Investigation of a mark-recapture method of black porgy, 
            <i>Acanthopagrus schlegelii</i> , in Daya Bay using plastic oval tags

Liu, Yan; Yang, Changping; Shan, Binbin; Sun, Donglin; Liu, Shengnan; Li, Teng; Liu, Manting; Xie, Qijian

doi:10.3724/sp.j.1118.2019.18252

Cited by 4 publications

(10 citation statements)

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“…In this study, we released black sea bream juveniles with body lengths of 30 mm into Daya Bay and recaptured three batches in two years. The contribution rates of each batch ranged from 0% to 2.5%, and the total contribution rate of the stock enhancement was 1.18%, which was relatively small compared with other recapture investigations of black sea bream [20,21,23,39]. For example, a former recapture investigation of black sea bream in Daya Bay using plastic oval tags reported that the recapture rates of three batches varied between 2.49% and 7.76% within seven months after releasing juveniles with 50-95 mm body lengths [23].…”

Section: The Contribution Rate Of the Stock Enhancementmentioning

confidence: 62%

“…The contribution rates of each batch ranged from 0% to 2.5%, and the total contribution rate of the stock enhancement was 1.18%, which was relatively small compared with other recapture investigations of black sea bream [20,21,23,39]. For example, a former recapture investigation of black sea bream in Daya Bay using plastic oval tags reported that the recapture rates of three batches varied between 2.49% and 7.76% within seven months after releasing juveniles with 50-95 mm body lengths [23]. Because of a shorter recapture timescale and larger body size of juveniles, the mortality rate of released black sea bream decreased, and therefore the contribution rate rose.…”

Section: The Contribution Rate Of the Stock Enhancementmentioning

confidence: 62%

“…According to the observation, black sea breams are opportunistic feeders that prey on crustaceans, shellfish and seaweeds, and they prefer to move around rather than stay at a restricted site if there is a short supply of food [17]. A release-recapture experiment in Daya Bay showed that black sea bream spread radially along the inner and outer directions of the bay after release, and the farthest distance was about 70 km, indicating that black sea bream may be of strong locomotion ability [18]. With great commercial and recreational importance, it has been overfished over the past few decades, as evidenced by decreasing catches and declining sizes at sale [19].…”

Section: Introductionmentioning

confidence: 99%

“…With great commercial and recreational importance, it has been overfished over the past few decades, as evidenced by decreasing catches and declining sizes at sale [19]. As a result, stock enhancements have been implemented in several regions, including Japan [20,21], Korea [22] and China [16,23]. Genetic evaluation studies of black sea bream stock enhancement in Japan suggested that it was necessary to routinely monitor the genetic effects of stock enhancement since they found potential harmful effects on the genetic composition of the wild population [20].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Genetic Evaluation of Black Sea Bream (Acanthopagrus schlegelii) Stock Enhancement in the South China Sea Based on Microsatellite DNA Markers

Wang

Weng

Yang

et al. 2021

Fishes

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This is the first genetic evaluation of hatchery-based stock enhancement of black sea bream (Acanthopagrus schlegelii) in the South China Sea after a two-year monitoring period. In this study, microsatellite DNA markers were used to calculate the contribution rate and analyze genetic changes before and after stock enhancement. Two out of one hundred and sixty nine individuals from three recaptured populations were assigned to broodstock with a contribution rate of 1.18%, revealing that the hatchery-released juvenile fish could survive in the natural environment and had a positive effect on population replenishment in wild black sea bream abundance. However, we found that the release population had the lowest genetic diversity and significant genetic differentiation from other populations. In addition, genetic diversity detected in the recaptured population was lower than that in the wild population, and their genetic differentiation reached a significant level. Our results suggested that releasing cultured black sea bream juveniles with low genetic quality might be genetically harmful for the maintenance of wild genotypes. Therefore, it is necessary to assess the genetic variation of the hatchery population before implementing a stock enhancement and establish a long-term evaluation for monitoring the genetic effect caused by releasing this fish species.

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Section: The Contribution Rate Of the Stock Enhancementmentioning

confidence: 62%

Section: The Contribution Rate Of the Stock Enhancementmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Genetic Evaluation of Black Sea Bream (Acanthopagrus schlegelii) Stock Enhancement in the South China Sea Based on Microsatellite DNA Markers

Wang

Weng

Yang

et al. 2021

Fishes

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“…A sharp decrease in sparid catches has prompted the stocking of black seabream in Chinese waters (Guo et al, 2021), with the quantity reaching 70.15 million individuals in 2017 (Ministry of Agriculture and Rural Affairs of the People's Republic of China et al, 2018), accounting for 0.27% of the annual total quantities of China (Tang, 2019). Previous studies have reported on the capture-recapture analyses of black seabream in Daya bay, northern South China Sea (SCS) (Lin et al, 2001;Liu et al, 2019). However, the growth potential of released juvenile fish and their contributions to population recruitment are largely unknown.…”

Section: Introductionmentioning

confidence: 99%

Optimization of a Marine Fish Release Strategy: A Case Study of Black Sea Bream Acanthopagrus schlegelii in the Zhanjiang Estuary, Northern South China Sea

Shenzeng

Lin

Wang

2021

Front. Environ. Sci.

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The release strategy (choice of the species and locations stocked, releasing mode, and stocking size and times) is an important part of quantitative evaluations of marine fish stock enhancement, while optimization of the release strategy can contribute to assess the stocking success intended to alleviate declining fishery resources and to increase the income of fishers. In this study, a typical fish species released in the northern South China Sea, black sea bream Acanthopagrus schlegelii, was taken as the research object. The biological characteristics of this sparid were determined from samples collected from waters in the Zhanjiang estuary during June, July, and September 2020 to April 2021, and the data were applied to estimate its length frequency and its growth parameters using the ELEFAN I run in FiSAT II. We then simulated and evaluated the stocking effects of five scenarios under different release strategies, while assuming a fixed total quantity of released fish and a constant of mortality rate at different life stages. The results showed that (1) the breeding season of black sea bream in this region is mainly from December to March of the next year, which is also the period when most significant sexual reversal in this species occurs, and (2) the relationship between standard length and weight in black sea bream is W = 5.092 × 10–5L2.906, L∞ = 54.39 cm, K = 0.15, and t0 = −0.967. (3) The recommended period to release black sea bream in Zhanjiang waters is from June to October. It appears more productive if the total quantity of fish released can be divided into two batches. The growth potential of released juvenile fish in this study was evaluated based on a density-dependent theory, and the stocking effect of released stocks was simulated with the consideration for biological parameters and field sampling technique. This study provides a reference for the optimization of fish release strategies in coastal waters.

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Initial Post-Release Performance of Cultured Cyprinus chilia Juveniles in a Shallow Lake in Southwestern China

Zhu,

Yang,

Gong

et al. 2023

Animals

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The post-release performance of cultured fish is crucial for understanding the viability of cultured fish and assessing the effects of stock enhancement programs. This study aimed to investigate the initial post-release performance of cultured Cyprinus chilia juveniles by examining their movement, spatial distribution, gut fullness, and gut microbiota in nature. In July 2022, a total of 20,000 C. chilia juveniles, tagged with visible implant fluorescence (VIE), were released into Qilu Lake, a shallow lake in southwestern China. Subsequently, continuous recapture was conducted at fixed recapture sites using trap nets during the first 7 days, one month and three months after release. Out of the released fish, 512 were recaptured, resulting in a recapture rate of 2.56%. The recaptured fish had a 100% tag retention rate. The majority (98.05%) of the recaptured fish were found in the recapture sites located on the eastern or western lakeshore, while only 10 fish were recaptured from the recapture sites in the northern lake area. The water depth range where the recaptured fish were found ranged from 190 to 350 cm, with most fish preferring depths less than 300 cm. The majority of the released fish migrated towards the eastern and western lakeshore, with long-distance movement (greater than 100 m) primarily occurring within the first four days after release. The level of gut fullness in the released fish initially decreased and then increased over time following release. Regarding gut microbiota, the dominant phyla observed in most samples were Firmicutes, Proteobacteria, Cyanobacteria, and Fusobacteria. Furthermore, significant variations in the dominant genera were observed across different samples. Principal coordinates analysis (PCoA) revealed clear separation between the microbial communities of pre-release and post-release C. chilia juveniles. This study demonstrated that VIE tagging was a suitable method for short-term marking of C. chilia juveniles. Lakeshores with water depths less than 300 cm were identified as preferred habitats for C. chilia juveniles. The primary adaptation period for cultured C. chilia juveniles released into the natural environment was found to be approximately 4–5 days. These findings contribute to our understanding of the post-release performance of cultured fish and may provide guidance for the management and evaluation of relevant stock enhancement programs.

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Investigation of a mark-recapture method of black porgy, Acanthopagrus schlegelii , in Daya Bay using plastic oval tags

Cited by 4 publications

References 0 publications

Genetic Evaluation of Black Sea Bream (Acanthopagrus schlegelii) Stock Enhancement in the South China Sea Based on Microsatellite DNA Markers

Genetic Evaluation of Black Sea Bream (Acanthopagrus schlegelii) Stock Enhancement in the South China Sea Based on Microsatellite DNA Markers

Optimization of a Marine Fish Release Strategy: A Case Study of Black Sea Bream Acanthopagrus schlegelii in the Zhanjiang Estuary, Northern South China Sea

Initial Post-Release Performance of Cultured Cyprinus chilia Juveniles in a Shallow Lake in Southwestern China

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