Results 131 to 140 of about 4,537 (254)

Prospects of multipurpose biomonitoring for fisheries assessment based on environmental nucleic acids

Journal of Fish Biology, EarlyView.
Abstract Methods using environmental nucleic acids have become highly effective for monitoring aquatic biodiversity, with an array of suitable use cases, including metrics for fisheries assessment. Traditional methods for assessing fish populations often rely on invasive techniques with limited spatial and temporal coverage.
Ana Ramón‐Laca, Krista M. Nichols, Kim M. Parsons, Ramón Gallego, David R. Vieites, Ignacio Doadrio, Ana Riesgo   +6 more
wiley   +1 more source

Integrating environmental DNA and trawl surveys to assess seasonal dynamics of fish communities in the Oujiang River Estuary

Frontiers in Marine Science
IntroductionMonitoring of estuarine fish biodiversity is often constrained by the inherent limitations of traditional survey methods and the complex, dynamic environmental conditions of estuarine habitats.
Chen Weifeng, Chen Weifeng, Ruan Huiting, Wang Wei, Wang Wei, Xu Kaiping, Xu Kaiping, Peng Xin, Zhu Rong, Zhu Rong, Lu Yumiao, Lu Yumiao, Ye Shen, Lin Hungdu, Wang Chen, Zhou Xiaofeng, Zhou Xiaofeng   +16 more
doaj   +1 more source

Estimating Patagonian toothfish (Dissostichus eleginoides) length at first maturity from their age, sex and temperature experience around South Georgia

Journal of Fish Biology, EarlyView.
Abstract Patagonian toothfish (Dissostichus eleginoides) are a long‐lived, slow‐growing deep‐sea species endemic to the Southern Hemisphere and the focus of longline fisheries managed to ensure sustainable exploitation. Managing the fisheries relies on accurate stock assessments that include pertinent biological and exploitation processes.
Jessica E. Marsh, Sarah R. Alewijnse, Stephen D. Gregory, Philip R. Hollyman, Marta Söffker   +4 more
wiley   +1 more source

In Situ Determination Of Bottom Trawl Ground Gear Contact

, 2001
No abstracts are to be cited without prior reference to the author.Exact definition of towed distance with proper ground gear contact is an essential parameter in bottom trawl swept area estimates of fish abundance. Errors in this key parameter may lead to a first order bias in abundance estimates of demersal fish.
Engås, Arill, Ona, Egil, Ramberg, Kjell
openaire   +2 more sources

An investigation into the diet of elephant fish (Callorhinchus milii) in the waters of Aotearoa/New Zealand

Journal of Fish Biology, EarlyView.
Abstract Chondrichthyans (sharks, rays and chimaeras) are increasingly understood to be an important part of ocean ecosystems, but their ecological role is unclear. Callorhinchus milii (elephant fish) is a chimaera species endemic to Aotearoa/New Zealand and southern Australian waters.
Kat U. C. Cooper, Ashley A. Rowden, Darren Stevens, Brittany Finucci   +3 more
wiley   +1 more source

Modified fin morphology in mackerel icefish (Champsocephalus gunnari) may indicate nesting behaviour

Journal of Fish Biology, EarlyView.
Abstract Monitoring reproductive traits in Southern Ocean species is challenging. Males in some channichthyids thicken the epithelium along their anal fins to aid nest construction. This study presents initial evidence that the only commercially harvested channichthyid, mackerel icefish (Champsocephalus gunnari), exhibits modifications to their anal ...
Huw W. James, Fabrice Stephenson, Martin A. Collins, Simeon L. Hill, William D. K. Reid   +4 more
wiley   +1 more source

Under pressure: deep-sea elasmobranchs experience high mortality and stress in a crustacean trawling fishery

Frontiers in Fish Science
Crustacean bottom trawling in southern Portugal is an economic and culturally important fishing activity but may result in considerable bycatch of deep-sea elasmobranchs (DSE).
Sofia Graça Aranha, Alexandra Teodósio, Tiago Marsili, Pedro Pires da Rocha, Teresa Modesto, Pedro M. Guerreiro, Aurélien Tambutte, Alexandra Alves, Paulo Relvas, Ester Dias   +9 more
doaj   +1 more source

The extent of sediment resuspension caused by bottom trawling, storms, and dredging in the Baltic Proper [PDF]

This study compares the extent and frequency of seafloor disturbances due to anthropogenic processes (bottom trawling and dredging) with those due to wind-driven waves in the Baltic Proper.
Tjensvoll, Ingrid,, Jönsson, Anette,, Bradshaw, Clare,, Sköld, Mattias,   +3 more
core  

Impact of bottom trawling on the epifauna off Veraval coast, India [PDF]

, 2014
297-312Experimental bottom trawling was conducted from MFV Sagarkripa at five transects of water depths 15-20 m, 21-25 m, 26-30 m, 31-35 m and 36-40 m in commercial trawling grounds to assess the impact of bottom trawling on the epifauna off Veraval ...
Madhu, V. R, Panda, Satyen Kumar, Bhagirathan, Usha, Vaghela, D. T., Meenakumari, B., Jethva, J. K.   +5 more
core  

Ecosystem effects of bottom trawl fishing

cum laude ...
openaire   +1 more source