scholarly journals Prior versus data: A new Bayesian method for fishery stock assessment

2021 ◽  
Keyword(s):  
Bayesian Method ◽  
Stock Assessment ◽  
Versus Data

Application of a Bayesian method to data-poor stock assessment by using Indian Ocean albacore (Thunnus alalunga) stock assessment as an example

2016 ◽  
Vol 35 (2) ◽  
pp. 117-125 ◽  
Author(s):  
Wenjiang Guan ◽  
Lin Tang ◽  
Jiangfeng Zhu ◽  
Siquan Tian ◽  
Liuxiong Xu
Keyword(s):  
Indian Ocean ◽  
Bayesian Method ◽  
Stock Assessment ◽  
Thunnus Alalunga

FIRST RECORD AND INITIAL HYDROACOUSTIC STOCK ASSESSMENT OF POLLAN COREGONUS AUTUMNALIS PALLAS IN LOUGH ALLEN, IRELAND

2010 ◽  
Vol 110 (1) ◽  
pp. 69-74 ◽  
Author(s):  
Andrew J. Harrison ◽  
Fiona L. Kelly ◽  
Robert S. Rosell ◽  
Trevor W.S. Champ ◽  
Lynda Connor ◽  
...  
Keyword(s):  
Stock Assessment ◽  
First Record

THE STOCK ASSESSMENT OF OTOLITHES RUBER IN NORTH-WEST ARABIAN GULF

2010 ◽  
Vol 23 (0) ◽  
pp. 1-14
Author(s):  
Amina A. Hashim ◽  
A.R.M.Mohamed ◽  
Amjad K. Resen
Keyword(s):  
Stock Assessment ◽  
Arabian Gulf ◽  
North West ◽  
Otolithes Ruber

Fecundity and Gonado-somatic Index of Trichiurus lepturus (Linnaeus, 1758) Along the Zamboanga del Norte Coast

2018 ◽  
Vol 6 (7) ◽  
pp. 120
Author(s):  
Ma. Dulce C. Guillena
Keyword(s):  
Sex Ratio ◽  
Stock Assessment ◽  
Chi Square ◽  
Moon Phases ◽  
Ovary Weight ◽  
Moment Coefficient ◽  
Trichiurus Lepturus ◽  
Significant Difference ◽  
The Relationship ◽  
Somatic Index

Gonado-somatic index and fecundity are tools for measuring the sexual maturity and ability of animals to reproduce.  This study investigates the reproduction of Trichiurus lepturus. Specifically, this aimed to determine the sex ratio, the GSI, the relationship between fecundity and total length, fecundity and total weight, fecundity and ovary weight. The Descriptive Method of research was used.  Percentage and chi-square was utilized in determining the percentage of occurrence and sex ratio respectively.   Pearson r Product Moment Coefficient of Correlation was used to determine the relationships of the parameters. The study revealed that females outnumbered males and the sex ratio for different month showed significant difference.  Spawning season was observed to occur in November and December as revealed in its GSI values and it synchronized with the full and new moon phases.  Fecundity is positively correlated with body weight, body size, and ovary weight where ovary weight is observed to be the best index for fecundity.  The results of this study could be used further for formal stock assessment of cutlassfish fishery.

BAYESIAN METHOD FOR RAPID MULTI-WELL INTERPRETATION OF WELL LOGS AND CORE DATA IN UNCONVENTIONAL FORMATIONS

2020 ◽  
Author(s):  
Tianqi Deng ◽  
◽  
Joaquín Ambía ◽  
Carlos Torres-Verdín ◽  
◽  
...  
Keyword(s):  
Bayesian Method ◽  
Well Logs ◽  
Core Data

Recount pirarucu: a method for evaluating the quality of the pirarucu counts.

2011 ◽  
Vol 7 (1) ◽  
pp. 29-40 ◽  
Author(s):  
Lorena Candice de Araújo Andrade ◽  
Ellen Silvia Ramos Amaral ◽  
Nataluzo Balbino da Silva ◽  
Helder Lima de Queiroz
Keyword(s):  
Management System ◽  
Main Parameter ◽  
Stock Assessment ◽  
Counting Method ◽  
Technical Staff

The pirarucu counting method is a simplified stock assessment that has been used as the main parameter for establishing the annual fishing quotas in the management system of the Mamirauá and Amanã Reserves. In spite of the method’s directness, considering the recent expansion of managed fisheries, we cannot confirm that the counters thoroughly obey the original methodology. There is a concern of a technical nature, as the results of the counts directly influence the fishing quotas, and the lack of technical supervision or the inadequate application of the method are factors that can compromise the management system as a whole. This study aims to assess the counts that took place in six fishing environments of the Jarauá Sector, Mamirauá Reserve, and in four fishing environments of the area of the Pantaleão Fishing Agreement Complex, Amanã Reserve. We verified the consistency of the information resulting from the count, presented to the technical staff. To do this, we conducted recounts of juvenile and adult pirarucus in the same environments. In the Jarauá Sector we found significant differences in the counting results from Samaumerinha do Tucuxi and Curuçá do Centro. In Comprido do Maciel we found differences regarding the number of counted areas. In the sampled environments from the Pantaleão region we did not find significant differences between the counts. The results highlight the importance of creating assessment mechanisms for the counts, for the purpose of preventing possible alterations in the results that might influence the fishing quotas without a biological reason for justifying such quotas.

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