نتایج جستجو برای: catch per unit of effort

تعداد نتایج: 21195074  

2002
A. F. Zuur G. J. Pierce

In this paper, dynamic factor analysis is used to estimate common trends in time series of squid catch per unit effort in Scottish (UK) waters. Results indicated that time series of most months were related to sea surface temperature measured at Millport (UK) and a few series were related to the NAO index. The DFA methodology identified three common trends in the squid time series not revealed ...

Journal: :Journal of economic entomology 2011
Stephen L Lapointe Lukasz L Stelinski Richard D Robinson

The sex pheromone of the leafminer Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae) was deployed in a Florida citrus (Citrus spp.) grove by using a novel deployment device (IFM-413) containing SPLAT, a flowable formulation of an emulsified wax compound designed to provide slow release of semiochemicals. The device consisted of two disks connected by string. Each disk was loaded wit...

Journal: :Revista de biologia tropical 2003
G Ponce-Díaz S Ortega-García S Hernández-Vázquez

The influence of the lunar phases on the catch-per-unit effort (CPUE) of the striped marlin (Tetrapturus audax) captured by the Cabo San Lucas, Baja California Sur, Mexico sport-fishing fleet from October 1987 to June 1989 was analyzed. The information is from 3,377 fishing trips by 13 vessels that represent about 10% of the fleet. The analysis of the CPUE showed a maximum in January 1988 and a...

2017
Kristina Boerder Andrea Bryndum-Buchholz Boris Worm

The largest protected areas of any kind have all recently been established in the ocean. Since 2012, 5 protected areas that exceed 1 million km2 in size have been created, mostly in remote oceanic areas. The potential conservation and fisheries benefits of such reserves have been debated in the public, the media, and the scientific literature. Little is known about their effectiveness for com m...

2013
David G Ainley Nadav Nur Joseph T Eastman Grant Ballard Claire L Parkinson Clive W Evans Arthur L DeVries

We report the analyses of a dataset spanning 39 years of near-annual fishing for Dissostichus mawsoni in McMurdo Sound, Antarctica, 1972–2011. Data on total length, condition and catch per unit effort (CPUE) were derived from the > 5500 fish caught, the large majority of which were measured, tagged and released. Contrary to expectation, the length frequency of the McMurdo Sound catch was domina...

Journal: :Proceedings. Biological sciences 2007
Helen Scales Andrew Balmford Andrea Manica

The live reef fish trade (LRFT) is one of the greatest but least-quantified sources of fishing pressure for several species of large coral reef fish across the Indo-Pacific. For the first time we quantify the localized impact of the LRFT. We collected data from three LRFT traders in northern Borneo, which yielded information on daily fishing effort and the species and mass of all fishes sold ev...

Journal: :Ribarstvo 2023

Abstract The aim of this research is to analyse the trends total artisanal fish catch in Croatian section Sava River. All 17 years study (2004-2020) showed a negative trend that became highly statistically significant ( p <0.01) last eight years. In addition catch, per unit effort (CPUE) also decreased significantly <0.05) throughout study. reasons for these are discussed, including possi...

Journal: :Ecological applications : a publication of the Ecological Society of America 2015
Jeffrey M Dambacher Peter C Rothlisberg Neil R Loneragan

A major decline in the catch of the banana prawn [shrimp], Penaeus (Fenneropenaeus) merguiensis, occurred over a six-year period in the Weipa region of the northeastern Gulf of Carpentaria, Australia. Three main hypotheses have been developed to explain this decline: (1) prawn recruitment collapsed due to overfishing; (2) recruitment collapsed due to a change in the prawn's environment; and (3)...

Reza Abaspour Naderi, Seyed Hesam Kazemi, Seyed Yousef Paighambari,

The present study aims to recognize dhow prawn trawl by-catch from Hormuzgan coastal waters (Northeast Persian Gulf). Sampling was carried out of 36 hauls by using traditionally wooden dhow among prawn fishing season in 2011. The catch composition consisted of 31.66% target species prawns, mainly banana prawn (Penaeus merguiensis) and 68.34% by-catch. The total by-catch was 4,622.67kg com...

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