Dataset Information

Complete mitochondrial genome of brownstripe red snapper, Lutjanus vitta (Perciformes: Lutjanidae).

ABSTRACT: The complete mitochondrial genome of the brownstripe red snapper, Lutjanus vitta was determined by MiSeq sequencing platform. The mitogenome of L. vitta (16,498 bp) encoded the typical 13 protein-coding genes, 22 tRNA genes, two rRNA genes, and two non-coding regions (origin of light strand replication; O_L and D-Loop control region; CR). Phylogenetic analysis based on the full mitochondrial genome sequences showed that L. vitta is most closely related to L. russellii. The complete mitogenome sequence of L. vitta would provide the information of the genetic biodiversity in Lutjanus fishes, which would be further used for their scientific management in Indonesian waters.

SUBMITTER: Andriyono S

PROVIDER: S-EPMC7800194 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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Complete mitochondrial genome of brownstripe red snapper, Lutjanus vitta (Perciformes: Lutjanidae).

Andriyono Sapto S Alam Jobaidul J Kwak Dong Hee DH Kim Hyun-Woo HW

Mitochondrial DNA. Part B, Resources 20181008 2

The complete mitochondrial genome of the brownstripe red snapper, Lutjanus vitta was determined by MiSeq sequencing platform. The mitogenome of L. vitta (16,498 bp) encoded the typical 13 protein-coding genes, 22 tRNA genes, two rRNA genes, and two non-coding regions (origin of light strand replication; OL and D-Loop control region; CR). Phylogenetic analysis based on the full mitochondrial genome sequences showed that L. vitta is most closely related to <i ...[more]

PMID: 33474442

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Project description:Habitat shifts that occur during the life cycles of marine fishes influence population connectivity and structure. A generalized additive modeling approach was used to characterize relationships between environmental variables and the relative abundance of red snapper Lutjanus campechanus over unconsolidated substrate on the continental shelf (<150 m) of the U.S. Gulf of Mexico (GoM) at three different life stages: juvenile (age-0, <125 mm FL), sub-adult (age-1-2, 125-300 mm FL), and adult (age-2+, >300 mm FL). Fisheries independent data (2008-2014) were used to develop separate models for both the eastern and western GoM, and final models were used to predict the relative availability of suitable habitat for each life stage across the two regions. Predictor variables included in final models varied by age class and region, with depth, dissolved oxygen, longitude, and distance to artificial structure common to most models. Depth was among the most influential variables in all models, and preferred depth increased with increasing size/age. Regional differences in fish-habitat relationships were also observed, as relative abundance of larger red snapper over unconsolidated substrates was more closely linked to artificial structure in the eastern GoM. The location of predicted high quality habitat for juvenile red snapper was greatest on the inner Texas shelf and a smaller area east of the Mississippi River Delta, suggesting these two areas may represent important nursery grounds for the respective regions. Clear ontogenetic shifts in the spatial distribution of predicted high quality habitat were evident in both the eastern (expansion from west to east with age) and western (shift from inshore to offshore) GoM. Given the unique population dynamics between the eastern and western GoM, improving our understanding of spatial and temporal variability in habitat quality may be important to maintaining connectivity between juvenile and adult habitats, and may enhance recovery and management of red snapper stocks in the GoM.

Project description:The fish external microbiota competitively excludes primary pathogens and prevents the proliferation of opportunists. A shift from healthy microbiota composition, known as dysbiosis, may be triggered by environmental stressors and increases host susceptibility to disease. The Deepwater Horizon (DWH) oil spill was a significant stressor event in the Gulf of Mexico. Despite anecdotal reports of skin lesions on fishes following the oil spill, little information is available on the impact of dispersed oil on the fish external microbiota. In this study, juvenile red snapper (Lutjanus campechanus) were exposed to a chemically enhanced water-accommodated fraction (CEWAF) of Corexit 9500/DWH oil (CEWAF) and/or the bacterial pathogen Vibrio anguillarum in treatments designed to detect changes in and recovery of the external microbiota. In fish chronically exposed to CEWAF, immunoglobulin M (IgM) expression significantly decreased between 2 and 4 weeks of exposure, coinciding with elevated liver total polycyclic aromatic hydrocarbons (PAHs). Dysbiosis was detected on fish chronically exposed to CEWAF compared to seawater controls, and addition of a pathogen challenge altered the final microbiota composition. Dysbiosis was prevented by returning fish to clean seawater for 21 days after 1 week of CEWAF exposure. Four fish exhibited lesions during the trial, all of which were exposed to CEWAF but not all of which were exposed to V. anguillarum. This study indicates that month-long exposure to dispersed oil leads to dysbiosis in the external microbiota. As the microbiota is vital to host health, these effects should be considered when determining the total impacts of pollutants in aquatic ecosystems. IMPORTANCE Fish skin is an immunologically active tissue. It harbors a complex community of microorganisms vital to host homeostasis as, in healthy fish, they competitively exclude pathogens found in the surrounding aquatic environment. Crude oil exposure results in immunosuppression in marine animals, altering the relationship between the host and its microbial community. An alteration of the healthy microbiota, a condition known as dysbiosis, increases host susceptibility to pathogens. Despite reports of external lesions on fishes following the DWH oil spill and the importance of the external microbiota to fish health, there is little information on the effect of dispersed oil on the external microbiota of fishes. This research provides insight into the impact of a stressor event such as an oil spill on dysbiosis and enhances understanding of long-term sublethal effects of exposure to aid in regulatory decisions for protecting fish populations during recovery.

Dataset Information

Complete mitochondrial genome of brownstripe red snapper, Lutjanus vitta (Perciformes: Lutjanidae).

Publications

Complete mitochondrial genome of brownstripe red snapper, <i>Lutjanus vitta</i> (Perciformes: Lutjanidae).

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