A partial carcass of an adult woolly mammoth (Mammuthus primigenius) found in 2012 on Maly Lyakhovsky Island presents a new opportunity to retrieve associated anatomical, morphological, and life history data on this important component of Pleistocene biotas. In addition, we address hematological, histological, and microbiological issues that relate directly to quality of preservation. Recovered by staff from North-Eastern Federal University in Yakutsk, this individual is a relatively old female preserving soft tissue of the anteroventral portion of the head, most of both fore-quarters, and the ventral aspect of much of the rest of the body. Both tusks were recovered and subjected to computed tomographic analysis in which annual dentin increments were revealed as cycles of variation in X-ray attenuation. Measurements of annual increment areas (in longitudinal section) display a pulsed pattern of tusk growth showing cycles of growth rate variation over periods of 3e5 years. These intervals are interpreted as calving cycles reflecting regular shifts in calcium and phosphate demand for tusk growth vs. fetal ossification and lactation. Brown liquid associated with the frozen carcass turned out to include remains of hemolyzed blood, and blood samples examined microscopically included white blood cells with preserved nuclei. Muscle tissue from the trunk was unusually well preserved, even at the histological level. Intestinal contents and tissue samples were investigated microbiologically, and several strains of lacticacid bacteria (e.g., Enterococcus faecium, Enterococcus hirae) that are widely distributed as commensal organisms in the intestines of herbivores were isolated.
In modern conditions of animal husbandry, when high-tech methods of breeding replace existing approaches to livestock maintenance, timely vaccination is almost the only reliable way to fight clostridiosis. Anaerobic infections are a serious problem for livestock breeding worldwide. The damage is caused by economic losses and animal deaths, as well as by the adverse conditions in the area, contaminated by spores of pathogens and losses from the introduction of quarantine measures and restrictions. Due to the wide spread of pathogens in the environment, the acute or super-acute course of the disease and the severity of damage to body tissues, treatment of animals is almost 100% ineffective compared to specific prevention. However, for the development of an effective immunobiological medication, it is necessary to justify its composition, therefore, it is important to constantly monitor the etiological structure of clostridiosis in cattle.
Abstract. The data from the Greenwich Observatory for 1879-2003 (cycles 12-23) have been used to plot a time (Carrington rotations) vs. Carrington longitude diagram of distribution of the rotation-summed daily areas for each sunspot group. It has been revealed that most of the sunspots appear as clusters having common sources (Sunspot Formation Zones) that lie on a surface rotating with a period close to the Carrington rotation period T = 27.2753 days. At the same time both the active longitudes and medium-size spots shift in the Carrington heliolongitude and rotate at an angular velocity corresponding to the rotation period T ∼ 26.8 − 26.9 days. An attempt is made to explain contradictory data on the character of rotation of sunspots and active longitudes.
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