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Fishes, Volume 7, Issue 5

2022 October - 89 articles

Cover Story: Environmental DNA (eDNA) detection is a non-invasive monitoring technique that is transforming environmental surveys for both rare and abundant aquatic species. A current challenge for using eDNA data in making management decisions is to distinguish low detection rates during field sampling from some background level of false-positive error. Experimental determination of this background level and the integration of the background into the performance of eDNA assays is critical for confidence in eDNA detections from sites where target species presence is unknown. We present a novel approach to account for low-signal environmental backgrounds in eDNA surveys using coho salmon as an example, which provides a statistically robust “Detect” or “No Detect” assessment method for eDNA surveys. View this paper
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Articles (89)

  • Feature Paper
  • Article
  • Open Access
9 Citations
3,485 Views
14 Pages

Larval Retention and Homing Behaviour Shape the Genetic Structure of the Bullet Tuna (Auxis rochei) in the Mediterranean Sea

  • Judith Ollé-Vilanova,
  • Núria Pérez-Bielsa,
  • Rosa Maria Araguas,
  • Núria Sanz,
  • Sámar Saber,
  • David Macías and
  • Jordi Viñas

21 October 2022

Background: The bullet tuna (Auxis rochei) is an epipelagic fish with a worldwide distribution that is highly targeted by fisheries. Genetic diversity and population genetics are good indicators of population structure and thus, essential tools for f...

  • Article
  • Open Access
5 Citations
3,480 Views
14 Pages

21 October 2022

The omul, Coregonus migratorius (Georgi, 1775), an endemic fish of Lake Baikal, is the main commercial species of essential economic importance for the extensive region of Eastern Siberia. Despite the continuous 250-year study of Baikal omul and inte...

  • Article
  • Open Access
11 Citations
4,564 Views
22 Pages

21 October 2022

Anti-Müllerian hormone (amh), an important regulator of gonad development in male teleosts, regulates the development and differentiation of germ cells. We performed transcriptional knock-down of amh in Nile tilapia (Oreochromis niloticus) using...

  • Feature Paper
  • Article
  • Open Access
2 Citations
2,564 Views
16 Pages

20 October 2022

PIWI-interacting RNAs (piRNAs) are an emerging class of small RNAs which protect the animal germline genome against deleterious transposable elements. Nevertheless, the characteristics and sex-related expression patterns of piRNA in Collichthys lucid...

  • Article
  • Open Access
9 Citations
2,621 Views
12 Pages

19 October 2022

Color preference testing for animals is a prerequisite for optimizing facilities and ensuring animal welfare in aquaculture. Swimming crabs (Portunus trituberculatus) are aggressive, and shelters are often installed in ponds to reduce the high mortal...

  • Article
  • Open Access
3 Citations
2,630 Views
18 Pages

19 October 2022

The neon flying squid (Ommastrephes bartramii) plays an important ecological role in the North Pacific. An analysis of stable isotopes in eye lenses was conducted to investigate the inter- and intravariation of the trophic ecology of stocks at the ea...

  • Article
  • Open Access
3 Citations
3,101 Views
18 Pages

Whole-Body Toxic Metals and Morphometric Measurements in Brown Shrimp Penaeus aztecus in the Gulf of Mexico

  • María del Refugio Castañeda-Chávez,
  • Gabycarmen Navarrete-Rodríguez,
  • Armando T. Wakida-Kusunoki,
  • Ernesto Baruch-Garduza and
  • David Reynier-Valdés

19 October 2022

Fishing of the brown shrimp Penaeus aztecus is an important socioeconomic activity, generating income and different jobs for the fishing sector; however, this species is exposed to contaminants such as toxic metals. The objective of this research was...

  • Brief Report
  • Open Access
3 Citations
4,777 Views
8 Pages

Detection of Macrobrachium rosenbergii Nodavirus (MrNV) of White Tail Disease (WTD) in Apparently Healthy Giant Freshwater Prawn, Macrobrachium rosenbergii in Korea

  • Gwang Il Jang,
  • Bo Seong Kim,
  • Su Mi Kim,
  • Yun Kyeong Oh,
  • Jae Ok Kim,
  • Jee Youn Hwang,
  • Soon Jeong Lee,
  • Sung Youl Hong and
  • Mun Gyeong Kwon

19 October 2022

White tail disease (WTD) is caused by the Macrobrachium rosenbergii nodavirus (MrNV) and an extra-small virus (XSV). MrNV belongs to the Nodaviridae family. While the role of XSV in the pathogenicity of WTD remains unclear, MrNV is considered to be a...

  • Article
  • Open Access
2 Citations
2,581 Views
12 Pages

19 October 2022

Schizothorax kozlovi, as an endemic and vulnerable fish of the upper Yangtze River in China, faces many threats. In order to expose the population structure of wild S. kozlovi, the carbon and oxygen isotopic ratios in the otoliths, and the gene seque...

  • Article
  • Open Access
11 Citations
3,943 Views
15 Pages

18 October 2022

To assess the lipid requirements of O. macrolepis broodstock, five iso-nitrogenous diets (39 g kg−1) with five lipid levels, 50 (5 L), 70 (7 L), 90 (9 L),110 (11 L), and 130 (13 L; g kg−1), were made. A total of 105 three-year-old individ...

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Fishes - ISSN 2410-3888