Trends in an emerging artisanal fishery of the African cyprinid Rastrineobola argentea in Lake Nabugabo, Uganda

2021 ◽  
Author(s):  
Veronica Groves ◽  
Diana M. T. Sharpe ◽  
Winnie Nkalubo ◽  
Lauren J. Chapman
Keyword(s):  
Artisanal Fishery

Predation by southern sea lions (Otaria flavescens) on artisanal fishing catches in Uruguay

2002 ◽  
Vol 53 (8) ◽  
pp. 1161 ◽  
Author(s):  
Diana Szteren ◽  
Enrique Páez
Keyword(s):  
Significant Relationship ◽  
Shallow Waters ◽  
Fishing Gear ◽  
Artisanal Fishery ◽  
Artisanal Fishing ◽  
Catch Per Unit Effort ◽  
Sea Lion ◽  
Otaria Flavescens ◽  
Sea Lions ◽  
Unit Effort

Southern sea lions (Otaria flavescens) forage in coastal fishery grounds in shallow waters, where they interact with coastal fishing activities. The main objective of this research was to evaluate the predation of southern sea lions on artisanal fishery catches and thus determine whether interactions with sea lions affected catches. Between July 1997 and March 1998, we observed 53 fishing events onboard artisanal fishing boats in four localities. The presence and number of sea lions around the boat and the numbers of each fish species consumed by sea lions were recorded by an onboard observer. To estimate the damage caused by sea lions to fishery catches, we considered two scenarios, a conservative scenario and a maximized scenario. Predation on catches was observed in 50.9% of all the fishing events and up to four sea lions were sighted in 67.9% of fishing events. Considering a conservative scenario, predation varied from 0.8 to 9.1% of the catch per unit effort (CPUE) depending on the location. Considering the maximized scenario, predation varied from 3.4 to 46.2%. However, no significant relationship was found between CPUE and the number of sea lions in any locality or with either type of fishing gear. Furthermore, CPUE did not differ in the presence or absence of sea lion interactions and predation per unit effort did not vary between localities or seasons. It was concluded that neither the presence of sea lions nor the damage they cause were responsible for variations in CPUE.

scholarly journals The paraty artisanal fishery (southeastern Brazilian coast): ethnoecology and management of a social-ecological system (SES)

2012 ◽  
Vol 8 (1) ◽  
pp. 22 ◽  
Author(s):  
Alpina Begossi ◽  
Svetlana Salyvonchyk ◽  
Vinicius Nora ◽  
Priscila F Lopes ◽  
Renato AM Silvano
Keyword(s):  
Ecological System ◽  
Brazilian Coast ◽  
Artisanal Fishery ◽  
Social Ecological

scholarly journals Exploitation and reproduction of the bullnose ray (Myliobatis freminvillei) caught in an artisanal fishery in La Pared, Margarita Island, Venezuela

2016 ◽  
Vol 114 (2) ◽  
pp. 144-152
Author(s):  
Alejandro Tagliafico ◽  
Nicolás Ehemann ◽  
María Salomé Rangel ◽  
Néstor Rago
Keyword(s):  
Artisanal Fishery

scholarly journals PRODUCTION FACTORS OF AN ARTISANAL FISHERY ON A MANMADE LAKE IN COTE D’IVOIRE

2020 ◽  
Vol 4 (12) ◽  
pp. 93-102
Author(s):  
Aboua Benié Rose Danielle ◽  
Kien Kouassi Brahiman ◽  
Agbassi Armand ◽  
Kouamélan Essetchi Paul
Keyword(s):  
Ethnic Group ◽  
Cote D'ivoire ◽  
Sustainable Management ◽  
Côte D’Ivoire ◽  
Artisanal Fishery ◽  
Fishing Activity ◽  
Cote D’Ivoire ◽  
Production Factors ◽  
Côte D'ivoire ◽  
Bamboo Traps

Fisheries management involves, among other things, knowledge of the actors and the catching gear used. These data are generally absent in the fisheries of Côte d'Ivoire. However, there is a strong fishing activity. To lead this study, surveys were conducted among fishermen and fishery administrators. The study of fishing activity in the area of Dioulabougou (Côte d’Ivoire, West Africa) in the district of Bouaflé done from November 2013 to February 2014 identified 88 fishermen. This population is composed of ivorians (39.77%) and foreigners (60.23%). The fishing activity is led by malians (Bambara ethnic group): 34.1%. Baoulé ethnic group (29.54% of ivorian fishermen) is the greatest ethnic group of ivorians. Two categories of fishermen stand in the fishing activity. We registered professional fishermen whose job is only fishing (84.1%) and professionals with another activity (4.5%). The fishing activity in Dioulabougou is dominated by adult aged more than 45 years (48%). Fishermen are predominantly illiterate at 42.04%. The fishing techniques used at Dioulabougou are conical fishing baskets (mesh and trunk of ronier), bamboo-traps, gillnets, bottom lines and shore seines. The illiterate situation of fishermen isa serious matter for sustainable management on fish’s resources.

scholarly journals Suitability of artisanal fishery discards as feed for juvenile tub gurnard (Chelidonichthys lucerna L.) reared in sea bottom cages in the mid Adriatic Sea

2016 ◽  
Vol 17 (3) ◽  
pp. 644
Author(s):  
A. RONCARATI ◽  
F. MARIOTTI ◽  
A. FELICI ◽  
M. MELIGRANA ◽  
P. MELOTTI
Keyword(s):  
Adriatic Sea ◽  
Survival Rates ◽  
Condition Index ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Artisanal Fisheries ◽  
Artisanal Fishery ◽  
Feed Conversion ◽  
Sea Bottom ◽  
Fishery Discards

The suitability of using discards from artisanal fisheries as feed for wild-caught Chelidonichthys lucerna (L.) reared in submerged cages in the Adriatic Sea was investigated. Three-hundred juvenile tub gurnard (72.9 ± 11 g, 18 ± 1 cm) were captured and separated into four circular 35.3 m3 submerged cages. Two stocking densities were used: two cages contained 60 fish each (1.7 fish m-3; CG-L) and two cages contained 90 fish each (2.55 fish m-3; CG-H). Growth performance and survival rates were recorded over a 240 day period during which tub gurnard were fed with a variety non-target fishery discards, including common crab, sardine, Atlantic chub mackerel, anchovy, and salema. The survival rate was approximately 90% in both groups (CG-L = 91% and CG-H = 90%), with final stocking densities of 0.32 kg m-3 and 0.49 kg m-3 for the CG-L and CG-H groups, respectively. There were no significant differences in final mean body weight or length between the CG-L group (206 ± 23 g, 24.6 ± 2 cm) and the CG-H group (215.5 ± 32 g, 24.8 ± 2 cm). The condition index was similar between the two groups (1.38 and 1.42 for CG-L and CG-H, respectively). The feed conversion ratio was high in both the CG-H (2.39) and CG-L (2.32) cages. These results demonstrate that viable growth rates of tub gurnard may be obtained by feeding recycled fishery discards and rearing in cages placed on the seabed, which allows for the natural benthic behavior of this species.

Individual Transferable Grounds in a Community Managed Artisanal Fishery

1993 ◽  
Vol 8 (1) ◽  
pp. 78-81 ◽  
Author(s):  
Juan Carlos Seijo
Keyword(s):  
Artisanal Fishery
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