Public Health Policy Pillars for the Sustainable Elimination of Zoonotic Schistosomiasis

Schistosomiasis is a parasitic disease acquired through contact with contaminated freshwater. The definitive hosts are terrestrial mammals, including humans, with some Schistosoma species crossing the animal-human boundary through zoonotic transmission. An estimated 12 million people live at risk of zoonotic schistosomiasis caused by Schistosoma japonicum and Schistosoma mekongi, largely in the World Health Organization’s Western Pacific Region and in Indonesia. Mathematical models have played a vital role in our understanding of the biology, transmission, and impact of intervention strategies, however, these have mostly focused on non-zoonotic Schistosoma species. Whilst these non-zoonotic-based models capture some aspects of zoonotic schistosomiasis transmission dynamics, the commonly-used frameworks are yet to adequately capture the complex epi-ecology of multi-host zoonotic transmission. However, overcoming these knowledge gaps goes beyond transmission dynamics modelling. To improve model utility and enhance zoonotic schistosomiasis control programmes, we highlight three pillars that we believe are vital to sustainable interventions at the implementation (community) and policy-level, and discuss the pillars in the context of a One-Health approach, recognising the interconnection between humans, animals and their shared environment. These pillars are: (1) human and animal epi-ecological understanding; (2) economic considerations (such as treatment costs and animal losses); and (3) sociological understanding, including inter- and intra-human and animal interactions.

Vertebral trabecular bone mechanical properties vary among functional groups of cetaceans

Since their appearance in the fossil record 34 Mya, modern cetaceans (dolphins, whales, and porpoises) have radiated into diverse habitats circumglobally, developing vast phenotypic variations among species. Traits such as skeletal morphology and ecologically-linked behaviors denote swimming activity; trade-offs in flexibility and rigidity along the vertebral column determine patterns of caudal oscillation. Here, we categorized 10 species of cetaceans (Families Delphinidae and Kogiidae; N = 21 animals) into functional groups based on vertebral centra morphology, swimming speeds, diving behavior, and inferred swimming patterns. We quantified trabecular bone mechanical properties (yield strength, apparent stiffness, and resilience) among functional groups and regions of the vertebral column (thoracic, lumbar, and caudal). We extracted 6 mm3 samples from vertebral bodies and tested them in compression in three orientations (rostrocaudal, dorsoventral, and mediolateral) at 2 mm min−1. Overall, bone from the pre-fluke/fluke boundary had the greatest yield strength and resilience, indicating that the greatest forces are translated to the tail during caudal oscillatory swimming. Group 1, composed of five shallow-diving delphinid species, had the greatest vertebral trabecular bone yield strength, apparent stiffness, and resilience of all functional groups. Conversely, Group 3, composed of two deep-diving kogiid species, had the least strong, stiff, and resilient bone, while Group 2 (three deep-diving delphinid species) exhibited intermediate values. These data suggest that species that incorporate prolonged glides during deep descents in the water column actively swim less, and place relatively smaller loads on their vertebral columns, compared with species that execute shallower dives. We found that cetacean vertebral trabecular bone properties differed from the properties of terrestrial mammals; for every given bone strength, cetacean bone was less stiff by comparison. This relative lack of material rigidity within vertebral bone may be attributed to the non-weight bearing locomotor modes of fully aquatic mammals.

A modern baseline for the paired isotopic analysis of skin and bone in terrestrial mammals

We present the isotopic discrimination between paired skin and bone collagen from animals of known life history, providing a modern baseline for the interpretation of archaeological isotopic data. At present, the interpretation of inter-tissue variation (Δ (skin–bone) ) in mummified remains is based on comparisons with other archaeological material, which have attributed divergence to their contrasting turnover rates, with rapidly remodelling skin collagen incorporating alterations in environmental, cultural and physiological conditions in the months prior to death. While plausible, the lack of baseline data from individuals with known life histories has hindered evaluation of the explanations presented. Our analysis of a range of animals raised under a variety of management practices showed a population-wide trend for skin collagen to be depleted in 13 C by –0.7‰ and enriched in 15 N by +1.0‰ relative to bone collagen, even in stillborn animals. These results are intriguing and difficult to explain using current knowledge; however, on the basis of the findings reported here, we caution any results which interpret simply on differing turnover rates. We hypothesize that there may be a consistent difference in the routing of dietary protein and lipids between skin and bone, with potentially on-site synthesis of non-essential amino acids using carbon and nitrogen that have been sourced via different biochemical pathways.

Comparison of human and faunal enamel isotopes reveals diverse paleodiet and exchange patterns at the highland Maya Site of Kaminaljuyu, Guatemala

This study provides an isotopic examination of both human and animal paleodiets and mobility patterns at a highland Maya community. Kaminaljuyu, Guatemala, was a large Prehispanic center located in a distinctly cooler, drier setting compared with the majority of Maya sites in the surrounding lowlands. Previous archaeological research at Kaminaljuyu revealed it played an important political and economic role in the Maya region, assisting in the obsidian trade network and maintaining ties with communities as far away as Teotihuacan in central Mexico. By examining the strontium (87Sr/86Sr), carbon (δ13C), and oxygen (δ18O) isotope values from dental enamel of humans and terrestrial mammals at the site, this study provides direct evidence of long-distance animal trade, explores the nature and timing of such activities, and compares highland dietary patterns with faunal studies in the lowlands. Our results indicate that isotopically non-local humans and animals are most frequently found in special and ceremonial contexts, indicating that long-distance movements of people and products were motivated for politically or ritually significant events. Although dietary patterns showed cross-species variation, diets within species were similar between highland and lowland settings.

Application of Environmental DNA (eDNA) Metabarcoding Method to Identify Threatened Sulawesi Mammal Based on 12S rRNA Gene

Species detection and identification is a crucial steps in biodiversity assessment. Traditional methods are often invasive and resource intensive. The number of studies demonstrating successful of eDNA metabarcoding approach in species identification has increased rapidly in recent years. Some of large terrestrial mammals have reportedly utilize natural salt licks as a source of minerals in the diet and its genetic material left in the environment can be used to identify species from this site. An eDNA metabarcoding protocol had been carried out to identify Sulawesi mammals from Adudu natural salt-licks, Nantu Wildlife Reserve, Gorontalo. Environmental DNA were extracted from water samples, Amplicon libraries were prepared by PCR amplification and Illumina MiSeq high throughput sequencing. Reads processing and taxonomic assignment carried out in two bioinformatics packages, PipeCraft-1.0 and OBITools-2.11. Two endangered Sulawesi mammals species had been identified, i.e. lowland anoa (Bubalus depressicornis) and babirusa (Babyrousa babyrussa). The accuracy of mammal species identification using eDNA metabarcoding is affected by rigorous experimental procedures, DNA marker reliability, and availability of reference sequence database.

Systematic Map of Human–Raptor Interaction and Coexistence Research

Global raptor conservation relies on humans to establish and improve interaction and coexistence. Human–wildlife interaction research is well-established, but tends to focus on large-bodied, terrestrial mammals. The scope and characteristics of research that explores human–raptor interactions are relatively unknown. As an initial step toward quantifying and characterizing the state of applied, cross-disciplinary literature on human–raptor interactions, we use established systematic map (scoping reviews) protocols to catalog literature and describe trends, identify gaps and biases, and critically reflect on the scope of research. We focus on the peer-reviewed (refereed) literature germane to human–raptor interaction, conflict, tolerance, acceptance, persecution and coexistence. Based on 383 papers retrieved that fit our criteria, we identified trends, biases, and gaps. These include a majority of research taking place within North America and Europe; disproportionately few interdisciplinary and social research studies; interactions focused on indirect anthropogenic mortality; and vague calls for human behavior changes, with few concrete steps suggested, when management objectives are discussed. Overall, we note a predominant focus on the study of ecological effects from human–raptor interactions rather than sociocultural causes, and suggest (as others have in various conservation contexts) the imperative of human behavioral, cultural, and political inquiry to conserve raptor species.

The first Miocene fossils from coastal woodlands in the southern East African Rift

The Miocene is a key time in the evolution of African mammals and their ecosystems witnessing the origin of the African apes and the isolation of eastern coastal forests through an expanding biogeographic arid corridor. Until recently, however, Miocene sites from the southeastern regions of the continent were unknown. Here we report discovery of the first Miocene fossil teeth from the shoulders of the Urema Rift in Gorongosa National Park, Mozambique, at the southern East African Rift System. We provide the first 1) radiometric age determinations of the fossiliferous Mazamba Formation, 2) reconstructions of past vegetation in the region based on pedogenic carbonates and fossil wood, and 3) description of fossil teeth from the southern rift. Gorongosa is unique in the East African Rift System in combining marine invertebrates, marine vertebrates, terrestrial mammals, and fossil woods in coastal paleoenvironments. The Gorongosa fossil sites offer the first evidence of persistent woodlands and forests on the coastal margins of southeastern Africa during the Miocene, and an exceptional assemblage of fossil vertebrates including new species. Further work will allow the testing of hypotheses positing the formation of a northeast-southwest arid corridor isolating species on the eastern coastal forests from those elsewhere in Africa.

https://orcid.org/0000-0002-8496-3706

A perda e fragmentação de habitats constitui uma das maiores ameaças à fauna, principalmente aos mamíferos terrestres de médio e grande porte. Considerando as ameaças contínuas que os remanescentes de Cerrado sofrem, é essencial realizar inventários de mamíferos em áreas ainda pouco pesquisadas. Para avaliar a riqueza de espécies e a frequência relativa de mamíferos de médio e grande porte foram aplicados os métodos de visualização direta e registro por armadilhas fotográficas. O estudo foi realizado entre fevereiro e agosto de 2020, no Monumento Natural Municipal Serra do Bom Jardim, em Alcinópolis, Mato Grosso do Sul – MS. A partir de um esforço amostral 840 armadilhas-noite e 224 horas de buscas direta, foram registradas 27 espécies de mamíferos nativos, equivalente a 57.4 % das espécies desse grupo presentes no MS. A curva de acumulação de espécies associada com a riqueza estimada (Jackknife-1) indica que a continuidade da amostragem deve adicionar novas espécies. Duas espécies foram responsáveis por mais de 60 % dos registros fotográficos (Tapirus terrestres e Cerdocyon thous). Nosso inventário adicionou três novas ocorrências ao plano de manejo da UC (Didelphis albiventris, Leopardus tigrinus, e Coendou prehensilis). O registro de ocorrência de L. tigrinus por armadilha fotográfica é o primeiro para o estado de MS. Esse é o único carnívoro com ocorrência no Brasil que está ameaçado globalmente. Obtivemos registros de mais de 50 % das espécies ameaçadas de extinção presentes no MS, sem considerar L. tigrinus. Duas delas por exemplo, Ozotoceros bezoarticus e Priodontes maximus, estão entre as espécies mais raras em território sul mato-grossense. Nossos registros contribuem para a execução de medidas de conservação dos mamíferos na UC estudada, que desempenha um papel fundamental para a proteção do corredor Cerrado-Pantanal. MEDIUM AND LARGE SIZED MAMMALS IN PROTECTED AREA AT CERRADO, MATO GROSSO DO SUL, BRAZIL: Habitat loss is one of the greatest threats to fauna, especially for medium to large-sized terrestrial mammals. Considering the continuous threats on Cerrado remnants, it is essential to carry out mammal inventories in areas with low information available. In order to evaluate the species richness and the relative frequency of medium and large mammals, we investigated the area with direct observations and using camera traps. The study was conducted from February to August 2020, in the Serra do Bom Jardim Municipal Natural Monument, in Alcinópolis, Mato Grosso do Sul State (MS). From a sampling effort of 840 trap-nights and 224 hours of direct observations, a total of 27 species of native mammals were registered, representing 57.4 % of medium and large species that occur MS. Species accumulation curve associated with estimated richness (Jackknife-1) indicates that continued sampling would add new species. Two species were responsible for more than 60 % of the photographic records (Tapirus terrestre and Cerdocyon thous). Our survey added three new occurrences to the protected area management plan (Didelphis albiventris, Leopardus tigrinus, and Coendou prehensilis). The occurrence of L. tigrinus is the first record for the state of MS. This is the only globally threatened carnivore in Brazil. We recorded more than 50 % of the endangered species present in MS, besides L. tigrinus. Two of endangered species, Ozotoceros bezoarticus and Priodontes maximus, are among the rarest species in MS. Our study contributes to conservation measures proposed by municipal protected area, which plays a fundamental role for wildlife conservation in the Cerrado-Pantanal corridor.

Systematic map of human-raptor interaction and coexistence research

Global raptor conservation relies on humans to establish and improve interaction and coexistence with raptor species. Human-wildlife interaction research is well-established, but tends to focus on large-bodied, terrestrial mammals. The scope and characteristics of research that explores human-raptor interactions is relatively unknown. As an initial step toward quantifying and characterizing the state of applied, cross-disciplinary literature in human-raptor interactions, we use established systematic map protocols to catalog the literature and describe trends, identify gaps and biases, and critically reflect on the state of the literature. We focus on peer-reviewed literature germane to human-raptor interaction, conflict, tolerance, acceptance, and coexistence. Based on the 383 papers retrieved from the literature that fit our criteria, we identified trends, biases, and gaps. These include a majority of research taking place within North America and Europe; disproportionately few interdisciplinary and social research studies; interactions focused on indirect anthropogenic mortality (poisons and wind turbine collisions); and vague calls for human behavior changes, with few concrete steps suggested, when management objectives are discussed. Overall, we note a predominant focus on the study of ecological effects from human-raptor interactions rather than sociocultural causes and suggest (as others have in various conservation contexts) the imperative of human behavioral, cultural, and political inquiry to conserve raptor species.