The Complete Mitochondrial Genome of Pennella sp. Parasitizing Thunnus albacares

Liu, Hongyan; Fu, Zhengyi; Zhou, Shengjie; Hu, Jing; Yang, Rui; Yu, Gang; Ma, Zhenhua

doi:10.3389/fcimb.2022.945152

Cited by 5 publications

(4 citation statements)

References 19 publications

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“…Yellowfin tuna is a kind of economically important fish, popular among the public, belonging to the mackerel family and tuna genus. The species is found in tropical and subtropical waters, mainly in the Pacific, Atlantic and Indian Oceans [ 8 ]. As a result, tuna has become an important source of income for many countries, including Japan, the European Union, and the United States [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Acute thermal stress increased enzyme activity and muscle energy distribution of yellowfin tuna

Liu,

Yang,

et al. 2023

PLoS ONE

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Heat is a powerful stressor for fish living in natural and artificial environments. Understanding the effects of heat stress on the physiological processes of fish is essential for better aquaculture and fisheries management. In this experiment, a heating rod was used to increase the temperature at 2°C/h to study the changes of energy allocation (CEA) and energy metabolity-related enzyme activities, including pepsin, trypsin, amylase, lipase, acid phosphatase, lactate dehydrogenase, alanine aminotransferase, glutamic oxalic aminotransferase and energy reserve (Ea), energy expenditure (ETS), in juvenile yellowfin tuna cells under acute temperature stress. The results showed that the Ea of juvenile yellowfin tuna muscles in response to high temperature (34°C) was significantly lower than that of the control (28°C), and it also increased ETS. At 6 h, CEA decreased slightly in the high-temperature group, but, the difference in CEA between 24 h and 0 h decreased. After heat stress for 6 h, the activities of acid phosphatase (ACP), lactate dehydrogenase (LDH), alanine aminotransferase (ALT) and glutamic oxalacetic transaminase (AST) increased, indicating that the metabolic rate was accelerated. After heat stress for 24 h, the activity of ALT decreased, indicating that with time elapsed, the activities of some protein metabolizing enzymes increased, and some decreased. In this study, digestive enzymes, trypsin and lipase increased gradually. After heat stress, Ea and Ec change significantly. Yellowfin tuna muscles use lipids in response to sharp temperature increases at high temperatures, red muscles respond to temperature changes by increasing energy in the early stages, but not nearly as much, and white muscles reduce lipids.

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Section: Introductionmentioning

confidence: 99%

Acute thermal stress increased enzyme activity and muscle energy distribution of yellowfin tuna

Liu,

Yang,

et al. 2023

PLoS ONE

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“…The protein-coding genes (PCGs) of B. similis exhibit the same genes present in other calanoid mitochondrial genes, such as C. hyperbolus [37] and E. affinis [38]. Unlike Penella and Paracyclopina species, B. similis does possess the ATP8 gene [39], indicating a genomic structure similar to other calanoid species. However, the presence of rRNA genes was not observed in the present study.…”

Section: Discussionmentioning

confidence: 99%

Complete Mitochondrial Genome Sequencing of the Calanoid Copepod Bestiolina similis (Sewell, 1914) from the Chennai Coast

Kandhasamy,

Nawaz,

Saboor

2023

Preprint

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Copepods are the most abundant metazoans on Earth, exhibit remarkable species diversity and global distribution. Accurate species identification of copepods presents a challenge due to their cryptic nature, necessitating meticulous examination and differentiation. To address this challenge, innovative approaches utilizing molecular markers have emerged, enabling more reliable and precise species identification. Mitochondrial genes, which are characterized by high variability, have proven invaluable in uncovering taxonomically significant variations among copepod species. In this study, we present the first complete mitochondrial genome analysis of the marine calanoid copepod Bestiolina similis (Sewell, 1914). Recent investigations employing whole mitochondrial genome-based phylogenetic analyses have generated considerable interest in exploring the deep branching patterns of arthropods. The complete mitochondrial genome of B. similis spans 23,704 base pairs and includes 13 protein-coding genes and 20 transfer RNA genes. The nucleotide composition of the mitochondrial genome is characterized by 43.42% adenine, 43.22% thymine, 6.48% guanine, and 6.88% cytosine. Maximum likelihood-based phylogenetic analysis of the mitochondrial genome were constructed of the available copepod species. Mitochondrial ge-nome-based phylogenies often reveal intriguing and distinctive topologies compared to traditional phylogenetic approaches. However, the sequencing of copepod mitochondrial genomes, particularly within the calanoid copepods remains limited. Therefore, this study aims to construct a phylogenetic tree based on the extracted mitochondrial genome, incorporating available data, to enhance our understanding of the evolutionary relationships among calanoid copepods.

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“…Yellowfin tuna (Thunnus albacares) belongs to the mackerel family and the tuna genus [30]. It is a highly migratory fish species in the ocean.…”

Section: Of 16mentioning

confidence: 99%

Effects of Acute High-Temperature Stress on Physical Responses of Yellowfin Tuna (Thunnus albacares)

Liu

et al. 2022

JMSE

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To understand the physiological reactions of juvenile yellowfin tuna (Thunnus albacares) under acute high-temperature stress, this study measured the changes in biochemical indexes of serum, liver, gill, and muscle of yellowfin tuna under acute high-temperature stress (HT, 34 °C) and a control group (28 °C) for 0 h and 6 h, 24 h and 48 h. The rising speed of water temperature in the HT group was 2 °C/h and the timing started when the temperature reached 34 °C. In the HT group, there was no significant difference between the four adjacent times in cortisol and lactic acid concentration. Serum triglyceride, cholesterol, and alkaline phosphatase concentration were significantly different from the four adjacent times. The superoxide dismutase (SOD) activity in the liver and gills increased at 6 h and 24 h, and the gills and liver had antioxidant reactions in a short time. The malondialdehyde (MDA) concentration in the gills changed significantly at 6 h, while that in the liver did not change significantly. The gills were more sensitive to temperature stress than the liver and muscle. Acute high-temperature stress affected yellowfin tuna’s antioxidant enzymes and metabolic indexes, resulting negative trend in physiological indexes, indicating that yellowfin tuna juveniles are susceptible to elevated temperature.

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The Complete Mitochondrial Genome of Pennella sp. Parasitizing Thunnus albacares

Cited by 5 publications

References 19 publications

Acute thermal stress increased enzyme activity and muscle energy distribution of yellowfin tuna

Acute thermal stress increased enzyme activity and muscle energy distribution of yellowfin tuna

Complete Mitochondrial Genome Sequencing of the Calanoid Copepod Bestiolina similis (Sewell, 1914) from the Chennai Coast

Effects of Acute High-Temperature Stress on Physical Responses of Yellowfin Tuna (Thunnus albacares)

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