Monthly Change of the Length-weight Relationship of the Loach (&lt;i&gt;Misgurnus anguillicaudatus&lt;/i&gt;) Population in Paddy Fields by Farming Practices

Shin, Hyun-Seon; Song, Young‐Ju; Kwon, Soonik; Eo, Jinu; Lee, Seung–Hyun; Kim, Myung‐Hyun

doi:10.11626/kjeb.2018.36.1.001

Cited by 6 publications

(4 citation statements)

References 12 publications

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“…The levees in the conventional fields presented an open shape, in which shorebirds were more abundant, probably because they have a habit of foraging or resting in open environments 41 , 42 . Herons used the paddies, levees, and roads of the eco-friendly fields more than those of the conventional fields, because eco-friendly fields provided a higher abundance of potential food sources than the conventional fields 39 , 44 . Moreover, herons rarely used the ditch microhabitat because many of the ditches were concrete-lined, resulting in reduced food availability, which made them less attractive to herons than other microhabitats 6 , 18 , 19 .…”

Section: Discussionmentioning

confidence: 99%

Effect of different management techniques on bird taxonomic groups on rice fields in the Republic of Korea

Choi

Seock

Son³

et al. 2021

Sci Rep

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Many bird species rely on the ecological functions of rice field habitats (e.g., paddy, levee, road, and ditch). However, recent intensive practices are causing rice fields to provide fewer suitable habitats. This study examined bird habitat usage and how it is affected by cultivation methods (e.g., eco-friendly vs conventional fields). Eco-friendly and conventional rice fields in the midwestern region of the Republic of Korea were surveyed from January 2014 to December 2016, and the species presence, number of birds, and locations of observed habitats were recorded. It was found that shorebirds and herons used more eco-friendly rice paddies with lower or no pesticide and/or herbicide use, while waterfowl used paddy habitats more than the other habitats, regardless of the amounts of pesticides and/or herbicides used. Land birds used ditches or roads in conventional rice fields more than those in fields that used pesticides and/or herbicides. Pesticide and/or herbicide use affected bird taxonomic groups differently. Consequently, the use of habitats by different bird taxonomic groups varied depending on the crop cultivation as well as the cultivation methods. These results provided valuable information for managing rice fields, which serve as habitats for birds.

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Section: Discussionmentioning

confidence: 99%

Effect of different management techniques on bird taxonomic groups on rice fields in the Republic of Korea

Choi

Seock

Son³

et al. 2021

Sci Rep

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show abstract

“…Herons used the paddy, levee, and road habitats in the eco-friendly elds more than the habitats in the conventional elds. These habitats provided more abundant potential food sources for the herons than the conventional habitats [36,41]. Moreover, herons rarely used the ditch habitat because it was narrow and low in height, making it di cult for herons to access compared to other habitats [17,18].…”

Section: Discussionmentioning

confidence: 99%

Effect of Different Management Techniques on Bird Assemblages on Rice Fields in the Republic of Korea

Choi

Son

et al. 2021

Preprint

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Many bird species rely on the ecological functions of rice field microhabitats. However, recent intensive practices are causing rice fields to provide fewer suitable habitats. This study examined bird microhabitat usage and the effects of intensive use of chemical substances on it. Eco-friendly and conventional rice fields were surveyed from January 2014 to December 2016, and the species presence, the number of birds, and the location of observed microhabitats were recorded. It was found that shorebirds and herons used more eco-friendly rice paddies with fewer or no chemical substances, while waterfowl used the paddy microhabitat more than the other microhabitats, regardless of the amount of chemical substances used. It was confirmed that land birds used ditches or roads in conventional rice fields more than those in fields that used chemical substances. Chemical substances affected bird assemblages differently. Consequently, bird assemblages used habitats differently depending on the farm crop cultivation as well as food abundance. These results provided valuable information useful for managing rice fields that serve as habitats for birds.

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“…In South Korea, the majority of the demand for loach is met by importing it from other countries, and most of the morphologically similar related species, Chinese loach (M. mizolepis), is imported [3,4]. M. mizolepis can hybridize with M. anguilicaudatus, and native resources are at risk due to genetic contamination caused by individuals introduced into the drainage system [5][6][7]. Therefore, in South Korea, aquaculture research is actively being conducted to increase loach production, and aquaculture methods using release and recapture using outdoor fields have been popularized [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…1 IBW: initial body weight, 2 FBW: final body weight, 3 ITW: initial total weight, 4 FTW: final total weight, 5 ITL: initial total length,6 FTL: final total length,7 WGR: weight gain rate, 8 SGR: specific growth rate,9 FCR: feed conversion ratio, 10 SR: survival rate. † FP, aquaponics system integrating biofloc technology (BFT) known as FLOCponics; ‡…”

mentioning

confidence: 99%

Enhancing Indoor Culture of Weather Loach (Misgurnus anguillicaudatus) and Caipira Lettuce (Lactuca sativa) in a Decoupled FLOCponics System

Park,

Hwang,

Choe

et al. 2024

Fishes

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Interest in aquaponics (AP) is increasing due to its ability to minimize sewage and maximize feed efficiency in fish farming. However, owing to limitations of intensive cultures and a lack of nutrients such as NO3 for growing crops, AP requires the use of artificial nutrients. Therefore, novel approaches are required to develop AP-intensive culturing methods. An AP system based on biofloc technology (BFT) called FLOCponics (FP) has been recommended. Here, the productivity of the weather loach (Misgurnus anguillicaudatus) in the FP system, BFT system, and flow-through systems (FTSs), as well as these systems’ effect on Caipira lettuce (Lactuca sativa) growth, was analyzed. To compare crop productivity, a hydroponic (HP) bed was installed. The growth rate of M. anguillicaudatus showed significant differences, at 51.1 ± 3.69% in the FP system, followed by 24.0 ± 4.16% in the BFT system and −14.3 ± 1.4% in the FTS. Its survival rates were better in the FP system (91.1 ± 2.64%) than in the BFT system (82.1 ± 10.98%) or the FTS (66.8 ± 2.75%) (p < 0.05). Total ammonia nitrogen and NO2−-N concentrations were stabilized in every plot during the experimental period. However, the NO3−-N concentration continuously increased in the BFT system but decreased in the FP system and was maintained. The shoot weight of the Caipira lettuce was 163.6 ± 8.65 g in the FP system and 149.6 ± 9.05 g in the HP system. In conclusion, FP system can provide a large amount of nutrients and improve the growth performance of both fish and crops in the FP system.

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Monthly Change of the Length-weight Relationship of the Loach (<i>Misgurnus anguillicaudatus</i>) Population in Paddy Fields by Farming Practices

Cited by 6 publications

References 12 publications

Effect of different management techniques on bird taxonomic groups on rice fields in the Republic of Korea

Effect of different management techniques on bird taxonomic groups on rice fields in the Republic of Korea

Effect of Different Management Techniques on Bird Assemblages on Rice Fields in the Republic of Korea

Enhancing Indoor Culture of Weather Loach (Misgurnus anguillicaudatus) and Caipira Lettuce (Lactuca sativa) in a Decoupled FLOCponics System

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