A Bayesian hierarchical meta-analysis of fish growth: with an example for North American largemouth bass, Micropterus salmoides

2004 ◽  
Vol 178 (3-4) ◽  
pp. 399-416 ◽  
Author(s):  
Thomas E Helser ◽  
Han-Lin Lai
2020 ◽  
Vol 7 ◽  
Author(s):  
Wenqiang Wang ◽  
Yujue Xu ◽  
Shuyan Chi ◽  
Peng Yang ◽  
Kangsen Mai ◽  
...  

Lysine is known to be a functional nutrient from yeast to human beings. However, the mechanisms for lysine to regulate body growth and metabolism in fish species are far from fully illuminated. In order to elucidate the molecular effects of lysine on growth performance and metabolism, largemouth bass (Micropterus salmoides), which is extremely sensitive to protein composition, was chosen as the experimental model. Juvenile largemouth bass (4.16 ± 0.02 g) were fed with the lysine control diet (LC diet), the lysine supplementation diet (LS diet), and the low lysine diet (LL diet) for 8 weeks. The results showed that the LS diet group significantly increased fish growth, feed efficiency, and nutrient retention compared with those of the LL diet group in largemouth bass. Moreover, compared to the LL diet, lysine supplementation also elevated the plasma total protein, total EAA, total AA, and some individual AA concentrations. Mechanistically, lysine supplementation had a significant effect to decrease the mRNA expression levels of peptide and AA transporters induced by lysine restriction. Lysine supplementation also had an important impact on regulating the target of rapamycin (TOR) signaling pathway. More importantly, the key regulators in the amino acid response (AAR) signaling pathway were also down-regulated by lysine supplementation. Our results provide a clear elucidation of how dietary lysine affected growth performance, physiological and biochemical responses, and signaling responses and represent a sound foundation for using lysine to improve the nutrient utilization of poultry by-product meal in largemouth bass.


2021 ◽  
Vol 9 (8) ◽  
pp. 1770 ◽  
Author(s):  
Qianfu Liu ◽  
Zini Lai ◽  
Yuan Gao ◽  
Chao Wang ◽  
Yanyi Zeng ◽  
...  

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.


2012 ◽  
Vol 69 (2) ◽  
pp. 224-230 ◽  
Author(s):  
Timothy J. Cline ◽  
Brian C. Weidel ◽  
James F. Kitchell ◽  
James R. Hodgson

Catch-and-release angling is gaining popularity worldwide and plays an increasingly important role in both fisheries management and conservation. Mortality from catch-and-release angling is well documented across species, but the sublethal effects have not been evaluated in a natural setting. Laboratory studies have yielded mixed results regarding catch-and-release impacts on fish growth. These studies do not adequately capture the scales of stress and variability of a natural system. We used a 27-year mark–recapture study of 1050 individually tagged largemouth bass (Micropterus salmoides) to determine the effects of catch-and-release angling on the growth in a natural setting. Individual bass were angled one to six times per season. Recapture intervals ranged from 1 to 98 days. Largemouth bass exhibited a post-release period (~6 days) of weight loss. Following this weight loss, we observed a subsequent period of compensatory growth facilitating recovery to normal weight. We found that catch-and-release angling had little impact on the overall seasonal growth patterns of largemouth bass and therefore should have limited adverse effects on growth-dependent ecological functions.


2013 ◽  
Vol 18 (3) ◽  
pp. 654-659 ◽  
Author(s):  
Dongmei MA ◽  
Guocheng DEND ◽  
Junjie BAI ◽  
Shengjie LI ◽  
Xiaoyan JIANG ◽  
...  

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