Evolution of Earthen Pond Water Chemical and Physical Parameters in Polyculture System (Case of Nile Tilapia, Largemouth Bass, Chinese Carps) at Deroua Fisheries Station (Fkih Ben Saleh, Morocco)

Largemouth bass (Micropterus salmoides) were marked by exposing newly-hatched prolarvae to 6.4, 11.3, and 16.8 μCi 85Sr/liter pond water for 7 days. Embryos were collected by pipette from nests in ponds and incubated to hatching in disposable aquaria m the laboratory. Radiostrontium accumulation from water continued throughout the first week of postembryonic life but was most rapid after the fourth day of exposure. In another study the techniques were found useful for quantifying predation on larval bass by aquatic invertebrates.

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HUBUNGAN ANTARA KADAR BESI (Fe) AIR TAMBAK TERHADAP KADAR BESI (Fe) PADA DAGING IKAN NILA (Oreochromis niloticus) DAN IKAN BANDENG (Chanos chanos) DI KECAMATAN JABON SIDOARJO

Jurnal SainHealth ◽

10.51804/jsh.v2i2.258.21-28 ◽

2018 ◽

Vol 2 (2) ◽

pp. 21

Author(s):

Siti Dzurrotul Ainiyah ◽

Indah Lestri ◽

Ary Andini

Keyword(s):

Water Pollution ◽

Oreochromis Niloticus ◽

Nile Tilapia ◽

Pearson Correlation ◽

Pond Water ◽

The Body ◽

Chanos Chanos ◽

Fish Meat ◽

Pearson Correlation Test

Jabon sub-district was one of located affected by Lapindo mudflow that had effect in water quality causing environmental pollution. One of the indicators of water pollution was heavy metal Fe exceeded of Fe standard about 0,3mg/L. When Fe was accumulated in the body could make irritation on skin and eyes, respiratory symptom, and could be caused cancer in long term. The purpose of research was to know correlation between Fe levels of pond water with Nile tilapia fish and Milkfish. This research used 10 samples of pond water, Nile tilapia fish and Milkfish were taken at same location in pond area of Jabon Sub-district. Analyzed of Fe was using Atomic Absorption Spectrophotometer (AAS). Based on the result indicated that Fe levels of pond water in Jabon sub-district was lower than Fe standard with mean about 0,015±0,445mg/L. Meanwhile Fe levels of Nile tilapia fish and Milkfish had mean about 4,783±0,444mg/kg and 6,6589±2,845mg/kg those were higher than Fe standard (> 0.5 mg/kg). It could be indicated that fish meat of Nile tilapia fish and Milkfish were contaminated by Fe.Therefore, the results of pearson correlation test were shown no correlation between Fe levels of ponds water with Nile tilapia fish and Milkfish.

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ANALISIS PENGEMBANGAN BUDIDAYA RUMPUT LAUT Gracillaria sp DI KECAMATAN SINJAI TIMUR KABUPATEN SINJAI

Journal of Aquaculture and Environment ◽

10.35965/jae.v3i2.1068 ◽

2021 ◽

Vol 3 (2) ◽

pp. 30-33

Author(s):

Irmawati Malkab ◽

Hadijah Hadijah ◽

Sri Mulyani

Keyword(s):

Water Environment ◽

Pond Water ◽

Limiting Factor ◽

Physical Parameters ◽

Chemical Physics ◽

Seaweed Farming ◽

East Village ◽

Suitable Site ◽

Physical And Chemical ◽

The Village

Kondisi lingkungan perairan tambak terutama dari aspek kualitas fisika dan kimia perairan sangat menentukan keberhasilan budidaya rumput laut gracilaria sp. Tujuan penelitian ini adalah menganalisis parameter fisika dan kimia air tambak yang mendukung pengembangan budidaya rumput laut dan penentuan lokasi yang sesuai untuk pengembangan budidaya rumput laut ditinjau dari aspek fisika dan kimia air di empat desa/Kelurahan Kecamatan Sinjai Timur Kabupaten Sinjai. Dilaksanakan pada bulan Januari sampai Februari 2016. Teknik analisis dilakukan dengan menentukan beberapa parameter fisika kimia air sebagai faktor pembatas yang terdiri dari: kecerahan, suhu, kedalaman, salinitas, pH, DO,CO2, fosfat, dan nitrat. Parameter pembatas dalam empat kelas kategori, yaitu kelas sangat sesuai, sesuai, kurang sesuai , dan tidak sesuai. Hasil Penelitian menunjukkan tambak di Kelurahan Samataring, Desa Tongke-tongke, Desa Panaikang, dan Desa Pasimarannu sesuai untuk pengembangan budidaya rumput laut gracillaria sp. Condition pond water environment, especially from the aspect of water quality chemical physics determine the success of seaweed farming gracilaria sp. The purpose of this study was to analyze the physical and chemical parameters of water ponds, which supports the development of seaweed farming and determining a suitable site for the development of seaweed cultivation from the aspect of chemical physics of water in four villages / East Village Sinjai Sinjai district. Conducted in January and February 2016. Technical analysis is done by determining several physical parameters of water chemistry as a limiting factor consisting of: brightness, temperature, depth, salinity, pH, DO, CO2, phosphate, and nitrate. Parameters delimiter in four grade categories, namely class is suitable, appropriate, less appropriate and not appropriate. Research shows ponds in the village of Samataring, Tongke-tongke, Panaikang and pasimarannu appropriate for the cultivation of seaweed gracillaria sp.

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The impacts of introduced species on lake ecosystems: A case of Lakes Victoria and Naivasha, Kenya.

10.31730/osf.io/b5nyt ◽

2019 ◽

Author(s):

Nicholas Outa ◽

Dan Mungai ◽

James Last A. Keyombe

Keyword(s):

Introduced Species ◽

Fish Species ◽

Largemouth Bass ◽

Water Hyacinth ◽

Native Species ◽

Nile Tilapia ◽

Lake Victoria ◽

Nile Perch ◽

Lake Naivasha ◽

Lake Ecosystems

Fish and other aquatic organisms have been introduced into new environments for various reasons. Provision of sports fishery, supplemental to stocks, to fill empty niches, control weeds, and disease vectors and even create a commercial fishery are some of the reasons why fish species are introduced into new ecosystems. Lake Victoria and Lake Naivasha in Kenya have seen several introductions as discussed in this paper. In Lake Victoria for example, some of the species introduced include Nile perch, Lates niloticus, Nile tilapia, Oreochromis niloticus, Tilapia zilii, and Oreochromis esclentus among others. The most successful introductions have been that of the Nile perch, Nile tilapia and water hyacinth. Lake Naivasha too has witnessed a number of introductions into its fisheries too. Some of the successful introductions into the lake are those of the Common carp, Cyprinus carpio, the largemouth bass, Micropterus salmoides, the Nile tilapia, O. niloticus and Louisiana red swamp crayfish, Procambarus clarkia. Aside from the fish species mentioned, some invasive plant species have also been introduced into these two lake ecosystems. Of notable success and impacts have been the water hyacinth, Eichhornia crassipes and Nile cabbage, Pistia stratiotes. These introductions have had both negative and positive impacts on the fisheries and the ecology of the two lakes. Some of the impacts have been predation on the native species by the introduced species like in the case of Nile perch and largemouth bass in Lake Victoria and Naivasha respectively. Competition for resources and hybridization with the native species has also been witnessed in the case of the tilapiines in the two lakes with undesirable results. Blockage of navigation routes caused by the invasive plants has been a major problem in the two lakes sometimes leading to massive postharvest losses by the fishermen. On the other hand, some introduced species have led to an increase in fish landings as well as utilization of the niches that were initially vacant within these ecosystems. It can therefore be concluded that introduced species often have more negative effects on the native species and therefore such introductions should be based on sound scientific research in order to minimize their effects within the new environments.

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Natural Concurrent Infections with Black Spot Disease and Multiple Bacteriosis in Farmed Nile Tilapia in Central Kenya

Veterinary Medicine International ◽

10.1155/2020/8821324 ◽

2020 ◽

Vol 2020 ◽

pp. 1-8

Author(s):

Daniel W. Wanja ◽

Paul G. Mbuthia ◽

Robert M. Waruiru ◽

Lilly C. Bebora ◽

Helena A. Ngowi

Keyword(s):

Nile Tilapia ◽

Micrococcus Luteus ◽

Experimental Studies ◽

Black Spot ◽

Pond Water ◽

Low Grade ◽

Spot Disease ◽

Concurrent Infections ◽

Related Stress ◽

Black Spot Disease

Nile tilapia (Oreochromis niloticus) is the most cultured and available fish for Kenyan consumers, and therefore, any tilapine disease deprives them the valuable source of protein. Nile tilapia farm was diagnosed with severe concurrent black spot disease and multiple bacteriosis using gross lesions and parasitological, histopathology, and standard bacteriological procedures. A total of 25 fish were sampled and inspected, and all of them had raised, macroscopic 1 mm-sized black spot lesions. The mean intensity of black spots per fish was 728 with an abundance of 2–1740 metacercariae cysts per fish. A high intensity of black spot infestation was observed in the fins (43.9%), skin and underlying muscles (18.3%), and gills (18%). In addition, histopathological data confirmed presence of a metacercaria of Neascus spp. as the aetiological agent of black spot disease. Furthermore, a thick fibrous capsule around the metacercaria, black pigment melanomacrophages, and moderate muscle atrophy were observed. The most prevalent bacteria isolated were Aeromonas, Enterobacter cloacae, Klebsiella pneumoniae, and Micrococcus luteus. Physicochemical parameters of pond water were temperature (28.2°C), dissolved oxygen (4.2 mgl−1), pH (8.5), ammonia free nitrogen (15.8 mgl−1), alkalinity (112 mgl−1), hardness (68 mgl−1), nitrites (0.058 mgl−1), nitrates (58 mgl−1), and phosphates (0.046 mgl−1). However, the levels of nitrates, nitrites, alkalinity, and ammonia free nitrogen exceeded the recommended limits. In conclusion, these findings suggest that coinfections by these organisms coupled by water quality-related stress can be associated with low-grade mortality observed in postfingerling tilapia as well as reduced growth. The authors recommended immediate destocking, thorough disinfection, and control of piscivorous birds. Moreover, attention ought to be geared towards prevention of parasitic infestations in fish so as to minimize fish deaths related to secondary bacteriosis. Further experimental studies should be carried out to elucidate the relationship of these pathogens.

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Comparison of the pathogenicity of Francisella orientalis in Nile tilapia ( Oreochromis niloticus ), Asian seabass ( Lates calcarifer ) and largemouth bass ( Micropterus salmoides ) through experimental intraperitoneal infection

Journal of Fish Diseases ◽

10.1111/jfd.13217 ◽

2020 ◽

Vol 43 (9) ◽

pp. 1097-1106

Author(s):

Sayuj Poudyal ◽

Theeraporn Pulpipat ◽

Pei‐Chi Wang ◽

Shih‐Chu Chen

Keyword(s):

Largemouth Bass ◽

Oreochromis Niloticus ◽

Nile Tilapia ◽

Micropterus Salmoides ◽

Lates Calcarifer ◽

Asian Seabass ◽

Nile Tilapia Oreochromis Niloticus ◽

Intraperitoneal Infection

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Connection between the Gut Microbiota of Largemouth Bass (Micropterus salmoides) and Microbiota of the Pond Culture Environment

Microorganisms ◽

10.3390/microorganisms9081770 ◽

2021 ◽

Vol 9 (8) ◽

pp. 1770 ◽

Cited By ~ 1

Author(s):

Qianfu Liu ◽

Zini Lai ◽

Yuan Gao ◽

Chao Wang ◽

Yanyi Zeng ◽

...

Keyword(s):

Gut Microbiota ◽

Largemouth Bass ◽

High Throughput Sequencing ◽

Southern China ◽

Micropterus Salmoides ◽

Bacterial Species ◽

Pond Water ◽

Fish Growth ◽

Rrna Gene ◽

Pond Culture

The vital role of the gut microbiota in fish growth, development, immunity, and health has been largely confirmed. However, the interaction between environmental microbiota and the gut microbiota of aquaculture species remains unclear. Therefore, we analyzed the gut microbiota of largemouth bass (Micropterus salmoides) collected from subtropical ponds in southern China, as well as the pond water and aquatic sediment microbiota, using high-throughput sequencing of the 16S rRNA gene. Our results demonstrated significant differences in the compositions of pond water, sediment, and the gut microbiota of largemouth bass. Moreover, these compositions changed throughout the culture period. Only approximately 1% of the bacterial species in the pond sediment and gut microbiota were exchanged. However, the bacterial proportion of the gut microbiota from pond water microbiota was approximately 7% in samples collected in June and August, which increased markedly to 73% in October. Similarly, the proportion of bacteria in the pond water microbiota from the gut microbiota was approximately 12% in June and August, which increased to 45% in October. The study findings provide basic information for understanding the interactions between environmental microbiota and the gut microbiota of cultured fish, which may contribute to improved pond culture practices for largemouth bass.

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Characterization of External Mucosal Microbiomes of Nile Tilapia and Grey Mullet Co-cultured in Semi-Intensive Pond Systems

Frontiers in Microbiology ◽

10.3389/fmicb.2021.773860 ◽

2021 ◽

Vol 12 ◽

Author(s):

Ahmed Elsheshtawy ◽

Benjamin Gregory James Clokie ◽

Amaya Albalat ◽

Allan Beveridge ◽

Ahmad Hamza ◽

...

Keyword(s):

Microbial Communities ◽

Bacterial Communities ◽

Nile Tilapia ◽

Pond Water ◽

Rrna Gene ◽

Grey Mullet ◽

Core Microbiome ◽

Bacterial Phyla ◽

Organ Specific

The external mucosal surfaces of the fish harbor complex microbial communities, which may play pivotal roles in the physiological, metabolic, and immunological status of the host. Currently, little is known about the composition and role of these communities, whether they are species and/or tissue specific and whether they reflect their surrounding environment. Co-culture of fish, a common practice in semi-intensive aquaculture, where different fish species cohabit in the same contained environment, is an easily accessible and informative model toward understanding such interactions. This study provides the first in-depth characterization of gill and skin microbiomes in co-cultured Nile tilapia (Oreochromis niloticus) and grey mullet (Mugil capito) in semi-intensive pond systems in Egypt using 16S rRNA gene-based amplicon sequencing. Results showed that the microbiome composition of the external surfaces of both species and pond water was dominated by the following bacterial phyla: Proteobacteria, Fusobacteriota, Firmicutes, Planctomycetota, Verrucomicrobiota, Bacteroidota, and Actinobacteriota. However, water microbial communities had the highest abundance and richness and significantly diverged from the external microbiome of both species; thus, the external autochthonous communities are not a passive reflection of their allochthonous communities. The autochthonous bacterial communities of the skin were distinct from those of the gill in both species, indicating that the external microbiome is likely organ specific. However, gill autochthonous communities were clearly species specific, whereas skin communities showed higher commonalities between both species. Core microbiome analysis identified the presence of shared core taxa between both species and pond water in addition to organ-specific taxa within and between the core community of each species. These core taxa included possibly beneficial genera such as Uncultured Pirellulaceae, Exiguobacterium, and Cetobacterium and opportunistic potential pathogens such as Aeromonas, Plesiomonas, and Vibrio. This study provides the first in-depth mapping of bacterial communities in this semi-intensive system that in turn provides a foundation for further studies toward enhancing the health and welfare of these cultured fish and ensuring sustainability.

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Assessment of phytoplankton species in gut and feces of cultured tilapia fish in Egyptian fishponds: Implications for feeding and bloom control

Acta Limnologica Brasiliensia ◽

10.1590/s2179-975x8418 ◽

2019 ◽

Vol 31 ◽

Cited By ~ 1

Author(s):

Zakaria Mohamed ◽

Zeinab Ahmed ◽

Asmaa Bakr

Keyword(s):

Oreochromis Niloticus ◽

Nile Tilapia ◽

Pond Water ◽

Gut Contents ◽

Natural Food ◽

Phytoplankton Species ◽

Phytoplankton Blooms ◽

Toxic Cyanobacteria ◽

Nile Tilapia Oreochromis Niloticus ◽

Bloom Control

Abstract Aim This study was carried out to determine which phytoplankton species, as a natural food, can be ingested and digested by Nile tilapia (Oreochromis niloticus L.). Methods During this study, phytoplankton in the gut contents of Nile tilapia collected from three fishponds in southern Egypt were investigated during the period Oct. 2012-Sep. 2013. Samples of tilapia fish were grown in aquarium containing filtered pond water to detect undigested phytoplankton species in the feces. Results The majority of the phytoplankton found in the gut of Nile tilapia was Cyanobacteria (36-50%) and Chlorophyta (27-38%). Other groups such Diatoms, Euglenophyta and Dinophyta were also found but with lower percentages (<19%). The most important and dominant phytoplankton species found in Tilapia gut were the potentially toxic cyanobacteria, Anabaena, Anabaenopsis, Cylindrospermopsis, Microcystis and Planktothrix. Only diatoms were recorded in the feces, indicating the ability of Tilapia to digest all phytoplankton except diatoms. Conclusions The data of this study could be useful for biomanipulation of nuisance phytoplankton blooms in eutrophic aquacultures.

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