Ossification of the Antler in the Lapland Reindeer (&lt;i&gt;Rangifer tarandus tarandus&lt;/i&gt;)

Rönning, Olli; Salo, Leila; Larmas, Markku; Nieminen, Miika T.

doi:10.1159/000146908

Cited by 10 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, our study provided no evidence for a direct conversion of cartilage into bone during primary antler formation, i.e., we found no indication of an involvement of metaplasia in this process. In this respect, our results corroborate earlier histological findings of Gruber (1937) and Li and Suttie (1994) on first antler formation and are at variance with those of Ronning et al (1990) who studied secondary antler growth in reindeer (Rangifer tarandus).…”

Section: Discussionsupporting

confidence: 92%

Tissue differentiation and correlated changes in enzymatic activities during primary antler development in fallow deer (Dama dama)

Szuwart

Kierdorf

et al. 1995

Anat. Rec.

View full text Add to dashboard Cite

Histologically, the primary antler could in distoproximal direction be divided into eight different zones (dermis; perichondrium; zones of cartilage formation, hypertrophy, mineralization, and degeneration; primary spongiosa; secondary spongiosa). The histological results demonstrate that the elongation of the primary antler proceeded through a modified form of endochondral ossification, resembling that seen during formation of pedicles and secondary antlers. The concentrations of the extractable activities of ALP and TRAP progressively increased from the perichondrium to the zone of cartilage mineralization. Thus, highest activity of TRAP during primary antler formation occurred at an earlier stage of tissue differentiation than in somatic endochondral ossification, where the enzyme is a biochemical marker of osteoclastic activity during bone remodeling. The present results might reflect the presence of osteoclastic precursor cells in the zone of cartilage mineralization as an adaptation to the rapidity of antler growth. Our findings of the contents of extractable ALP, inorganic and organic phosphate in the different tissue zones of the developing primary antler are in good agreement with previous studies analyzing epiphyseal growth plates and point to the fact that ALP causes a rise in inorganic phosphate and the removal of inhibitors for mineralization, like pyrophosphate.

show abstract

Section: Discussionsupporting

confidence: 92%

Tissue differentiation and correlated changes in enzymatic activities during primary antler development in fallow deer (Dama dama)

Szuwart

Kierdorf

et al. 1995

Anat. Rec.

View full text Add to dashboard Cite

show abstract

Effects of an antiandrogen treatment on the antler cycle of male fallow deer (Dama dama L.)

Kierdorf

Schultz²,

Fischer

1993

J. Exp. Zool.

View full text Add to dashboard Cite

Weekly application of the antiandrogen cyproteron acetate (CA) to 3 adult (group 1, treatment starting 3 weeks prior to the rut) and 4 subadult (group 2, treatment starting after the rut) fallow bucks led to premature antler casting after about 9 weeks (group 1) or 16 to 17 days (group 2). Variation in time span between onset of CA administration and induced casting (in late November/early December) is attributed to age- and season-dependent differences in androgen levels before and during the treatment period. Casting surfaces of the antlers were flat. In all bucks, casting was followed by a complete though shortened antler cycle, occurring under short day conditions. In February/March velvet was shed from the antlers, indicating a rise in plasma androgen levels at that time. At time of fraying, antlers exhibited signs of immaturity and were shorter than normal. In the most pronounced case of immaturity, the antlers consisted mainly of cancellous woven bone, revealing that bone remodeling and antler mineralization had not occurred to a larger extent. These observations prove that onset of fraying behaviour does not depend on prior maturation of antler bone or necrosis of velvet. Occurrence of the additional antler cycle in late autumn and winter had no negative effect on subsequent antler formation starting in the following spring.

show abstract

Biochemical and histological study of the ossification in the early developing pedicle of the fallow deer (Dama dama)

et al. 1994

View full text Add to dashboard Cite

Ossification of the Antler in the Lapland Reindeer (<i>Rangifer tarandus tarandus</i>)

Cited by 10 publications

References 6 publications

Tissue differentiation and correlated changes in enzymatic activities during primary antler development in fallow deer (Dama dama)

Tissue differentiation and correlated changes in enzymatic activities during primary antler development in fallow deer (Dama dama)

Effects of an antiandrogen treatment on the antler cycle of male fallow deer (Dama dama L.)

Biochemical and histological study of the ossification in the early developing pedicle of the fallow deer (Dama dama)

Contact Info

Product

Resources

About