The indiscriminate use of deltamethrin in agriculture and aquaculture can lead to residues increased many regions, which poses negative impacts on intestinal health aquatic organisms. Although the potential toxicity have recently attracted attention, comprehensive studies injuries after chronic exposure remain poorly understood. Herein, a 28-day test, crucian carp expose different concentrations (0, 0.3, 0.6 μg/L) were used as research object. We found that morphology changes goblet cells...

To investigate whether Mandarin fish developed oxidative stress after being domesticated with artificial feed, we conducted a series of experiments. Oxidative is an important factor leading to diseases and aging in the body. The liver integrates functions such as digestion, metabolism, detoxification, coagulation, immune regulation, while gills are respiratory organs that sensitive changes water environment. Therefore, used research materials. aim this study was effects short-term feed...

More and more evidences proved that deltamethrin (Del) exposure induced adverse effects damaged immune function to the aquatic animals in parasite killing process with increasing insecticide application. However, little is currently known of negative effect on mucosal immunity, especially gills tissue. Therefore, this study was aimed reveal tissue injury immunotoxicity gill gibel carp following acute exposure. The LC50 at 96 h determined be 6.194 μg/L, then juvenile (Carassius auratus...

Abstract Background Classification of the Acanthocephala, a clade obligate endoparasites, remains unresolved because insufficiently strong resolution morphological characters and scarcity molecular data with sufficient resolution. Mitochondrial genomes may be suitable candidate, but they are available for small number species their suitability task has not been tested thoroughly. Methods Herein, we sequenced first mitogenome large family Rhadinorhynchidae: Micracanthorhynchina dakusuiensis ....

Abstract Background Acanthocephala is a clade of obligate endoparasites whose mitochondrial genomes (mitogenomes) and evolution remain relatively poorly understood. Previous studies reported that atp8 lacking from acanthocephalan mitogenomes, tRNA genes often have nonstandard structures. Heterosentis pseudobagri (Arhythmacanthidae) an fish endoparasite for which no molecular data are currently available, biological information unavailable in the English language. Furthermore, there...

The mitogenome of Brentisentisyangtzensis is 13,864 bp in length and has the circular structure typical metazoans. It contains 36 genes: 22 transfer RNA genes (tRNAs), two ribosomal (rRNAs) 12 protein-encoding (PCGs). All are transcribed from same strand. Thirteen overlapping regions were found mitochondrial genome. overall A+T content B.yangtzensis 68.3% versus 31.7% G+C (A = 27.8%, T 40.5%, C 9.0%, G 22.7%). B.yangtzenensis (Illiosentidae) Leptorhynchoidesthecatus (Rhadinorhynchidae) form...

Current treatment strategies for parasitic infectious diseases in crucian carp primarily rely on chemotherapy. As a commonly used antiparasitic agent, deltamethrin (DEL) may have the potential adverse effects external mucosa of fish such as gills. In this study, 180 healthy juvenile (Carassius auratus) (average weight: 8.8 ± 1.0 g) were randomly divided into three groups 28 days, which immersed 0 μg/L, 0.3 and 0.6 μg/L DEL, respectively. The results histological analysis revealed that severe...

Niclosamide (NIC) is a potent salicylanilide molluscicide/helminthicide commonly utilized for parasite and mollusc control in aquatic environments. Due to its persistent presence water bodies, there growing concern regarding impact on organisms, yet this remains inadequately elucidated. Consequently, study aims assess the hepatotoxic effects detoxification capacity of black carp (

Leptin, a secretory protein encoded by obese genes, plays an important role in regulating feeding and energy metabolism fish. To study the structure function of Leptin gene yellow cheek carp (Elopichthys bambusa), full-length cDNA sequence leptin was cloned, named EbLep. The Eblep 1140 bp, length open reading frame (ORF), which can encode 174 amino acids, 525 bp. signal peptide predicted to contain 33 acids. Sequence alignment showed that acid conserved cyprinid Despite large differences...

To clarify the allometric growth pattern and hunger tolerance of Hemibarbus maculatus Bleeker larvae, morphological lengths their functional organs were measured continuously primary feeding rates under a state starvation studied. A control group set up for this study, 10 larvae sampled from each every day in order to study tolerance. The results indicated that opened mouths at 4 days after hatching, yolk sac disappeared completely 11 hatching. preferentially developed heads, fins, eyes,...

Fish gut health is influenced by various factors, with the environment being a significant one.

Azygia hwangtsiyui (Trematoda, Azygiidae), a neglected parasite of predatory fishes, is little-known in terms its molecular epidemiology, population ecology and phylogenetic study. In the present study, complete mitochondrial genome A. was sequenced characterized: it 13,973 bp circular DNA molecule encodes 36 genes (12 protein-coding genes, 22 transfer RNA two ribosomal genes) as well non-coding regions. The A+T content mitogenome 59.6% displays remarkable bias nucleotide composition with...

Abstract Deltamethrin (Del), a widely administered pyrethroid insecticide, has been established as common contaminant of the freshwater environment and detected in many ecosystems. In this study, we investigated changes brain transcriptome metabolome crucian carp after exposure to 0.6 μg/L Del for 28 days. Elevated MDA levels inhibition SOD activity indicate damage antioxidant system. Moreover, total 70 differential metabolites (DMs) were identified using liquid chromatography‐mass...

Niclosamide (NIC, 2′,5-dichloro-4′-nitrosalicylanilide) is a salicylanilide molluscicide, and the extensive utilization environmental pollution associated with NIC engender potential hazard to both human health wellbeing of aquatic organisms. However, mechanism chronic toxicity at environmentally relevant concentrations in terms oxidative stress, metabolic disorder, barrier functions black carp (Mylopharyngodon piceus) unknown. Therefore, healthy juvenile (M. (average weight: 38.2 ± 2.5 g)...

The maintenance of appropriate endoplasmic reticulum (ER) homeostasis is critical to effective spinal cord injury (SCI) repair. In previous reports, protein disulfide isomerase A6 (PDIA6) demonstrated serve as a reversible functional modulator ER stress responses, while spastin can coordinate organization through the modulation dynamic microtubule network surrounding this organelle. While both PDIA6 and are thus important regulators ER, whether they interact with one another for SCI repair...

Calmodulin (Calm), a crucial Ca2+ sensor, plays an important role in calcium-dependent signal transduction cascades. However, the expression and relevance of Calm stress immune response have not been characterized Megalobrama amblycephala. In this study, we identified full-length cDNA (termed MaCalm) blunt snout bream M. amblycephala, analyzed MaCalm patterns to cadmium Aeromonas hydrophila challenges. was 1603 bp long, including 5′-terminal untranslated region (UTR) 97 bp, 3′-terminal UTR...

Niclosamide (NIC) is a commonly used insecticide and molluscicide in the prevention treatment of parasitic diseases fish. The utilization NIC has potential to disrupt microbial community present on mucosal tissue fish, leading localized inflammatory responses. objective this study was evaluate impact immune system bacterial populations within gill gut Mylopharyngodon piceus. Fish were subjected varying concentrations NIC, including control group (0 μg/L), low (15% 96 h LC50, LNG, 9.8 high...

Anthropogenic and extreme climate disasters cause ecological changes in natural rivers lakes, increasing the risk of starvation yellowcheek (Elopichthys bambusa). Therefore, impact on metabolism wild population should be explored. In this study, we used transcriptome sequencing technology to analyze effects short (8 d) long-term (28 liver transcriptome, growth, serum indicators yellowcheek. Our results showed that short-term significantly reduced visceral weight viscera index Long-term body...