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Is ungulate migration culturally transmitted? Evidence of social learning from translocated animals
Large ungulate migrations occur across continents and inspire curiosity about how these animals know when to leave and where to go. Jesmer et al. took advantage of regional extinctions and reintroductions of several North American ungulate species to determine the role of learning in migrations (see the Perspective by Festa-Bianchet). Reintroduced populations of bighorn sheep and moose did not migrate as historical herds had. However, after several decades, newly established herds were better able to track the emergence of vegetation in the environment and were increasingly migratory. Thus, newly introduced animals learned about their environment and shared the information through social exchange. Science , this issue p. 1023 ; see also p. 972 Bighorn sheep and moose learn their migration routes through culture and experience. Ungulate migrations are assumed to stem from learning and cultural transmission of information regarding seasonal distribution of forage, but this hypothesis has not been tested empirically. We compared the migratory propensities of bighorn sheep and moose translocated into novel habitats with those of historical populations that had persisted for hundreds of years. Whereas individuals from historical populations were largely migratory, translocated individuals initially were not. After multiple decades, however, translocated populations gained knowledge about surfing green waves of forage (tracking plant phenology) and increased their propensity to migrate. Our findings indicate that learning and cultural transmission are the primary mechanisms by which ungulate migrations evolve. Loss of migration will therefore expunge generations of knowledge about the locations of high-quality forage and likely suppress population abundance.
Journal Article
Invasive animal species
\"Foxes, rabbits, mongooses, rats, starlings, turtles, Burmese pythons, and Asian carp are just a few of the invasive animals introduced by people into countries and ecosystems to which they do not belong. This important book describes how these animals are destroying habitats and endangering the lives of native animals, some of which have been brought close to extinction. Students will learn how some arrived accidentally on boats, while others were brought in by people, to be used either as a form of pest control on farms, for hunting or hobbies, or as pets that sometimes get abandoned in the wild by owners. Many native animals, such as raccoons, squirrels, and coyotes have also become invaders in cities, back yards, and homes. Students can research invasive species in their areas and help find ways to stop these wild invaders from taking over the natural habitat.-- Provided by publisher.
Book
Bovine brucellosis - a comprehensive review
Brucellosis is a zoonotic disease of great animal welfare and economic implications worldwide known since ancient times. The emergence of brucellosis in new areas as well as transmission of brucellosis from wild and domestic animals is of great significance in terms of new epidemiological dimensions. Brucellosis poses a major public health threat by the consumption of non-pasteurized milk and milk products produced by unhygienic dairy farms in endemic areas. Regular and meticulous surveillance is essentially required to determine the true picture of brucellosis especially in areas with continuous high prevalence. Additionally, international migration of humans, animals and trade of animal products has created a challenge for disease spread and diagnosis in non-endemic areas. Isolation and identification remain the gold standard test, which requires expertise. The advancement in diagnostic strategies coupled with screening of newly introduced animals is warranted to control the disease. Of note, the diagnostic value of miRNAs for appropriate detection of B. abortus infection has been shown. The most widely used vaccine strains to protect against Brucella infection and related abortions in cattle are strain 19 and RB51. Moreover, it is very important to note that no vaccine, which is highly protective, safe and effective is available either for bovines or human beings. Research results encourage the use of bacteriophage lysates in treatment of bovine brucellosis. One Health approach can aid in control of this disease, both in animals and man.
Journal Article
Beware the Burmese pythons and other invasive animal species
Text organized into posters, newspaper articles, and comics teaches young readers about ten common invasive species from around the world, exploring how they got into new ecosystems, the damage they've caused, how scientists are working to contain them, and what average people can do to help.
Book
Early life ecology of the invasive lionfish
The invasion of the western Atlantic by the Indo-Pacific lionfish (Pterois volitans/miles) is a serious threat to the ecological stability of the region. The early life history of the lionfish remains poorly understood despite the important role that larval supply plays reef fish population dynamics. In this study, we characterized patterns in the horizontal and vertical distributions of larval lionfish collected in the western Caribbean, US Caribbean, and the Gulf of Mexico from 19 ichthyoplankton surveys conducted from 2009-2016. Using generalized additive models (GAMs), we assessed the relative effects of spatiotemporal and environmental variation on the distribution of lionfish larvae. We also examined otoliths to determine larval ages and report the first larval growth rate estimates for this species. Lionfish larvae were present at 7.8% of all stations sampled and our model suggests that lionfish presence is related to sea surface temperature and the lunar cycle. Year and location also strongly affected the larval distribution, likely reflecting the ongoing expansion of the species during our sampling timeframe. Much of the variation in larval lionfish presence remained unexplained, and future studies should incorporate additional environmental factors to improve model predictions. This study improves our understanding of the lionfish life cycle and accentuates the need for further research into the early life history of this invasive species. The design and implementation of effective long-term lionfish control mechanisms will require an understanding of their entire life history.
Journal Article
Abandoned and escaped animals
\"An estimated 70 million feral cats live in the United States alone-decimating bird populations and threatening public health. This informative book investigates the growing populations of \"obligates\"-abandoned pets, now wild and producing feral offspring, and introduced animals that live in urban and urban fringe areas. An examination reveals the impact these animals are having on resources, space, and native species. Additional content focuses on the charities and organizations that help care for and limit the numbers of feral animals\"-- Provided by publisher.
Book
Extinctions and Invasions
Eight thousand years ago, when the sea cut Britain off from the rest of the Continent, the island's fauna was very different: most of the animals familiar to us today were not present, whilst others, now extinct, were abundant. Over the course of millennia humans have manipulated Britain's fauna. For reasons of fear, suspicion, desire, or simply inadvertently, certain species were brought to extinction. In their place new animals were introduced: some transported purposefully by invading populations, others sent as royal gifts from far off lands, whilst several species arrived as stowaways. The story of each is fascinating, telling of the changing and multi-layered relationship between humans and animals. Drawing on new research in the fields of archaeology, ecology and history, this book examines how human society, culture, diet, lifestyles and even whole landscapes were fundamentally shaped by the animal extinctions and introductions that occurred in Britain since the last Ice Age. In its 22 chapters a wide range of mammal, bird, fish, snail and insect species are considered. All of the chapters include new and original research presented by authors who are acknowledged experts on their specific topic. Extinctions and Invasions advances our understanding of Britain's natural history whilst dispelling the myths that have become established in both popular and academic literature. It is written in a style accessible to the general reader, whilst providing the depth of research needed by academic researchers. Extinctions and Invasions provides a valuable single source of information for archaeologists, natural historians and conservation biologists, as well as interested laypeople.
eBook
The Global Distribution and Drivers of Alien Bird Species Richness
Alien species are a major component of human-induced environmental change. Variation in the numbers of alien species found in different areas is likely to depend on a combination of anthropogenic and environmental factors, with anthropogenic factors affecting the number of species introduced to new locations, and when, and environmental factors influencing how many species are able to persist there. However, global spatial and temporal variation in the drivers of alien introduction and species richness remain poorly understood. Here, we analyse an extensive new database of alien birds to explore what determines the global distribution of alien species richness for an entire taxonomic class. We demonstrate that the locations of origin and introduction of alien birds, and their identities, were initially driven largely by European (mainly British) colonialism. However, recent introductions are a wider phenomenon, involving more species and countries, and driven in part by increasing economic activity. We find that, globally, alien bird species richness is currently highest at midlatitudes and is strongly determined by anthropogenic effects, most notably the number of species introduced (i.e., \"colonisation pressure\"). Nevertheless, environmental drivers are also important, with native and alien species richness being strongly and consistently positively associated. Our results demonstrate that colonisation pressure is key to understanding alien species richness, show that areas of high native species richness are not resistant to colonisation by alien species at the global scale, and emphasise the likely ongoing threats to global environments from introductions of species.
Journal Article