Caranx Ignobilis Research Articles

Music Generation Using Dual Interactive Wasserstein Fourier Acquisitive Generative Adversarial Network

Music composition, an intricate blend of human creativity and emotion, presents substantial challenges when generating melodies from lyrics which hinders effective learning in neural networks and the inadequate depiction of harmonic structure that fails to encapsulate the complex relationships between lyrics and melodies. The existing methods often struggle to balance emotional depth and structural coherence, leading to compositions that lack both the intended emotional resonance and musical consistency. To overcome these issues, this research introduces a novel approach named Dual Interactive Wasserstein Fourier Acquisitive Generative Adversarial Network (DIWFA-GAN), which integrates innovative techniques like swish activation functions and the Giant Trevally Optimizer (GTO) for parameter optimization. Meanwhile, the GTO, inspired by the movement patterns of the Giant Trevally fish, provides efficient and effective parameter optimization, improving the model’s convergence speed and accuracy. Comparative analysis against recent existing models reveals superior performance for both the LMD-full MIDI and Reddit MIDI datasets, with impressive metrics including inception scores of 9.36 and 2.98, Fréchet inception distances of 35.29 and 135.54 and accuracies of 99.98% and 99.95%, respectively. The DIWFA-GAN significantly outperforms existing models in generating high-fidelity melodies, as evidenced by superior inception scores, Fréchet inception distances, and accuracies on both datasets.

Application of a support vector regression model employing meta-heuristic algorithms for estimating pile bearing capacity

ABSTRACT The design of pile foundations hinges significantly on the pile-bearing capacity (PBC), a crucial factor affected by numerous soil features and parameters. Piles serve as a key component in relocating structural loads to the ground, underscoring the need for accurately determining PBC in geotechnical design. While prior research has delved into utilizing artificial neural networks (ANN) for predicting PBC, they encounter shortcomings such as grappling with finding global minima and slow convergence rates. This study introduces Support Vector Regression (SVR) as a machine-learning approach, augmented by two meta-heuristic optimization techniques: the Giant Trevally Optimizer (GTO) and Smell Agent Optimization (SAO), to achieve optimal results. These techniques empower engineers and data scientists to develop more precise and reliable predictive models in geotechnical engineering, ultimately enhancing the safety and efficiency of foundation design and construction. Drawing upon an extensive dataset compiled from previous studies, a predictive model was constructed to estimate PBC using soft computing techniques. The outcomes overwhelmingly favored the SVGT model, a fusion of the SVR model with GTO, demonstrating excellent anticipative capacities with an outstanding R2 value of 0.998 and an impressively low RMSE value of 91.21.

Larval Rearing of the Giant Trevally, Caranx ignobilis (Forsskål, 1775), Fed Live Food Combinations of Rotifers, Copepods and Artemia salina

The giant trevally, Caranx ignobilis, is a high value fish which has been studied for spawning in captivity and domestication in the Philippines in view of its aquaculture potential. Initial larval rearing of the species encountered mortality issues, and this study attempts to address the problem to improve their survival. Hatchery-bred C. ignobilis larvae were reared for 40 days in nine units of 100 L conical fiberglass tanks at a stocking density of 500 larvae.tank-1 under three feed treatments with different combinations of rotifers (Brachionus plicatilis), brine shrimp (Artemia) and copepods (Pseudodiaptomus spp.): T1- Brachionus plicatilis + Artemia, T2- Brachionus plicatilis + Pseudodiaptomus spp., and T3-Brachionus plicatilis + Pseudodiaptomus spp. + Artemia fed at 0800 h and 1600 h. The results showed that the inclusion of copepods in the feeding regimen had positive effects on survival. Survival rate was significantly higher (P < 0.05) in T2 (23.47 ± 3.18 %) than T1 (11.67 ± 1.90 %) but was not statistically different from T3 (14.37 ± 3.88 %). Length increment was significantly different (P < 0.05) among treatments but with no statistical difference in specific growth rate (P > 0.05). The erratic swimming behaviour leading to mortality associated with insufficient levels of highly unsaturated fatty acids in Artemia was not observed in T2, thus, validating the assumption that the feeding with copepods will increase survival during larval rearing. The use of copepods for C. ignobilis larviculture is seen to play an important role in the success of the seed production protocol for this species. However, a sustainable supply of copepods through appropriate mass propagation techniques must be ensured to achieve higher production of C. ignobilis seeds in the hatcheries.

Tank color affects growth, feed utilization efficiency, coloration, and biochemical composition of juvenile giant trevally (Caranx ignobilis Forsskål, 1775)

Tank color affects growth, feed utilization efficiency, coloration, and biochemical composition of juvenile giant trevally (Caranx ignobilis Forsskål, 1775)

Mesh and Hook Selectivity of Larger Carangid Caranx ignobilis (Forsskal, 1775), Captured along the Kanyakumari Coast of India

Mesh and Hook Selectivity of Larger Carangid Caranx ignobilis (Forsskal, 1775), Captured along the Kanyakumari Coast of India

The first report of DNA barcoding of commercially important fish in Nias Islands, Indonesia

Abstract. Ramadhaniaty M, Manurung VR, Khairunnisa, Lubis F, Susetya IE. 2024. The first report of DNA barcoding of commercially important fish in Nias Islands, Indonesia. Biodiversitas 25: 742-753. The Nias Islands are an archipelago in the western part of North Sumatera, encompassed by the Indian Ocean, and have become a hotspot for demersal and pelagic fishes. These geographical conditions endow the waters around Nias with large fishery resources, leading to their frequent utilization as fishing grounds for Sumatera Island and its surrounding areas. This research aimed to identify the commercially important fish species with the highest catch frequency in the waters of Nias, and this identification marked the initial stage of the sustainable utilization of fish resources. The method used was DNA Barcoding using genes targeting the COI Mitochondrial locus. Therefore, 43 samples were collected from several North and South Nias fish landing sites. The obtained species were classified into 3 groups based on the commodity type: demersal fish, pelagic fish, and Choncricthyes. There were 8 species of demersal fish (Caesio caerulaurea, Halichoeres scapularis, Lethrinus ornatus, Mulloidichthys flavolineatus, Parupeneus barberinus, Scarus prasiognathos, Plectropomus leopardus, and Variola albimarginata), displaying genetic distances ranging from 0.002-0.275. Pelagic fish consisted of 5 species, namely Amblygaster clupoides, Caranx ignobilis, Caranx sexfasciatus, Ferdauia ferdau, and Scomberomorus commerson, displaying genetic distances ranging from 0.002-0.267. The next commodities were Chondrichthyes with 9 species (Carcharhinus sealei, Himantura leoparda, Neotrygon kuhlii, Paragaleus randalli, Pateobatis jenkinsii, Rhynchobatus cf laevis, Spyrna lewini, Taeniura meyeni, and Urogymnus granulatus), displaying genetic distance ranging from 0-0.271. This value indicates that migratory species such as chondrichthyes have quite extensive movements so that the genetic distance between species and between populations tends to be low.

Development and Characterization of 12 Microsatellite Markers for an Economically Important Fish, Caranx ignobilis, in the Philippines

The giant trevally (Caranx ignobilis) is an important food fish that faces increasing demand due to human population growth, necessitating genetic monitoring. This study intends to spearhead the development of microsatellite markers to assess the genetic variation of C. ignobilis populations. A total of 150 C. ignobilis specimens from six localities in the Philippines were analyzed. Based on next-generation sequencing data, 12 primer pairs were developed with high amplification rates and polymorphism across different loci. This study introduces the first microsatellite markers exclusively for C. ignobilis, which can be used for monitoring and management purposes.

Longshore movements and site fidelity of the iconic giant trevally Caranx ignobilis from southern Africa, determined using passive acoustic telemetry

Giant trevally Caranx ignobilis are iconic, apex marine predators globally distributed in tropical to subtropical regions, where they are of high importance to ecosystems and fisheries. During summer, adults aggregate for spawning, making them vulnerable to overfishing. The world’s largest C. ignobilis aggregation has been recorded in southern Mozambique, but the year-round movements of these fish required further investigation. To assess movement patterns of C. ignobilis along the southern African coast, 36 adult fish were acoustically tagged and monitored along the east coast between Santa Maria in southern Mozambique and Port St Johns in the Eastern Cape, South Africa, for over 5 yr using an extensive passive acoustic receiver array. All acoustically tagged C. ignobilis were recorded in southern Mozambique between November and January each year (with minor exceptions), moving distances up to a maximum of 632 km in one direction. These movements were fast and direct, with maximum travelling speeds of up to 130 km d-1. When not migrating, South African-based fish showed consistent inter-annual fidelity to individual linear areas of space use equivalent to home ranges. Although the coastal length of these areas varied considerably between individuals, even the mean length (92 km) was greater than any previously recorded C. ignobilis home range, globally. Findings from this study, including the value of no-take marine protected areas, are of global ecological interest and have implications for local fisheries management. Protecting these vulnerable aggregations is of the utmost importance for the future of this species in southern African waters and elsewhere.

Optimal Scheduling of Renewable Sources Based Micro grid with PV and Battery Storage Using Giant Trevally Optimizer

Optimal Scheduling of Renewable Sources Based Micro grid with PV and Battery Storage Using Giant Trevally Optimizer

Effects of dietary hydrolysate supplementation on growth, body composition, hematological responses, and liver histology of juvenile giant trevally (Caranx ignobilis Forsskal, 1775).

A feeding study was conducted to investigate how fish protein hydrolysate (FPH) supplementation affected the growth, feed utilization, body composition, and hematology of juvenile giant trevally (Caranx ignobilis Forsskal, 1775). Seven isonitrogenous (52% protein) and isocaloric diets (10% lipid) were formulated, wherein shrimp hydrolysate (SH) and tuna hydrolysate (TH) were used to replace fishmeal at inclusion levels of 0 (control), 30, 60, and 90 g/kg and labeled as control, SH30, SH60, SH90, TH30, TH60, and TH90, respectively. Each diet was fed to triplicate groups of juvenile giant trevally for 8 weeks. The results showed higher final body weight and specific growth rate in fish fed SH30, SH60, TH30, and TH60 than fed control diet. No difference was observed in feed intake, but reduced feed conversion ratio (FCR) was found in fish fed SH30, SH60, TH30, and TH60, demonstrating these diets improved feed utilization. TH90 caused deposition of lipid droplet in the hepatocyte, a sign of liver damage. Total monounsaturated fatty acids, polyunsaturated fatty acids (PUFA), and highly unsaturated fatty acids in fish were not affected by FPH supplementation. Fish fed TH30 showed lower ∑n - 3 PUFA than the fish fed remaining dietary treatments. The elevated serum protein was seen in fish fed control, SH30, SH60, and TH30, demonstrating that these diets were beneficial for the innate immune response in giant trevally. The results indicate that TH and SH could be incorporated into diets of giant trevally at 30-60 g/kg, replacing 7%-13% fishmeal with enhanced growth and health benefits.

Working with community fishers to determine the spawning seasonality of two commonly targeted jack species

AbstractObjectiveTo determine the spawning seasonality of two highly targeted jacks (Carangidae; Giant Trevally [known in Hawai’i as ulua aukea] Caranx ignobilis and Bluefin Trevally [known in Hawai’i as ‘ōmilu] Caranx melampygus) within Hawai’i through a collaborative effort with local fishers.MethodsBy working with volunteer fishers, we collected gonad samples for Giant and Bluefin trevally throughout a 15‐month period on four of the main Hawaiian Islands. Spawning seasonality was assessed using histological gonad samples as well as mean monthly gonadosomatic index (GSI).ResultFishery involvement proved successful in collecting biological samples needed to understand the spawning seasonality of these species. Participants were able to macroscopically identify when females were spawning versus undeveloped following initial instruction from the researchers. Mature female GSI resulted in similar conclusions as histological analyses. Both species had a spawning season between February and September, with peak spawning occurring from May to July. During the spawning months, a semilunar spawning pattern was observed for Giant Trevally with peak GSI occurring shortly before the full moon. Bluefin Trevally had higher variability, with no distinct lunar periodicity.ConclusionTraining fishers to be a part of the scientific process and collect gonad samples created trust in science and interest in learning more about the biology of their catch. By consistently sharing our progress and results through social media we were able to engage and build trust with the greater fishing community.

Description and development of Auerbachia ignobili n. sp. (Cnidaria: Myxosporea: Bivalvulida) from the giant trevally, Caranx ignobilis (Forsskål, 1775) from Indian waters.

The present study describes a new species of myxosporean, Auerbachia ignobili n. sp., infecting the hepatic bile ducts of Caranx ignobilis (Forsskål, 1775). Myxospores are club-shaped with a broad anterior region and a narrow, slightly curved and blunt caudal extension, measuring 17.4 ± 1.5 μm in length and 7.5 ± 7.4 μm in width. Shell valves asymmetrical, with a faint suture line, and enclosed a single, elongate-elliptical polar capsule with a ribbon-like polar filament, arranged in 5-6 coils. Developmental stages included early and late presporogonic stages, pansporoblast, and sporogonic stages with monosporic and disporic plasmodia. A. ignobili n. sp. differs from the other described species of Auerbachia in the shape and dimensions of the myxospores and polar capsules. The molecular analysis generated ~1400 bp long SSU rDNA sequences and the present species exhibited a maximum similarity 94.04-94.91% with A. chakravartyi. Genetic distance analysis indicated the lowest interspecies divergence of 4.4% with A. chakravartyi. In phylogenetic analysis, A. ignobili n. sp. was positioned independently with a high bootstrap value (1/100) and appeared as sister to A. maamouni and A. chakravartyi. Fluorescent in situ hybridization and histology indicates that the parasite develops within the hepatic bile ducts. Histological studies did not reveal any pathological changes. Considering the morphological, morphometric, molecular, and phylogenetic differences coupled with the differences in host and geographic locations, the present myxosporean is treated as a new species and named A. ignobili n. sp.

Giant Trevally Optimization Approach for Probabilistic Optimal Power Flow of Power Systems Including Renewable Energy Systems Uncertainty

In this study, the Giant Trevally Optimizer (GTO) is employed to solve the probabilistic optimum power flow (P-OPF) issue, considering Renewable Energy Source (RES) uncertainties, achieving notable cost reduction. The objective function is established to minimize the overall generation cost, including the RES cost, which significantly surpassing existing solutions. The uncertain nature of the RES is represented through the employment of a Monte Carlo Simulation (MCS), strengthened by the K-means Clustering approach and the Elbow technique. Various cases are investigated, including various combinations of PV systems, WE systems, and both fixed and fluctuating loads. The study demonstrates that while considering the costs of solar, wind, or both might slightly increase the total generation cost, the cumulative generation cost remains significantly less than the scenario that does not consider the cost of RESs. The superior outcomes presented in this research underline the importance of considering RES costs, providing a more accurate representation of real-world system dynamics and enabling more effective decision making.

An Efficient Hybrid Approach for Optimal Integration of Capacitors in Radial Distribution Networks with Realistic Load Models Using Giant Trevally Optimizer and Voltage Stability Index

An Efficient Hybrid Approach for Optimal Integration of Capacitors in Radial Distribution Networks with Realistic Load Models Using Giant Trevally Optimizer and Voltage Stability Index

Can shrimp hydrolysate improve the efficacy of meat and bone meal diet in juvenile giant trevally Caranx ignobilis?

A six-treatment study in a 3 × 2 factorial design was conducted to investigate whether dietary supplementation of shrimp hydrolysate (SH) improves the efficacy of meat and bone meal (MBM) replacing fishmeal protein in juvenile giant trevally Caranx ignobilis. A fishmeal-based diet (MBM0) was used as a control; two low fishmeal diets were prepared by replacing 25% (MBM25) and 50% (MBM50) of fishmeal protein with MBM; and another three treatments by supplementing MBM0, MBM25, and MBM50 with 45-g/kg SH supplementation (MBM0SH, MBM25SH, MBM50SH) were produced. The results showed that fish fed MBM25 and MBM50 caused lower growth and feed utilization than MBM0, whereas no differences were observed among fish fed MBM25SH, MBM50SH, and MBM0. Increasing dietary MBM levels resulted in decreased lipids in fish muscles and increased ash contents, while SH supplementation improved the muscle lipid levels. Substituting fishmeal with MBM increased monounsaturated fatty acids (MUFA) and decreased polyunsaturated fatty acids (PUFA), n-3 polyunsaturated fatty acid (n-3 PUFA), n-3 highly unsaturated fatty acids (n-3 HUFA), and n-3/n-6 HUFA, whereas SH supplementation enhanced n-3 PUFA, n-3 HUFA, and n-3/n-6 HUFA. The goblet cell density in the intestine increased in fish fed diets supplemented with SH. The study suggested that dietary supplementation of 45-g/kg SH increased the efficacy of substituting MBM protein for 50% of fishmeal protein without compromising the growth of juvenile giant trevally.

Mercury accumulation and biomarkers of exposure in two popular recreational fishes in Hawaiian waters

Mercury (Hg) exposure has not been examined in many recreational nearshore fish species that are commonly consumed around the Hawaiian Islands. Specific gene transcripts, such as metallothionein (MET) and thioredoxin reductase (TrxR), can be used to examine Hg exposure responses in aquatic organisms. This study measured total mercury (THg) in four species from two groups of Hawaiian nearshore fishes: giant trevally (Caranx ignobilis, n = 13), bluefin trevally (C. melampygus, n = 4), sharp jaw bonefish (Albula virgata, n = 2), and round jaw bonefish (A. glossodonta, n = 19). Total Hg accumulation and abundance profiles of MET and TrxR were evaluated for muscle, liver, and kidney tissues. Total Hg in round jaw bonefish and giant trevally tissues accumulated with length and calculated age. In round jaw bonefish tissues, mean THg was greater in kidney (1156 ng/g wet mass (wm)) than liver (339 ng/g wm) and muscle (330 ng/g wm). Giant trevally muscle (187 ng/g wm) and liver (277 ng/g wm) mean THg did not differ significantly. Fish species in this study were compared to commercial and local fish species with state and federal muscle tissue consumption advisories based on THg benchmarks developed by the U.S. Food and Drug Administration (FDA) and Environmental Protection Agency (EPA). Both bonefishes had mean muscle THg that exceeded benchmarks suggesting consumption advisories should be considered. MET transcript in round jaw bonefish kidney tissue and kidney THg exhibited a marginally significant positive correlation, while TrxR transcript in liver tissue negatively correlated with increasing liver THg. These results contribute to our understanding of Hg exposure associated health effects in fish.

Studi distribusi tertangkapnya ikan pada Soma Tono selama satu siklus bulan

This study aims to determine the distribution of caught fish in "soma tono" and the types of fish caught and how the fish are caught. Soma Tono is classified in gillnets that are rectangular in shape and equipped with buoys, upper ropes, lower ropes, weights and sign buoys. Operation of soma tono fishing gear consists of preparation, net lowering (setting), soaking (soaking) and lifting the net (hauling). The principle of soma tono fishing gear (gillnet) is to wait for fish to be entangled in the body of the net. The method used is a descriptive method, namely managing data obtained when making observations, interviews and documentation. The dominance of fish obtained by bounced fish, the type of fish obtained is the dominance of demersal fish or bottom fish, namely jackfruit seed fish (Upeneus molluccensin), lencam fish (Letrinus lencan), snapper fish (Lutjanus campechanus), lolosi fish (Caesio chrysozona), kuwe fish (Caranx ignobilis), grouper (Epinephelus longispinis), curisi fish (Nemipterus nemaptohorus), sako fish (Tylosurus crocodilus), parrotfish (Scarus rivulatus Valenciennes), puffer fish (Tetraodontidae), sardines (Amblygaster sirm), baronang fish (Siganus) and sea eels (Muraenidae). The results obtained four phases of the moon, namely the 1st quarter moon phase (101.5 kg), the new moon phase (168.7 kg), 2nd quarter moon phase (89 kg) and the full moon phase (63kg).

Food shortage and the effect on growth, condition factor and fitness of Trevally (Caranx ignobilis) under rearing condition

Caranx ignobilis, is one of the iconic culture species in Ambon inner bay recently, unfortunately feeding remains problematic, yet is of profound importance. This study is aimed to examine the effect of feeding and unfed period cycles on growth trajectories and the well being during treatment. In totall, 259 fish ranging in size of 17.05cm-20.47cm SL and weight between 142.00 gr - 221.25 gr were subjected to receive three different feeding regimes. All fish were kept in 3x3x3m pollyethylene net cages receiving 1 day unfed and 1 day re-feeding (1F1RF), 2 days unfed and 2 days re-feeding (2F2RF), 3 days unfed and 3 days re-feeding (3F3RF) were compared to the fish feed daily as control group. Low value fish of shortfin scad, Decapterus macrosoma, were given twice per day at 0900hrs-1000hrs am and 1600hrs-1700hrs pm as much as 15% of total biomass. Standard length and weigth were recorded once per two weeks for 5 months. Analysis of mean length at harvest time showed no significant differences (Fα 0.05 : 1.6297 <Fcritical , 0,05 (1), 3,36 = 2,866. Weight gain however, exhibited significant differences (F, α 0.05 = 3,239 >Fcritical = 2,866). Tukey test among treatments and control revealed significant differences, q value range from 8,23-14,29>qcritical0,05, 36, 4 = 3,845. No significant difference, however among treatments; q = 3,2<q 0,05,36,4 = 3,845. The value of CC > 1 indicating growth compensation, while the RCF = 1.36 suggesting the same body condition with control group and remain in good fit.

Effect of Mesh Size and Hanging Ratio Gillnet to the Local Marketable Size of Giant Trevally Caranx ignobilis

Gillnets are widely used by small-scale fishermen to catch giant travelly Caranx ignobilis in coastal waters, the dominant fish caught are small in size not according to market size. The parameters of gillnet such as mesh size and hanging ratio can optimize the target size. The purpose of this study was to analyze the effect of mesh size and hanging ratio of gillnets on the size of the local marketable size for C ignobilis. The fishing experiment was carried out in floating net cages at the Ambon Fisheries Training and Extension Center (BPPP) from June to August 2022. A Simple randomized experimental designed with a factorial pattern was used as the experimental model. The different mesh size were used as treatments, and they are 2.5, 3.0 and 3.5 inches (3 factors) and the hanging ratio consisted of 70%, 50% and 30% (3 factors). The population of C ignobilis that was used in this study with the middle of the class ranged from 24.5 to 29.5 cm total length. There is an effect of mesh size factor on the size of the target market for C ignobilis, where the mesh size of 3.0 inches is more effective than the others. In addition, the hanging ratio value affects the catch size of the local target market, where the hanging ratio value of 30% is more effective than the hanging ratio value of 70%. .

Movement patterns and habitat use of adult giant trevally (Caranx ignobilis) in the South China Sea

Movement patterns and habitat use of adult giant trevally (Caranx ignobilis) in the South China Sea