ABSTRACT Marine fish parasites threaten both aquaculture sustainability and food safety and have been studied for more than 200 years with more than 10,000 papers. However, there has been no systematic summary of this area in recent years. A total of 11,368 research papers on marine fish parasites were collected from Web of Science (WoS) and Scopus. On the basis of bibliometrics, the output of research achievements, contributions from countries/regions, institutions and authors, as well as their collaborative relationships, core journals, highly cited papers and references, were analysed. The evolutionary trends in research themes within this field were also explored. Emerging countries, institutions and scholars continue to appear in the study of marine fish parasites, and new achievements have been made in such fields as parasitology, genetics and marine ecology. The immune mechanisms, disease monitoring and vaccine development for parasitic diseases in commonly farmed fish species are key areas of focus for researchers in the coming period. This article provides a comprehensive portrait of marine fish parasite research, which is helpful for researchers to determine the research theme and choose partners and publications. The research limitation is that inconsistencies in data from different sources result in slight deviations in the analysis results.
Dagon Ribeiro, Emerson De Carvalho, Gustavo Fonseca
Aquaculture is a rapidly growing industry worldwide, with Nile tilapia (Oreochromis niloticus) being one of the most intensively farmed fish species. This study aimed to evaluate the growth performance and water quality parameters in different culture systems for Nile tilapia. Six treatments were tested, including variations in feed type (commercial or microalgae), aeration, and their combinations. The results showed that the presence of commercial feed and aeration (T2) resulted in the highest weight gain and specific growth rates, while treatments without commercial feed showed lower growth performance. The addition of microalgae supplementation did not significantly improve growth compared to commercial feed alone. Water quality parameters, particularly nitrite levels and dissolved oxygen, played crucial roles in the production of tilapia. It was observed that high nitrite levels were associated with decreased growth and survival rates. Proper monitoring and management of water quality, including nitrite levels and dissolved oxygen, are essential to ensure the survival and growth of tilapia in aquaculture systems. These findings highlight the importance of implementing sustainable practices and appropriate feeding strategies to optimize the growth and well-being of farmed tilapia while minimizing environmental impacts.
İsmail Burak Daban, Yusuf Şen, Alkan Öztekin
et al.
Between 2021-2022, a dense mucilage disaster occurred in the Sea of Marmara in Türkiye. Mucilage mostly covered coastal areas, which juvenile fish use for nurseries, growth, and protection. Due to Sand steenbras having been suggested as an environmental bioindicator species for Mediterranean coastal waters, this study attempts to reveal post-mucilage distribution and potential differences on the timing of hatching, daily age, growth, and mortality as revealed by the otolith microstructure. Individuals were sampled using beach seine nets from 12 equally spaced stations along the Sea of Marmara. Its presence and significant abundance in 10 out of 12 stations showed the Sand steenbras to be a common juvenile species for the Sea of Marmara. Hatching occurs between May-January, with peak hatching occurring in October. When considering that the mucilage had completely disappeared from the environment in August, the first set of hatching months can be seen to coincide with the dense mucilage. Thus, Sand steenbras can be considered as able to reproduce under these environmental conditions. The daily age of the Sand steenbras juveniles ranged between 38-235 days, with a mean of 120.3 ± 1.8 days. The daily growth and mortality rates were also calculated respectively as 0.226 mm/day and 4.11%.
Fisheries within India have significant financial, nutritional and socio-economic development prospects. The country has a diversified natural fishery resource. Fishermen have continuously undertaken fisheries activity throughout the country over decades and fisheries co-operatives have now been developed for cumulative production and effective regulation of fishery activities. It was observed that there have been many inconsistencies, mostly in the management of fisheries co-operatives; a few were effectively handled under active supervision and government backing, whereas many co-operatives are facing various problems for their existence. Effective administration of fisherman's co-operatives is critical for increasing fishing productivity and the socio-economic growth of fishermen. Co-operatives can help fishermen develop their skills and gather information about technology, marketing, and management. Co-operatives can improve productivity, processing, storing and transportation capabilities while also meeting financial demands. As a result, co-operative organisations may contend with multinational corporations by integrating competent management abilities with co-operative power. To do this, a nationwide research project focusing on different elements of fisheries co-operatives is recommended. The need for appropriate policy implications for such sustainable management of fisheries co-operatives in accordance with current technical advancements in the sector of aquaculture, environmental degradation and global warming has been highlighted.
Arini Resti Fauzi, Munti Yuhana, Widanarni Widanarni
et al.
Abstract
Dayak onion (Eleutherine bulbosa (Mill.) Urb.) has the potential to be an immunostimulant to benefit fish health. This study aimed to evaluate the effectiveness of dietary supplementation with the powder and crude ethanol extracts of Dayak onion on the hematology and immune response parameters of Nile tilapia challenged with Aeromonas hydrophila. The research used a completely randomized design with six treatments and three replications. Nile tilapias were fed with Dayak onion (w/v) consisting of powders of 5% (P5), 10% (P10), and 15% (P15), while crude extract was 0.5% (E05) and given during rearing for 30 days. Positive control (C+) and negative control (C-) were used without Dayak onion. Nile tilapia in treatment C+, P5, P10, and P15 were injected with A. hydrophila 10ⶠCFU mLâ»1, while that in treatment C- was injected with phosphate buffered saline (PBS) intramuscularly. The results showed that the dietary with 15% powder and 0.5% crude extract significantly improved the hematology and immune response parameters compared to the control after the challenge against A. hydrophila (P<0.05). Dayak onion supplementation effectively increased the health status based on hematology and immune response parameters of Nile tilapia against A. hydrophila infection.
Highlight Research
• Dayak onion has significant potential to improve nonspecific immunity in fish.
• Dayak onion improves hematology and immune response of Nile tilapia.
• Dayak onion can significantly regulate the immune system against A. hydrophila infection.
• Dayak onion significantly increases the production of the gene expression of IL-1β and TNF-α.
Virna Br Sinulingga, Ternala Alexander Barus, Hesti Wahyuningsih
The Asahan River, located in the Tanjungbalai city area, is used for plantation, agriculture, animal husbandry activities, toilet washing facilities, hospitals, hotels, settlements, and industry causing the decrease water quality of Asahan River. The purpose of this study was to analyze the water quality and status of the Asahan River water quality in the Tanjungbalai City Area and develop a pollution control strategy that needs to be implemented to prevent a decrease in the Asahan River water quality in the Tanjungbalai City Area. Purposive sampling technique as used to determine the sampling station. In this study, there were 6 sampling stations based on the activities of the local community with 3 repetitions of sampling. The data analysis techniques from this study are Water Quality Analysis using the Pollution Index (IP) Method and Water Pollution Control Strategy Analysis. The results of water quality analysis based on the pollution index on Asahan river water in Tanjungbalai City show that the average water pollution index is in the moderately polluted category. The maximum of river water pollution index results were at station 2 is 9,086 and the minimum of river water pollution index results were at station 5 is 6,111.Water pollution occurs due to the parameters of phosphate, detergent, oil and grease, and total coliform which have exceeded the quality standard threshold based on Government Regulation of the Republic of Indonesia Number 21 of the year 2022 concerning Management of Water Quality and Control of Class I Water Pollution.
Keywords:
Asahan River
Water pollution Index
Water Quality
Chum salmon is a widely spread species on the continental coast of the Okhotsk Sea presented exclusively by typical anadromous phenotype. Abundance of the runs is well correlated with length of the spawning rivers, whereas dynamics of the runs is determined by variations of climate conditions and press of commercial fishery. Detailed data on geographic and temporal structure of the species are presented, as the summarized data on timing and dynamics of the spawning migration and information on geographic and interannual variability of biological parameters of the spawners.
Dewi Ulfa Trisdiani, Sri Purwaningsih, Ekowati Handharyani
Keong matah merah (Cerithidea obtusa) terbukti memiliki potensi farmakologis sebagai obat. Penelitian ini bertujuan menganalisis kadar enzim transaminase, yaitu serum glutamic pyruvic transaminase (SGPT) dan serum glutamic oxaloacetic transaminase (SGOT) pada serum tikus putih (Rattus novergicus) jantan galur Sprague Dawley yang diberi ekstrak etanol daging keong matah merah (C. obtusa) selama 28 hari. Kadar SGOT dan SGPT yang mengalami peningkatan secara bersamaan dapat menjadi indikator kerusakan hati. Hasil penelitian menunjukkan daging mentah segar keong matah merah (C. obtusa) mempunyai kadar air, protein, lemak, dan abu berturut-turut sebesar 74,22%; 11,99%; 0,63%, dan 8,40%. Ekstrak etanol daging mentah segar keong matah merah memiliki rendemen sebesar 3,41%. Penelitian ini menggunakan 24 ekor tikus putih jantan, yang dibagi secara acak menjadi 4 kelompok dan mendapatkan perlakuan yang berbeda selama 28 hari. Kelompok 1 (kontrol) beri akuades 2 ml/hari, kelompok 2 beri metotreksat 0,125 mg/kg BB/dua hari , kelompok 3 dan 4 diberi ekstrak etanol daging keong matah merah berturut-turut dengan dosis 100 dan 200 mg/kg BB/hari. Pengambilan sampel serum darah dilakukan pada hari ke-29 secara intrakardiak, kemudian dilakukan analisis kadar SGOT dan SGPT. Hasil penelitian menunjukkan bahwa ekstrak etanol daging keong matah merah dengan dosis 100 dan 200 mg/kg BB/hari secara signifikan menurunkan kadar SGOT dan SGPT pada serum tikus putih jantan.
KATA KUNCI:
ABSTRACT
The red eyed snail (Cerithidea obtusa) has been shown to have pharmacological potential as a drug. This study aimed to anal,yze the levels of transaminase enzymes, namely serum glutamic pyruvic transaminase (SGPT) and serum glutamic oxaloacetic transaminase (SGOT) in the serum of male white rats (Rattus novergicus) Sprague Dawley strain given ethanol extract of red eye snail meat (C. obtusa) for 28 days. Levels of SGOT and SGPT which increase simultaneously can be an indicator of liver damage. The results showed that fresh raw meat of red eyed snail (Cerithidea obtusa) had water, protein, fat and ash content respectively of 74.22%; 11.99%; 0.63%, and 8.40%. Ethanol extract of fresh raw meat of red eyed snail has a yield of 3.41%. This study used 24 male white rats which were randomly grouped into 4 groups and received different treatments for 28 days. Group 1 (control) was given a 2 ml of distilled water/day, group 2 was treated with methotrexate 0.125 mg/kg BW/two days, while groups 3 and 4 were fed with ethanol extract of red eye snail meat of 100 and 200 mg/kg BW/day respectively. Blood serum samples were taken by intracardiac method on the 29th day and then analyzed for SGOT and SGPT levels. The results showed that the red eye snail meat ethanol extract with doses of 100 and 200 mg/kg BW/day was significantly able to reduce SGOT and SGPT levels in male white rats serum.
Mohamed Salihu Mohamed Nafees, Mohd Salleh Kamarudin, Murni Karim
et al.
Aquafeeds with optimum digestible starch levels provide nutritional, economic, and environmental benefits in aquaculture. Tinfoil barb juveniles can optimally utilize 19.25% dietary corn starch, but their ability to use commonly available starch sources has not been explored. This study aimed to compare the effects of starch sources on fish growth, nutrient retention, intestinal α-amylase activity and liver histology. Five experimental diets with approximately 45% crude protein and 17.5 kJ g–1 gross energy were prepared using native corn, sago and tapioca starches and taro and wheat flours. Each diet was randomly allocated to triplicate groups of 20 fish (3.34 ± 0.12 g) and feeding was done for eight weeks. Results revealed that weight gain and specific growth rate of fish did not differ among the starch sources. However, compared to corn starch, dietary taro flour increased daily feed intake of fish whereas wheat flour decreased it (P < 0.05). Fish fed dietary corn and tapioca starches showed lower feed conversion ratio and higher protein efficiency than those fed taro flour (P < 0.05). Protein and energy retention were lower in taro group compared to corn group whereas lipid retention was lower in taro and wheat groups than corn and tapioca groups (P < 0.05). Midgut α-amylase activity was higher in fish fed sago and tapioca than those fed taro and wheat flours (P < 0.05). Hepatocyte was smaller in taro group than fish fed other diets while its nucleus was smaller in wheat group compared to corn group (P < 0.05). Lower performance in flour-based diet groups could be attributed to flour properties. Overall performance of sago and wheat groups was comparable to both corn and taro groups. In conclusion, tinfoil barb juveniles could better utilize corn and tapioca starches but not taro flour. The findings can extend appropriate use of starch in aquafeeds to sustain future aquaculture.
Marine tropical carnivorous (MTC) fish are less tolerant to high dietary lipid compared with cold and temperate climate fish. However, insufficient n‐3 long‐chain (≥C 20 ) polyunsaturated fatty acids (LC‐PUFA) compromises MTC fish health and growth which requires attention when choosing lipid sources in aquafeed formulations. Fish oil (FO) has been the major lipid source for feeding key MTC fish. We estimated that more than 200 thousand tonnes of FO were used to feed farmed MTC fish in 2016, representing nearly 25% of global FO production. Nevertheless, recent increases in FO prices and demand, and the foreseen inability of wild fisheries to produce sufficient FO in the future, have created a need for cheaper and more sustainable alternatives. Meta‐analysis showed that feeding vegetable oils (VO) to MTC fish can slightly reduce their growth, with a marked decrease in n‐3 LC‐PUFA content in the fish tissues corresponding with the increased replacement of FO and fishmeal in the diet. Rendered terrestrial animal fat or modulating the bioconversion of n‐3 LC‐PUFA precursors in VO can be utilised further in MTC fish nutrition with more research recommended on these approaches. Oils and oil‐rich meals from non‐food marine organisms are rich in n‐3 LC‐PUFA and represent an underutilised alternative to FO for tropical aquaculture. With oils rich in n‐3 LC‐PUFA produced from transgenic plants presently gaining regulatory approvals and becoming available as a renewable alternative to FO, aquaculture in the tropics and around the globe is ready to leap into a new phase of sustainable expansion.
Abstract Marine aquaculture is expanding into deeper offshore environments in response to growing consumer demand for seafood, improved technology, and limited potential to increase wild fisheries catches. Sustainable development of aquaculture will require quantification and minimization of its impacts on other ocean‐based activities and the environment through scientifically informed spatial planning. However, the scientific literature currently provides limited direct guidance for such planning. Here, we employ an ecological lens and synthesize a broad multidisciplinary literature to provide insight into the interactions between offshore aquaculture and the surrounding environment across a spectrum of spatial scales. While important information gaps remain, we find that there is sufficient research for informed decisions about the effects of aquaculture siting to achieve a sustainable offshore aquaculture industry that complements other uses of the marine environment.