Carcass Transport Research Articles

Prion forensics: a multidisciplinary approach to investigate CWD at an illegal deer carcass disposal site

ABSTRACT Infectious prions are resistant to degradation and remain infectious in the environment for several years. Chronic wasting disease (CWD) has been detected in cervids inhabiting North America, the Nordic countries, and South Korea. CWD-prion spread is partially attributed to carcass transport and disposal. We employed a forensic approach to investigate an illegal carcass dump site connected with a CWD-positive herd. We integrated anatomic, genetic, and prion amplification methods to discover CWD-positive remains from six white-tailed deer (Odocoileus virginianus) and, using microsatellite markers, confirmed a portion originated from the CWD-infected herd. This approach provides a foundation for future studies of carcass prion transmission risk.

Using ZooMS to assess archaeozoological insights and unravel human subsistence behaviour at La Viña rock shelter (northern Iberia)

The highly fragmented nature of Palaeolithic faunal assemblages is a regular limitation in archaeozoological analyses as it prevents a precise taxonomic identification following comparative anatomy criteria. In this paper, we integrate Zooarchaeology by Mass Spectrometry (ZooMS) analysis of unidentifiable bone fragments within archaeozoological and taphonomic data to overcome this limitation and disentangle the subsistence strategies of Solutrean and Magdalenian human groups of the La Viña rock shelter (northern Iberia). The ZooMS results are consistent with the archaeozoological data showing preferential exploitation of red deer complemented by horses and caprids, whereas large bovids and reindeer are a minor component. This study also reveals significant species variability in classifying unidentifiable bones to mammal-size classes. The combination of biomolecular methods and traditional archaeozoology and taphonomy provides a higher resolution of faunal diversity in Palaeolithic assemblages and hominin subsistence behaviour related to carcass transport and seasonality.

Skala transportu zwierząt gospodarskich w Unii Europejskiej

Agricultural policy and the profitability of production are conducive to the movement of animals not only for slaughter, but also for pig fattening or cattle fattening. The largest producers transport animals both in intra-EU trade and to third countries. Transporting animals, especially over long distances, involves significant environmental costs. In contrast, the transport of carcasses or meat is more beneficial in terms of its impact on the environment and climate change. It appears that changes in this area may be accelerated by pressure from consumer choices.

Analysis of the protohistoric period fauna from the Scott County Pueblo site in western Kansas

The Scott County Pueblo (14SC1) is a seven-room masonry pueblo situated on the High Plains in western Kansas. Recent analyses identify at least two occupations prior to the Pueblo Revolt of 1680: an earlier Dismal River Complex (ancestral Apache, Ndee) occupation dating between AD 1470 and 1640, and a later multiethnic occupation of ancestral Apache (Ndee) and Rio Grande Puebloan peoples dating around AD 1630–1690. This paper reports the results of the zooarchaeological analysis of a faunal collection excavated by James H. Gunnerson in 1965. Our results indicate Scott County hunters preyed upon an array of species, although bison, canids, and turtles were the most common taxa procured. Based on bison skeletal part representation, we hypothesize small groups of hunters traveled to procure bison, and the differential transport of high utility body parts reflects a subsistence strategy to accommodate for the limited labor available for carcass transport.

Informing Surveillance through the Characterization of Outbreak Potential of Chronic Wasting Disease in White-Tailed Deer

Understanding the role that an environmental prion reservoir plays in the outbreak dynamics of chronic wasting disease (CWD) in free ranging white-tailed deer (Odocoileus virginianus) is critical for the allocation of disease surveillance resources by state and provincial wildlife agencies. We hypothesized that demographic, ecological, and epidemiological configurations naturally attenuate epidemic risk despite the introduction of infectious prions into a susceptible population of deer, but the magnitude of infectious prions in the environmental prion reservoir complicate outbreak expectations. We developed a Susceptible-Latent-Exposed-Infective (SLEI) compartment model to represent the dynamics of CWD epidemics in free-ranging white-tailed deer, then used the basic reproductive ratio (R0) to pinpoint counties under which pathogenic introduction (transport of infectious bodily fluids, tissues, and carcasses through natural or anthropogenic means) naturally produced (or failed to produce) an epidemic. We found that the outlook for an epidemic hinged on transmission rates, the magnitude of environmental contamination, and system type (density-, frequency-, or density/frequency-dependent). CWD can persistently infect individuals living in a contaminated environment even if direct transmission is insufficient to sustain circulation. Theoretical results show that transmission of CWD cannot be exclusively density dependent, and must behave as either a mix between frequency and density dependent, or strictly frequency dependent. While the compartment model is a simplistic representation of reality and did not contain many complicating biological considerations, it was immediately useful in hypothesis generation, motivating the collection of additional data for use in more biologically detailed models, and in the allocation of finite surveillance resources to place emphasis on data collection in areas where an introduction of infectious prions is comparatively more likely to result in an epidemic.

Mitigating GHG emissions: A global ecosystem service provided by obligate scavenging birds

Dead animals release greenhouse gases to the atmosphere through natural decomposition or because they have to be processed by disposal methods such as composting or rendering. Obligate scavenging birds (vultures) consume dead animals and are among the most efficient terrestrial scavengers. They may therefore contribute to a considerable reduction in sources of greenhouse gases. Here, we quantify the global contribution of vultures in reducing greenhouse gas emissions by consuming organic material. First, we evaluated a scenario where all the dead animals that can be consumed by vultures every year have to be disposed of by composting, anaerobic decomposition (e.g., burial), anaerobic digestion or rendering. Second, we assessed a scenario in which dead animals are left to decompose in the environment. Current vulture populations (∼134–140 million individuals) may reduce emissions of 3.03–60.70 Tg CO2 eq. per year, depending on the disposal method implemented, without considering carcass transport to disposal plants. Alternatively, they may reduce emissions of 13.02 Tg CO2 per year if dead animals remain in the environment. Over recent years a decline in vulture populations worldwide has led to a decrease of a 30 % in their capacity to mitigate greenhouse gases emissions. A few abundant vulture species reduce almost 98 % of the maximum emissions potentially removed worldwide by all extant vulture species over one year. This ecosystem service contributed by vultures to humans and nature cannot easily be replaced by other species, including humans. Moreover, supplanting this contribution with alternative carcass disposal methods is expensive and harmful to the environment due to emissions generated in the process. Our results highlight an important service that vultures provide worldwide, which is relevant in the current context of global warming.

New zooarchaeological perspectives on the early Upper Paleolithic Rostamian sequence of Ghar-e Boof (southern Zagros Mountains, Iran)

Ghar-e Boof is a Paleolithic cave site in Iran, known for being the type locality for the early Upper Paleolithic (UP) Rostamian lithic industries. Defining the Rostamian cultural group has significant archaeological implications for the Zagros Mountains. First, it highlights the cultural diversity of the UP in the Zagros. Second, it evinces a more complex scenario for the spread of anatomically modern humans (AMHs) across Southwest Asia. Despite this, little is known about human subsistence strategies during the Rostamian. In this paper, we present the results of a zooarchaeological analysis that allows us to reconstruct prey choice, transport decisions, and carcass processing at Ghar-e Boof. Wild sheep/goat was the main prey at the site, but other taxa such as partridges, tortoises, and gazelles represented important dietary supplements. Mortality data indicate that Rostamian hunters primarily targeted prime-aged adult ungulates. Anatomical representation also shows that there was no selective transport of animal carcasses to the site, so hunting activities most likely took place nearby. Although many specimens in the assemblage were covered by thick concretions, the presence of cut marks demonstrates defleshing, filleting, dismemberment, and even the removal of internal organs of prey. Percussion impacts and cone fractures also suggest the processing of bones for marrow. Chronologically, moving from the oldest to the youngest layers, there is a decrease in large game in parallel with a progressive increase in small, fast-moving animals. Following the prey choice model of optimal foraging theory, this diachronic variation might track regional resource stress or an increase in hunting pressure. Our results, along with the analysis of lithic artifacts and changes in the rates of sedimentation during the Rostamian sequence, indicate an increase in occupation intensity through time. Thus, the archaeological record of Ghar-e Boof and the ubiquity of UP sites across the Dasht-e Rostam region most probably reflect population growth within a few millennia after the arrival of AMHs.

Upper Paleolithic animal exploitation in the Armenian Highlands: The zooarchaeology of Aghitu-3 Cave

Excavated from 2009 to 2019 by the Tübingen-Armenian Paleolithic Project, Aghitu-3 Cave is the only stratified Upper Paleolithic site in Armenia. Sedimentary deposits range from 39,000 to 24,000 calibrated years before present (ka cal BP). The main Paleolithic occupations occurred during the accumulation of Archaeological Horizon (AH) VI between 36 and 32 ka cal BP and AH III between 29 and 24 ka cal BP. AH VI was deposited under warm and humid conditions, while AH III shows evidence for cooler and drier conditions. Here we report the results of a comprehensive zooarchaeological study aimed at characterizing early modern human hunting behavior in the Armenian Highlands. Our results indicate a focus on adult goats and equids. Bird remains are present, but we found no evidence of human exploitation. Carcass transport strategies appear more selective than those inferred for other assemblages in the region, suggesting that foragers at Aghitu-3 were exploiting larger hunting territories. Finally, we present the results of a pilot microwear and mesowear study on caprine teeth. The latter found evidence for a highly abrasive grazing diet, which in turn suggests that occupation during the formation of AH III took place in spring or summer.

Factors affecting the fate of Pacific lamprey carcasses and resource transport to riparian and stream macrohabitats

Abstract Anadromous fish transport marine‐derived nutrients to freshwaters during spawning migrations with potential implications for stream food webs. While many studies have explored the role of marine‐derived nutrients instream ecosystems (particularly via Pacific salmonids [Oncorhynchus spp.]), relatively few have examined the spatial distribution and patchiness of non‐salmonid fish carcasses or rates of transport to the riparian zone. We radio‐tagged and released 144 mature Pacific lamprey (Entosphenus tridentatus) prior to spawning and tracked the fate of post‐spawn carcasses in two inland Columbia River basin streams to characterise spatial distribution of carcasses and marine‐derived nutrient deposition. We found that 27 and 40% of lamprey that could be assigned a fate were moved into the riparian zone adjacent to stream segments exhibiting higher velocity conditions with larger substrates. Conversely, lamprey with instream fates were associated with depositional microhabitats and woody debris dams. Estimated carcass loading rates varied by more than an order of magnitude among habitats. These patterns probably reflect a combination of processes influencing the likelihood of carcass removal (e.g. by predators or scavengers, or stranding) and factors affecting the distribution of carcasses remaining within the stream. Our results demonstrate substantial transport of lamprey carcasses across the stream‐riparian ecotone and a non‐random distribution of carcasses within streams, patterns which probably influence how resources enter stream and riparian food webs. More broadly, the results suggest local and landscape‐scale hydrogeomorphic factors, along with species‐specific traits and phenology, affect the distribution and potential roles of fish carrion in stream food webs.

A campsite on the open plain: Zooarchaeology of Unit III at the Middle Paleolithic site of Nesher Ramla, Israel

The Levantine Middle Paleolithic period displays significant archaeological variability across a series of cave and open-air sites encompassing ca. 200,000 years. Faunal remains are an important source of knowledge regarding hunting and mobility patterns but have mostly been studied in the deep stratigraphic sequences of the Levantine caves. This research addresses questions of hunting, carcass transport, butchery patterns and use of space as they occurred at the Middle Paleolithic open-air site of Nesher Ramla in central Israel. The site is an 8-m-thick sequence within a karst sinkhole, dating to MIS6/5. We conducted the first detailed taphonomic and zooarchaeological study at the site, focusing on a sample from Unit III, which is a thin layer with dense lithics and faunal remains, combustion features, manuports, and ochre. Our results reveal an anthropogenic accumulation that is dominated by aurochs, equid, and tortoise remains. The large ungulates’ (aurochs) skeletal-element representation is biased in favor of meat- and fat-rich body parts, coupled with abundant evidence of dismemberment, filleting and marrow extraction. These parts were imported to the sinkhole for processing and consumption. Tortoises are abundant. The lithic assemblages exhibit high frequency of retouched tools and low typological diversity and are characterized by high visibility of personal toolkit components. Coupled with use-wear analysis that suggests a low spectrum of activities and massive occurrence of hammerstones, anvils and manuports, these characteristics indicate that the Unit III occupation represents an intensive camp centering on aurochs processing and butchering.

Early Upper Paleolithic subsistence in the Levant: Zooarchaeology of the Ahmarian–Aurignacian sequence at Manot Cave, Israel

The Early Upper Paleolithic period in the Levant is essential in the studies of the establishment of modern human communities outside Africa, and corresponding archaeological evidence may be used to shed light on human ecology, economy and demography. Specifically, cultural differences between two Early Upper Paleolithic entities, the Early Ahmarian and the Levantine Aurignacian, raise the question of differing adaptations. In this article we use archaeofaunal remains from the Early Upper Paleolithic sequence at Manot Cave (Western Galilee, Israel), to track human hunting patterns, carcass transport and processing within the Early Ahmarian (46–42 ka) and Levantine Aurignacian (38–34 ka) phases. We test two hypotheses: 1) the Ahmarian and Aurignacian represent adaptations to different environments; and 2) the two entities differ in mobility patterns and site use.Our multivariate taphonomic analysis showed subtle differences in depositional processes between the two phases and demonstrated a primarily anthropogenic complex. In both phases, human subsistence was based on two ungulate species, mountain gazelle (Gazella gazella) and Mesopotamian fallow deer (Dama mesopotamica), with some contribution from birds, tortoises and small mammals. Among the gazelles, it appears that female herds were targeted, and that hunting took place close to the cave. The results of the research show great similarity in environmental exploitation between the Ahmarian and Aurignacian phases concerning prey spectrum and choice, carcass transport and processing. These patterns occupy a middle position between the Middle Paleolithic and the late Epipaleolithic of the region. Despite this, there are also several significant differences between the phases such as increased exploitation of small game (especially birds) and faster accumulation and higher densities of material in the Aurignacian. This may indicate greater occupation intensity during the Aurignacian compared to the Ahmarian, and thus could explain the outstanding character of this entity in the Levant.

Influence of redox conditions on animal distribution and soft-bodied fossil preservation of the Lower Cambrian Chengjiang Biota

The exceptionally preserved Chengjiang Biota (Yunnan, China) is significant for understanding the rapid development of complex animal-rich ecosystems during the evolutionary radiation of the Cambrian. However, the ecological signal provided by the fossils captured in this deposit may not reflect accurately the in-life community, with transport and decay of carcasses being the principal processes responsible for potential modification. The principal fossil-bearing interval (Maotianshan Shale Member, Yu'anshan Formation) is comprised of claystones of two distinct depositional origins: the “background” beds represent slow hemipelagic deposition into deep waters, while the “event” beds represent distal turbidites or storm-generated beds. Each bed type has a distinct fossil assemblage and preservation mode underscoring the importance of interpreting the palaeoenvironment of each bed type. Here, we interpret palaeo-redox conditions for both the background beds and the event beds by conducting a systematic geochemical study using iron speciation, δ34Spy, δ13Ccarb,δ13CTOC and molybdenum abundance. These data are from the most complete core recovered from the Chengjiang fossiliferous units and allow us to distinguish redox conditions where the animals lived, and where they were buried and exceptionally preserved. Our results demonstrate that background beds were dominated by dysoxic conditions; here, a diverse sponge community tolerant of low-oxygen conditions lived. In contrast, the shallower shelf and offshore-transitional environments, where event beds were sourced, were almost persistently oxic, and it was here where the diverse Chengjiang Biota flourished. Thus, the Chengjiang sediments record two distinct palaeocommunities within the background and the event beds. The contrasting redox conditions in close spatial proximity likely facilitated the soft-bodied fossil preservation. Our findings provide a valuable case study in the necessity to understand ecological composition and exceptional preservation informed by environmental context.

Disentangling faunal skeletal profiles. A new probabilistic framework

Faunal skeletal profiles from archaeological assemblages have been long analysed regarding differential transport of carcasses to infer hunting preferences, human mobility, or even dietary stress. However, the existence of several possible accumulating agents, together with the effect of bone attrition, is known to introduce a potential bias, thus hindering the possibilities of meaningful concussions. In order to overcome this problem, several methods were proposed during the late 90s and early 2000’s, although a consensus was not reached, mainly because the different approaches were based on a certain initial hypothesis that significantly affected the output. Building on that previous experience, a new methodological framework is proposed and compared here. Moving from rather deterministic techniques, a Bayesian alternative approach based on a Monte Carlo Markov Chain sampling is presented and applied to several ethnographic and Pleistocene key sites. This new method makes use of the available information to constrain the possible degrees of attrition and carcass processing strategies, leading to easily comparable results.

Ungulate skeletal element profiles: A possible marker for territorial contraction and sedentism in the Levantine Epipaleolithic

The Epipaleolithic sequence of the southern Levant (ca. 24,000–11,500 cal. BP) reflects the shift from mobile to sedentary foraging societies, eventually paving the way to nascent villages, domestication and farming. Early and middle Epipaleolithic cultures (locally, the Kebaran and the Geometric Kebaran) generally produce an archaeological signature of mobile foragers, while the late Epipaleolithic Natufian Culture is renowned for the regular and intensified appearance of durable architecture, cemeteries, groundstones and art, joined with a broad-spectrum economy, and therefore indicates a more complex and sedentary society. Epipaleolithic archaeofaunas have been thoroughly investigated to detect shifts in site-occupation intensity, including changes in prey abundances, ungulate culling patterns and carcass processing habits, but carcass transport decisions received less attention. The transition to sedentary living in the Natufian would entail the exploitation of a defined and contracted territory around the site. In this case, central-place foraging theory predicts that ungulates will be hunted in the site's proximity and hence will be carried away in a more complete form, undergoing minimal or no field butchery. Therefore, we predict that skeletal-element profiles in sedentary Natufian hamlets will be more complete than in pre-Natufian camps, used by mobile foragers. We test this prediction by constructing detailed skeletal-element profiles and examining skeletal-element evenness. The results indicate that ungulate carcasses were transported significantly more completely in the Natufian assemblages, supporting our prediction. We further zoom in to explore the differential distribution of skeletal element abundances within a Natufian hamlet, showing the discard and attrition patterns that eventually produced our skeletal-element record. The results of our analysis of skeletal-element evenness correspond to other archaeological proxies for increased site-occupation intensity and territorial contraction in the Natufian.

Evaluation of the network of protection areas for the feeding of scavengers in Spain: from biodiversity conservation to greenhouse gas emission savings

Summary Protected areas are one of the most common strategies for wildlife conservation world‐wide. However, their effectiveness is rarely evaluated. In Europe, after the outbreak of bovine spongiform encephalopathy, a restrictive sanitary regulation (EC 1774/2002) prohibited the abandonment of dead livestock in extensive farming (extensive livestock) in the field, which led to negative consequences for scavengers. As an attempt to mitigate this negative impact, a new regulation was approved (EC 142/2011) to allow farmers to leave extensive livestock carcasses in the so‐called ‘Protection areas for the feeding of necrophagous species of European interest’ (PAFs). Our general aims were to quantify (i) the proportion of breeding distribution of targeted scavenger species overlapping PAFs; (ii) the extensive livestock carrion biomass available inside PAFs; (iii) the proportion of breeding distribution of non‐targeted scavenger species falling within PAFs; (iv) the overlap between the home range of vultures and PAFs, as well as the extent to which vultures move through different administrative units; and (v) the savings in greenhouse gas (GHG) emissions in relation to the pre‐PAF scenario. After assessing the status of PAF implementation in every region of peninsular Spain, we analysed the large‐scale spatial information of extensive livestock carrion availability and scavenger breeding distribution, movement data of GPS‐tracked vultures, and the annual GHG emissions associated with the transport of livestock carcasses. Most regions established PAFs in their territories, although design criteria were variable. The breeding distribution of targeted species was better represented within PAFs than that of non‐targeted species. The extensive livestock carrion biomass potentially available for scavengers within PAFs represented 34·9% of the annual extensive livestock biomass generated in peninsular Spain. The overlap between the home range of GPS‐marked vulture populations and PAFs ranged between 63·4% and 100%. The minimum convex polygon of these and other GPS‐tracked vulture populations in peninsular Spain encompassed 3–14 Spanish regions and 1–4 countries. Post‐PAF there was a potential reduction of c. 55·7% of GHG emissions compared to pre‐PAF. Synthesis and applications. The implementation of the new sanitary regulation by means of areas for the feeding of scavengers could mean an important improvement in scavenger conservation and a noteworthy reduction in greenhouse gas emissions: in Spain, extensive livestock carrion availability might increase to 33 474 t yr−1, and 43 344 t of CO2 eq. might be saved annually. However, we identified some gaps related to the distribution of endangered facultative scavengers. Moreover, given that vultures are highly mobile organisms, the design and management of these feeding areas should be coordinated at both the supra‐regional and supra‐national scales.

Ungulate carcass transport strategies at the Middle Palaeolithic site of Abric Romaní (Capellades, Spain)

We evaluated the skeletal profiles from several levels of the Neanderthal site of Abric Romaní, focusing on the methodology proposed by Faith and Gordon (2007): differences in the skeletal distribution of animals in accordance with their size and weight; the statistical correlation between the skeletal profiles and standard food utility index; and the anatomical diversity of size-weight categories. Results indicate an unconstrained transport strategy in all levels and all size-weight categories. However, we also found differences in the skeletal distribution of medium-sized and large animals, which may be due to different transport strategies. These characteristics suggest that the superposition of transport and occupation events could be responsible for our results. In addition, we applied the same analysis to Hadza assemblages, which revealed similar results to those found at Abric Romaní. The most striking feature of the Hadza assemblages examined is the superposition of transport events as a result of successive occupation/deposition events. This suggests that the transport strategies used by Neanderthals at Abric Romaní are also characterized by a high degree of diversity in transport decisions.

Bird mortality due to the Deepwater Horizon oil spill: Comment on Haney et al. (2014a,b)

Haney et al. (2014a,b; Mar Ecol Prog Ser 513:225�237, 239-252) developed probabil- ity models to estimate seabird mortality from oil exposure during the Deepwater Horizon oil spill. Although frequently used to characterize avian mortality following oil spills, probability models often yield uncertain results when developed without spill- and/or region-specific data. Models based on observations of beached carcasses or exposure/mortality scenarios are sensitive to vari- ations in assumptions and methods used to summarize data sets for model parameterization and validation. Here we present alternative parameter estimates derived from spill- and Gulf of Mex- ico (GoM)-specific data, and offer suggestions for reducing model uncertainty. As a primary example, we evaluate the carcass transport probability to shorelines using GoM-specific data col- lected in 2011 to show that Haney et al. underestimated this probability by more than an order of magnitude, thus inflating mortality estimates.

Persistence of DNA in carcasses, slime and avian feces may affect interpretation of environmental DNA data.

The prevention of non-indigenous aquatic invasive species spreading into new areas is a goal of many resource managers. New techniques have been developed to survey for species that are difficult to capture with conventional gears that involve the detection of their DNA in water samples (eDNA). This technique is currently used to track the invasion of bigheaded carps (silver carp and bighead carp; Hypophthalmichthys molitrix and H. nobilis) in the Chicago Area Waterway System and Upper Mississippi River. In both systems DNA has been detected from silver carp without the capture of a live fish, which has led to some uncertainty about the source of the DNA. The potential contribution to eDNA by vectors and fomites has not been explored. Because barges move from areas with a high abundance of bigheaded carps to areas monitored for the potential presence of silver carp, we used juvenile silver carp to simulate the barge transport of dead bigheaded carp carcasses, slime residue, and predator feces to determine the potential of these sources to supply DNA to uninhabited waters where it could be detected and misinterpreted as indicative of the presence of live bigheaded carp. Our results indicate that all three vectors are feasible sources of detectable eDNA for at least one month after their deposition. This suggests that current monitoring programs must consider alternative vectors of DNA in the environment and consider alternative strategies to minimize the detection of DNA not directly released from live bigheaded carps.

Zooarchaeology and Taphonomy of the Middle-Upper Paleolithic in Bondi Cave, Republic of Georgia

We present a detailed zooarchaeological and taphonomic study of Bondi Cave, western Georgia, containing Middle Paleolithic and Upper Paleolithic levels. The faunal assemblages are dominated by Caucasian tur (Capra caucasica) and European bison (Bison cf. bonasus). High proportions of specimens bearing cut marks and percussion marks indicate that human activity was the main depositional agent. Carcass transport was selective according to the animal's size. Assemblage characteristics suggest short occupations of the cave by mobile Upper Paleolithic foragers. The general composition of the fauna probably reflects a more open setting for the Upper Paleolithic human occupations in this region, compared to the Holocene.

A model of hunter-gatherer skeletal element transport: The effect of prey body size, carriers, and distance

Zooarchaeologists frequently use the relative abundance of skeletal elements in faunal assemblages in conjunction with foraging theory models to infer subsistence decisions made by prehistoric hunter-gatherers. However, foraging models applied to ethnoarchaeological cases have had variable success linking skeletal transport decisions with foraging predictions. Here, we approach this issue with the well-known Hadza data to statistically model the skeletal element transport decisions in response to distance from the residential hub and the number of carriers available for carcass transport. We compare our modeling approach to the traditional skeletal element utility curves from Binford's work with the Nunamiut, and to the more recently proposed Shannon evenness measure. Our approach, based on standard yet powerful statistical modeling techniques, can help researchers gain increased insight into the prey part transport responses of hunter-gatherers. Our analyses treat individual prey skeletal elements by body size as the response variable. The results of this analysis suggest that utility curves, and the Shannon evenness approach as a proxy for utility curves, are problematic for making statements about prehistoric foraging from zooarchaeological data. Transport distance does not explain a significant portion of small prey (size class 2) skeletal element transport variation. However, distance explains a great deal of transport variation in large prey (size classes 4 and 5). Inferences from skeletal element profiles should be made relative to prey body size and the discard probability of individual elements. Understanding the influence of these variables allows construction of a framework for testing archaeological element profiles against ethnographically derived transport models.