Otolith microstructure of Oxygymnocypris stewartii (Cypriniformes, Cyprinidae, Schizothoracinae) in the Lhasa River in Tibet, China

Jia, Yating; Chen, Yifeng

doi:10.1007/s10641-008-9334-x

Cited by 12 publications

(7 citation statements)

References 13 publications

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“…This phenomenon was also described in other Schizothoracinae fishes. The DGIs within the first annulus were 121-184 in Oxygymnocypris stewartii (Jia and Chen 2009) and 137-154 in Ptychobarbus dipogon (Li et al 2009). It seems that optical resolution would be insufficient to keep track of daily increments in winter (Chen et al 2002a,b).…”

Section: Discussionmentioning

confidence: 98%

“…It seems that optical resolution would be insufficient to keep track of daily increments in winter (Chen et al 2002a,b). The mean number of microincrements represented the number of days (about seven or eight months in one year) when Schizothoracinae fishes grew rapidly (Jia and Chen 2009). And the narrower DGI width might be due to decreasing growth rates during the cold winter in Tibetan plateau (Li et al 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Although DGI periodicity was not validated, the increments were presumed to be daily by analogy with other Schizothoracinae species (Jia and Chen 2009). In addition, the marginal increment ratio (MIR) analysis was used to verify the period of annulus formation in the otoliths.…”

Section: Age Validation and Annual Periodicitymentioning

confidence: 99%

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Age validation, and comparison of otolith, vertebra and opercular bone for estimating age of Schizothorax o’connori in the Yarlung Tsangpo River, Tibet

Xie

Huo

et al. 2010

Environ Biol Fish

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A collection of 514 Schizothorax o'connori was made between August 2008 and August 2009 from Yarlung Tsangpo River to assess the suitability of three bony structures for age estimation. The annulus characteristics of otolith, vertebra and opercular bone were described. Location of the first annulus was validated by daily growth increment (DGI) analysis in the otoliths. Annual periodicity was verified by marginal increment ratio (MIR) analysis in otoliths and edge analysis in vertebrae and opercular bones. Annuli formed, once a year, between March and May for all three bony structures. Otoliths, vertebrae and opercular bones were examined to determine which structure produced the most precise and accurate age estimates in S. o'connori. Vertebrae and otoliths matched closely for the first 21 years of life, while opercular bones appeared to underestimate age. For older fish, the counts diverged and otoliths consistently providing higher age estimates. Sectioned otoliths proved to be the most precise and accurate structure for age estimation. The oldest observed schizothoracine fish was 50, more than twice the longevity previously accepted in S. o'connori.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

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Age validation, and comparison of otolith, vertebra and opercular bone for estimating age of Schizothorax o’connori in the Yarlung Tsangpo River, Tibet

Xie

Huo

et al. 2010

Environ Biol Fish

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“…The index of growth performance (ǿ) is a useful parameter for comparing the growth of different populations of the same species and/or different species of the same order (Sparre et al ., 1987). Differences in growth rate could be due to genetic reasons but could also result from differences in food abundance and water temperature among geographic regions (Jia & Chen, 2011; Laurent et al ., 2012). Silva et al .…”

Section: Discussionmentioning

confidence: 99%

Age and growth of the Japanese butterfish Psenopsis anomala in the waters off north-eastern Taiwan

2020

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The catch of Japanese butterfish, Psenopsis anomala in Taiwan is greater than those of any other nation; however, the biology, particularly the age and growth, of this economically important fish species is little known. This study describes the age and growth of P. anomala based on 734 specimens (340 females, 363 males, 31 unsexed) caught by trawl fishery in the north-eastern waters off Taiwan from March 2007 to July 2008. The age of specimens was estimated by counting the growth annuli in sagittal otoliths. The periodicity of annulus deposition on otolith was estimated to be one year with opaque zone deposited between July and August based on marginal increment analysis. The maximum age for both sexes was estimated to be ~4. The female portion of the population was dominated by the 3+ age class, while the male portion was dominated by the 2∞ age class. The parameters of the von Bertalanffy growth function with standard error estimated based on the observed length at age using a non-linear method are as follows: L∞ = 25.47 ± 0.65 cm, k = 0.30 ± 0.03 year−1, and t0 = −1.84 ± 0.16 year for females (n = 350), and L∞ = 22.39 ± 0.45 cm, k = 0.46 ± 0.04 year−1, and t0 = −1.38 ± 0.13 year for males (n = 378). The growth performances of P. anomala reported from different geographic regions were compared, and the potential influences of sample size distribution on the estimated growth parameters were further discussed.

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“…To enhance the protection of this species, O. stewarti is listed as near threatened on the IUCN Red List and is classified as endangered at the national level. To date, most reports concerning O. stewarti have focused on age and growth ( Jia and Chen, 2011 ; Huo et al, 2012 ), feeding habits ( Huo et al, 2014 ), otolith microstructure ( Jia and Chen, 2009 ), reproductive biology ( Huo et al, 2013 ), embryonic and larval development ( Xu et al, 2011 ), genetic structure ( Dong et al, 2021 ), nutrition composition ( Luo et al, 2014 ), and the genome ( Liu et al, 2019 ). For the intestinal microbial communities in O. stewarti , Chen et al (2017) compared the differences between healthy and diseased individuals.…”

Section: Introductionmentioning

confidence: 99%

Temperature Acclimation Alters the Thermal Tolerance and Intestinal Heat Stress Response in a Tibetan Fish Oxygymnocypris stewarti

Zhu

et al. 2022

Front. Microbiol.

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Numerous studies have shown that thermal tolerance and intestinal heat resistance are strongly associated with temperature acclimation. However, few reports have successfully conducted similar research on fishes from the Qinghai–Tibetan Plateau, an area that is facing the threat of climate warming. Therefore, the present study determined the growth, thermal tolerance, and intestinal heat stress (exposure to 30°C) responses in juveniles of a Tibetan fish, Oxygymnocypris stewarti, acclimated to three temperature levels (10°C, 15°C, and 20°C, named as T10, T15, and T20, respectively) for 30 days. The fastest growth was recorded in the T15 group. At 1°C/30 min heating rate, the critical thermal maximum (CTMax) ranged from 31.3°C to 32.3°C, and the lethal thermal maximum (LTMax) ranged from 31.8°C to 32.6°C among the three acclimation temperatures. According to the results of thermal tolerance tests, the heat stress temperature was set to 30°C. When the water temperature reached 30°C, the expression of the intestinal heat shock protein 70 (HSP70) gene as well as the intestinal microbiome and histology of experimental fish were monitored at 0, 2, 6, and 12 h. The expression of HSP70 reached the highest level at 2 h in all three temperature treatments. The histological analysis showed damage to intestinal cells, including diffuse infiltration of lymphocytes, villi epithelial cell swelling, decrease of intestinal villi length, and cytoplasmic light staining at 2 h in all three temperature treatments. In terms of the intestinal microbiome, phyla Proteobacteria and Firmicutes dominated the treatments at each monitored time in the T10 and T15 groups and at 0 h in T20 group, while phyla Fusobacteria, Proteobacteria, and Cyanobacteria were dominant in treatments at 2, 6, and 12 h in the T20 group. The overall results indicated that acclimation temperature could affect the growth, thermal tolerance, and intestinal heat stress response of O. stewarti juveniles. As the first report on intestinal heat stress response associated with temperature acclimation in a Tibetan fish, this study will help to understand the potential effects of climate change on highland fishes.

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Otolith microstructure of Oxygymnocypris stewartii (Cypriniformes, Cyprinidae, Schizothoracinae) in the Lhasa River in Tibet, China

Cited by 12 publications

References 13 publications

Age validation, and comparison of otolith, vertebra and opercular bone for estimating age of Schizothorax o’connori in the Yarlung Tsangpo River, Tibet

Age validation, and comparison of otolith, vertebra and opercular bone for estimating age of Schizothorax o’connori in the Yarlung Tsangpo River, Tibet

Age and growth of the Japanese butterfish Psenopsis anomala in the waters off north-eastern Taiwan

Temperature Acclimation Alters the Thermal Tolerance and Intestinal Heat Stress Response in a Tibetan Fish Oxygymnocypris stewarti

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