they fit observed data. The effects Sandfish Stock Rebuilding Plan are analyzed using a bioeconomic model. analytical results show that l...