scholarly journals Bio-economic analysis of ESBN fishery of Kumira, the coastal area of Chittagong, Bangladesh

2018 ◽  
Vol 4 (3) ◽  
pp. 315-322
Author(s):  
Md Atiqul Islam Mondal ◽  
MA Kader ◽  
Md Rashed Un Nabi ◽  
Abdullah Al Mamun Siddiqui ◽  
Md Masum Billah ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Coastal Area ◽  
Average Cost ◽  
Total Catch ◽  
Socioeconomic Analysis ◽  
Gill Net ◽  
Catch Composition ◽  
Representative Area ◽  
Average Catch

The present investigation was conducted from May to December 2005 at Kumira, the representative area of Chittagong coast for bio-socioeconomic analysis of ESBN fishery. In catch composition of Kumira, it was observed that finfish occupied 77.03 %, shrimp 19.82 % and crab 3.15 % and the average catch per boat per day were found 16.6 kg in Kumira. The highest total catch per boat per day (50 kg) was found in October at Kumira. The lowest catch was found (2 kg) in August at Kumira. The average total catch per landing center per month was found 14805 kg at Kumira. The average catch per fishermen per day was found 3.39 kg at Kumira and the average cost per boat per month was about 7,813 Tk in the study area. Average sale per month was found over 18,713 Tk in Kumira. During the month July and August most of the fishermen were engaged in Hilsa fishing with the Hilsa gill net resulting the total catch was with ESBN lowest in those months.Asian J. Med. Biol. Res. September 2018, 4(3): 315-322

Antebellum Southern White Fertility: A Demographic and Economic Analysis

1980 ◽  
Vol 40 (2) ◽  
pp. 331-350 ◽  
Author(s):  
Richard H. Steckel
Keyword(s):  
Economic Analysis ◽  
Total Fertility Rate ◽  
Time Trend ◽  
Age At First Birth ◽  
Demographic Analysis ◽  
First Birth ◽  
Distribution Of Wealth ◽  
Socioeconomic Analysis ◽  
Family Limitation ◽  
Child Spacing

This paper investigates the decline and regional differential in antebellum southern white fertility using published census materials and the 1860 population schedules. Demographic analysis is conducted with a synthetic total fertility rate that has four components: age at first birth, age at last surviving birth, surviving-child spacing, and the proportion of women who eventually have surviving children. The socioeconomic analysis employs regressions and focuses on causes of the underlying changes in the components. Family limitation appears to have been unimportant in this population. The distribution of wealth was.probably an important factor shaping the time trend and regional differential in fertility.

scholarly journals Shore-based competitive recreational fisheries in southern Bahia, Brazil: A baseline study

2020 ◽  
Vol 33 (2) ◽  
pp. 183-203
Author(s):  
Katia Meirelles Felizola Freire ◽  
Felipe Pinto Nascimento ◽  
Gecely Rodrigues Alves Rocha
Keyword(s):  
Minimum Size ◽  
Current Status ◽  
Total Catch ◽  
Recreational Fisheries ◽  
Middle Aged ◽  
Baseline Study ◽  
Commercial Importance ◽  
Southern Bahia ◽  
Catch Composition ◽  
Main Factor

This study describes shore-based competitive fishing events in Ilhéus, southern Bahia (Brazil), including catch composition, and provides information on the profile of recreational fishers participating in these events. Information was collected in all events promoted by the Clube de Pesca de Ilhéus (CLUPESIL) in 2007-2008. A total of 26 competitive fishing events were organized during this period, with 47 species caught. The top species were: Cathorops spixii, Menticirrhus littoralis, Trachinotus goodei, Eucinostomus melanopterus, Polydactylus virginicus, Atherinella brasiliensis, and Eucinostomus argenteus. These seven species represented 87% of the total catch in number and 78% in weight. Menticirrhus littoralis and Polydactylus virginicus are species of commercial interest and their catch was dominated by juveniles. Local recreational fishers were predominately middle-aged men, who tended to use small hooks and mainly shrimp as bait. They were consumption-oriented, but also released small fishes. During competitions, fishers used even smaller hooks. Most of them perceived shrimp trawling as the main factor affecting recreational fisheries. The use of larger hooks and a minimum size of 20 cm are suggested to decrease the capture of juveniles, mainly those of commercial importance. This study sets a baseline from which new studies can be proposed to access the current status of local recreational fisheries.

PEMANFAATAN ALAT BANTU RUMPON ELEKTRONIK TERHADAP PENINGKATAN HASIL TANGKAPAN PADA ALAT TANGKAP GILL NET DI WILAYAH PESISIR KAB. BULUKUMBA

2021 ◽  
Vol 4 (1) ◽  
pp. 91-104
Author(s):  
Rahmat Bin Aburaera Sileh ◽  
Danial Sultan ◽  
Ihsan Ihsan
Keyword(s):  
Data Collection ◽  
Deep Sea ◽  
Sustainable Management ◽  
Management Strategy ◽  
Fishing Gear ◽  
Total Catch ◽  
Community Based ◽  
Shallow Marine ◽  
Fishing Trip ◽  
Gill Net

The purpose of this study was to determine the yield and type of catch, the comparison of the number of catches and the efforts to manage electronic FADs on Gill Net fishing gear. This research was conducted in Bulukumba waters from February to March 2017. Data collection was carried out by direct observation of fishermen in Bulukumba waters. The samples used in this study were FADs installed by fishermen in the waters of Bulukumba as many as 20 locations. Based on the research results, fish catches with electronic FADs ranged from 98 to 131 fish per fishing trip with a total catch of 2,324 fish. Meanwhile, the usual FAD catches ranged from 51 to 84 fish per fishing trip with a total catch of 1,313 fish and the highest type of fish was selar, followed by male mackerel, Selar bentong, white Kuwe, Layang, Barracuda, selangat and Mata goyang. The ratio between the catch and the use of electronic FADs was 64%, while the regular FADs were 36%. Considering that FADs are an effective tool in collecting fish, a sustainable management strategy is needed, including by (1) community based management, (2) limiting fishing efforts, (3) stopping the addition of shallow marine FADs. , (4) use of fishing gear with large mesh sizes and (5) prioritize the use of deep sea FADs.

Status, Distribution, and Conservation of Native Freshwater Fishes of Western North America

2007 ◽  
Keyword(s):  
North America ◽  
Reliable Method ◽  
State University ◽  
Lake Whitefish ◽  
Utah State University ◽  
Bottom Trawling ◽  
Bear Lake ◽  
Gill Net ◽  
Catch Rates ◽  
Average Catch

ABSTRACT Populations of the four Bear Lake endemic species, Bonneville cisco <em>Prosopium gemmifer</em>, Bonneville whitefish <em>P. spilonotus</em>, Bear Lake whitefish <em>P. abyssicola</em>, and Bear Lake sculpin <em>Cottus extensus</em>, were monitored by Utah Division of Wildlife Resources and/or Utah State University. Bonneville cisco populations have been monitored annually since 1990 using hydroacoustic sampling. The population has ranged from 1.9 to 9.7 million fish. Because no reliable method was available to determine whitefish species identification prior to 1999, the whitefish population was monitored from 1973 to 1998 by lumping the catches of both species and referring to them as the “whitefish complex.” In 1999, the Utah Division of Wildlife Resources began recording the percentage of gill-net catch comprised by Bonneville and Bear Lake whitefish. Bonneville whitefish comprised between 84% and 94% of the gill-net catch while Bear Lake whitefish comprised between 6% and 16%. Relative abundance of Bear Lake sculpin was monitored biennially since 1998 using catch rates from bottom trawling. Average catch per 20-min trawl at both the top and bottom of the thermocline at three different sites ranged from 37 fish to 79 fish.

Bottom-trawl catch composition in a highly polluted coastal area reveals multifaceted native biodiversity and complex communities of fouling organisms on litter discharge

2020 ◽  
Vol 155 ◽  
pp. 104875 ◽  
Author(s):  
Fabio Crocetta ◽  
Emilio Riginella ◽  
Marco Lezzi ◽  
Valentina Tanduo ◽  
Liliana Balestrieri ◽  
...  
Keyword(s):  
Coastal Area ◽  
Bottom Trawl ◽  
Trawl Catch ◽  
Fouling Organisms ◽  
Catch Composition

scholarly journals Gill net catch composition and catch per unit effort in Flag Boshielo Dam, Limpopo Province, South Africa

Water SA ◽  
2017 ◽  
Vol 43 (3) ◽  
pp. 463 ◽  
Author(s):  
J.R. Sara ◽  
O.L.F. Weyl ◽  
S.M. Marr ◽  
W.J. Smit ◽  
P.S.O. Fouché ◽  
...  
Keyword(s):  
South Africa ◽  
Limpopo Province ◽  
Catch Per Unit Effort ◽  
Unit Effort ◽  
Gill Net ◽  
Catch Composition

Alien and native fish in gill nets at Rhodes, eastern Mediterranean (2014–2015)

2017 ◽  
Vol 97 (3) ◽  
pp. 635-642 ◽  
Author(s):  
Maria Corsini-Foka ◽  
Stefanos Mastis ◽  
Gerasimos Kondylatos ◽  
Ioannis E. Batjakas
Keyword(s):  
Native Species ◽  
Fish Assemblages ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Total Biomass ◽  
Coastal Fish ◽  
Gill Net ◽  
Fish Catch ◽  
Siganus Rivulatus ◽  
Catch Composition

Fish catch composition in 21 gill net samplings performed between 2014 and 2015 at Rhodes Island (Aegean Sea, Greece) was analysed, with the aim to contribute in filling scattered information on coastal fish assemblages in a Mediterranean region heavily impacted by biological invasions. A total biomass of 183 kg was collected comprising 1070 fish individuals, distributed along 43 native and six Lessepsian migrant species. The alien Siganus luridus prevailed in terms of frequency of occurrence, followed by the native Sparisoma cretense, which exhibited the higher abundance and biomass, followed by S. luridus, Scorpaena scrofa and Siganus rivulatus. Ratios between alien and native species as well as between their abundance and biomass are discussed.

Economic Analysis for Coastal Principal Function Selection: Case Study of Xiamen Bay

2011 ◽  
Vol 347-353 ◽  
pp. 1214-1219
Author(s):  
Jing Shan Cai ◽  
Wei Qi Chen
Keyword(s):  
Economic Analysis ◽  
Coastal Area ◽  
Large Population ◽  
Research Area ◽  
Coastal Resources ◽  
Principal Function ◽  
Coastal Tourism ◽  
Xiamen Bay ◽  
Function Selection ◽  
Port Transportation

The coastal zone is a dense human activity area, and has been under the heavy pressure from large population centers and various human activities. The scarcity and the use conflicts of coastal resources have become increasingly prominent problems. Coastal principal function zoning is an effective approach to solving these problems, and a helpful way to optimize resources allocation and support sustainable development. Determining the principal function is a key step in coastal principal function zoning. In this paper we make an attempt to apply economic analysis to the principal function selection in the coastal area of Xiamen Bay. Based on the distribution and characteristics of coastal resources, and the opinion of local residents revealed by a questionnaire investigation, we set two scenarios as alternative principal functions, i.e. to develop coastal tourism as a priority or to fully develop commercial port transportation in the research area. The net benefits of Scenario 1 and 2 are calculated by the constructed formulas, and the results are 3.4×1010 RMB Yuan/a and 7.4×109 RMB Yuan/a, respectively. Based on the economic analysis, we propose that coastal tourism should be chosen as the principal function in the coastal area of Xiamen Bay.

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