Morphological trophic variation of the cyprinid Megalobrama pellegrini (Tchang, 1930) with different keratinized beaks from upper reaches of the Yangtze River, China

Zhi, Zhang; Yu, Dan; Zhai, Dongdong; Liu, Fei; Liu, Huanzhang

doi:10.1007/s10641-019-00937-9

Cited by 5 publications

(4 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…M . pellegrini dwells in the middle and upper reaches of the Yangtze River and has a unique upper jaw and upper orbital bone shape [ 6 ]. Although previous studies have reported biological differences between Megalobrama species, the phylogenetic relationships among M. amblycephala , M. skolkovii , M. hoffmanni , and M. pellegrini remain unknown [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…M. skolkovii and M. pellegrini are omnivorous as well, however, they primarily feed on aquatic plants [ 10 ]. Importantly, in M. pellegrini , the development of the upper and lower jaws as well as the thickening of the stratum corneum have strengthened the scraping function, making it more conducive to feeding on stationary organisms [ 6 ]. M. amblycephala lives in aquatic plant-rich lakes and its diet consists primarily of aquatic plants, emergent plants, floating-leaf plants, and submerged plants.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Population Genomics of Megalobrama Provides Insights into Evolutionary History and Dietary Adaptation

Chen

Liu

Gooneratne

et al. 2022

Biology

View full text Add to dashboard Cite

Megalobrama, a genus of cyprinid fish, is an economically important freshwater fish widely distributed in major waters of China. Here, we report the genome resequencing of 180 Megalobrama fish including M. amblycephala, M. skolkovii, M. hoffmanni, and M. pellegrini. Population structure indicated that geographically divergent Megalobrama populations were separated into six subgroups. A phylogenetic tree showed that M. skolkovii was more closely related to M. pellegrini than other species and M. hoffmanni was clustered apart from other Megalobrama species, showing a high nucleotide diversity in geographic groups. Treemix validated gene flow from M. amblycephala to M. skolkovii, suggesting that introgression may provide an important source of genetic variation in the M. skolkovii populations. According to the demographic history analysis, it is speculated that Megalobrama might have been originally distributed in the Pearl River with some spread to Hainan Island and northern China due to lower sea levels during the glacial period. Whole-genome selective sweeps analysis demonstrated that M. amblycephala likely developed an enhanced energy metabolism mostly through fatty acid degradation pathways whereas M. hoffmanni possibly regulate lipid absorption via the cholesterol metabolism pathway. Taken together, this study provides a valuable genomic resource for future genetic investigations aiming to improve genome-assisted breeding of Megalobrama species.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Population Genomics of Megalobrama Provides Insights into Evolutionary History and Dietary Adaptation

Chen

Liu

Gooneratne

et al. 2022

Biology

View full text Add to dashboard Cite

show abstract

“…M. hoffmanni has pigment deposits on the scale base that form dark spots on its body surface and exists mostly in the Pearl River and Hainan Island [5]. M. pellegrini dwells in the middle and upper reaches of the Yangtze River and has a unique upper jaw and upper orbital bone shape [6]. Although previous studies have reported biological differences between Megalobrama species, the phylogenetic relationships among M. amblycephala, M. skolkovii, M. hoffmanni, and M. pellegrini remain unknown [7,8].…”

Section: Introductionmentioning

confidence: 99%

Population genomics of Megalobrama provides insights into evolutionary history and dietary adaptation

Chen

Liu

Gooneratne

et al. 2022

Preprint

View full text Add to dashboard Cite

Megalobrama, a genus of cyprinid fish, is an important freshwater economic fish widely distributed in major waters of China. Here, we report the genome resequencing of 180 Megalobrama fish including M. amblycephala, M. skolkovii, M. hoffmanni and M. pellegrini. The results indicated that different geographical Megalobrama populations were separated into six subgroups and M. skolkovii was more closely related to M. pellegrini than other species. Megalobrama was originally distributed in the Pearl River, some spread to Hainan Island due to sea-level fall during the glacial period and others spread to northern China. The introgression provided an important genetic variation source of M. skolkovii populations. M. amblycephala enhanced energy metabolism mainly through fatty acid degradation pathways, while M. skolkovii used cholesterol metabolism pathway to regulate lipid absorption. Taken together, our results provide a valuable genomic resource for future genetic studies to improve genome-assisted breeding of Megalobrama species.

show abstract

“…A recent report indicated that M . pellegrini is omnivorous, with algae and mussels as the primary two food resources (Zhang et al 2020). Moreover, Qu et al (2020) determined that a feeding rate of 6.5% of body weight/d and a feeding frequency of 2 meals/d constituted the optimum feeding strategy for raising this species under laboratory conditions.…”

mentioning

confidence: 99%

Influence of Stocking Density on Growth Performance, Intestinal Antioxidant Status, and Immune‐Related Gene Expression of Endangered Megalobrama pellegrini Reared in a Flow‐Through System

et al. 2021

View full text Add to dashboard Cite

A 42-d feeding trial was conducted to evaluate the effects of stocking density on the growth and health status of juvenile Megalobrama pellegrini. Fish (initial body weight = 0.45 AE 0.01 g) were reared in a flow-through system under five stocking densities: 0.15, 0.24, 0.34, 0.42, and 0.50 kg/m 3 . Significantly lower growth performance (weight gain and specific growth rate) and a higher feed conversion ratio were recorded in fish reared at the highest stocking density (0.50 kg/m 3 ). Similarly, intestinal oxidative stress analyses indicated that activities of the antioxidant enzymes superoxide dismutase and catalase were reduced in M. pellegrini reared at the highest stocking density; the highest malondialdehyde content was also recorded in this group. In addition, intestinal glutathione content was significantly increased in higher-density groups compared with the lowest density group (0.15 kg/m 3 ), and the highest value appeared in the 0.34-kg/m 3 group. Intestinal CYP1A* (cytochrome P450 family 1 subfamily A gene) expression was significantly lower in the 0.15-kg/m 3 group than in the 0.42-kg/m 3 group. Furthermore, the 0.50-kg/m 3 group had significantly higher gene expression of Nrf2* (nuclear factor [erythroid-derived 2]-like 2), NF-κB* (nuclear factor kappa beta), and MyD88* (myeloid differentiation factor 88) than the lower-density groups. This study indicated that 0.45-1.36-g M. pellegrini could be cultured at a density of 0.34 kg/m 3 for maximum growth in a flow-through system without negative effects on the measured physiological indicators of stress and immunity.

show abstract

Morphological trophic variation of the cyprinid Megalobrama pellegrini (Tchang, 1930) with different keratinized beaks from upper reaches of the Yangtze River, China

Cited by 5 publications

References 52 publications

Population Genomics of Megalobrama Provides Insights into Evolutionary History and Dietary Adaptation

Population Genomics of Megalobrama Provides Insights into Evolutionary History and Dietary Adaptation

Population genomics of Megalobrama provides insights into evolutionary history and dietary adaptation

Influence of Stocking Density on Growth Performance, Intestinal Antioxidant Status, and Immune‐Related Gene Expression of Endangered Megalobrama pellegrini Reared in a Flow‐Through System

Contact Info

Product

Resources

About