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  • Cambridge University Press (CUP)  (2)
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  • Cambridge University Press (CUP)  (2)
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  • 1
    Online Resource
    Online Resource
    TRPA1 expression provides new insights into thermal perception by the sea urchin Strongylocentrotus intermedius
    Cambridge University Press (CUP) ; 2019
    In:  Journal of the Marine Biological Association of the United Kingdom Vol. 99, No. 8 ( 2019-12), p. 1825-1829
    Details
    In: Journal of the Marine Biological Association of the United Kingdom, Cambridge University Press (CUP), Vol. 99, No. 8 ( 2019-12), p. 1825-1829
    Abstract: Thermal perception is crucial for the fitness of marine invertebrates in intertidal and shallow waters. TRPA1 is a non-selective cation channel that belongs to the TRP family with pivotal roles in initiating signal transduction of thermal perception. We investigated expression patterns of SiTRPA1 in different tissues (tube feet, coelomocytes, gonads and gut) of the sea urchin Strongylocentrotus intermedius . SiTRPA1 expression patterns under acute and long-term temperature stimuli were investigated in tube feet of sea urchins. In the present study, the highest expression of SiTRPA1 was detected in tube feet of S. intermedius . The SiTRPA1 expression level in tube feet were significantly 235.7-fold, 450.0-fold and 3299.7-fold higher than those in the coelomocytes, gonads and gut (df = 3, F = 47.382, P 〈 0.001). Expression levels of SiTRPA1 in the other tissues (coelomocytes, gonads and gut) were not significantly different (df = 3, F = 47.382, P = 0.972). There was no significant difference of SiTRPA1 expression among all groups in the acute temperature increase experiment (df = 4, F = 0.25, P = 0.902). In the acute temperature decrease experiment, the expression of SiTRPA1 showed no significant difference among all groups (df = 4, F = 1.802, P = 0.205). With long-term exposure (6 weeks) to different temperatures, SiTRPA1 expression in the low temperature group (10°C) was significantly higher than those in the high temperature (20°C) and the control groups (15°C) (df = 2, F = 9.57, P = 0.014). There was no significant difference of SiTRPA1 expression between the high temperature (20°C) and the control temperature (15°C) groups (df = 2, F = 9.57, P = 0.808). These results indicate that SiTRPA1 expression significantly responds to long-term low temperature but not to acute temperature decrease. The present study provides new insights on the distribution and temporal expression of TRPA1 in marine invertebrates after acute and long-term temperature stimuli.
    Type of Medium: Online Resource
    ISSN: 0025-3154 , 1469-7769
    URL: Article
    DOI: 10.1017/S0025315419000882
    RVK:
    WA 15000
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2019
    detail.hit.zdb_id: 1491269-7
    detail.hit.zdb_id: 281325-7
    SSG: 12
    Location Call Number Limitation Availability
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Effects of flow velocity on fitness-related behaviours of the sea urchin Mesocentrotus nudus : new information on stock enhancement
    Cambridge University Press (CUP) ; 2020
    In:  Journal of the Marine Biological Association of the United Kingdom Vol. 100, No. 6 ( 2020-09), p. 963-967
    Details
    In: Journal of the Marine Biological Association of the United Kingdom, Cambridge University Press (CUP), Vol. 100, No. 6 ( 2020-09), p. 963-967
    Abstract: The effects of flow velocity on the fitness-related behaviours of Mesocentrotus nudus remain largely unknown, greatly hampering the efficiency of stock enhancement. To explore the appropriate velocities for stock enhancement, we investigated dislodgement and immobilization velocities up to 90 cm s −1 . The experimental results showed that M. nudus (test diameter of ~30 mm) were dislodged at 73.50 ± 7.7 cm s −1 and that M. nudus movement occurred only when the flow velocity was less than 33.40 ± 2.7 cm s −1 . Three flow velocities less than 33.40 ± 2.7 cm s −1 (2, 10 and 20 cm s −1 ) were subsequently used to study the effects of flow velocities on covering behaviour and the righting response time of M. nudus . The downstream movement velocity of M. nudus was significantly larger than that upstream at 2 cm s −1 ( P = 0.016) and 10 cm s −1 ( P = 0.008), but not at 20 cm s −1 ( P = 0.222). The righting response time of M. nudus was significantly longer at 20 cm s −1 than that at 2 cm s −1 ( P = 0.015). The present study indicates that a flow velocity less than 20 cm s −1 , preferably 2–10 cm s −1 , is probably appropriate for the stock enhancement of M. nudus . Notably, the current study is a laboratory investigation without considering the hydrographic complexity in the field. Further studies should be carried out to investigate the long-term effects of water flow on feeding and growth of M. nudus both in the laboratory and the field.
    Type of Medium: Online Resource
    ISSN: 0025-3154 , 1469-7769
    URL: Article
    DOI: 10.1017/S0025315420000867
    RVK:
    WA 15000
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1491269-7
    detail.hit.zdb_id: 281325-7
    SSG: 12
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
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