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  • 1
    Electronic Resource
    Electronic Resource
    Muscle cellularity in relation to somatic growth in the European sea bass Dicentrarchus labrax (L.) (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 27 (1996), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Sea bass, Dicentrarchus labrax (L.), juveniles (1.32 g) grew at a rate of 4.2% per day, when fish were fed ad libitum and reared at optimal thermal conditions (ambient sea water temperature, 20-26°C). At 13°C, feeding and spontaneous activity were severely restricted and somatic growth was reduced to 0.6% per day. Over a period of 6 weeks, both muscle fibre hyperplasia and nuclear division were higher in the ambient-temperature group compared with the fish reared at 13°C. Despite the differences in growth rate and spontaneous activity, muscle fibre hyperplasia was paralleled by nuclear division in the lateral axial muscle in both temperature groups and the number of nuclei per myofibre did not differ significantly between the two temperature groups. It is concluded that at optimal thermal and feeding conditions, somatic growth of sea bass juveniles is mediated through an increase in the number of nuclei and muscle fibres.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2109.1996.t01-1-00819.x
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  • 2
    Electronic Resource
    Electronic Resource
    Temperature and oxygen tension influence the development of muscle cellularity in embryonic rainbow trout (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 53 (1998), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Muscle cellularity at a developmental stage around the time of hatching was examined in rainbow trout which had been reared from the eyed stage at three different temperature regimes (5, 10 and 15° C) and different O2 tensions [70% of air saturation value (ASV) at 5° C, 100% of ASV at all temperatures, and 150% of ASV at 10 and 15° C]. It was found that, as has been shown for other species, there was a difference in muscle fibre numbers and fibre cross-sectional areas between some of the regimes. There was a decrease in fibre number at the intermediate and higher temperature, and a decrease in fibre size at the high temperature. The temperature effects observed were modified by the applied changes in O2 tension. An increased O2 tension at 10° C led to an increase in fibre size whereas a decrease in O2 tension at the low temperature resulted in a decrease in fibre number. The largest total white muscle cross-sectional area was achieved at 10° C under high O2 conditions. Temperature and O2 tension therefore had a clear effect on muscle cellularity and there was a significant interaction between the two parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1998.tb01003.x
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  • 3
    Electronic Resource
    Electronic Resource
    Activity of cytochrome c oxidase and lactate dehydrogenase in muscle tissue of slow growing (lower modal group) and fast growing (upper modal group) Atlantic salmon (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 48 (1996), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Fast growing Atlantic salmon (upper modal group) exhibit a higher activity of muscle cytochrome c oxidase (CCO) and lactate dehydrogenase (LDH) than the slow growing salmon (lower modal group). The ratios of CCO/LDH activity, indicate a higher aerobic/anaerobic metabolic potential of the axial muscle in the upper modal group.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1996.tb01449.x
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  • 4
    Electronic Resource
    Electronic Resource
    Muscle development in Atlantic salmon (Salmo salar) embryos and the effect of temperature on muscle cellularity (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 44 (1994), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Salmon eggs were incubated at 5, 8 or 11° C from fertilization to hatching. At Gorodilov stages 25, 27, 29, 31 and 33 transverse sections of whole embryos (at somite level 10–15) were prepared for histochemistry and electron microscopy. At every stage up to hatching, cross–sectional areas of the embryos were not different between temperatures, and from stage 27 onwards there was also no difference in the ratio of white to red muscle. However, there were more muscle fibres but of smaller average diameter in both the red and white muscle for the colder temperature embryos. At hatching there were also more nuclei (per cross–section) in the colder embryos but more nuclei per muscle fibre in the warmer embryos. In all cases the 8° C embryos were intermediate between 5 and 11° C embryos in their muscle parameters. Fast and slow muscle fibres could only be distinguished in the embryos by alkali–stable ATPase reactions. Succinic dehydrogenase activity was low in embryonic fish. No differences between the temperature groups were detected in the histochemical reactions for either ATPase or succinic dehydrogenase activities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1994.tb01267.x
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  • 5
    Electronic Resource
    Electronic Resource
    Temperature- and developmentally-induced variation in the histochemical profile of myofibrillar ATPase activity in carp (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 47 (1995), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The histochemical profile of calcium activated acid stable myofibrillar ATPase (mATPase) activity in developing larval and juvenile carp was investigated. In the larval fish, differentiation of pink muscle fibres occurred after metamorphosis which was delayed by a week at 17° C compared to larvae grown at 27° C. After metamorphosis the 27° C group exhibited some small myofibres with acid stable mATPase activity in the deep white muscle. This was similar for the juvenile carp which were acclimated for more than a month at 25° C. In contrast, the cold (12° C) acclimated juvenile fish, contained very few small white muscle fibres with acid stable mATPase activity. It was also noted that the cold acclimated fish had lower background acid stable mATPase activity than the warm acclimated fish. Results indicate that after metamorphosis and more evidently in juveniles, temperature can influence the rate of myofibre hyperplasia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1995.tb01930.x
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  • 6
    Electronic Resource
    Electronic Resource
    Relationship between size of muscle fibres and body dimensions in a number of teleosts (1975)
    Springer
    Cellular and molecular life sciences 31 (1975), S. 1279-1281 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In a survey of 17 species of teleosts, a direct relationship was found between the diameter of muscle fibres and estimated volume of the fish. The results also suggested an inverse relationship between muscle fibre diameter and ‘streamlinedness’ of the fish (as measured by length:height ratio).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01945780
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  • 7
    Electronic Resource
    Electronic Resource
    The growth of Atlantic salmon (Salmo salar L.) myosatellite cells in culture at two different temperatures (1995)
    Springer
    Cellular and molecular life sciences 51 (1995), S. 260-266 
    Details
    ISSN: 1420-9071
    Keywords: Salmon ; satellite cells ; cell culture ; temperature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Temperature is known to affect fish growth, and in Atlantic salmon there is an influence on muscle cellularity. Primary muscle cell culture makes it possible to investigate direct effects of temperature on myogenic cells. Salmon myosatellite cells were cultured for the first time in this study. The cells were cultured at either 5°C or 11°C. Increased temperature led to an increase in differentiation rate and especially hypertrophic growth (Q10=4.0). No nuclear proliferation was evident in the satellite cell population isolated at either temperature. This may be due to the presence of different subpopulations of myogenic cells at different developmental ages or the presence of indirect factors in vivo.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01931109
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  • 8
    Electronic Resource
    Electronic Resource
    The expression of the myogenic regulatory factors in denervated and normal muscles of different phenotypes (2000)
    Springer
    Journal of muscle research and cell motility 21 (2000), S. 647-653 
    Details
    ISSN: 1573-2657
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The nerve is known to play a pivotal role in the diversification of muscle fibre types postnatally. Reducing neuronal activity in a slow muscle such as the soleus by denervation, switches on genes associated with a fast muscle phenotype. On the other hand, denervating a fast muscle such as the extensor digitorum longus (EDL) induces the conversion of fast fibres to a ‘slower’ contractile phenotype. The myogenic regulatory factors (MRFs) are proposed as the regulators of muscle phenotype as MyoD and myogenin have been shown to differentially accumulate in fast and slow muscle upon the induction of fibre type transformation. The denervation model has been used in the present study to induce changes in MRF expression in the muscles of the lower hindlimb which have distinct phenotypic characteristics. The level of MRF expression in pairs of denervated and innervated soleus, EDL, tibialis anterior (TA), plantaris and gastrocnemius muscles has been determined by Northern analysis and compared. The present study has shown that each muscle responds differently to denervation with respect to the increases in MRF expression. Fast muscles responded very quickly to denervation by increasing the level of MRF transcripts while slow muscles did not show significant increases in expression after 48 h denervation. The innervated EDL (fast) and soleus (slow) muscle differed with respect to the level of MRF-4 expressed, MRF-4 being expressed at higher levels in the slow muscle compared to the fast, suggesting that MRF-4 is important in the maintenance of a slow muscle phenotype. Moreover, MRF-4 and myogenin show the greatest fold increases in expression in the fast muscles examined. MyoD and Myf 5 show less dramatic increase in expression in response to denervation but exhibit the greatest fold increases in the fast muscles compared to slow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005683825960
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  • 9
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    Relationship between size of muscle fibres and body dimensions in a number of teleosts (1975)
    Springer
    Details
    Publication Date: 1975-11-01
    Print ISSN: 0014-4754
    Topics: Biology , Medicine
    Published by Springer
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  • 10
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    The growth of Atlantic salmon (Salmo salar L.) myosatellite cells in culture at two different temperatures (1995)
    Springer
    Details
    Publication Date: 1995-03-01
    Print ISSN: 0014-4754
    Topics: Biology , Medicine
    Published by Springer
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