Conservation of Aquatic Vertebrates: Challenges and Opportunities

A special issue of Biology (ISSN 2079-7737). This special issue belongs to the section "Conservation Biology and Biodiversity".

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 6514

Special Issue Editors


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Guest Editor
Department of Biosciences, Swansea University, Swansea, UK
Interests: evolutionary ecology; conservation genetics/omics

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Guest Editor
Hajibabaei Lab, Centre for Biodiversity Genomics, University of Guelph, Guelph, ON, Canada
Interests: environmental DNA, citizen science/community-based monitoring; aquatic ecology

Special Issue Information

Dear Colleagues,

Overfishing, pollution, habitat fragmentation, and invasive species are among the pressures that humans are imposing on aquatic ecosystems. Freshwater, marine, and estuarine environments provide critical ecosystem services essential for human survival, such as water, food, and carbon sequestration; however, in order to perform their natural function, aquatic ecosystems need to be diverse and resilient. An important part of this diversity is composed of aquatic vertebrates, from the more than 30,000 species of fish, to marine mammals and a broad range of species with varied dependence on aquatic life, but freshwater fish, amphibians, and marine mammals are some of the most endangered species on Earth. Reflecting the diverse nature of aquatic ecosystems and the urgency to protect and conserve their biodiversity, new tools and strategies have quickly been developed in recent decades, including the use of environmental DNA and acoustic methods for monitoring, animal telemetry and modelling approaches to estimate animal movement and energy budgets, and community-based stewardship for sharing local ecological knowledge and data collection. Oceans and freshwater ecosystems are also becoming the target of new funding appeals, such as the EU Green Deal, which aims to tackle climate change and achieve more sustainable economies. This Special Issue welcomes high-quality submissions of original research, perspectives, reviews, or new methods focused on challenges and new opportunities for the conservation and management of aquatic vertebrates, with the aim to provide a multidisciplinary overview of this timely topic.

Please get in touch if you are interested in submitting a manuscript or if you need any further information.

Prof. Dr. Sofia Consuegra
Dr. Chloe Robinson
Guest Editors

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Keywords

  • marine and freshwater vertebrates
  • anthropomorphic change
  • marine and fresh water ecology and conservation
  • marine and freshwater conservation genetics(omics)
  • monitoring tools

Published Papers (2 papers)

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Research

12 pages, 1794 KiB  
Article
Genetic Diversity and Population Differentiation of Kashgarian Loach (Triplophysa yarkandensis) in Xinjiang Tarim River Basin
by Xiaoyun Zhou, Shaokui Yi, Wenhao Zhao, Qiong Zhou, Jianzhong Shen, Dapeng Li, Bin Huo and Rong Tang
Biology 2021, 10(8), 734; https://doi.org/10.3390/biology10080734 - 1 Aug 2021
Cited by 8 | Viewed by 2686
Abstract
The distribution of Triplophysa yarkandensis is restricted to Xinjiang’s Tarim River basin. We collected 119 T. yarkandensis samples from nine geographic populations in the Tarim River basin and utilized the RAD-seq method for SNP genotyping. In this study, a total of 164.81 Gb [...] Read more.
The distribution of Triplophysa yarkandensis is restricted to Xinjiang’s Tarim River basin. We collected 119 T. yarkandensis samples from nine geographic populations in the Tarim River basin and utilized the RAD-seq method for SNP genotyping. In this study, a total of 164.81 Gb bases were generated with the Illumina platform, and 129,873 candidate SNPs were obtained with the Stacks pipeline for population genetic analyses. High levels of genetic diversity were detected among nine populations. The AMOVA results showed that the majority of genetic variations originated from among populations (FST = 0.67), and the pairwise FST values ranged from 0.4579 to 0.8736, indicating high levels of genetic differentiation among these populations. The discriminate analysis of principal components (DAPCs) and neighbor joining (NJ) tree revealed that the nine populations could be separated into two clusters (i.e., south and north populations), and modest genetic differentiation between south and north populations was observed, while the individuals from several populations were not clustered together by geographical location. The evidence of two genetic boundaries between south and north populations (except TTM) was supported by barrier analysis. The Bayesian skyline plotting indicated that T. yarkandensis populations in the Tarim River basin had not experienced genetic bottlenecks, and the effective population size remained stable. This study first clarified the genetic diversity and differentiation of T. yarkandensis populations in the Tarim River basin, and it provided valuable molecular data for conservation and management of natural populations. Full article
(This article belongs to the Special Issue Conservation of Aquatic Vertebrates: Challenges and Opportunities)
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18 pages, 3575 KiB  
Article
Contributions to Management Strategies in the NE Atlantic Regarding the Life History and Population Structure of a Key Deep-Sea Fish (Mora Moro)
by Régis Santos, Wendell Medeiros-Leal, Osman Crespo, Ana Novoa-Pabon and Mário Pinho
Biology 2021, 10(6), 522; https://doi.org/10.3390/biology10060522 - 11 Jun 2021
Cited by 7 | Viewed by 3082
Abstract
With the commercial fishery expansion to deeper waters, some vulnerable deep-sea species have been increasingly captured. To reduce the fishing impacts on these species, exploitation and management must be based on detailed and precise information about their biology. The common mora Mora moro [...] Read more.
With the commercial fishery expansion to deeper waters, some vulnerable deep-sea species have been increasingly captured. To reduce the fishing impacts on these species, exploitation and management must be based on detailed and precise information about their biology. The common mora Mora moro has become the main deep-sea species caught by longliners in the Northeast Atlantic at depths between 600 and 1200 m. In the Azores, landings have more than doubled from the early 2000s to recent years. Despite its growing importance, its life history and population structure are poorly understood, and the current stock status has not been assessed. To better determine its distribution, biology, and long-term changes in abundance and size composition, this study analyzed a fishery-dependent and survey time series from the Azores. M. moro was found on mud and rock bottoms at depths below 300 m. A larger–deeper trend was observed, and females were larger and more abundant than males. The reproductive season took place from August to February. Abundance indices and mean sizes in the catch were marked by changes in fishing fleet operational behavior. M. moro is considered vulnerable to overfishing because it exhibits a long life span, a large size, slow growth, and a low natural mortality. Full article
(This article belongs to the Special Issue Conservation of Aquatic Vertebrates: Challenges and Opportunities)
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