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  • 1
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    Aquaculture Department, Southeast Asian Fisheries Development Center | Tigbauan, Iloilo, Philippines
    In:  http://aquaticcommons.org/id/eprint/26210 | 17342 | 2019-02-01 08:37:02 | 26210 | Southeast Asian Fisheries Development Center, Aquaculture Department
    Publication Date: 2021-07-24
    Description: Species extinction is a global issue that requires all nations to practice sustainable management. This paper aims to examine the status of endangered fisheries species in Malaysia, and highlight some resource management initiatives including the restocking and stock enhancement program in the country. Its scope covers only aquaculture-based species, which is in line with the Program on Stock Enhancement for Species of International Concern being implemented by the Southeast Asian Fisheries Development Center/Aquaculture Department in the Philippines.
    Keywords: Aquaculture ; Fisheries ; Species extinction ; Nature conservation ; Overfishing ; Rare species ; Threatened species ; Vulnerable species ; Stock assessment ; Stocks ; Depleted stocks ; Fishery resources ; Stocking (organisms) ; Resource management ; Fishery management ; Freshwater fish ; Brackishwater crustaceans ; Brackishwater fish ; Marine fish ; Marine molluscs ; Habitat ; Habitat improvement ; Marking ; Capture-recapture studies ; Tagging
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 109-115
    Format: 7
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  • 2
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    Aquaculture Department, Southeast Asian Fisheries Development Center | Tigbauan, Iloilo, Philippines
    In:  http://aquaticcommons.org/id/eprint/26206 | 17342 | 2019-02-08 06:36:11 | 26206 | Southeast Asian Fisheries Development Center, Aquaculture Department
    Publication Date: 2021-07-24
    Description: The Mekong giant catfish (Pangasianodon gigas Chevey, 1930) is one of the largest freshwater fish in the world, measuring up to 3 m in length and weighing in excess of 300 kg. It is endemic to the Mekong River Basin area. It is found in Tonle Sap Lake, Tonle Sap River, and the Mekong River. It is not known to occur in the upper 2,000 km of the Mekong River. The current extent of occurrence is estimated at around 4,150 km. Historical reports indicate that the species was abundant in the early 1900s with 40-50 fish caught yearly in Nong Khai Province, north-east Thailand. However, since that time the number of fish caught has declined. This paper discusses several important information about Mekong Giant Catfish, such as rarity and size, natural food, natural spawning season and spawning grounds, and age and size at first maturity. Moreover, the breeding program and the stock enhancement activities of the Thai Department of Fisheries were also presented in the paper.
    Keywords: Aquaculture ; Freshwater fish ; Freshwater aquaculture ; Inland fisheries ; Endemic species ; Stocks ; Depleted stocks ; Fishery resources ; Stock assessment ; Stocking (organisms) ; Breeding ; Tagging ; Population genetics ; Thailand ; Pangasianodon gigas
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 85-90
    Format: 6
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  • 3
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    Aquaculture Department, Southeast Asian Fisheries Development Center | Tigbauan, Iloilo, Philippines
    In:  http://aquaticcommons.org/id/eprint/26214 | 17342 | 2019-02-01 08:38:49 | 26214 | Southeast Asian Fisheries Development Center, Aquaculture Department
    Publication Date: 2021-07-24
    Description: World economic growth has led to considerable changes in the ecosystem in many places and has raised concerns on global resource management particularly aquatic animal resources and their living environment. In Vietnam, aquatic animal resources play an important role in the national economy and are one of the targets for economic development. However, under high population pressure, high demand for seafood has resulted in unfavorable living environment. Aquatic animal resource has been over-exploited and in some places reported to be declining; hence some species have become extinct or endangered. This paper provides a list some endangered freshwater, brackishwater, and marine species. Moreover, the seed production activities and the release strategies for resource conservation of the government of Vietnam are also presented.
    Keywords: Aquaculture ; Fisheries ; Rare species ; Habitat loss ; Species extinction ; Threatened species ; Vulnerable species ; Stock assessment ; Stocking (organisms) ; Stocks ; Freshwater fish ; Freshwater molluscs ; Freshwater organisms ; Marine fish ; Marine molluscs ; Marine organisms ; Brackishwater crustaceans ; Brackishwater fish ; Brackishwater molluscs ; Brackishwater organisms ; Resource conservation ; Resource depletion ; Rare resources ; Resource management
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 139-144
    Format: 6
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  • 4
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    Aquaculture Department, Southeast Asian Fisheries Development Center | Tigbauan, Iloilo, Philippines
    In:  http://aquaticcommons.org/id/eprint/26212 | 17342 | 2019-01-31 08:22:50 | 26212 | Southeast Asian Fisheries Development Center, Aquaculture Department
    Publication Date: 2021-07-24
    Description: The paper provides the lists of fisheries related species perceived to be extinct, rare, threatened and endangered as covered under the CITES, IUCN and the Bureau of Fisheries and Aquatic Resources (BFAR)-Fisheries Administrative Order (FAO) No. 208. The listings of freshwater fisheries resources constitute mostly finfishes that are all, except for one, found in the CITES list, the rest under the IUCN red lists and none in the BFAR list. Majority of the listed species are also specific to some areas like Lanao Lake, few in the RINCONADA lakes of Bicol and scarce in some other minor lakes where they are found to be endemic. Most of the indigenous cyprinid species are of commercial value to the locality and are the main source of fish protein in the daily life of the fisherfolk. The listings of marine finfishes constitute mostly sharks and seahorses which are all, except for one, found in the CITES list, the rest under the IUCN Red List and none in the BFAR-FAO list. Although BFAR listed 20 species of whales and dolphins under its FAO 208, marine mammals are not included in this report. Most of the indigenous shark species are becoming rare and extinct due to the rampant shark Status of Threatened Species and Stock Enhancement Activities in the Philippine Fisheries with the rising demand of shark fins smuggled or exported abroad. These marine finfishes are distributed in coastal waters. The listings of marine gastropods, mollusks, crustaceans and echinoderms are all found in the BFAR-FAO listings as Rare, Threatened and Endangered, while few and selective under the CITES and IUCN lists. Accordingly, these are the most common marine resource commodities that are over-exploited, gleaned and gathered illegally, and frequently exported or smuggled out of the country by unscrupulous traders.
    Keywords: Fisheries ; Rare species ; Rare resources ; Species extinction ; Threatened species ; Vulnerable species ; Overfishing ; Stock assessment ; Stocking (organisms) ; Stocks ; Freshwater crustaceans ; Freshwater fish ; Freshwater organisms ; Resource conservation ; Protected resources ; Marine parks ; Capture-recapture studies ; Policies ; Resource management ; Marine molluscs ; Marine organisms ; Marine fish ; Marine invertebrates ; Marine crustaceans ; Freshwater molluscs
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 121-130
    Format: 10
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  • 5
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    Aquaculture Department, Southeast Asian Fisheries Development Center | Tigbauan, Iloilo, Philippines
    In:  http://aquaticcommons.org/id/eprint/26213 | 17342 | 2019-02-01 08:38:06 | 26213 | Southeast Asian Fisheries Development Center, Aquaculture Department
    Publication Date: 2021-07-24
    Description: The paper provides a comprehensive list of endangered freshwater, brackishwater, and marine aquatic species in Thailand. The Thai Department of Fisheries is breeding some of the endangered species under the “Rehabilitation of Thai Local Fishes and Aquatic Animals Project.” Some of these species are bred for restocking in the wild.
    Keywords: Aquaculture ; Fisheries ; Resource conservation ; Resource management ; Habitat ; Habitat loss ; Rare species ; Nature conservation ; Protected resources ; Rare resources ; Threatened species ; Vulnerable species ; Freshwater crustaceans ; Freshwater fish ; Freshwater invertebrates ; Freshwater molluscs ; Freshwater organisms ; Marine organisms ; Marine fish ; Marine molluscs ; Marine crustaceans ; Brackishwater crustaceans ; Brackishwater fish ; Brackishwater molluscs ; Brackishwater organisms ; Stocks ; Depleted stocks ; Fishery resources ; Stock assessment
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 131-137
    Format: 7
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  • 6
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    In:  http://aquaticcommons.org/id/eprint/23685 | 18721 | 2018-07-18 06:54:47 | 23685 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-15
    Description: Concentration of copper (Cu) and zinc (Zn) in liver and muscle tissues of Kutum (Rutilus frisii kutum) of the Caspian Sea was assessed to study possible correlation of length and weight and the bioaccumulation of these heavy metals in the fish. Concentration of the metals in liver was higher than muscle (Zn: 55.2, Cu: 41.5 kg/g) while the concentrations in the muscle tissue were lower than permissible limits proposed by FAO. Significant correlations were not detected between mean Zn and cu concentration and fish size. Finally, no significant difference was found in the concentration of the heavy metals in male and female fish specimens (P〉0.05).
    Keywords: Fisheries ; Pollution ; Length-weight relationships ; Bioaccumulation ; Fish physiology ; Heavy metals ; Zinc ; Muscles ; Liver ; Copper ; Freshwater fish ; Correlation analysis ; Rutilus frisii ; Brackish ; Caspian Sea ; Caspian Sea Eurasia ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 121-128
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  • 7
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    In:  http://aquaticcommons.org/id/eprint/23690 | 18721 | 2018-07-18 07:20:16 | 23690 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-15
    Description: The Guilan province in the north of Iran has witnessed a rapid industrial development in recent years causing pollution of water resources in rivers, wetlands and the Caspian Sea coastal areas. We studied the acute toxicity of Copper and Lead in kutum fingerlings through acute toxicity and M.A.C value determination in summer and autumn 2006. A total of 21 aquariums with a capacity of 30 liters each stocked with 10 fingerlings were used in our experiments with the two metals. Six aquaria and six concentrations of Cu and Pb composed the 18 treatments while 3 other aquaria were used as control. For each treatment, three replications were conducted. The relevant physical and chemical parameters of water during the experiments were measured including pH which was in the range 7-7.5, DH=200-250mg/l (CaCO _3), DO= 80% and temperature which was recorded as 24 plus or minus 1°C. Fish investigations were conducted in 24 hour intervals. The results indicated that the lethal concentration (LC sub(50)96h) for Copper and Lead are 1.92mg/l and 252.12mg/l respectively and M.A.C. value for Copper and Lead are 0.192mg/l and 25.212mg/l respectively in the Caspian Sea kutum. Hence, we conclude that Copper is more toxic than Lead for the fish.
    Keywords: Biology ; Pollution ; Bioaccumulation ; Lethal effects ; Lethal limits ; Replication ; Heavy metals ; Fingerlings ; Water resources ; Toxicity ; Copper ; Freshwater fish ; Lead ; Wetlands ; Rutilus frisii ; Brackish ; Caspian Sea ; ISW ; Caspian Sea Eurasia ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 169-174
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  • 8
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    In:  http://aquaticcommons.org/id/eprint/23671 | 18721 | 2018-07-16 17:19:35 | 23671 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-15
    Description: Physiological changes in cortisol, glucose, testosterone and 17b-estradiol levels were studied in Rutilus frisii kutum spawners during transportation in April, 2006. The fish were held in plastic tanks in two treatments 1fish/2L and 1fish/1L sea water in several replications. Their blood was collected at 0, 10, 20, 30 and 60 min after capture. A significant increase in concentration of cortisol and glucose was found with the transport time. Initial levels of cortisol were similar in the two treatments ranging between 480.7±22.34 and 476.6±18.61 ng/ml respectively.
    Keywords: Biology ; Biological stress ; Transportation ; Replication ; Fish physiology ; Spawning populations ; Freshwater fish ; Hormones ; Sex hormones ; Glucose ; Rutilus frisii ; Brackish ; Caspian Sea ; Caspian Sea Eurasia ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 147-154
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  • 9
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    In:  http://aquaticcommons.org/id/eprint/23732 | 18721 | 2018-07-21 03:49:41 | 23732 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-15
    Description: To assess the effects of two flooding events occurred in the years 2001 and 2002, fish distribution, diversity and abundance in Madarsoo River of the Golestan National Park were studied and compared to that of the years before the events. A total of five fish species from four sites were collected. Assemblage of fish population showed changes in their overall relative abundance and distribution across sampling sites and times. We estimated the abundance of Capoeta capoeta gracilis at 2.331:2.6, Alburnoides bipunctatus at 0.17±0.15, Paracobitis malapterura at 0.0474±0.031 and Leuciscus cephalus at 0.005±0.01 fish per square meter of the stream. The abundance of Cc.gracilis showed significant increase while that of the A. bipunctatus did not undergo such significant change in comparison with the data from the years before flooding events (P〈0.01). The Shannon diversity index was significantly different between sites and with the increase in the number of riffles and pools in the river, the index and population size of the fish species showed an upward trend. Three fish species Oncorhynchus mykiss, Neogobius melanostomus affinis and Neogobius fluviafilis which were abundant before the floods did not show up in the samples at all. Also, of the Barbus mursa, only one specimen was caught. Canonical correspondence analysis (CCA) results suggest that two species C. c. gracilis and P. malapterura are more resistant against changes in environmental conditions.
    Keywords: Biology ; Ecology ; Abundance ; Species diversity ; Distribution ; Freshwater fish ; Fish ; Fish Populations ; Freshwater ; Salmon ; Rivers ; National Parks ; Floods ; Flooding ; Sampling ; Streams ; Capoeta capoeta gracilis ; Paracobitis malapterura ; Leuciscus cephalus ; Neogobius melanostomus affinis ; Alburnoides bipunctatus ; Neogobius fluviatilis ; Golestan Province ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 65-76
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  • 10
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    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24170 | 19325 | 2018-05-13 18:50:52 | 24170 | Fisheries Society of Nigeria
    Publication Date: 2021-07-15
    Description: A number of 60 Juveniles of Oreochromis niloticus were stocked and divided into two plastic ponds of 0.90m by 0.60 in dimension respectively with initial total weight of 120g.The juveniles were two months and half old as at the time of collection and they were fed with 4mm of the feeds. Each pond contains thirty Oreochomis niloticus which were fed with local feeds, and coppens feed. After weighing the fishes in the two ponds, there was significant difference in the average weight and length, in which the pond that was fed with coppens has the highest average weight and length of 140g and 15.62cm respectively. The quality of the water was checked by measuring pH, dissolved oxygen and temperature of the water using water aquaculture kit. Model: FF-1 A.CAT No. 2430-0. The mortality rate was 0%, while the survivability rate was 100%.
    Description: Includes: 2 tables.;Also includes: 5 references.
    Keywords: Aquaculture ; Ecology ; Oreochromis niloticus ; Nigeria ; Lagos ; freshwater environment ; Feed ; Freshwater fish ; Growth rate ; Length-weight relationships ; Pond culture ; Water quality ; Artificial feeding ; Feeding experiments ; Fish culture ; Survival ; Mortality
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 78-79
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