Pub Date : 2024-03-31DOI: 10.33997/j.afs.2024.37.1.004
A. Chatha, Saima Naz, D. Danabaş
The demand for sustainable and efficient protein sources in aquaculture has led to an increasing interest in exploring alternative feeds for fish. In recent years, insects have emerged as a promising option due to their nutritional value, economic viability, and potential to alleviate the environmental impact of traditional fish meals. This review critically examines the existing literature on the effect of insect feed on fish growth. Through a comprehensive analysis of relevant studies, we evaluate the performance of fish fed with insect-based diets compared to those fed with conventional feeds. The review encompasses various insect species, feed formulations, and fish species, providing insights into the factors influencing growth outcomes. Our findings highlight the potential benefits and challenges of incorporating insect-based feeds in fish farming practices, with implications for sustainable aquaculture and food security. By synthesizing current knowledge, this review aims to guide future research and decision-making processes for optimizing fish nutrition and production while promoting ecological sustainability.
{"title":"Effect of Insect Feed on Fish Growth: A Review","authors":"A. Chatha, Saima Naz, D. Danabaş","doi":"10.33997/j.afs.2024.37.1.004","DOIUrl":"https://doi.org/10.33997/j.afs.2024.37.1.004","url":null,"abstract":"The demand for sustainable and efficient protein sources in aquaculture has led to an increasing interest in exploring alternative feeds for fish. In recent years, insects have emerged as a promising option due to their nutritional value, economic viability, and potential to alleviate the environmental impact of traditional fish meals. This review critically examines the existing literature on the effect of insect feed on fish growth. Through a comprehensive analysis of relevant studies, we evaluate the performance of fish fed with insect-based diets compared to those fed with conventional feeds. The review encompasses various insect species, feed formulations, and fish species, providing insights into the factors influencing growth outcomes. Our findings highlight the potential benefits and challenges of incorporating insect-based feeds in fish farming practices, with implications for sustainable aquaculture and food security. By synthesizing current knowledge, this review aims to guide future research and decision-making processes for optimizing fish nutrition and production while promoting ecological sustainability.","PeriodicalId":37296,"journal":{"name":"Asian Fisheries Science","volume":"31 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140359156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-31DOI: 10.33997/j.afs.2024.37.1.003
L. Sharma, Pooja Kaushik, Ila Singh, Neeta Sehgal, Varunendra Singh Rawat
Aquaporin or water channels have been reported to play a significant role in reproduction of marine and freshwater fishes. This study deals with the elucidation of the role of aquaporins 1 and 3 during oocyte maturation and hydration in benthophil and pelagophil eggs of fishes. Partial sequencing of aqp1 and aqp3 genes of Clarias gariepinus and Channa punctatus was carried out. Expression of aquaporin genes (aqp1 and aqp3) was assessed, and a direct correlation was observed between the transcript number of aqp1 and water content of oocytes during oocyte maturation and ovulation in demersal eggs of C. gariepinus. Treatment of oocytes with channel blockers under in vitro conditions elucidated the role of aquaporins in hydration. It alludes the role of aquaporins presumably associated with the hydration at the time of oocyte maturation. In silico characterisation of aquaporin 1 of Clarias magur, a congeneric species of C. gariepinus and aquaporin 3 of C. gariepinus, established the presence of conserved NPA (asparagine-proline-alanine sequences) motifs in them. The comparison of expression pattern for both the aquaporins 1 and 3 were also observed in the preliminary study of pelagophil eggs collected from C. punctatus. Elucidation of the role of aquaporins in the movement of fluids in teleost gonads and gametes may help to enhance the success rate of oocyte cryopreservation and thus will help in improving the breeding programs of cultured fishes and also the protection of endangered fishes.
{"title":"An Analysis of Aquaporin in the Oocyte Maturation of Teleosts, Clarias gariepinus and Channa punctatus","authors":"L. Sharma, Pooja Kaushik, Ila Singh, Neeta Sehgal, Varunendra Singh Rawat","doi":"10.33997/j.afs.2024.37.1.003","DOIUrl":"https://doi.org/10.33997/j.afs.2024.37.1.003","url":null,"abstract":"Aquaporin or water channels have been reported to play a significant role in reproduction of marine and freshwater fishes. This study deals with the elucidation of the role of aquaporins 1 and 3 during oocyte maturation and hydration in benthophil and pelagophil eggs of fishes. Partial sequencing of aqp1 and aqp3 genes of Clarias gariepinus and Channa punctatus was carried out. Expression of aquaporin genes (aqp1 and aqp3) was assessed, and a direct correlation was observed between the transcript number of aqp1 and water content of oocytes during oocyte maturation and ovulation in demersal eggs of C. gariepinus. Treatment of oocytes with channel blockers under in vitro conditions elucidated the role of aquaporins in hydration. It alludes the role of aquaporins presumably associated with the hydration at the time of oocyte maturation. In silico characterisation of aquaporin 1 of Clarias magur, a congeneric species of C. gariepinus and aquaporin 3 of C. gariepinus, established the presence of conserved NPA (asparagine-proline-alanine sequences) motifs in them. The comparison of expression pattern for both the aquaporins 1 and 3 were also observed in the preliminary study of pelagophil eggs collected from C. punctatus. Elucidation of the role of aquaporins in the movement of fluids in teleost gonads and gametes may help to enhance the success rate of oocyte cryopreservation and thus will help in improving the breeding programs of cultured fishes and also the protection of endangered fishes.","PeriodicalId":37296,"journal":{"name":"Asian Fisheries Science","volume":"33 35","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140358467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-31DOI: 10.33997/j.afs.2024.37.1.005
Nuwan D.P. Gunwardane, M. de Croos, Upali Sarath Amarasinghe
Recent trends in the pelagic fish landings of multi-day fishing fleets operated from Sri Lanka indicated significant declines in many fish species. Therefore, the present preliminary analysis investigates the perceptions of fishers on recent declining trends of pelagic fish landings from offshore areas of the Indian Ocean and further investigates whether the most common pelagic species landed in Sri Lanka conform to the gill oxygen limitation theory (GOLT) and to speculate GOLT as a possible explanation to such trends. According to the perceptions of 457 skippers of fishing vessels interviewed, such declines were possibly attributed to shifting of the areas of occurrence of pelagic fish species, making them less vulnerable to multi-day fishing vessels. As climate change and deoxygenation are major stressors affecting fish stocks, there is a challenging need for disentangling the impacts of these stressors from the effects of overfishing. The 18 most common pelagic fish species harvested from the Indian Ocean confirmed to the predictions from the GOLT, suggesting that shifting of these stocks could be due to deoxygenation which may have been triggered by increased sea surface and sub-surface temperatures. Therefore, fishery-independent surveys are needed to investigate the shifting of areas of occurrence of pelagic fishes in the Indian Ocean to understand their areas of occurrence the further investigate the relevance of GOLT for defining regional fisheries management plans.
{"title":"Recent Declining Trends in Pelagic Fish Catches in the Indian Ocean off Sri Lanka: Is Gill Oxygen Limitation Theory (GOLT) a Possible Explanation?","authors":"Nuwan D.P. Gunwardane, M. de Croos, Upali Sarath Amarasinghe","doi":"10.33997/j.afs.2024.37.1.005","DOIUrl":"https://doi.org/10.33997/j.afs.2024.37.1.005","url":null,"abstract":"Recent trends in the pelagic fish landings of multi-day fishing fleets operated from Sri Lanka indicated significant declines in many fish species. Therefore, the present preliminary analysis investigates the perceptions of fishers on recent declining trends of pelagic fish landings from offshore areas of the Indian Ocean and further investigates whether the most common pelagic species landed in Sri Lanka conform to the gill oxygen limitation theory (GOLT) and to speculate GOLT as a possible explanation to such trends. According to the perceptions of 457 skippers of fishing vessels interviewed, such declines were possibly attributed to shifting of the areas of occurrence of pelagic fish species, making them less vulnerable to multi-day fishing vessels. As climate change and deoxygenation are major stressors affecting fish stocks, there is a challenging need for disentangling the impacts of these stressors from the effects of overfishing. The 18 most common pelagic fish species harvested from the Indian Ocean confirmed to the predictions from the GOLT, suggesting that shifting of these stocks could be due to deoxygenation which may have been triggered by increased sea surface and sub-surface temperatures. Therefore, fishery-independent surveys are needed to investigate the shifting of areas of occurrence of pelagic fishes in the Indian Ocean to understand their areas of occurrence the further investigate the relevance of GOLT for defining regional fisheries management plans.","PeriodicalId":37296,"journal":{"name":"Asian Fisheries Science","volume":"99 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140360442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-27DOI: 10.33997/j.afs.2023.36.4.004
Muhamad Zudaidy Jaapar, W. N. Noordin, H. M. Yusof, Md. Ali Amatul-Samahah, Poh Chiang Chew, Azhar Hamzah
Malaysian Mahseer (Tor spp.) is a highly priced native freshwater fish in Malaysia and much sought after as food, ornamental and recreational fish. However, the production of mahseer is still insignificant. Due to the decline in the wild stock population of mahseer, farmers are compelled to rely heavily on imported broodstock or hatchery-produced fingerlings. The R&D on mahseer is also limited with only several reports on breeding techniques, feed requirement and genetic distance between populations. The availability of superior breeding stocks, efficient hatcheries management and formulation of maturation diet that could expedite the maturation process could greatly assist in increasing mahseer aquaculture productivity. This paper presents the R&D carried out by the Fisheries Research Institute, Department of Fisheries Malaysia starting from the 11th Malaysia Plan (2016 to 2020), particularly on the broodstock development, breeding, disease, seed management, formulation and validation of maturation diet. In this programme, broodstocks obtained from five different states namely Pahang, Johor, Sarawak, Perak and Terengganu, Malaysia were used as a base population and mated using full diallel method to produce a total of 75 families. The maturation diet enhanced the breeding capacity and shortened the maturation period of mahseer from 3.0 years to only 1.8–2.0 years. Three innovations, hatching system, nursing system and maturation diet were produced from this programme were also registered innovations. This paper also deliberates the challenges faced in broodstock development programme and the way forward.
{"title":"Research and Innovation in Malaysian Mahseer, Tor sp., Broodstock Development Programme","authors":"Muhamad Zudaidy Jaapar, W. N. Noordin, H. M. Yusof, Md. Ali Amatul-Samahah, Poh Chiang Chew, Azhar Hamzah","doi":"10.33997/j.afs.2023.36.4.004","DOIUrl":"https://doi.org/10.33997/j.afs.2023.36.4.004","url":null,"abstract":"Malaysian Mahseer (Tor spp.) is a highly priced native freshwater fish in Malaysia and much sought after as food, ornamental and recreational fish. However, the production of mahseer is still insignificant. Due to the decline in the wild stock population of mahseer, farmers are compelled to rely heavily on imported broodstock or hatchery-produced fingerlings. The R&D on mahseer is also limited with only several reports on breeding techniques, feed requirement and genetic distance between populations. The availability of superior breeding stocks, efficient hatcheries management and formulation of maturation diet that could expedite the maturation process could greatly assist in increasing mahseer aquaculture productivity. This paper presents the R&D carried out by the Fisheries Research Institute, Department of Fisheries Malaysia starting from the 11th Malaysia Plan (2016 to 2020), particularly on the broodstock development, breeding, disease, seed management, formulation and validation of maturation diet. In this programme, broodstocks obtained from five different states namely Pahang, Johor, Sarawak, Perak and Terengganu, Malaysia were used as a base population and mated using full diallel method to produce a total of 75 families. The maturation diet enhanced the breeding capacity and shortened the maturation period of mahseer from 3.0 years to only 1.8–2.0 years. Three innovations, hatching system, nursing system and maturation diet were produced from this programme were also registered innovations. This paper also deliberates the challenges faced in broodstock development programme and the way forward.","PeriodicalId":37296,"journal":{"name":"Asian Fisheries Science","volume":"3 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139592995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-31DOI: 10.33997/j.afs.2023.36.4.001
Rasidi Rasidi, Idil Ardi, Dewi Puspaningsih, V. A. Prakoso, Dedi Jusadi, A. Jayanegara
Interest has recently grown in the research of humic substances (HS) as a potential aquaculture feed additive, resulting in a growing number of publications. However, previous studies have shown varying results. Therefore, to gain a comprehensive understanding of the effects of HS, a quantitative analysis conducted through a meta-analysis is required. This study employed a meta-analysis approach to evaluate the effect of HS as a feed additive on the specific growth rate (SGR) and feed conversion ratio (FCR) of fish aquaculture. The Preferred Reporting Items for Systematic and Meta-Analysis (PRISMA) method was used to collect the data. Multiple databases were searched to identify relevant articles from scholarly journals. Ultimately, 18 publications that met the requirements were included in the analysis using OpenMEE software. The results revealed an effect size (comparing the control and the HS-supplemented groups) of 0.154 (95 % CI, P < 0.001) for SGR. Additionally, there was a notable improvement in FCR with an effect size of -0.220 (95 % CI, P < 0.001). However, it is important to note that the analysis showed high heterogenicity (I2 values of 98.87 % and 97.91 % for SGR and FCR, respectively). In conclusion, HS supplementation may significantly improve fish growth and reduce FCRs in aquaculture. This meta-analysis contributes valuable insight into the use of HS as a beneficial feed additive in aquaculture practices.
{"title":"Utilisation of Humic Substances as a Feed Additive in Aquaculture: A Meta-Analysis","authors":"Rasidi Rasidi, Idil Ardi, Dewi Puspaningsih, V. A. Prakoso, Dedi Jusadi, A. Jayanegara","doi":"10.33997/j.afs.2023.36.4.001","DOIUrl":"https://doi.org/10.33997/j.afs.2023.36.4.001","url":null,"abstract":"Interest has recently grown in the research of humic substances (HS) as a potential aquaculture feed additive, resulting in a growing number of publications. However, previous studies have shown varying results. Therefore, to gain a comprehensive understanding of the effects of HS, a quantitative analysis conducted through a meta-analysis is required. This study employed a meta-analysis approach to evaluate the effect of HS as a feed additive on the specific growth rate (SGR) and feed conversion ratio (FCR) of fish aquaculture. The Preferred Reporting Items for Systematic and Meta-Analysis (PRISMA) method was used to collect the data. Multiple databases were searched to identify relevant articles from scholarly journals. Ultimately, 18 publications that met the requirements were included in the analysis using OpenMEE software. The results revealed an effect size (comparing the control and the HS-supplemented groups) of 0.154 (95 % CI, P < 0.001) for SGR. Additionally, there was a notable improvement in FCR with an effect size of -0.220 (95 % CI, P < 0.001). However, it is important to note that the analysis showed high heterogenicity (I2 values of 98.87 % and 97.91 % for SGR and FCR, respectively). In conclusion, HS supplementation may significantly improve fish growth and reduce FCRs in aquaculture. This meta-analysis contributes valuable insight into the use of HS as a beneficial feed additive in aquaculture practices.","PeriodicalId":37296,"journal":{"name":"Asian Fisheries Science","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139135678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-31DOI: 10.33997/j.afs.2023.36.4.003
Arissara Sopawong, F. Yusoff, M. Zakaria, S. N. Amin, Hui Teng Tan, Amalia Mohd Hashim
Nutrient enrichment is one of the main reasons causing water quality deterioration and eutrophication in aquaculture systems, such as tanks, ponds, and natural water bodies where cage aquaculture is located. The integration of aquatic plants and substrates synergistically utilises nutrients for the development of biofilm and plant growth, thus improving the water quality in tanks. The experiment was performed in three trials to assess the use of commercial plants integrated with substrates in enhancing nutrient removal in nutrient-enriched mesocosms. Among the plants, the combination of water spinach and lemon basil exhibited significantly higher (P < 0.05) nutrient removal without causing adverse effects on plant growth when compared to the other treatments. For the substrates, the lava rock and bamboo showed the highest (P < 0.05) periphyton development and productivity. The integration of water spinach and lava rock resulted in the highest (P < 0.05) nutrient removal and plant relative growth rates indicating the positive effects of synergistic interaction between plants and microbial-periphyton colonised substrates. A total of 27 bacterial phyla (mainly non-pathogenic) were identified in the integrated water spinach and lava rock substrate treatment. Microbial community structure analysis showed that Proteobacteria, Planctomycetota, Verrucomicrobiota and Bacteroidota were the main groups found in water, roots of water spinach, and substrates. The highest (P < 0.05) bacterial diversity was observed in the substrates, followed by plant roots and water. This study illustrated that the water quality could be significantly improved by integrating suitable plants and microbial-periphyton colonised substrates in tanks.
{"title":"Synergistic Combination of Plants and Microbial-Rich Substrates Improves Water Quality in an Integrated Plant-Substrate System","authors":"Arissara Sopawong, F. Yusoff, M. Zakaria, S. N. Amin, Hui Teng Tan, Amalia Mohd Hashim","doi":"10.33997/j.afs.2023.36.4.003","DOIUrl":"https://doi.org/10.33997/j.afs.2023.36.4.003","url":null,"abstract":"Nutrient enrichment is one of the main reasons causing water quality deterioration and eutrophication in aquaculture systems, such as tanks, ponds, and natural water bodies where cage aquaculture is located. The integration of aquatic plants and substrates synergistically utilises nutrients for the development of biofilm and plant growth, thus improving the water quality in tanks. The experiment was performed in three trials to assess the use of commercial plants integrated with substrates in enhancing nutrient removal in nutrient-enriched mesocosms. Among the plants, the combination of water spinach and lemon basil exhibited significantly higher (P < 0.05) nutrient removal without causing adverse effects on plant growth when compared to the other treatments. For the substrates, the lava rock and bamboo showed the highest (P < 0.05) periphyton development and productivity. The integration of water spinach and lava rock resulted in the highest (P < 0.05) nutrient removal and plant relative growth rates indicating the positive effects of synergistic interaction between plants and microbial-periphyton colonised substrates. A total of 27 bacterial phyla (mainly non-pathogenic) were identified in the integrated water spinach and lava rock substrate treatment. Microbial community structure analysis showed that Proteobacteria, Planctomycetota, Verrucomicrobiota and Bacteroidota were the main groups found in water, roots of water spinach, and substrates. The highest (P < 0.05) bacterial diversity was observed in the substrates, followed by plant roots and water. This study illustrated that the water quality could be significantly improved by integrating suitable plants and microbial-periphyton colonised substrates in tanks.","PeriodicalId":37296,"journal":{"name":"Asian Fisheries Science","volume":"116 34","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139134141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-31DOI: 10.33997/j.afs.2023.36.4.002
Rizka Fauziana Syarifah, Murwantoko Murwantoko, E. Setyobudi
This research investigates the prevalence and mean intensity of Anisakis larvae on the bigeye scad, Selar crumenophthalmus (Bloch, 1793), along the Indian Ocean off Java. In total, 498 fish samples were collected from four locations: the Indian Ocean off East Java, Yogyakarta Special Territory, Central Java, and West Java. Each fish sample was measured for length and weight, then examined for Anisakis larvae in the abdominal cavity, liver, gonads, digestive tract, and muscle. Morphological characterisation was done using scanning electron microscope (SEM). The ITS rDNA region was amplified using PCR, then used to perform RFLP for identification and sequenced to form a phylogenetic tree. The results demonstrated that the bigeye scad was vulnerable to infection by Anisakis nematodes with varying prevalence and mean intensity at each location. The bigeye scad from the Indian Ocean off East Java had the highest prevalence and mean intensity (P = 75.44 %; MI = 10.38 larvae per-host), while from West Java had the lowest prevalence (P = 1.45 %; MI = 3.33 larvae per-host). The prevalence of Anisakis in the bigeye scad tends to decrease as one moves to the west from the sampling locations. Most larvae were found in the abdominal cavity (70 %–100 %), whereas a relatively low prevalence was found in other organs. The direct sequencing in the ITS rDNA region showed that Anisakis larvae found in the bigeye scad were A. typica (Diesing, 1860), which was indicated as A. typica var. indonesiensis (A. typica sp. B). Anisakis infection can be utilised as a biological indicator for movement patterns and fish stock differentiation.
{"title":"Prevalence and Intensity of Larvae of the Genus Anisakis sensu lato (Nematoda, Anisakidae) in Bigeye Scad, Selar crumenophthalmus (Bloch 1793), from the Indian Ocean off Java, Indonesia","authors":"Rizka Fauziana Syarifah, Murwantoko Murwantoko, E. Setyobudi","doi":"10.33997/j.afs.2023.36.4.002","DOIUrl":"https://doi.org/10.33997/j.afs.2023.36.4.002","url":null,"abstract":"This research investigates the prevalence and mean intensity of Anisakis larvae on the bigeye scad, Selar crumenophthalmus (Bloch, 1793), along the Indian Ocean off Java. In total, 498 fish samples were collected from four locations: the Indian Ocean off East Java, Yogyakarta Special Territory, Central Java, and West Java. Each fish sample was measured for length and weight, then examined for Anisakis larvae in the abdominal cavity, liver, gonads, digestive tract, and muscle. Morphological characterisation was done using scanning electron microscope (SEM). The ITS rDNA region was amplified using PCR, then used to perform RFLP for identification and sequenced to form a phylogenetic tree. The results demonstrated that the bigeye scad was vulnerable to infection by Anisakis nematodes with varying prevalence and mean intensity at each location. The bigeye scad from the Indian Ocean off East Java had the highest prevalence and mean intensity (P = 75.44 %; MI = 10.38 larvae per-host), while from West Java had the lowest prevalence (P = 1.45 %; MI = 3.33 larvae per-host). The prevalence of Anisakis in the bigeye scad tends to decrease as one moves to the west from the sampling locations. Most larvae were found in the abdominal cavity (70 %–100 %), whereas a relatively low prevalence was found in other organs. The direct sequencing in the ITS rDNA region showed that Anisakis larvae found in the bigeye scad were A. typica (Diesing, 1860), which was indicated as A. typica var. indonesiensis (A. typica sp. B). Anisakis infection can be utilised as a biological indicator for movement patterns and fish stock differentiation.","PeriodicalId":37296,"journal":{"name":"Asian Fisheries Science","volume":"108 31","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139134510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-30DOI: 10.33997/j.afs.2023.36.3.006
AWAWU DASUKI, YUZINE B. ESA, ANNIE CHRISTIANUS, MOHAMMAD FADHIL SYUKRI ISMAIL, SAMUEL IJABO OGAH
The climbing perch, Anabas testudineus (Bloch, 1792), is a commercially important freshwater fish in Southeast Asia. To meet demand, establishing stock development breeding programmes is essential. However, there is a lack of scientific literature on parent-hybrids differences. This study aims to use morphometric characteristics to identify important predictors and determine their heritability to address the knowledge gap. Two strains of A. testudineus and their corresponding hybrid groups, represented by T1–T4 (T1: golden Thai (♀) × golden Thai (♂), T2: golden Thai (♀) × Malaysian (♂), T3: Malaysian (♀) × Malaysian (♂) and T4: Malaysian (♀) × golden Thai (♂)) were used for the experiment. Thirty individuals of each strain were randomly selected from their respective tanks for morphometric characteristics assessment. Twenty-five morphometric measurements were taken, and adjustments were made for body size effects. These measurements were then subjected to multivariate analysis with a 5 % selection intensity for genetic advancement, focusing on body depth and base of anal fin length. The morphometric characters, including postorbital length, lowest body depth,the base of analfin length,total length, standard length, pre-pectoral fin length,the base of pectoralfin length, and base of pelvic fin length based on the canonical coefficient, were identified as distinguishing factors between hybrids and the parental population. The study showed that body length heritability was greater than 60 %, indicating a significant additive genetic effect that surpasses the impact of the environmental effect and thus could be used as a potential characteristic for selective breeding to improve the desired trait.
{"title":"Distinguishing Hybrids of Golden Thailand and Malaysian Strains of Climbing Perch, Anabas testudineus (Bloch, 1792), Using Multivariate Analyses of Morpho-Meristic Traits","authors":"AWAWU DASUKI, YUZINE B. ESA, ANNIE CHRISTIANUS, MOHAMMAD FADHIL SYUKRI ISMAIL, SAMUEL IJABO OGAH","doi":"10.33997/j.afs.2023.36.3.006","DOIUrl":"https://doi.org/10.33997/j.afs.2023.36.3.006","url":null,"abstract":"The climbing perch, Anabas testudineus (Bloch, 1792), is a commercially important freshwater fish in Southeast Asia. To meet demand, establishing stock development breeding programmes is essential. However, there is a lack of scientific literature on parent-hybrids differences. This study aims to use morphometric characteristics to identify important predictors and determine their heritability to address the knowledge gap. Two strains of A. testudineus and their corresponding hybrid groups, represented by T1–T4 (T1: golden Thai (♀) × golden Thai (♂), T2: golden Thai (♀) × Malaysian (♂), T3: Malaysian (♀) × Malaysian (♂) and T4: Malaysian (♀) × golden Thai (♂)) were used for the experiment. Thirty individuals of each strain were randomly selected from their respective tanks for morphometric characteristics assessment. Twenty-five morphometric measurements were taken, and adjustments were made for body size effects. These measurements were then subjected to multivariate analysis with a 5 % selection intensity for genetic advancement, focusing on body depth and base of anal fin length. The morphometric characters, including postorbital length, lowest body depth,the base of analfin length,total length, standard length, pre-pectoral fin length,the base of pectoralfin length, and base of pelvic fin length based on the canonical coefficient, were identified as distinguishing factors between hybrids and the parental population. The study showed that body length heritability was greater than 60 %, indicating a significant additive genetic effect that surpasses the impact of the environmental effect and thus could be used as a potential characteristic for selective breeding to improve the desired trait.","PeriodicalId":37296,"journal":{"name":"Asian Fisheries Science","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136279927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The high fishing pressure may cause species evolutionary changes toward smaller maturation sizes. In this context, the fishing practices of mackerel scad, Decapterus macarellus (Cuvier, 1833), in tropical eastern Indonesia provide an excellent opportunity to examine this hypothesis. Two distinct fishing grounds, the Sulawesi Sea and Maluku Sea, were selected to explore this phenomenon. Samples of D. macarellus caught by purse seine fishers operating were sourced from the two fishing grounds. Analysing the total length and maturity stage of each D. macarellus specimen from the two stocks were made to estimate key parameters such as the length at first maturity (Lm) and total mortality (Z). The results revealed that total mortality, used as an indicator of fishing pressure, was higher in the Maluku Sea (5.3 year-1) than in the Sulawesi Sea (3.7 year-1) and other areas. Additionally, the Lm of D. macarellus in the Maluku Sea was remarkably lower (22.9 cm) than in the Sulawesi Sea (23.9 cm), which can be attributed to the higher fishing pressure. These findings support the fisheries-induced evolution hypothesis, particularly within Indonesian tropical fish stocks and their respective regions, adding new growing evidence that fishing pressure affects fish reproductive biology. The length at first maturity may serve as a valuable proxy for assessing the intensity of fishing pressure on fish stocks.
{"title":"Impact of Fishing Pressure on Reproductive Biology of Mackerel Scad, Decapterus macarellus (Cuvier, 1833)in Sulawesi Sea and Maluku Sea, Indonesia","authors":"HEIDI RETNONINGTYAS, SISKA AGUSTINA, ARYA KUSUMA DHANI, BUDY WIRYAWAN, HARRY W. PALM, MOHAMAD NATSIR, INTAN DESTIANIS HARTATI, RIAN PRASETIA, IRFAN YULIANTO","doi":"10.33997/j.afs.2023.36.3.005","DOIUrl":"https://doi.org/10.33997/j.afs.2023.36.3.005","url":null,"abstract":"The high fishing pressure may cause species evolutionary changes toward smaller maturation sizes. In this context, the fishing practices of mackerel scad, Decapterus macarellus (Cuvier, 1833), in tropical eastern Indonesia provide an excellent opportunity to examine this hypothesis. Two distinct fishing grounds, the Sulawesi Sea and Maluku Sea, were selected to explore this phenomenon. Samples of D. macarellus caught by purse seine fishers operating were sourced from the two fishing grounds. Analysing the total length and maturity stage of each D. macarellus specimen from the two stocks were made to estimate key parameters such as the length at first maturity (Lm) and total mortality (Z). The results revealed that total mortality, used as an indicator of fishing pressure, was higher in the Maluku Sea (5.3 year-1) than in the Sulawesi Sea (3.7 year-1) and other areas. Additionally, the Lm of D. macarellus in the Maluku Sea was remarkably lower (22.9 cm) than in the Sulawesi Sea (23.9 cm), which can be attributed to the higher fishing pressure. These findings support the fisheries-induced evolution hypothesis, particularly within Indonesian tropical fish stocks and their respective regions, adding new growing evidence that fishing pressure affects fish reproductive biology. The length at first maturity may serve as a valuable proxy for assessing the intensity of fishing pressure on fish stocks.","PeriodicalId":37296,"journal":{"name":"Asian Fisheries Science","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135585817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-26DOI: 10.33997/j.afs.2023.36.3.004
SHARON N. NUÑAL, RAYMUND B. PARCON, SHEINA B. LOGRONIO, NIZZY HOPE N. CARTAGO, MAY FLOR S. MUEGUE
Mussels are considered a low-cost protein source in the Philippines. The green mussel Perna viridis (Linnaeus, 1758) is widely consumed, while the brown mussel Modiolus modulaides (Röding, 1798) is not yet fully utilised as human food but used as animal food or fermented for human consumption. This study aims to determine the nutritional value of these mussels in terms of their proximate composition, amino acid, fatty acid, and mineral components. Results revealed that the moisture content of M. modulaides was significantly higher (P < 0.05) than P. viridis. In comparison, the crude protein content of P. viridis (11.39 %) was significantly higher (P < 0.05) than M. modulaides (9.19 %), but they have similar amounts of lipids. There were 18 amino acids detected in the two species with significantly higher (P < 0.05) total essential amino acids (EAA) and non-essential amino acids found in P. viridis. The most abundant EAA were leucine and lysine in P. viridis and M. modulaides. Results also revealed that the two mussel species are qualified for good quality protein claims with an essential amino acid index of >0.9 and digestible indispensable amino acid scores of >100 %. Palmitic and stearic acids were detected in both species, but eicosapentaenoic and docosahexaenoic acids were only detected in P. viridis. Sodium, potassium, iron, and calcium were also found in the two species. These results indicate that the two Philippine mussel species can be good sources of important amino acids, lipids and minerals for human and animal diets.
{"title":"Nutritional Evaluation of Green Mussel Perna viridis (Linnaeus, 1758) and Brown Mussel Modiolus modulaides (Röding, 1798) From Panay Island, Philippines","authors":"SHARON N. NUÑAL, RAYMUND B. PARCON, SHEINA B. LOGRONIO, NIZZY HOPE N. CARTAGO, MAY FLOR S. MUEGUE","doi":"10.33997/j.afs.2023.36.3.004","DOIUrl":"https://doi.org/10.33997/j.afs.2023.36.3.004","url":null,"abstract":"Mussels are considered a low-cost protein source in the Philippines. The green mussel Perna viridis (Linnaeus, 1758) is widely consumed, while the brown mussel Modiolus modulaides (Röding, 1798) is not yet fully utilised as human food but used as animal food or fermented for human consumption. This study aims to determine the nutritional value of these mussels in terms of their proximate composition, amino acid, fatty acid, and mineral components. Results revealed that the moisture content of M. modulaides was significantly higher (P < 0.05) than P. viridis. In comparison, the crude protein content of P. viridis (11.39 %) was significantly higher (P < 0.05) than M. modulaides (9.19 %), but they have similar amounts of lipids. There were 18 amino acids detected in the two species with significantly higher (P < 0.05) total essential amino acids (EAA) and non-essential amino acids found in P. viridis. The most abundant EAA were leucine and lysine in P. viridis and M. modulaides. Results also revealed that the two mussel species are qualified for good quality protein claims with an essential amino acid index of >0.9 and digestible indispensable amino acid scores of >100 %. Palmitic and stearic acids were detected in both species, but eicosapentaenoic and docosahexaenoic acids were only detected in P. viridis. Sodium, potassium, iron, and calcium were also found in the two species. These results indicate that the two Philippine mussel species can be good sources of important amino acids, lipids and minerals for human and animal diets.","PeriodicalId":37296,"journal":{"name":"Asian Fisheries Science","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134960599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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