Aquaculture International最新文献

{"title":"Role model of environmental governance to support the development of high-tech whiteleg shrimp ponds (Litopenaeus vannamei)","authors":"Mudian Paena,&nbsp;Akhmad Mustafa,&nbsp; Tarunamulia,&nbsp;Imam Taukhid,&nbsp;Erna Ratnawati,&nbsp;Ruzkia Asaf,&nbsp;Admi Athirah,&nbsp; Kamariah,&nbsp; Akmal,&nbsp;Mohammad Syaichudin,&nbsp; Hamzah","doi":"10.1007/s10499-024-01730-x","DOIUrl":"10.1007/s10499-024-01730-x","url":null,"abstract":"<div><p>High-tech whiteleg shrimp ponds (<i>Litopenaeus vannamei</i>) (intensive and superintensive) are rapidly developing. The rapid development is due to the increasing demand for world shrimp, the mastered cultivation technology, and the vast potential of land in Indonesia. The Indonesian government has even made various regulations to support increased sustainable shrimp production. However, the regulation is still sectoral and cannot be implemented by all stakeholders and investors in aquaculture. In addition, investors have not practiced several stages of activities to ensure environmental safety and the success of shrimp farming. As a result, production targets have not been achieved, and the threat of high potential waste is wasted on the aquatic environment. Therefore, a role model is needed to govern high-tech whiteleg shrimp pond development to ensure all shrimp production improvement system instruments can run well. Based on this, research has been conducted to create a role model for developing high-tech whiteleg shrimp ponds (<i>Litopenaeus vannamei</i>). The research used survey methods and <i>group discussion</i> forums (FGDs). The results showed that there are four main components that must exist and synergize in the role model of governance for the development of high-tech whiteleg shrimp ponds: land carrying capacity, cultivation facilities, pond management, and government regulations.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects and economic viability of earthworm meal (Eisenia andrei) and zeolite in diets for Nile tilapia (Oreochromis niloticus) fingerlings","authors":"Alex Steven Valencia Ortiz,&nbsp;Guilherme Melgaço Heluy,&nbsp;Maria do Carmo Mohaupt Marques Ludke,&nbsp;Luis Otávio Brito,&nbsp;Juliana Ferreira dos Santos,&nbsp;Carlos Bôa-Viagem Rabello,&nbsp;Jorge Vitor Ludke,&nbsp;Adrielle Carneiro de Araújo Santos,&nbsp;Elton Francisco de Oliveira,&nbsp;José Anderson Gomes da Silva,&nbsp;Arlei Coldebella","doi":"10.1007/s10499-024-01676-0","DOIUrl":"10.1007/s10499-024-01676-0","url":null,"abstract":"<div><p>This study evaluated inclusion levels (0, 3.5, 7, and 10.5%) of earthworm meal (<i>Eisenia andrei</i>) in diets for GIFT Nile tilapia (<i>Oreochromis niloticus</i>) fingerlings with and without 2% zeolite. The experiment used a 4 × 2 factorial design with three replicates, involving 24 tanks, each stocked with seven fish (2.672 ± 0.22 g). Water quality parameters, growth performance, proximate composition of fish carcass and biometric indices were analyzed, along with an economic assessment. Results showed that zeolite significantly reduced nitrogenous compounds and coliforms in water (<i>P</i> &lt; 0.05). Earthworm meal did not affect water quality (<i>P</i> &gt; 0.05). However, 7% and 10.5% inclusion of earthworm meal significantly improved growth performance (<i>P</i> &lt; 0.05), including final body weight, weight gain, feed conversion ratio, feed efficiency, specific growth rate, protein efficiency ratio, and condition factor. Zeolite did not affect growth performance (<i>P</i> &gt; 0.05). Proximate composition and biometric indices were not significantly impacted by either product (<i>P</i> &gt; 0.05), except for lower carcass ether extract with zeolite and higher protein and energy retention coefficient with 7% and 10% earthworm meal (<i>P</i> &lt; 0.05). Economically, diets with earthworm meal were more expensive (USD 25.05/kg), but the viable price was determined to be USD 1.27/kg, without negatively affecting economic indices. Zeolite did not significantly impact other economic parameters (<i>P</i> &gt; 0.05). In conclusion, earthworm meals can be added to Nile tilapia diets at 7% to 10.5% to enhance growth performance, with 7% recommended for cost considerations. Zeolite at 2% can improve water quality without affecting production costs.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Porphyra yezoensis polysaccharide on antioxidant and liver health of spotted sea bass, Lateolabrax maculatus","authors":"Hao Lin,&nbsp;Sishun Zhou,&nbsp;Jianrong Ma,&nbsp;Lumin Kong,&nbsp;Zhangfan Huang,&nbsp;Yi Lin,&nbsp;Longhui Liu,&nbsp;Yanbo Zhao,&nbsp;Zhongbao Li","doi":"10.1007/s10499-024-01740-9","DOIUrl":"10.1007/s10499-024-01740-9","url":null,"abstract":"<div><p>This study investigated the effects of <i>Porphyra yezoensis</i> polysaccharide (PP) on the antioxidant and liver health of spotted sea bass (<i>Lateolabrax maculatus</i>). A total of 360 spotted sea bass (10.53 ± 0.02 g) were divided into 6 groups on average, and the diets of these groups were supplemented with 0, 3, 6, 9, 12, and 15 g/kg PP (control group: K, PP1, PP2, PP3, PP4, and PP5), respectively. The experiment lasted for 52 days. The results showed that, compared with the control group, the serum glutathione (GSH) content was significantly increased and the malondialdehyde (MDA) content was significantly decreased in the PP1 group. The serum catalase (CAT) activity was significantly increased in the PP1, PP2, PP3, and PP4 groups. Additionally, the superoxide dismutase (SOD) activity was significantly increased in the PP2 and PP3 groups. In terms of liver antioxidant indexes, GSH and MDA content were not significantly different among all groups. CAT activity in the PP2 and PP3 groups was significantly higher than that in the control group, and SOD activity in the PP4 groups was significantly higher than that in the control group. The activity of amylase (AMS) and trypsin (TRS) was significantly increased in the PP1, PP2, PP3, and PP4 groups compared to the control group. Additionally, the activity of lipase (LPS) was significantly increased in the PP5 group compared to the control group. Liver injury indexes showed that serum GOT and GPT activities in the PP3 group were significantly lower than those in the control group. There was no significant difference in T-CHO and TG between the experimental group and the control group. Histological analysis showed that dietary PP improved liver cell morphology and reduced fat vacuoles. Liver transcriptome analysis of the control group and the PP4 group showed that the main change pathways were arachidonic acid metabolism, purine metabolism, and fatty acid degradation. In addition, PP regulates fibroblast growth factor 19 (FGF19), solute carrier family 3,expression of member 2 (SLC3A2), angiopoietin-like 8 (ANGPTL8), thrombospondin 1 (THBS1), tyrosinase (TYR), and kelch-like protein 19 (KEAP1) genes, making adjustments to liver health and function. In summary, PP increased the antioxidant capacity and improved the liver health of spotted sea bass.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First report of significant growth improvement of Totoaba macdonaldi using Bacillus and soy","authors":"Victor Mercado,&nbsp;Jorge Olmos,&nbsp;Lus M. López,&nbsp;Mario A. Galaviz","doi":"10.1007/s10499-024-01753-4","DOIUrl":"10.1007/s10499-024-01753-4","url":null,"abstract":"<div><p>Soybean product utilization in carnivorous fish feeding is limited due to the presence of antinutritional factors (ANFs), which can affect fish growth performance and health status. Probiotic bacteria are commonly used to improve feed utilization in animals unable to digest high levels of protein, carbohydrate, and complex lipids from plant origin. In this study, we evaluated <i>Bacillus</i> sp1, sp3, sp4, and 9b strain probiotic capacity in <i>Totoaba macdonaldi</i> juveniles fed with high levels of soy protein concentrate (SPC). In vitro assays showed that sp1 and sp3 strains were capable of degrading soybean products and other plant-based ingredients commonly used in diet formulation. Soybean meal semi-solid-state-fermentation (SSSF) showed glycinin and β-conglycinin allergenic proteins, and other antinutritional factors were degraded when sp1 and sp3 strains were added to the SSSF process. HPLC product characterization of soybean meal fermented samples with <i>Bacillus</i> strains showed hydrophilic peptide increment and hydrophobic proteins decrement. Diets containing 30% fishmeal substitution with SPC and <i>Bacillus</i> strains sp1, sp3, sp4, and 9b were formulated and used to feed <i>T. macdonaldi</i> juveniles for 8 weeks. Fish growth was carried out using commercial diet (Ct), experimental diet with SPC and without <i>Bacillus</i> (C30), and experimental diets with SPC and <i>Bacillus</i> strains (C30sp1, C30sp3, C30sp4, C309b). Results show that C30sp1 diet produced better weight gain (WG: 224.56 ± 10.79%) than C30sp3 (196.56 ± 11.38%), C30sp4 (177.08 ± 10.79%), and C309b (190.78 ± 13.22%) diets. C30sp1 also produced better weight gain than Ct commercial (123.08 ± 10.98%) and C30 experimental control (194.90 ± 12.33%) diets. Specific growth rate (SGR), thermal growth coefficient (TGC), feed conversion ratio (FCR), and daily feed intake (DFI) parameters were also improved when C30sp1 diet was used. In conclusion, the ability of the <i>Bacillus</i> sp1 strain to degrade soy protein makes it a great feed additive for <i>T. macdonaldi</i>, enhancing growth performance and resulting in larger fish compared to commercially available feeds.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanofiltration membrane performance in recirculating aquaculture systems: modeling permeate concentration with diverse pre-treatment configurations","authors":"Ahmad Rijani Hasby,&nbsp;Satyanto Krido Saptomo,&nbsp;Yuni Puji Hastuti,&nbsp;Ariani Dwi Astuti,&nbsp;Budi Indra Setiawan,&nbsp;Allen Kurniawan","doi":"10.1007/s10499-024-01691-1","DOIUrl":"10.1007/s10499-024-01691-1","url":null,"abstract":"<div><p>The nanofiltration (NF) membrane technology implemented in the recirculating aquaculture system (RAS) suffers from fouling issues, which cause a decrease in the flux value and performance of the NF membrane. Fouling can be reduced by incorporating pre-treatment units such as the multimedia filter unit (MMF) and activated carbon filter (CF). Therefore, this research aims to minimize fouling and maintain optimal membrane flux and performance by integrating pre-treatment units such as MMF and CF, as well as conducting detailed flux modeling. The models simulate transport phenomena within the NF membrane system, emphasizing the impact of concentration polarization and fouling on flux and overall performance across various pre-treatment configurations under non-steady state conditions. Configuration of MMF-CF-NF demonstrated the highest overall efficiency in reducing ammonia concentration by 97.5%, nitrite by 100%, and 100% by TSS. Furthermore, the values of the solvent transport coefficient (<i>A</i>_w), the solute transport coefficient (<i>B</i>_s), and the contaminant accumulation volume (<i>X</i>) varied for each configuration due to different treatments, leading to varying membrane workloads. Validation and statistical analysis of the permeate concentration model demonstrated that the developed model has a strong capability to accurately describe and predict the filtration process using the NF membrane, with solute transport coefficient contributing most significantly to influencing the concentration permeate NF.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature-induced changes in the hematological and biochemical parameters of Nile tilapia anesthetized with Ocimum basilicum","authors":"Paola Capistrano dos Santos,&nbsp;Emilly Monteiro Lopes,&nbsp;Arlene Sobrinho Ventura,&nbsp;Claudia Andrea Lima Cardoso,&nbsp;Alexandre Vaz da Silva,&nbsp;Domickson Silva Costa,&nbsp;Marília Tedesco,&nbsp;Gabriela Tomas Jerônimo,&nbsp;Maurício Laterça Martins","doi":"10.1007/s10499-024-01751-6","DOIUrl":"10.1007/s10499-024-01751-6","url":null,"abstract":"<p>The study aimed to evaluate the effect of temperatures of 23 and 27 °C on the hematology of Nile tilapia juveniles (<i>Oreochromis niloticus</i>) subjected to anesthesia using the essential oil of basil (<i>Ocimum basilicum</i>) at a concentration of 250 mg L⁻¹. A total of 112 fish were divided into 4 treatments and distributed as follows: fish anesthetized with 250 mg L⁻¹ at a temperature of 23 °C (<i>n</i> = 42); fish anesthetized with 250 mg L⁻¹ at a temperature of 27 °C (<i>n</i> = 42); and for each temperature, a control group fish exposed to diluent solution (95% ethanol) (<i>n</i> = 14, 7 per temperature); and a negative control group fish (water) (<i>n</i> = 14, 7 per temperature). They were exposed to 10 min for both temperatures. Blood collection was performed after the anesthetic induction at each temperature to determine the hematocrit, hemoglobin concentration (Hb), red blood cell count (RBC), mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC), mean corpuscular hemoglobin (MCH), relative values of leukocytes, and absolute values of leukocytes and thrombocytes, in addition to evaluating plasma chloride and total calcium ions. The analysis of chemical composition by gas chromatography coupled with mass spectrometry (GC–MS) demonstrated methyl-chavicol (70.04%) and linalool (24.59%) as the major components of basil essential oil. Fish anesthetized at a temperature of 23 °C showed lower neutrophil counts (<i>p</i> &lt; 0.05) compared to the other tested groups. For the temperature of 27 °C, values of MCV, MCHC, and RBC decreased (<i>p</i> &lt; 0.05) following exposure to basil essential oil. The calcium ion showed a statistical difference (<i>p</i> &lt; 0.05) between the treatments about the water control group. It is concluded that basil essential oil presented a positive anesthetic effect. The use of <i>O. basilicum</i> essential oil as an anesthetic in Nile tilapia was the best at 23 °C, causing less hematological and biochemical imbalance.\u0000</p>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of mangrove leaf litter on the water quality, growth, and survival of tiger shrimp (Penaeus monodon Fabricius, 1798) post-larvae","authors":"Gunarto Gunarto,&nbsp;Muliani Muliani,&nbsp;Hidayat S. Suwoyo,&nbsp;Early Septiningsih","doi":"10.1007/s10499-024-01715-w","DOIUrl":"10.1007/s10499-024-01715-w","url":null,"abstract":"<div><p>This research aims to determine the effects of mangrove (<i>Rhizophora mucronata</i> and <i>Avicennia alba</i>) leaf litter on the water quality, growth, and survival of tiger shrimp, <i>Penaeus monodon</i> post-larvae (PL-60). Three levels of mangrove leaf litter, 0.125 g/L LS, 0.25 g/L LS, 0.5 g/L LS; 0.125 g/L TD, 0.25 g/L TD, and 0.5 g/L TD, were placed directly (LS) and placed in separate aquariums (TD) during post-larvae rearing. The post-larvae-fed pellets constituted 20% of the total biomass, with two daily frequencies. Ammonia, nitrite, total organic matter (TOM), phosphate, <i>Vibrio</i>, and total bacteria in water and sediment, as well as chlorophyll-a, were monitored every 10 days during a 1-month study. The highest ammonia was detected in the 0.5 g/L LS <i>R. mucronata</i> and <i>A. alba</i> leaf litter, whereas nitrite was detected in the 0.5 g/L TD <i>R. mucronata</i> and 0.125 mg/L LS <i>A. alba</i> leaf litter. TOM concentration &gt; 25 mg/L in all the treatments. The highest phosphate coincided with the highest chlorophyll-a on day 20. The lowest total <i>Vibrio</i> in the water was found in the 0.5 g/L LS <i>R. mucronata</i> and <i>A. alba</i> leaf litter, whereas the sediment was found in the control treatment. The total bacteria in the sediment reached 10⁶ CFU/mL in the <i>R. mucronata</i> and <i>A. alba</i> leaf litter. A high tannin concentration was detected in the treatment where the mangrove leaf litter was directly placed, and it had a significant effect (<i>p</i> &lt; 0.05) on post-larvae growth, survival, and production. The lowest post-larvae growth was found in the 0.5 g/L TD <i>R. mucronata</i> treatment. The lowest survival rate for post-larvae was found in 0.5 LS <i>R. mucronata</i> treatment.\u0000</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of different feeding rates on the rearing of the curimba Prochilodus lineatus under biofloc conditions","authors":"Gleice Kelli Vieira,&nbsp;Jéssica Julian Fernandes Lima,&nbsp;Marilda Ribeiro Soares Davalo,&nbsp;Fúlvia Cristina Oliveira,&nbsp;Marco Shizuo Owatari,&nbsp;Jayme Aparecido Povh,&nbsp;Robson Andrade Rodrigues,&nbsp;Cristiane Meldau de Campos","doi":"10.1007/s10499-024-01749-0","DOIUrl":"10.1007/s10499-024-01749-0","url":null,"abstract":"&lt;div&gt;&lt;p&gt;This study evaluated the effects of different feeding rates on the rearing of the curimba &lt;i&gt;Prochilodus lineatus&lt;/i&gt; under biofloc (BFT) conditions. One hundred and sixty juvenile &lt;i&gt;P. lineatus&lt;/i&gt; with average weights and lengths of 27.33 ± 2.07 g and 13.52 ± 0.16 cm, respectively, were randomly distributed in 16 experimental units (80 L) under BFT conditions and subjected to four feeding rates: 1.0%, 3.0%, 5.0%, and 8.0% of the fish biomass, for 60 days. During the assay, water quality variables and the proximate composition of the biofloc were monitored, as well as the productive performance and hematology of fish were evaluated. Compared to fish that received the diet at a rate of 1.0% of the biomass, the final length (14.47 ± 0.43 cm), final weight (35.55 ± 3.21 g), and gain in length (1.21 ± 0.34 cm) were significantly higher than those that received 5% of the biomass, while the fish that received 5.0% and 8.0% of the biomass, weight gain, and specific growth rate were significantly higher than those that received 1.0% of the biomass. Final biomass (296.89 ± 18.30 g) was significantly greater in fish that received the diet at a rate of 8.0% of the biomass than those that received 1.0% of the biomass (198.30 ± 49.36 g). The feed conversion rate (1.74 ± 0.26) was significantly lower in fish that received the diet at a rate of 5.0% than those that received 1.0% and 3.0% of the biomass. The protein efficiency (− 10.35 ± 5.37%) decreased significantly in fish in the 1.0% of the biomass. The survival rate of fish was significantly lower in fish from the 5.0% of the biomass (66.32 ± 14.03%) than in fish that received 3.0% of the biomass (100.00 ± 0.00%). The concentration of dissolved oxygen was significantly higher in the culture water of fish that received 1.0% and 3.0% of the biomass. The amount of sedimentable solids in the water was significantly higher in the culture water of fish at 8.0% of the biomass (242.50 ± 181.18) than in the groups of 1.0% and 3.0% of the biomass, while the hardness significantly decreased in the culture water of fish that received a diet at a rate of 5.0% of the biomass. Carbon dioxide was significantly greater in the water of the 3.0% of the biomass than in the 5.0% of the biomass. Regarding the proximal composition of the bioflocs, the dry matter significantly increased in the groups that were fed with a feeding rate of 8.0% (28.58 ± 0.01%), while the lowest contents were observed in the groups that received a feeding rate of 3.0% of the biomass. Crude protein was significantly lower in the groups that received a feeding rate of 1.0% of the biomass (28.94 ± 0.01%) than in the groups of 3.0% of the biomass. Ether extract was significantly greater in the groups of 8.0% of the biomass (1.62 ± 0.00%) than in the 3.0% of the biomass. Monocytes were significantly increased in fish that received a diet at a rate of 1.0% of the biomass compared to fish from the 5.0% and 8.0% of the biomass. Neutrophils were sign","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PLCFishMOT: multiple fish fry tracking utilizing particle filtering and attention mechanism","authors":"Huachao Tan,&nbsp;Yuan Cheng,&nbsp;Dan Liu,&nbsp;Guihong Yuan,&nbsp;Yanbo Jiang,&nbsp;Hongyong Gao,&nbsp;Hai Bi","doi":"10.1007/s10499-024-01713-y","DOIUrl":"10.1007/s10499-024-01713-y","url":null,"abstract":"<div><p>The task of multi-object tracking of fish fry poses significant challenges, as the majority of the fish fry individuals exhibit highly similar appearances, and the feature distinctions between individual targets are not readily apparent. Consequently, fish tracking algorithms relying primarily on appearance-based features for data association often suffer from low accuracy and poor robustness. To address the challenges inherent in multi-object tracking of fish fry, this study presents an improved DeepSort-based algorithm, dubbed PLCFishMOT, designed specifically for enhanced performance in this domain. Furthermore, the fish fry trajectories may exhibit nonlinear characteristics due to external perturbations. To address this, the original Kalman filtering method has been replaced with a particle filtering approach, which is more suitable for handling nonlinear and non-Gaussian problems. This modification serves to enhance the accuracy of the trajectory prediction process. To further bolster the accuracy of the data association process, the proposed framework incorporates a large separable kernel attention mechanism into the original feature extraction network. This mechanism leverages convolutional kernels of varying sizes to extract target features with differing receptive field dimensions, thereby enhancing the overall effectiveness of the feature representation. The proposed approach effectively addresses the challenge of incorrect ID assignment, which can arise due to the close parallel swimming patterns exhibited by the fish fry. This is achieved by leveraging the cosine angle value between the fry detection frame and the trajectory frame as a discriminating factor. The experimental evaluation of the proposed algorithm on an open-source video dataset demonstrates its strong performance, with the algorithm achieving an IDF1 score of 75.8%, a MOTA score of 98.1%, and IDs is 10, respectively. Furthermore, to assess the generalization capabilities of the proposed approach, validation experiments were conducted using a fish fry video dataset captured in real-world aquaculture scenarios. The experimental results demonstrate that the PLCFishMOT algorithm achieves the best tracking performance compared to other advanced multi-object tracking algorithms.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Chlorella pyrenoidosa meal and Sinotaia quadrata viscera as diets on growth, digestive enzyme activities, antithrombin activity, and gut morphology of Whitmania pigra","authors":"Yirong Wu,&nbsp;Jingnan Yan,&nbsp;Tianxin Zhuang,&nbsp;Lingli Jiang,&nbsp;Youling Gao","doi":"10.1007/s10499-024-01682-2","DOIUrl":"10.1007/s10499-024-01682-2","url":null,"abstract":"<div><p>The experiment aimed to evaluate the effects of varying amounts of <i>Chlorella pyrenoidosa</i> meal as a supplementary diet and <i>Sinotaia quadrata</i> viscera on the growth, digestive enzyme activities, antithrombin activity, and gut morphology of <i>Whitmania pigra</i>. <i>W. pigra</i> (1.27 ± 0.01 g) were randomly assigned to four groups with triplicates each. The groups were fed with live <i>S. quadrata</i> (Snail group), live <i>S. quadrata</i> and 0.125 g/L <i>C. pyrenoidosa</i> meal (Snail + LA group), live <i>S. quadrata</i> and 0.250 g/L <i>C. pyrenoidosa</i> meal (Snail + HA group), as well as <i>S. quadrata</i> viscera (Snail viscera group). The feeding trial lasted for 30 days. The results showed that the final weight of Snail + HA group was significantly higher than that of Snail and Snail viscera groups, and it was significantly higher in Snail group than in Snail viscera group (<i>P</i> &lt; <i>0.05</i>). The trends in weight gains followed the same pattern as the body weights observed. The specific growth rate (SGR) values of Snail viscera group on days 0–15 and 0–30 were significantly lower than those of the other three groups (<i>P</i> &lt; <i>0.05</i>). Feed intake of the Snail + LA group was significantly higher than that of the other groups during days 0–30 (<i>P</i> &lt; <i>0.05</i>). The feed conversion ratio (FCR) of the Snail viscera group was inferior to that of the other three groups at both days 0–15 and 0–30 (<i>P</i> &lt; <i>0.05</i>). The activities of antithrombin, lipase and protease in the Snail + LA and Snail + HA groups exhibited a significant increase compared to the remaining two groups (<i>P</i> &lt; <i>0.05</i>). Additionally, the gene expression levels of Protease (<i>PT</i>) and Superoxide dismutase (<i>SOD</i>) in the Snail + LA and Snail + HA groups were significantly higher than those in the Snail group (<i>P</i> &lt; <i>0.05</i>). Moreover, the gut cell junction of the Snail visceral group appeared relatively loose, characterized by the presence of more cell vacuoles within the epithelial tissue and the occurrence of black substances in certain cells. In conclusion, both 0.125 and 0.250 g/L <i>C. pyrenoidosa</i> meal, when used as a supplementary diet in combination with live <i>S. quadrata</i>, improved the growth performance and increased antithrombin, lipase and protease activities in <i>W. pigra</i>. However, feeding prepared <i>S. quadrata</i> viscera to <i>W. pigra</i> adversely affected the growth and gut morphology.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}