Morphological and molecular biological characterization of the Yongzhang golden turtle, a new strain of Pelodiscus sinensis

Wang, Yaguang; Ju, Zhang; Liu, Wenting; Zhang, Na; Zhang, Zhao; YaoHong, Zhang; Guan, Yueqiang

doi:10.1016/j.aquaculture.2021.737536

Cited by 3 publications

(3 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the wild, these softshell turtles display a dark green coloration that appears to be cryptic and not ornamental. Wild Chinese softshell turtles deposit modest levels of yellow carotenoids as part of the production of their green coloration (Wang et al ., 2022). Through 16 years of intense artificial selection for greater carotenoid content of tissues, agricultural researchers have transformed these drab turtles into brilliantly ornamented animals.…”

Section: Condition Dependency In Novel Traitsmentioning

confidence: 99%

“…Through 16 years of intense artificial selection for greater carotenoid content of tissues, agricultural researchers have transformed these drab turtles into brilliantly ornamented animals. Yongzhang golden turtles have bright yellow coloration across their entire surface integument (Wang et al ., 2022), which makes the turtle bright and conspicuous in a pond environment. Thus, a conspicuous colour ornamentation has evolved through intense artificial selection in only 16 generations.…”

Section: Condition Dependency In Novel Traitsmentioning

confidence: 99%

See 1 more Smart Citation

Carotenoid ornaments and the spandrels of physiology: a critique of theory to explain condition dependency

2023

View full text Add to dashboard Cite

Even as numerous studies have documented that the red and yellow coloration resulting from the deposition of carotenoids serves as an honest signal of condition, the evolution of condition dependency is contentious. The resource trade‐off hypothesis proposes that condition‐dependent honest signalling relies on a trade‐off of resources between ornamental display and body maintenance. By this model, condition dependency can evolve through selection for a re‐allocation of resources to promote ornament expression. By contrast, the index hypothesis proposes that selection focuses mate choice on carotenoid coloration that is inherently condition dependent because production of such coloration is inexorably tied to vital cellular processes. These hypotheses for the origins of condition dependency make strongly contrasting and testable predictions about ornamental traits. To assess these two models, we review the mechanisms of production of carotenoids, patterns of condition dependency involving different classes of carotenoids, and patterns of behavioural responses to carotenoid coloration. We review evidence that traits can be condition dependent without the influence of sexual selection and that novel traits can show condition‐dependent expression as soon as they appear in a population, without the possibility of sexual selection. We conclude by highlighting new opportunities for studying condition‐dependent signalling made possible by genetic manipulation and expression of ornamental traits in synthetic biological systems.

show abstract

Section: Condition Dependency In Novel Traitsmentioning

confidence: 99%

Section: Condition Dependency In Novel Traitsmentioning

confidence: 99%

Carotenoid ornaments and the spandrels of physiology: a critique of theory to explain condition dependency

2023

View full text Add to dashboard Cite

show abstract

“…As one of the important aquaculture species in China, the Chinese soft-shelled turtle Pelodiscus sinensis has a high economic value (Wang et al 2022b). Therefore, it is crucial for farmers to increase the output of P. sinensis.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of bacterial diversity of pond water with different output of Chinese soft-shelled turtle Pelodiscus sinensis in dark greenhouse mode

Wang,

Chang,

Yan

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Dark greenhouse culture is one of the main culture methods of the Chinese soft-shelled turtle, Pelodiscus sinensis. The present study found that the outputs of P. sinensis differed among five ponds with the same initial stocking density and management measures, with the output of pond B with maximum yield being 1.69 times higher than that of pond A with minimum yield. Therefore, the physicochemical factors and bacterial communities of the two ponds were monitored, analyzed and compared. The contents of total nitrogen, nitrite nitrogen, and dissolved oxygen in pond B were extremely significantly higher than those in pond A at the late stage of cultivation. Correspondingly, the microbial diversity and richness were also higher in pond B. Additionally, the higher relative abundances of Gemmatimonadetes, Firmicutes, Nitrosomonas, Saccharimonadales andAzospira in pond B conferred it higher nitrification and denitrification ability than pond A in the middle and late stage of cultivation. Pearson’s correlation coefficient showed that the Saccharimonadales andAzospira were correlated with total nitrogen, ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen. Our results provide a reference for the modulation of the water environment in the dark greenhouse mode that used for turtle cultivation.

show abstract

Establishing a Freshwater Turtle (Emydura subglobosa) Laboratory Line (FTLL) as a novel model species for research and education

Rawski,

Kierończyk,

Skrzypczak

et al. 2024

Animal Science and Genetics

View full text Add to dashboard Cite

<b>The Jardine River turtle (Emydura subglobosa) was selected as a potential model species for studies on freshwater turtles and general reptile physiology. Attempts to establish a freshwater turtle laboratory line were made when an adult pair of E. subglobosa was received in 2016 by the Laboratory of Inland Fisheries and Aquaculture (Poznań University of Life Sciences). The first generation of offspring was obtained in 2017, and the second generation in 2023. In each generation, unrelated specimens were added to the animal cohort to avoid inbreeding. Husbandry regimes were established, and a basal diet for nutritional experiments was developed and manufactured by two methods, producing extruded feed and a gelatine-solidified variant. The establishment of the Freshwater Turtle Laboratory Line (FTLL) provides an opportunity to improve the development of husbandry techniques, increase knowledge of reptile physiology, and use laboratory-raised animals as model species for research and education.

show abstract

Morphological and molecular biological characterization of the Yongzhang golden turtle, a new strain of Pelodiscus sinensis

Cited by 3 publications

References 34 publications

Carotenoid ornaments and the spandrels of physiology: a critique of theory to explain condition dependency

Carotenoid ornaments and the spandrels of physiology: a critique of theory to explain condition dependency

Comparative analysis of bacterial diversity of pond water with different output of Chinese soft-shelled turtle Pelodiscus sinensis in dark greenhouse mode

Establishing a Freshwater Turtle (Emydura subglobosa) Laboratory Line (FTLL) as a novel model species for research and education

Contact Info

Product

Resources

About