Vertebrae of the trunk and tail display different growth rates in response to photoperiod in Atlantic salmon, Salmo salar L., post-smolts

Fjelldal, Per Gunnar; Nordgarden, Ulla; Berg, A.; Grotmol, Sindre; Totland, Geir K.; Wargelius, Anna; Hansen, Tom

doi:10.1016/j.aquaculture.2005.04.056

Cited by 74 publications

(71 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering the complex effect that continuous light has on the vertebrae (Fjelldal et al, 2005;Nordgarden et al, 2006;Wargelius et al, 2009), the induction of eight genes must be regarded as a low number, a number that was even lower in experiment 2. However, much of the effect may have been masked by the circadian rhythm of bone tissue, and as is known in mouse bone, 26% of the transcriptome exhibits a circadian pattern (Zvonic et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…In Atlantic salmon (Salmo salar L.), continuous light (Fjelldal et al, 2005) and pinealectomy (Fjelldal et al, 2004) are associated with lower vertebral mineral content and mechanical strength. In salmon, the response to change in photoperiod is thought to be primarily mediated by the pineal gland, and continuous light suppresses nocturnal melatonin production from this gland (Porter et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…for microarray analysis was performed 3 weeks after the onset of continuous light (3rd February) and a detailed description of the rearing conditions is given by Fjelldal et al (Fjelldal et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Collagen type XI α1 may be involved in the structural plasticity of the vertebral column in Atlantic salmon (Salmo salar L.)

Wargelius

Fjelldal

Nordgarden

et al. 2010

Journal of Experimental Biology

View full text Add to dashboard Cite

SUMMARY Atlantic salmon (Salmo salar L.) vertebral bone displays plasticity in structure, osteoid secretion and mineralization in response to photoperiod. Other properties of the vertebral bone, such as mineral content and mechanical strength, are also associated with common malformations in farmed Atlantic salmon. The biological mechanisms that underlie these changes in bone physiology are unknown, and in order to elucidate which factors might be involved in this process, microarray assays were performed on vertebral bone of Atlantic salmon reared under natural or continuous light. Eight genes were upregulated in response to continuous light treatment, whereas only one of them was upregulated in a duplicate experiment. The transcriptionally regulated gene was predicted to code for collagen type XI α1, a protein known to be involved in controlling the diameter of fibrillar collagens in mammals. Furthermore, the gene was highly expressed in the vertebrae, where spatial expression was found in trabecular and compact bone osteoblasts and in the chordoblasts of the notochordal sheath. When we measured the expression level of the gene in the tissue compartments of the vertebrae, the collagen turned out to be 150 and 25 times more highly expressed in the notochord and compact bone respectively, relative to the expression in the trabecular bone. Gene expression was induced in response to continuous light, and reduced in compressed vertebrae. The downregulation in compressed vertebrae was due to reduced expression in the compact bone, while expression in the trabecular bone and the notochord was unaffected. These data support the hypothesis that this gene codes for a presumptive collagen type XI α1, which may be involved in the regulatory pathway leading to structural adaptation of the vertebral architecture.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Collagen type XI α1 may be involved in the structural plasticity of the vertebral column in Atlantic salmon (Salmo salar L.)

Wargelius

Fjelldal

Nordgarden

et al. 2010

Journal of Experimental Biology

View full text Add to dashboard Cite

show abstract

“…Deformities in juvenile tench (Tinca tinca L.) with significantly elevated whole body lipid have been reported [36]. Increased growth in Atlantic salmon (Salmo salar L.) stimulated by continuous light, which is not caused by increased protein deposition [10] but by increased lipid deposition [13], results in reduced mechanical strength and growth of the vertebrae in Atlantic salmon postsmolts [37]. Thus, stimulating fish growth without concerning with appropriate dietary P/L ratio and P/L ratio deposition in muscle or body may affect the strength of skeletal growth and cause deformities.…”

Section: Discussionmentioning

confidence: 99%

Different Dietary Levels of Protein to Lipid Ratio Affected Digestive Efficiency, Skeletal Growth, and Muscle Protein in Rainbow Trout Families

Rungruangsak‐Torrissen

Stien

Daae

et al. 2009

Scholarly Research Exchange

View full text Add to dashboard Cite

Normal Protein (NP) and High Protein (HP) diets were provided to rainbow trout families from juvenile to maturity. Muscle protein concentration increased during growth and the protein to lipid (P/L) ratio was doubled at late stage with respect to the dietary P/L ratio. The HP-diet fish showed higher protein deposition in body and white muscle, and had lower condition factor due to protein deposition associated more with body length than body weight. Fish growth rates were decreased at maturation, and the HP-diet fish showed lower growth rate including the activity ratio of trypsin to chymotrypsin (T/C ratio) and feed efficiency. Trypsin and chymotrypsin specific activities were related to dietary protein levels, and the T/C ratio was related to intestinal weight and growth rate independent of the enzymes specific activity levels. The families with high growth capacity could double increase white muscle P/L ratio levels, compared to low and medium growth families, if they were fed on HP-diet. The digestive enzyme extracts from high growth families resulted in higher in vitro protein digestibility for all diets. The effect of dietary P/L ratio on digestion, skeletal growth (length) and the white muscle P/L ratio in fish with different growth capacities is illustrated.

show abstract

“…The sections in the vertebral column of the two cichlid species in question could be developed through the difference in length of vertebrae in different regions of the vertebral column, which in turn is due to different mechanisms that regulate the growth of the vertebrae in each region (Fjelldal et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Some Osteological Studies of <i>Coptodon zillii</i> (Gervais 1848) and <i>Oreochromis aureus</i> (Steindachner 1864) Collected Shatt al-Arab River, Basrah, Iraq

Jawad¹,

Habbeb²,

Al-Mukhtar³

2018

ijms

View full text Add to dashboard Cite

This paper presents the results of a comparative study of the vertebral column regionalization of Coptodon zillii andOreochromis aureus of the fish family Cichlidae. Osteological features that may prove valuable for taxonomic indications are defined, and on the basis of the material handled, their use to separate the two cichlid species. The morphological characteristics of the vertebral column of C. zillii and O. aureus allowed the separation of this bony structure into five morphologically distinct regions and the features of their specified vertebral shape. This regionalization is more complex than the classical division in truncal and caudal parts only. The vertebral length and height express a morphotype that may be linked with the cichlid mode of swimming.

show abstract

Vertebrae of the trunk and tail display different growth rates in response to photoperiod in Atlantic salmon, Salmo salar L., post-smolts

Cited by 74 publications

References 32 publications

Collagen type XI α1 may be involved in the structural plasticity of the vertebral column in Atlantic salmon (Salmo salar L.)

Collagen type XI α1 may be involved in the structural plasticity of the vertebral column in Atlantic salmon (Salmo salar L.)

Different Dietary Levels of Protein to Lipid Ratio Affected Digestive Efficiency, Skeletal Growth, and Muscle Protein in Rainbow Trout Families

Some Osteological Studies of <i>Coptodon zillii</i> (Gervais 1848) and <i>Oreochromis aureus</i> (Steindachner 1864) Collected Shatt al-Arab River, Basrah, Iraq

Contact Info

Product

Resources

About