Fin Length and Total Length Relationships of Silky Shark <i>Carcharhinus falciformis</i> Landed at Tanjung Luar Fish Landing Port, West Nusa Tenggara, Indonesia

Oktaviyani, Selvia; Kurniawan, Wanwan; Fahmi, Fahmi

doi:10.1051/e3sconf/202014702011

Cited by 2 publications

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“…One of the most frequent employment of this method is in This paper aims to investigate the use of the proposed direction in describing the relationship between fin dorsal length and the total length of silky shark. The data were collected by [32] from March 2018 to February 2019 at Tanjung Luar Fish Landing Post, West Nusa Tenggara. The study was carried out to set the minimum size of fin products for international trade and the author also pointed out that this data can be used by the fisheries authority to determine the allowed minimum size of silky shark fins for export.…”

Section: Implementation In the Regression Modelmentioning

confidence: 99%

An Efficient Three-Term Iterative Method for Estimating Linear Approximation Models in Regression Analysis

et al. 2020

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This study employs exact line search iterative algorithms for solving large scale unconstrained optimization problems in which the direction is a three-term modification of iterative method with two different scaled parameters. The objective of this research is to identify the effectiveness of the new directions both theoretically and numerically. Sufficient descent property and global convergence analysis of the suggested methods are established. For numerical experiment purposes, the methods are compared with the previous well-known three-term iterative method and each method is evaluated over the same set of test problems with different initial points. Numerical results show that the performances of the proposed three-term methods are more efficient and superior to the existing method. These methods could also produce an approximate linear regression equation to solve the regression model. The findings of this study can help better understanding of the applicability of numerical algorithms that can be used in estimating the regression model.

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Section: Implementation In the Regression Modelmentioning

confidence: 99%

An Efficient Three-Term Iterative Method for Estimating Linear Approximation Models in Regression Analysis

et al. 2020

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DNA-based species identification of shark fins traded in thai markets

Klangnurak

Arunrugstichai²,

Manopawitr³

et al. 2023

Conserv Genet

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Shark fins are among the most highly prized seafood products in the world with massive consumption in Asia over the past several decades. The demand for shark fins is a major driver of the enormous population declines of elasmobranchs that are generally vulnerable to overexploitation. This study aims to better understand the species composition of shark fin products in Thailand and their conservation statuses by using DNA-based species identification. Various types and sizes of shark fins were collected from 4 locations in Thailand. DNA barcoding method based on a fragment of the cytochrome c oxidase subunit I (COI) gene was applied to species identification. Fins from at least 15 shark species were found from Thailand’s markets. The spottail shark (Carcharhinus sorrah ) and the night shark (Carcharhinus signatus ) were the two dominant species presented in this study. 34% of identifiable samples are the species that have not been record in this region. 62% of species detected from the fin samples are categorized under the threatened categories of IUCN Red List. Species composition reported in shark fin products potentially helps indicate the appropriate conservation action and increases awareness from monitoring the trade in elasmobranch products. Supplementary Information The online version contains supplementary material available at 10.1007/s10592-023-01519-0.

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Fin Length and Total Length Relationships of Silky Shark Carcharhinus falciformis Landed at Tanjung Luar Fish Landing Port, West Nusa Tenggara, Indonesia

Cited by 2 publications

References 10 publications

An Efficient Three-Term Iterative Method for Estimating Linear Approximation Models in Regression Analysis

An Efficient Three-Term Iterative Method for Estimating Linear Approximation Models in Regression Analysis

DNA-based species identification of shark fins traded in thai markets

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