Red Dog Research Articles

Red dog, blue dog: the influence of political identity on owner–pet relationships and owners’ purchases of pet-related products and services

Purpose Pets reflect the identity and moral values of their owners. The purpose of this study is to examine how pet owners’ political identity (liberal–conservative) influences the relationship they forge with their pets as well as their purchase behaviors of pet-related products and services. Design/methodology/approach This study conducted two surveys of pet owners with different political identities and measured both their relationship with their pets and their purchase intentions of medical-related products and services as well as luxury accessories. Two secondary data sources were used to provide additional support. Findings This study shows that, on one hand, pet owners anthropomorphize their pets as if they were human equals. On the other hand, they consider themselves masters and emphasize control. The former aligns with the individualizing values endorsed by liberals, while the latter aligns with conservatives’ binding values. Reflecting their different values and owner-pet relationship characteristics, liberals and conservatives exhibit different purchase patterns. Liberals are more likely to buy medical-related products and services, while conservatives are more likely to buy branded luxury accessories for their pets. Research limitations/implications Both primary studies are survey-based and data are correlational in nature. In addition, the samples are limited to the USA. While research suggests that the liberal-conservative continuum is universal, additional research is needed to generalize the findings to other countries. Practical implications Understanding the owner-dog relationship in the context of political identity and the effect of these relationships on dog owners' purchases offer interesting managerial implications in terms of product offerings, retail assortment decisions of related products and pet product branding. Originality/value While dog ownership and related purchases are on the rise, research on owner-pet relationships is scant. This study provides theoretical contributions and implications by going beyond general relationship closeness and bringing in the role of owners’ (political) identity.

Good Red Dog: The Long Term Economic Impact of Mining Activity in Rural Alaska

While resource booms in rural areas have the potential to transform communities, they also raise questions about the distribution and sustainability of the benefits/costs in both the short and long run. We estimate the long term effects of the Red Dog mine, an Alaska mine in the Northwest Arctic borough, on a variety of economic outcomes. We find suggestive evidence of immediate and long lasting effects of the mine on wages as well as evidence of increases in employment and reductions in government dependence. These findings suggest that even in the absence of pre-conditions to maximize the multiplier effects, the borough’s attempts to internalize the wealth generated by the mine have been successful because of agreements that prioritized local employment and revenues. This model could be potentially be implemented by other rural communities with newfound resource riches.

Distribution of antioxidants and phenolic compounds in flour milling fractions from hard red winter wheat

Mature wheat kernels contain three main parts: endosperm, bran, and germ. Flour milling results in multiple streams that are chemically different; however, the distribution of antioxidants and phenolic compounds has not been well documented in terms of conventional milling by-product streams. In this study, multiple analytical methods were used to investigate antioxidant activity and phenolic compound compositions of hard red winter wheat (whole ground wheat), the parts of a wheat kernel (bran, flour, germ), and wheat by-product streams (mill feed, red dog, shorts) for the first time. For each mill stream, phenolic compounds (total, flavonoid, and anthocyanin contents) were determined and antioxidant activities were evaluated with 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activity, ferric reducing/antioxidant power (FRAP), and total antioxidant capacity assays. Significant differences (P < 0.05) were observed in phenolic concentrations among fractions of bran, flour, and germ milled from the same kernels and noted that germ accounts for the majority of antioxidant properties, whereas bran contains a substantial portion of phenolic compounds and anthocyanins. Mill feed was high in phenolic content (5.29 mg FAE/g), total antioxidant capacity (866 mg/g), and antioxidant activity (up to 75% DPPH inhibition and 20.26 μmol FeSO4/g). The comprehensive information on distribution of antioxidants and phenolic compounds provides insights for future human consumption of commonly produced co-products from flour milling, and for selecting and using different milling fractions to make foods with improved nutritional properties.

Mixed trends in heavy metal-enriched fugitive dust on National Park Service lands along the Red Dog Mine haul road, Alaska, 2006-2017.

This study presents the status and trends of long-term monitoring of the elemental concentrations of zinc (Zn), lead (Pb), and cadmium (Cd) in Hylocomium splendens moss tissue in Cape Krusenstern National Monument (CAKR), Alaska, adjacent to the Red Dog Mine haul road. Spatial patterns of the deposition of these metals were re-assessed for the period from 2006-2017 following an identical study that assessed trends between 2001-2006. In contrast to the widespread and steep declines in Zn and Pb levels throughout most of the study area between 2001-2006, this study showed more mixed results for 2006-2017. At distances within 100 m of the haul road, only Pb decreased between 2006-2017. At distances between 100-5,000 m, however, both Zn and Cd decreased between 2006-2017, with high probabilities of decrease and percent decreases of 11-20% and 46-52% respectively. Lead did not decrease in any of the more distant areas. Following earlier work on lichen species richness in the study area, it appears that 2017 Zn levels are approaching those associated with "background" lichen species richness throughout a relatively large proportion of the study area at least 2,000 m from the haul road and several km from the port site. The findings in this study may be used to plan additional mitigation measures to reduce Zn deposition related to impacts on lichen communities.

Nutritional guide to feeding wheat and wheat co-products to swine: a review.

Inclusion of wheat grain can offer feeding opportunities in swine diets because of its high starch, crude protein (CP), amino acid (AA), and phosphorus (P) content. High concentrations of starch within wheat grain makes it a good energy source for swine. Mean energy content of wheat was 4,900 and 3,785 kcal/kg dry matter (DM) for digestible energy and metabolizable energy, respectively. CP concentration can vary based on the class of wheat which include hard red winter, hard red spring, soft red winter, hard white, soft white, and durum. The average CP of all wheat data collected in this review was 12.6% with a range of 8.5% to 17.6%. The AA concentration of wheat increases with increasing CP with the mean Lys content of 0.38% with a standardized ileal digestibility (SID) of 76.8%. As CP of wheat increases, the SID of AA in wheat also increases. Mean P of wheat was 0.27% and median P was 0.30%. Off-quality wheat is often associated with sprouts, low-test weight, or mycotoxin-contamination. Sprouted and low-test weight wheat are physical abnormalities associated with decreased starch within wheat kernel that leads to reductions in energy. The assumed energy value of wheat grain may need to be reduced by up to 10% when the proportion of sprouted to non-sprouted wheat is up to 40% whereas above 40%, wheat's energy may need to be reduced by 15% to 20%. Low-test weight wheat appears to not influence pig performance unless it falls below 644kg/m3 and then energy value should be decreased by 5% compared to normal wheat. Deoxynivalenol (DON) contamination is most common with wheat grain. When content is above the guidance level of 1mg/kg of DON in the complete diet, each 1mg/kg increase in a DON-contaminated wheat-based diet will result in a 11% and 6% reduction in ADG and ADFI for nursery pigs, and a 2.7% and 2.6% reduction in ADG and ADFI, in finishing pigs, respectively. Wheat co-products are produced from the flour milling industry. Wheat co-products include wheat bran middlings, millrun, shorts, and red dog. Wheat co-products can be used in swine diets, but application may change because of differences in the final diet energy concentration due to changes in the starch and fiber levels of each wheat co-product. However, feeding wheat co-products are being evaluated to improve digestive health. Overall, wheat and wheat co-products can be fed in all stages of production if energy and other nutrient characteristics are considered.

Improvement of Functional and Nutritional Properties of Extruded Snacks with the Utilization of Red Dog Flour

HIGHLIGHTS • Extruded corn snacks (ECS) were developed with red dog flour (RDF), rich in ash, protein, dietary fiberand bioactive component. • The best-optimized corn snack wasdetermined with a 20% RDF ratio. • The addition of the RDF increased the nutritional and functional properties of ECS. • Extrusion greatly reduced the phytic acid content of ECS containing RDF.

Zinc on the edge—isotopic and geophysical evidence that cratonic edges control world-class shale-hosted zinc-lead deposits

The North Australian Zinc Belt is the largest zinc-lead province in the world, containing three of the ten largest known individual deposits (HYC, Hilton-George Fisher, and Mount Isa). The Northern Cordillera in North America is the second largest zinc-lead province, containing a further two of the world’s top ten deposits (Red Dog and Howards Pass). Despite this world-class endowment, exploration in both mineral provinces during the past 2 decades has not been particularly successful, yielding only two significant discoveries (Teena, Australia, and Boundary, Canada). One of the most important aspects of exploration is to choose mineral provinces and districts within geological belts that have the greatest potential for discovery. Here, we present results from these two zinc belts that highlight previously unused datasets for area selection and targeting. Lead isotope mapping using analyses of mineralized material has identified gradients in μ (238U/204Pb) that coincide closely with many major deposits. Locations of these deposits also coincide with a gradient in the depth of the lithosphere-asthenosphere boundary determined from calibrated surface wave tomography models converted to temperature. Furthermore, gradients in upward-continued gravity anomalies and a step in Moho depth correspond to a pre-existing major crustal boundary in both zinc belts. A spatial association of deposits with a linear mid- to lower-crustal resistivity anomaly from magnetotelluric data is also observed in the North Australian Zinc Belt. The change from thicker to thinner lithosphere is interpreted to localize prospective basins for zinc-lead mineralization and to control the gradient in lead isotope and geophysical data. These data, when combined with data indicative of paleoenvironment and changes in plate motion at the time of mineralization, provide new exploration criteria that can be used to identify prospective mineralized basins and define the most favorable parts of these basins.

Impacts on tundra vegetation from heavy metal-enriched fugitive dust on National Park Service lands along the Red Dog Mine haul road, Alaska.

The DeLong Mountain Transportation System (DMTS) haul road links the Red Dog Mine-one of the world's largest zinc mines-with a shipping port on the Chukchi Sea in northwest Alaska, USA. The road traverses 32 km of National Park Service (NPS) lands managed by Cape Krusenstern National Monument (CAKR). Fugitive dusts from ore concentrate transport and mining operations have dispersed zinc (Zn), lead (Pb), cadmium (Cd), and metal sulfides onto NPS lands since the mine began operating in 1989. This study assessed the effects of metal-enriched road dusts on the diversity and community structure of lichens, bryophytes, and vascular plants in dwarf-shrub tundra within CAKR. In a Bayesian posterior predictions model, lichen species richness (LSR) was highly correlated to distance from the haul road and was distributed on the landscape consistently with the spatial patterns of Zn, Pb and Cd patterns published earlier in this journal. The mean modeled LSR of the 3000-4000 m distance class was 41.3, and LSR decreased progressively down to 9.4 species in the 0-50 m class. An ordination of 93 lichen species by 91 plots revealed strong community patterns based on distance from the haul road. The major community gradient was highly correlated (r = 0.99) with LSR and negatively correlated with Cd, Pb and Zn (-0.79 < r < -0.74). Ordinations of bryophyte classes showed less response than lichens to distance from the road and heavy metals values, and vascular plant ordination showed less still. Measures of bryophyte health such as the midrib blackening and frond width of Hylocomium splendens were positively correlated with distance from the haul road and negatively correlated with this same suite of elements. A total area of approximately 55 km2 showed moderate to strong impacts on lichens from fugitive dusts. This is equivalent to an area of almost 1 km on both sides of the haul road running 32 km through CAKR.

Comparative craniometric measurements of two Canid species in Egypt: the Egyptian red fox and the Egyptian Baladi dog

The Egyptian red fox (Vulpes vulpes aegyptiaca) and Egyptian Baladi dog (Canis familiaris) are two members of the Family Canidae that are widely distributed in Egypt. The skulls of different Canid species vary greatly in their size and shape; therefore, they can be used as a tool to study the evolution and evolutionary history of these animals. The craniometric measurements are crucial for species identification and determination of the specific sites for nerve blocks. The present study compared the craniometric measurements of the red fox and Baladi dog skulls by measuring 47 parameters on each skull and calculation of 8 indices. The red fox skull had significantly lower values of 41 craniometric measurements (approximately 87% of the measurements done), including skull length, width, and height, cranial length and width, palatal and mandibular length, and dental measurements. In contrast, the red fox had significantly higher values of only 3 measurements (approximately 6% of the measurements done) including the tympanic bulla measurement. While only three skull measurements did not differ significantly between the red fox and dog. Statistics revealed that domestic dog had significantly higher values of foramen magnum and palatine indices, and significantly lower value of nasal index than those of red fox. The present work reported variations in the gross and craniometric measurements of skull between the red fox and dog. The measured cranial parameters of both adult animals provide valuable information that can be used in ecological studies, comparative anatomy, and clinical veterinary sciences.

Willem Anker’s Red Dog, Cormac McCarthy, and the Enigma of Coenraad de Buys

Willem Anker has been accused of stealing from Cormac McCarthy’s Blood Meridian (1985) in his novel Red Dog (2018), the English translation of his award-winning Buys (2014). I defend Anker on the charge of plagiarism, while conceding that his novel could not have been the book that it is without the precedent of Blood Meridian. I go on to voice other reservations about Red Dog via discussion, inter alia, of Anker’s characterisation of Coenraad Buys and the rendering in English of his Afrikaans original. I conclude that the historical Coenraad Buys appears intractable to novelistic treatment, and that Anker signals his awareness of this while at the same time making a valiant attempt to bring the character to life.&#x0D; Keywords: Willem Anker, Red Dog, Buys, Cormac McCarthy, Blood Meridian, Sarah Gertrude Millin, King of the Bastards

Memorials and the Mine Disaster in Monongah, West Virginia: From Trauma to an Italian Global Memoryscape

Memorials and the Mine Disaster in Monongah, West Virginia: From Trauma to an Italian Global Memoryscape

Diagenetic Controls on the Formation of the Anarraaq Clastic-Dominated Zn-Pb-Ag Deposit, Red Dog District, Alaska

AbstractThe Anarraaq clastic-dominated (CD) Zn-Pb-Ag deposit (Red Dog district, Alaska, USA) has an inferred mineral resource of 19.4 Mt at 14.4% Zn, 4.2% Pb, and 73 g/t Ag and is spatially associated with a separate ~1 Gt barite body. This study presents new cross sections and petrographic evidence from the Anarraaq area. The barite body, previously shown to have formed in a shallow subsurface environment akin to a methane cold seep, contains multiple generations of barite with locally abundant calcite masses, which are discordant to sedimentary laminae, and is underlain by an interval of massive pyrite containing abundant framboids and radiolarians. Calcite and pyrite are interpreted to have formed by methane-driven diagenetic alteration of host sediment at the sulfate-methane transition (SMT). The sulfide deposit contains two zones of Zn-Pb mineralization bounded by faults of unknown displacement. The dominant hydrothermal minerals are marcasite, pyrite, sphalerite, quartz, and galena. The presence of hydrothermal pseudomorphs after barite, early pyrite resembling diagenetic pyrite associated with the barite body, and hydrothermal quartz and sphalerite filling voids formed by dissolution of carbonate all suggest that host sediment composition and origin was similar to that of the barite body prior to hydrothermal mineralization. Rhenium-osmium isochron ages of Ikalukrok mudstone (339.1 ± 8.3 Ma), diagenetic pyrite (333.0 ± 7.4 Ma), and hydrothermal pyrite (334.4 ± 5.3 Ma) at Anarraaq are all within uncertainty of one another and of an existing isochron age (~338 Ma) for the Main deposit in the Red Dog district. This indicates that the Anarraaq deposit formed soon after sedimentation and that hydrothermal activity was approximately synchronous in the district. The initial Os composition of the Anarraaq isochrons (0.375 ± 0.019–0.432 ± 0.025) is consistent with contemporaneous seawater, indicating that a mantle source was not involved in the hydrothermal system. This study highlights the underappreciated but important role of early, methane-driven diagenetic processes in the paragenesis of some CD deposits and has important implications for mineral exploration.

“We Never Get Stuck:” A Collaborative Analysis of Change and Coastal Community Subsistence Practices in the Northern Bering and Chukchi Seas, Alaska

The Indigenous communities of the northern Bering Sea and Chukchi Sea are experiencing extensive social, economic, and technological change. The region’s marine ecosystem is also characterized by a high degree of variability and by rapid change. Residents of eight coastal communities from Savoonga to Utqiaġvik were involved in the Chukchi Coastal Communities Project, which used the results of a literature review together with the experiences of the community participants to co-analyze what is known about societal and environmental change in the region and what the communities’ experiences have been in responding to those changes. Some of the observed changes are transient in duration and effect, such as the passage of an individual ship, whereas others, such as the creation of the Red Dog Mine Port Site, persist and may force coastal residents to make lasting changes in their activities. Some responses can use existing knowledge (e.g., hunting bowhead whales in fall as well as spring), whereas others may require learning and experimentation (e.g., harvesting new species such as the Hanasaki crab). Our findings show that the results of a change are more important than the source of the change. They also emphasize the continuing importance of traditional values and practices as well as attitudes conducive to persistence and innovation. Indigenous leadership is an essential component of continued resilience as the ecosystem continues to change. The resilient characteristics of coastal communities and their ability to determine their own responses to change need greater attention to match the research effort directed at understanding the ecosystem.

Analysis of seroprevalence in target wildlife during the oral rabies vaccination programme in Lithuania

BackgroundRabies vaccination of wildlife carnivores is a powerful tool to prevent, control and eliminate rabies. The presence of neutralizing rabies antibodies in blood is considered a reliable indicator of adequate vaccination. The main purpose of the present study was to analyze the seroprevalence of specific antibodies in target populations of Lithuanian red fox (RF) and raccoon dog (RD) during the oral rabies vaccination (ORV) campaigns during the 2010–2019 period.ResultsOver the ten-year period, 7,261 RF and 2,146 RD sera samples were collected post-mortem in field conditions and tested using a commercial standardized enzyme-linked immunosorbent assay (ELISA) kit in Lithuania. In the ORV spring and autumn vaccination periods, 31.8% (20.3–43.4 95% CI – 95% confidence interval) and 31.7% (21.2–42.1 95% CI) of RF, and 34.1% (22.5–45.7 95% CI) and 34.7% (22.7–46.7 95% CI) of RD sera samples, respectively, were identified as ELISA-positive (seroconversion ≥ 0.5 EU/mL—Equivalent Units per Millilitre). The seroprevalence analysis in adult/ juvenile animal subpopulations indicated that 34.9% (27.2–42.5 95% CI) and 29.2% (20.3–37.9 95% CI) of RF, and 35.6% (25.2–46.0 95% CI) and 30.6% (20.2–40.9 95% CI) of RD sera samples, respectively, were identified as ELISA-positive (seroconversion ≥ 0.5 EU/mL). Statistically strong determinate correlations (r) between the serological results (pos.%) in RF adult/juvenile animal subpopulations (r = 0.937) and between RF and RD positive seroconvert (pos.%) sera samples during the spring vaccinations (r = 0.864) were demonstrated. In different ORV periods, 14–29% of RF and 7–25% of RD sera samples were identified as ELISA-negative (seroconversion < 0.5 EU/mL), but with low (0.125 < 0.49 EU/mL) antibody (Abs) titres.ConclusionsThe 2010–2019 ORV programme has been an effective tool in both RF and RD populations in Lithuania. The rabies-free status of Lithuania was self-declared in 2015 with only three rabies cases identified in buffer zones since then. The percentage of ELISA-positive serum samples (seroconversion ≥ 0.5 EU/mL) during the different periods of vaccination was similar in RF and RD populations—32% and 34% respectively. The identified seroconversion average of 21.5% in RF and 16% in RD sera samples were officially identified as ELISA-negative (seronversion < 0.5 EU/mL), but with low 0.125 < 0.49 EU/mL Abs titres. That low, but positive seroconversion participated in the formation of populations overall immune status and can influence the interpretation of oral vaccination efficacy.

Milling byproducts are an economically viable substrate for butanol production using clostridial ABE fermentation

Butanol is a platform chemical that is utilized in a wide range of industrial products and is considered a suitable replacement or additive to liquid fuels. So far, it is mainly produced through petrochemical routes. Alternative production routes, for example through biorefinery, are under investigation but are currently not at a market competitive level. Possible alternatives, such as acetone-butanol-ethanol (ABE) fermentation by solventogenic clostridia are not market-ready to this day either, because of their low butanol titer and the high costs of feedstocks. Here, we analyzed wheat middlings and wheat red dog, two wheat milling byproducts available in large quantities, as substrates for clostridial ABE fermentation. We could identify ten strains that exhibited good butanol yields on wheat red dog. Two of the best ABE producing strains, Clostridium beijerinckii NCIMB 8052 and Clostridium diolis DSM 15410, were used to optimize a laboratory-scale fermentation process. In addition, enzymatic pretreatment of both milling byproducts significantly enhanced ABE production rates of the strains C. beijerinckii NCIMB 8052 and C. diolis DSM 15410. Finally, a profitability analysis was performed for small- to mid-scale ABE fermentation plants that utilize enzymatically pretreated wheat red dog as substrate. The estimations show that such a plant could be commercially successful.Key points• Wheat milling byproducts are suitable substrates for clostridial ABE fermentation.• Enzymatic pretreatment of wheat red dog and middlings increases ABE yield.• ABE fermentation plants using wheat red dog as substrate are economically viable.Graphical abstract

AMY2B Gene Copy-Number Variation Studied by Droplet Digital PCR (ddPCR) in Three Canids: Red Fox, Arctic Fox, and Chinese Raccoon Dog

Copy-number variation (CNV) is an important source of genetic variation, and one that played a role in the process of domestication. The adaptation to a new diet is a characteristic feature of dog domestication. We therefore sought genomic signatures of this process. The pancreatic alpha-amylase gene (AMY2B), expressed in the pancreas, exhibits a variable number of copies. It has been shown that the multiplication of this gene is associated with the adaptation of dogs to a starch-rich diet. To date, there has been no information made available on the copy-number variation of AMY2B in canid farm animals. The aim of the present study was to examine the AMY2B copy number in the red fox, the arctic fox, and in the Chinese raccoon dog. Droplet digital PCR (ddPCR) was used to count the gene copies in 152 animals (60 red foxes, 53 arctic foxes, and 39 Chinese raccoon dogs). We found that the majority (91%) of the animals had two copies of this gene. Of the red foxes and Chinese raccoon dogs, only 8% had three copies, while 32% of the arctic foxes had three copies. Our study showed that the multiplication of the AMY2B gene did not occur over several decades of breeding selection, which may reflect the low-starch feeding regime.

Human health risk assessment of metals exposure through subsistence foods consumption and subsistence harvest activities near a mining transport road in northwest Alaska

Historical transport of ore concentrate over a 50-mile haul road from the Red Dog zinc/lead mine in northwest Alaska to a seaport has been associated with elevated lead levels on moss growing near the road and with concerns about the safety of subsistence foods. As part of a comprehensive evaluation of potential impacts to human health and the environment from metals released during overland transport of ore concentrate, a human health risk assessment was conducted. Exposure to site-related metals through subsistence food consumption, water ingestion, and incidental soil ingestion was evaluated for three scenarios: child subsistence use, adult subsistence use, and adult combined occupational and subsistence use. The risk assessment used local subsistence food consumption data and subsistence harvest area information, along with metal concentrations from soil, water, caribou, fish, ptarmigan, berries, and sourdock collected on or near the road and port. The results, along with other lines of evidence, indicate that risks associated with subsistence food consumption and harvest activities are well within acceptable limits for each scenario and that subsistence foods remain safe to eat. Additionally, human health risks are not elevated even when data from restricted areas of the road and port are included.

Long-term benefits to Indigenous communities of extractive industry partnerships: Evaluating the Red Dog Mine

Mining, and oil and gas companies developing resources on land historically occupied and used by Indigenous peoples have faced criticism for offering few benefits to local communities while inflicting environmental damage. The Red Dog Mine -- a joint venture between Teck Resources, Inc. and the NANA Regional Corporation -- has often been cited as an example for developing extractive industries in a way that does benefit Indigenous communities. The mine is located in an economically impoverished region in Northwest Alaska that has few other wage-earning opportunities for the largely Iñupiat population. Although the mine has brought demonstrable financial benefits to the region, questions persist about its long-term benefits to local communities. This paper assesses a suite of long-term benefits of the Red Dog mine, based on findings from unique 14-year panel dataset. The paper focuses on the direct effects of the mine on the individual Indigenous workers of the region. Specifically, the analysis addressed the following set of questions: How does employment at Red Dog affect workers’ mobility and long-run earnings? How long do most local residents hired to work at the mine keep these jobs? What percentage of the mine workers live in the communities in the region, and what percentage of the total payroll do local workers receive? The findings illustrate the strengths and limitations of partnerships between Indigenous organizations and extractive industries, and offer insights relevant to Indigenous communities across the arctic and around the world as they plan development of local resources.

Fossil, ichnofossil, or concretion: The enigma of “Dinocochlea ingens”

The misidentification of biomimetic or biomorphic structures (especially helical forms) as biogenic can lead to serious errors in the interpretation of depositional environments and stratigraphic relationships, and in the detection of primitive life. “Dinocochlea ingens” was originally described as a giant gastropod and recently has been interpreted as a diagenetically-modified ichnofossil, based on dextral- and sinistral-twist bodies reported from the Lower Cretaceous Wadhurst Clay Formation, near Hastings, Sussex, United Kingdom. Morphologically similar decimeter- to meter-scale helical concretions occur with spheroidal and macrobotryoidal concretions in the shale of the Ikalukrok unit in the upper part of the Mississippian Kuna Formation that hosts the Red Dog Mine in northwestern Alaska. The mineral assemblages of both the helical and spheroidal concretions at Ikalukrok Creek are identical. The calcite of these concretions consists of cm-scale radiating aggregates of elongate poikilotopic crystals; this texture is megaspherulitic. The calcite has a relatively narrow range of δ13CVDPB values between 1.9‰ to 3.0‰ and δ18OVPDB values from −5.9‰ to −8.0‰. Growth of the concretions is considered to be pre-compaction because there is no evidence of internal layering, or inclusions of the host shale, despite their preservation of numerous microfossils. There is no indication of a causative small-scale burrow or of large-scale burrows. Analogy with laboratory syntheses of biomimetic carbonates suggests that the megaspherulitic texture of the helical and spheroidal concretions probably resulted from crystallization under strong driving forces such as high supersaturation.

Значение отдельных видов млекопитающих в переносе вируса бешенства в Центральном федеральном округе России

The Rabies – a viral disease characterized by severe damage of the nervous system. The analysis of data from the Rospotrebnadzor for 4 years (from 2015 to 2018) on the varmint of animals with rabies in four regions of the Central Federal District with different population densities is carried out. The main carriers of rabies virus in the region are the red fox, raccoon dog, stray dogs and cats; the role of other species is not so significant and rarely exceeds 1% of the total number of animals with suspected rabies. It has been established that in areas with a low population (Tver region) the role of a raccoon dog in rabies transfer can be even more significant than red foxes. To reduce the incidence of human rabies, constant monitoring and regulation of the numbers of foxes and raccoon dogs in the wild, as well as stray dogs and cats, is highly required. Consequently, we consider the current tendency to remove stray dogs from their habitats, their sterilization and return to urbocenosis insufficient; sterilized dogs will remain a source of rabies in populated locations.