87Sr/86Sr and 14C evidence for peccary (Tayassuidae) introduction challenges accepted historical interpretation of the 1657 Ligon map of Barbados

Contemporary West Indian biodiversity has been shaped by two millennia of non-native species introductions. Understanding the dynamics of this process and its legacy across extended temporal and spatial scales requires accurate knowledge of introduction timing and the species involved. Richard Ligon’s 17th century account and celebrated map of early colonial Barbados records the translocation of several Old World species to the island in the post-contact era, including pigs (Sus scrofa) believed to have been released by passing sailors the century prior. Here we challenge this long-accepted historical narrative, presenting evidence that Ligon’s “pigs” were in fact peccaries, a New World continental mammal often confused with wild boars. We document the first recorded instance of non-native peccary (Tayassuidae) on Barbados based on a securely identified mandibular specimen from a historic archaeological context. Results of specimen 87Sr/86Sr and AMS radiocarbon assays, along with newly reported data from Sr isotope environmental analyses, indicate a local origin dating to AD 1645–1670/1780–1800. These data support the presence of living peccary on Barbados some time during the first 175 years of English settlement, which, based on review of historical and archaeological data, most likely arises from 16th century peccary introduction from the Guianas/Trinidad by the Spanish or Portuguese. We argue dimorphic representations of “pigs” on Ligon’s map reflect the co-occurrence of peccary and European domestic swine on historic Barbados. Our findings overturn conventional history and provide greater taxonomic and chronological resolution for Caribbean bioinvasion studies, helping to refine our understanding of potential ecological impacts. In addition, the new bioavailable 87Sr/86Sr data for Barbados reported here advance current efforts toward mapping the Caribbean Sr isoscape

No Pig Atoll: Island Biogeography and the Extirpation of a Polynesian Domesticate

The significance of the domestic pig, Sus scrofa, to prehistoric Polynesians is hinted at by its inclusion among the species that they transported with them as they colonized Oceania. However, archaeological data reveal a pattern of pig distribution far more extensive in prehistory than at historic contact. Domestic mammal extirpation is a phenomenon apparently unique to prehistoric Polynesia. Although well recognized, the local extinction of domestic pigs in Polynesia prior to European contact has yet to be satisfactorily explained. Earlier accounts attributed the patchy distribution of pigs across the Island South Pacific to intentional extermination by their Polynesian keepers. More recent approaches seek to understand the disappearance of these animals within a biogeographic and ecological framework. Here, I test the hypothesis that the success of pig husbandry is correlated with ecological variables and demonstrate that the likelihood of pig extinction increases with decreasing island size. KEYWORDS: Polynesia, domestic animals, pigs, island biogeography, extinction

Pre-Columbian Amerindian lifeways at the Sabazan site, Carriacou, West Indies

Recent excavations at the Ceramic Age village site of Sabazan on Carriacou, Grenada, indicate long-term occupation spanning AD 400 to 1400. One of the earliest settlements in the Grenadines Archipelago, Sabazan's chronology corroborates late Saladoid colonization of the region with the timing of major developments at this location supported by a robust chronology of 26 radiocarbon assays. Investigation of deep, stratified midden deposits yielded abundant ceramic, shell, and stone artifacts, faunal remains, and burial and domestic features. Zooarchaeological evidence indicates a heavy reliance on marine resources and a well-developed tuna (Scombridae, Thunnini) fishery. While data point to sustainable resource exploitation over a millennium, shifts in foraging strategies are evident, including declines in the fish catch and increasing reliance on large or easily acquired mollusks, particularly queen conch (Lobatus gigas) and nerites (Nerita spp.). These trends may be driven by the greater aridity and warmer sea surface temperatures of the Medieval Warm Period (ca AD 900–1300). Exotic artifacts and the remains of introduced mammals at Sabazan provide evidence for inter-island and continental interactions. Here, I synthesize these findings and their significance for reconstructing West Indian colonization, tracing exchange and interaction networks, and understanding human ecodynamics and long-term adaptation to small island ecosystems

The beasts at large – perennial questions and new paradigms for Caribbean translocation research. Part I: Ethnozoogeography of mammals

While researchers have long appreciated that mammal introductions were an important aspect of Amerindian-environment interaction in the prehistoric Caribbean, persistent questions about dispersal routes, animal management practices, possible domestication, and ritual use remain unresolved. In this three-article series, offered as a model approach for prehistoric translocation studies, I review the present state of knowledge on pre-Columbian Caribbean mammal translocations, focusing on three fundamental areas: (1) ethnozoogeographic distributions; (2) the sociocultural significance of translocated fauna; and (3) the ecological impact of introduced species. Here, in Part I, I consider species introduction patterns in relation to dispersal modes, the need to distinguish live introductions from the import of animal products, and the importance of direct-dating specimens to establish translocation chronology. In subsequent papers I explore topics II and III, advocating for a holistic approach to translocation research that integrates all three investigative areas to address larger questions about the role of introduced mammals in island society and ecology and their impact on human adaptation to the landscape. This first paper provides foundations for an ensuing final discussion in which I argue that intentional faunal translocation is sufficiently robust as a behavioural phenomenon across time and space to warrant theoretical treatment from an evolutionary perspective

Impact of analytic protocols on archaeofish abundance, richness, and similarity: a Caribbean-Pacific crossover study

Standing in notable contrast to the practice of other regions, past archaeological fish studies in the tropical Pacific and New Zealand have commonly restricted analysis to a set of five paired cranial elements and “special bones”. This method has been critiqued for reducing taxonomic richness and altering relative abundances, with consequences for fishing, dietary, and paleoecological reconstructions. Here, I assess whether these issues hold true for a Caribbean fish assemblage from the prehistoric site of Sabazan (AD 400-1400), Carriacou, Grenada. Analytic results obtained using the restricted element method are compared to those based on analysis of all potentially diagnostic bones. Building on previous critiques, I investigate the significance of observed discrepancies in relation to sample size effects. Tests of statistical significance and a similarity index are employed to evaluate and quantify the impact of the restricted analytic method for different screen-size fractions (6.4 and 1.6 mm) and quantitative units (NISP and MNI). Results show varying effects in the interaction of these variables, but indicate overall that the restricted element method does not provide taxonomic richness and abundance information comparable to that of an expanded analytic approach. I consider the larger implications of these findings for the identification of certain taxa, such as tunas (Scombridae), herrings (Clupeidae), and jacks and scads (Carangidae), the detection of net fishing, and the exploitation of pelagic fisheries. Despite the unreliability of this method, I conclude that there is a role for expedient methods, provided these are carefully evaluated prior to implementation

Though she be but little: resource resilience, Amerindian foraging, and long-term adaptive strategies in the Grenadines, West Indies

Because small islands are frequently associated with spatially heterogeneous, biodiverse marine environments that readily exceed the productive capacity of their associated terrestrial habitat, it has been argued that these were attractive settlement locations for people due to the rich aquatic resource base they provided. I examine this proposition for the small West Indian island of Carriacou (32 km), situated in the Grenadines micro-archipelago, in light of recent zooarchaeological findings for two of its major archaeological sites, Sabazan and Grand Bay, where a millennium of sustainable marine foraging is evidenced. While reliance on abundant marine resources clearly contributed to the long-term occupation of Sabazan and Grand Bay, fine-grained analysis of the fish and invertebrate remains suggests that abundance alone does not explain settlement persistence. I argue that the key to understanding the lengthy prehistoric occupation of Grand Bay and Sabazan lies in the structure of its marine environments, especially the functional and response diversity of targeted prey, and the flexibility of Amerindian foraging strategies. Settlement viability on Carriacou did not rest solely on the importance of marine resource extraction, but more specifically on the resilience of the marine environments exploited and the behavior of foragers in relation to this

Continental connections and insular distributions: deer bone artifacts of the precolumbian West Indies - a review and synthesis with new records

The remains of non-native deer (Cervidae) have been sparsely recorded in Amerindian archaeological sites of the West Indies, but evidence indicates the presence of at least two genera, white-tailed deer (Odocoileus) and brocket deer (Mazama), during the precolumbian era known as the Ceramic Age (ca. 500 BC-AD 1500). Due to underreporting of finds and lack of regional integration of existing records, however, the West Indian distribution of cervid remains and their cultural importance are not well understood. Here, I synthesize records for unmodified and modified deer bone from 29 archaeological sites on seven islands in the precolumbian island Caribbean with descriptions for four new records of deer bone artifacts from Carriacou and Grenada. I discuss taxonomic attribution issues, evidence for manufacturing techniques, and the utilitarian and symbolic significance of deer bone artifacts. Particular attention is given to proportions of worked and unworked bone, element diversity, and skeletal part representation as a means to distinguish the introduction of living deer from the introduction of carcass products. The evidence presented here is consistent with island Amerindians importing cervid bone as finished artifacts or raw material for tool and ornament manufacture rather than live animals. This study enhances our understanding of the ways in which Amerindians were engaged in exchange networks based on the movement of exotic goods between the West Indies and continent. More broadly, it contributes to conceptual methods for distinguishing the transfer of body parts from the translocation of live animals in studies of exotic animal dispersal by humans

Prehistoric migration in the Caribbean: past perspectives, new models and the ideal free distribution of West Indian colonization

Historically, archaeologists have pursued two basic approaches to prehistoric Caribbean colonization: those relying on historical narratives and those informed by theoretical modelling. With few exceptions, the latter have not been widely employed. Here, we introduce a behavioural ecology model used in Pacific archaeology, the ideal free distribution (IFD), to understand Caribbean migration and island settlement as a form of adaptive behaviour. We assess the sequences of Ceramic Age (post-2500 bp) colonization and overall prehistoric island colonization for fit against the predictions of the IFD using terrestrial net primary production and island area as measures of habitat suitability. We conclude that certain aspects of Caribbean colonization - the initial settlement of larger, high-quality-habitat islands and temporal pauses between migration pulses - are consistent with the IFD. Model inconsistencies observed for Ceramic Age colonization, however, are best explained in terms of the limitations of Pre-Columbian seafaring and territorial behaviour on the part of pre-existing Archaic occupants