James Abbott

6 Questions 4 Answers 0 Followers

Questions related from James Abbott

Analyzing catch from gillnets with multiple mesh sizes?

Hello: I'm working on a database that includes catches from fishers who are stringing nets together with different mesh sizes. To reduce inconvenience for the fishers, the fish data were pooled....

23 May 2024 2,999 0 View

Identify another freshwater African fish species?

Also caught in the artisanal fishery of Ogooue River, Gabon. I'm almost positive it is Oreochromis, but doesn't look like either schwebischi or niloticus. Photo courtesy of H. Arrowood, OELO

30 December 2016 6,124 5 View

Identify lesions on fish?

A colleague emailed me that fish (Parachanna obscura) were being caught last year on the Oguemoué R. and this year in Lac Ezanga, Gabon. Any guesses at what it might be? Thank you and follow-up...

11 December 2016 5,016 36 View

Best methods & databases for rapid assessment of a data-poor fishery?

I will be part of group assessing the current state of a fishery in a floodplain system in Central Africa. We have approximately six weeks. One of the objectives is to establish a baseline of fish...

12 November 2016 769 17 View

Can something like a marine protected area be set up in a floodplain river environment?

If so, how can you test the assumptions of such protected areas, i.e.: 1) If there are more fish within the protected area; 2) If the fish are bigger; 3) If there is 'spillover' of fish into...

18 March 2013 1,448 13 View

Is anyone using fish markets, esp. in artisanal fisheries, to measure exploitation rates or biomass in the wild?

I am part of a group that has been measuring parameters at a fish market on the Zambezi River. We measure price, length, weight and species in the inventories of ten randomly chosen (and...

05 March 2013 4,314 34 View