Use of bone layers to determine age in minke whales

• Main Authors: Sukhovskaya, L. I., Klevezal, G. A., Borisov, V. I., Lagerev, S. J.
• Format: Text
• Language: English; Polish
• Published: 1985
• Subjects: age determination; Balaenoptera acutorostrata; bone layers; earplugs; tympanic bulla; Płetwal karłowaty; oznaczanie wieku; warstwa kostna; Antarctic; The Antarctic; Antarc*
• Online Access: https://rcin.org.pl/dlibra/publication/edition/11126/content

Examination was made of tympanic bullae and ear plugs from 43 minke whales Balaenoptera acutorostrata (Lacepéde, 1804) taken in the Antarctic in December 1980. The number of layers in acidetched polish sections was systematically underestimated as compared with those in haematoxylin-stained sections of the same bone segment. In stained sections the layers are distinct, except for one or two inner layers, the boundaries of which may be diffused. Examination was made of tympanic bullae and ear plugs from 43 minke whales Balaenoptera acutorostrata (Lacepéde, 1804) taken in the Antarctic in December 1980. The number of layers in acidetched polish sections was systematically underestimated as compared with those in haematoxylin-stained sections of the same bone segment. In stained sections the layers are distinct, except for one or two inner layers, the boundaries of which may be diffused.