Estimating the national fishing mortality of Southern Bluefin Tuna Thunnus maccoyii from Australia’s recreational fishing sector

2021 ◽  
Author(s):  
Sean R. Tracey ◽  
Jeremy M. Lyle ◽  
Kate E. Stark ◽  
Scott Gray ◽  
Anthony Moore ◽  
...  
Keyword(s):  
Bluefin Tuna ◽  
Recreational Fishing ◽  
Fishing Mortality ◽  
Fishing Sector ◽  
Southern Bluefin Tuna

Metazoan parasites on gills of Southern Bluefin Tuna (Thunnus maccoyii) do not rapidly proliferate after transfer to sea cages

Aquaculture ◽  
2007 ◽  
Vol 262 (1) ◽  
pp. 10-16 ◽  
Author(s):  
Craig J. Hayward ◽  
Hamish M. Aiken ◽  
Barbara F. Nowak
Keyword(s):  
Bluefin Tuna ◽  
Metazoan Parasites ◽  
Southern Bluefin Tuna

The Australia and New Zealand v Japan Southern Bluefin Tuna (Jurisdiction and Admissibility) Award of the First Law of the Sea Convention Annex VII Arbitral Tribunal

2001 ◽  
Vol 16 (2) ◽  
pp. 239-293 ◽  
Author(s):  
Barbara Kwiatkowska
Keyword(s):  
New Zealand ◽  
Bluefin Tuna ◽  
Fundamental Principle ◽  
Law Of The Sea ◽  
Arbitral Tribunal ◽  
Compulsory Arbitration ◽  
Wide Range ◽  
The Future ◽  
Questions And Answers ◽  
Southern Bluefin Tuna

AbstractThe Southern Bluefin Tuna (Jurisdiction and Admissihilily) Award of 4 August 2000 marked the first instance of the application of compulsory arbitration under Part XV, Section 2 of the 1982 UN Law of the Sea Convention and of the exercise by the Annex VII Tribunal of la compétence de la compétence pursuant to Article 288(4) over the merits of the instant dispute. The 72-paragraph Award is a decision of pronounced procedural complexity and significant multifaceted impacts of which appreciation requires an in-depth acquaintance with procedural issues of peaceful settlement of disputes in general and the-law-of-the-sea-related disputes in particular. Therefore, the article surveys first the establishment of and the course of proceedings before the five-member Annex VII Arbitral Tribunal, presided over by the immediate former ICJ President, Judge Stephen M. Schwebel, and also comprising Judges Keith, Yamada. Feliciano and Tresselt. Subsequently, the wide range of specific paramount questions and answers of the Tribunal are scrutinised against the background of arguments advanced by the applicants (Australia and New Zealand) and the respondent (Japan) during both written and oral pleadings, including in reliance on the extensive ICJ jurisprudence and treaty practice concerned. On this basis, the article turns to an appraisal of the impacts of the Arbitral Tribunal's paramount holdings and its resultant dismissal of jurisdiction with the scrupulous regard for the fundamental principle of consensuality. Amongst such direct impacts as between the parties to the instant case, the inducements provided by the Award to reach a successful settlement in the future are of particular importance. The Award's indirect impacts concern exposition of the paramount doctrine of parallelism between the umbrella UN Convention and many compatible (fisheries, environmental and other) treaties, as well as of multifaceted, both substantial and procedural effects of that parallelism. All those contributions will importantly guide other courts and tribunals seised in the future under the Convention's Part XV, Section 2.

scholarly journals Prediction of the Sex-Associated Genomic Region in Tunas (Thunnus Fishes)

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Yoji Nakamura ◽  
Kentaro Higuchi ◽  
Kazunori Kumon ◽  
Motoshige Yasuike ◽  
Toshinori Takashi ◽  
...  
Keyword(s):  
Sex Determination ◽  
Bluefin Tuna ◽  
Pacific Bluefin Tuna ◽  
Estrogen Sulfotransferase ◽  
Unique Region ◽  
Genome Wide ◽  
A Genome ◽  
Southern Bluefin Tuna ◽  
Male Specific ◽  
Female Genome

Fish species have a variety of sex determination systems. Tunas (genus Thunnus) have an XY genetic sex determination system. However, the Y chromosome or responsible locus has not yet been identified in males. In a previous study, a female genome of Pacific bluefin tuna (T. orientalis) was sequenced, and candidates for sex-associated DNA polymorphisms were identified by a genome-wide association study using resequencing data. In the present study, we sequenced a male genome of Pacific bluefin tuna by long-read and linked-read sequencing technologies and explored male-specific loci through a comparison with the female genome. As a result, we found a unique region carrying the male-specific haplotype, where a homolog of estrogen sulfotransferase gene was predicted to be encoded. The genome-wide mapping of previously resequenced data indicated that, among the functionally annotated genes, only this gene, named sult1st6y, was paternally inherited in the males of Pacific bluefin tuna. We reviewed the RNA-seq data of southern bluefin tuna (T. maccoyii) in the public database and found that sult1st6y of southern bluefin tuna was expressed in all male testes, but absent or suppressed in the female ovary. Since estrogen sulfotransferase is responsible for the inactivation of estrogens, it is reasonable to assume that the expression of sult1st6y in gonad cells may inhibit female development, thereby inducing the individuals to become males. Thus, our results raise a promising hypothesis that sult1st6y is the sex determination gene in Thunnus fishes or at least functions at a crucial point in the sex-differentiation cascade.

Sign in / Sign up

Export Citation Format

Share Document