The aims and scope of the volume with an overview of the comparative method as applied in studying behavioral ecology and evolution, distinguishing among analogous and homologous features. This chapter briefly orients readers unfamiliar with the discipline of animal behavior to the basic types of causal explanations studied in the field. It then provides an introduction to frameworks for how behavior and conservation might be integrated in principle and in practice, situating subsequent chapters in terms of their biological basis together with applications in wildlife conservation viewed through an evolutionary lens. It outlines how the major domains of behavior concerning foraging, reproduction, and movement raise issues salient to management and policy decisions, foreshadowing challenges with respect to human–wildlife conflicts and global changes in land use and climate.

For a book that attempts to explain how to understand visuals in life sciences, it seems prudent to first explain what we mean by “visual,” even if it may seem quite a common word.

In everyday conversation, “visual” is often used as an adjective and means “relating to seeing or sight,” as in “visual impression” or “visual effect.” In the context of this book, “visual” is used similarly as an adjective, but in addition, and more often, it is used as a noun. As a noun, it refers to the variety of images used in life science communication. For example, photographs are a type of visual commonly used in life science communication, and so are drawings.

The theory of evolution, as espoused by Charles Darwin in The Origin of Species in 1859, was difficult to accept for religious believers whose assumptions about the world were shattered by it, but Darwin’s The Descent of Man, published 12 years later, posed even greater challenges to people who did accept it, and those challenges continue today. It has often been noted that a disorienting consequence of the Enlightenment was to force people to recognize that humans were not created at the center of the universe in the image of God, but instead on a remote dust-speck of a planet, in the image of mold, rats, dogs, and chimps. For the entirety of recorded history, moral beliefs about humans had been based on the idea that people were in some fundamental sense apart from the rest of nature. Darwin disabused us of that notion once and for all. The scientific and social upheaval that has occurred since Darwin has been an extended process of coming to terms with a unification of humans and the rest of the natural world.

Who does not know the most basic fact from the science of genetics, that peas and people reproduce in a similar fashion?

It is taught in high schools. Gregor Mendel discovered the fundamental scientific way that organisms breed, and it works the same way in people as it does in peas. Everyone knows that. They may not remember the specifics, with dominant uppercase A and recessive lowercase a – but they know that humans and peas reproduce basically the same way, because they were taught it, and it’s true.

Now I am certainly not going to try and convince you otherwise. But have you ever actually seen peas reproduce? Thanks to the internet, you can readily see videos of plant breeding. The videos of humans breeding, of course, are posted on more restricted internet sites.

The African buffalo has interacted with human societies for millennia across its vast African range. It is part of the bestiary of the few African imaginaries and mythologies that have managed to reach us. These representations of the species in African cultures seem to have percolated more recently into the imaginaries of European cultures, especially from the angle of hunting and photographic safaris. The buffalo is also at the centre of services and disservices to different actors, providing uses but also generating conflicts in African landscapes, the species being central in so-called Human–Wildlife Conflicts. For animal health services, the buffalo represents in some instances a public enemy, influencing meat trade policies, land uses and boundaries in many parts of the continent. The African buffalo is therefore an emblem of the coexistence between humans and nature in Africa.

Information about the natural world comes from many sources. In controlled experiments, the responses of similar groups to a treatment are compared, and differences in the responses suggest that the treatment may have had an effect. Where controlled experiments would be impossible or unethical studies that compare conditions in two or more similar situations that differ in place or time may be appropriate. Statistical analysis allows investigators to evaluate the probability that observed results are due to chance. Historical records, natural records such as fossils, oral traditions, traditional ecological knowledge, and observations from citizen scientists and parataxonomists are also important. Researchers often develop models to predict how a system behaves under specified conditions. This is useful when a system, such as the Earth’s climate, cannot be observed directly. Science provides a framework within which results can be compared to predictions and conclusions can be modified as new evidence becomes available. Arguments and information about the natural world should be evaluated critically for misleading statements and potential bias.

The stone is still there in the garden. That’s what gets me. It’s not the house itself – houses decay slowly and can be preserved pretty easily, especially in Britain where even an eighteenth-century country house is not “old.” It’s not even the tree behind the house, alive when Charles Darwin still lived in his Down House, now propped up by guywires against inevitable collapse as a kind of totem of the great naturalist’s existence. If you leave the rear exit, the one that takes you to Darwin’s preserved greenhouse and the stunning flora on a pretty path lined in that particular English way of making the perfectly manicured seem somehow “natural,” you might glance to the left and see behind a small iron fence a one-foot-wide stone. A round mill stone or pottery wheel, it was, or appears to have been.

Ever since living beings arose from non-living organic compounds on a primordial planet, more than 3.5 billion years ago, a multitude of organisms has unceasingly flourished by means of the reproduction of pre-existing organisms. Through reproduction, living beings generate other material systems that to some extent are of the same kind as themselves. The succession of generations through reproduction is an essential element of the continuity of life. Not surprisingly, the ability to reproduce is acknowledged as one of the most important properties to characterize living systems. But let’s step back and put reproduction in a wider context, the endurance of material systems.

The view of living systems as machines is based on the idea of a fixed sequence of cause and effect: from genotype to phenotype, from genes to proteins and to life functions. This idea became the Central Dogma: the genotype maps to the phenotype in a one-way causative fashion, making us prisoners of our genes.

“Just the facts, ma’am. Just the facts!” This famous directive by Sergeant Joe Friday – apparently never actually made in this form – is from the television series Dragnet. Unfortunately, while this may be adequate for detecting and solving crime, not so elsewhere. The idea that science is simply a matter of recording empirical experience is hopelessly inadequate and misleading. Science is about empirical experience, but it is about such experience as encountered and interpreted – and with effort and good fortune – as explained by us.

This chapter examines the nature of the research conducted in and on zoos. Much of the research undertaken in zoos is concerned with the behaviour, nutrition, welfare and reproduction of animals. However, work has also been published on the history of zoos, their place in culture, their conservation role, their educational value and the interactions between people and animals in zoos. Historical trends in zoo research are examined along with taxonomic bias in the species studied: most studies involve mammals. Although zoo research is published in a wide range of journals, in recent decades a number of specialist journals have been produced.

There are several ‘enigmatic canid’ species in North America. One of them is the red wolf (Canis rufus, Figure 1.1), and another is the Great Lakes Wolf. Red wolves are seriously endangered, with a re-released population in North Carolina and breeding programmes being the last populations. Red wolves weren’t even studied closely until the 1960s, after having been hunted nearly to extinction in the nineteenth and twentieth centuries.

This chapter serves as an introduction to the book. It discusses the origin of Planet Earth and its Moon, their dependence on the Sun for energy, and the evolution of life on Earth. The evolution of the first living cell seems to have been a single event and all life on Earth is directly derived from this individual primary organism. The first life forms were anaerobic bacteria, but these later gave rise to photosynthesising cyanobacteria, which produced oxygen. The presence of oxygen eventually led to the emergence of aerobic animals and plants. The chapter then details the emergence of the oceans and supercontinents Pangea and Gondwanaland, the eventual break-up of the supercontinents and the development of the varied ecosystems which characterise Planet Earth at the present time.

The Arctic Realm, as here defined, are those terrestrial areas where the average temperature for the warmest month is below 10℃. It therefore includes all of the Arctic Circle including almost all of Greenland, the northern coast of Siberia and northern Scandinavia, northern Alaska, and northern Canada including the high arctic islands. The focal point is of course the Arctic Ocean, the smallest, shallowest and coldest of the world’s oceans and in many ways little more than an estuary of the North Atlantic. It consists of a roughly circular basin generally taken to include the Barents, Beaufort, Chuckchi, East Siberian, Greenland, Kara, Laptev and White seas, along with Hudson Bay and other tributary bodies of water. The latter is connected to the Pacific Ocean by the Bering Strait and to the Atlantic through the Greenland and Labrador seas. The Arctic Realm is bordered by the Nearctic and Palearctic realms to the south, and has affinities to both in terms of its fauna.

The May 2019 IPBES emphasised the scale of the current biodiversity crisis and the need for transformative change, but highlighted that the tools exist to enable this change. Conservation translocation is an increasingly used tool that involves people deliberately moving and releasing organisms where the primary goal is conservation – it includes species reintroductions, reinforcements, assisted colonisations and ecological replacements. It can be complex, expensive, time consuming, and sometimes controversial, but when best practice guidelines are followed it can be a very effective conservation method and a way of exciting and engaging people in environmental issues. Conservation translocations have an important role to play not only in improving the conservation status of individual species but also in ecological restoration and rewilding by moving keystone and other influential species. As the climate continues to change, species with poor dispersal abilities or opportunities will be at particular risk. Assisted colonisation, which involves moving species outside their indigenous range, is likely to become an increasingly used method. It is also a tool that may become increasingly used to avoid threats from the transmission of pathogens. Other more radical forms of conservation translocation, such as ecological replacements, multi-species conservation translocations, and the use of de-extinction and genetic interventions, are also likely to be given stronger consideration within the wider framework of ecological restoration. There have been significant advances in the science of reintroduction biology over the last three decades. However new ways of transferring and sharing such information are needed to enable a wider spectrum of practitioners to have easier access to knowledge and guidance. In the past the biological considerations of conservation translocations have often heavily outweighed the people considerations. However it is increasingly important that socio-economic factors are also built into projects and relevant experts involved to reduce conflict and improve the chances of success. Some level of biological and socio-economic risk will be present for most conservation translocations, but these can often be managed through the use of sensitivity, professionalism, and the application of tried and tested best practice. The role of species reintroduction and other forms of conservation translocations will be an increasingly important tool if we are to restore, and make more resilient, our damaged ecosystems.

On November 24, 1859, the English naturalist Charles Robert Darwin published On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life . In that book (Darwin 1859), he argued that all organisms, living and dead, were produced by a long, slow, natural process, from a very few original organisms. He called the process “natural selection,” later giving it the alternative name of “the survival of the fittest.” This first chapter is devoted to presenting (without critical comment) the argument of the Origin, very much with an eye to the place and role of natural selection. As a preliminary, it should be noted that the Origin, for all it is one of the landmark works in the history of science, was written in a remarkably “user-friendly” manner. It is not technical, the arguments are straightforward, the illustrative examples are relevant and easy to grasp, the mathematics is at a minimum, meaning non-existent. Do not be deceived. The Origin is also a very carefully structured piece of work (Ruse 1979a). Darwin knew exactly what he was doing when he set pen to paper.

For many millennia, humans have gazed up in wonder at the night-time sky. The full panoply of the Milky Way is an awesome sight. The scale of space is immense. Is there life out there somewhere? If so, where, and what form does it take? In the space of a couple of sentences, we’ve already gone from generalized wonder to specific questions. The next step is from questions to hypotheses, or, in other words, proposed answers. Here are two such hypotheses that I’ll flesh out as the book progresses: first, life exists on trillions of planets in the universe; second, it usually follows evolutionary pathways that are broadly similar to – though different in detail from – those taken on Earth.

Forensic DNA typing was developed to improve our ability to conclusively identify an individual and distinguish that person from all others. Current DNA profiling techniques yield incredibly rare types, but definitive identification of one and only one individual using a DNA profile remains impossible. This fact may surprise you, as there is a popular misconception that a DNA profile is unique to an individual, with the exception of identical twins. You may be the only person in the world with your DNA profile, but we cannot know this short of typing everyone. What we can do is calculate probabilities. The result of a DNA profile translates into the probability that a person selected at random will have that same profile. In most cases, this probability is astonishingly tiny. Unfortunately, this probability is easily misinterpreted, a situation we will see and discuss many times in the coming chapters.

In this first chapter we describe the importance of hunting and meat eating to humans and how this has influenced the evolution of the species. This is followed by a brief review of how prevailing ecological conditions influence human’s dependence on plants or animals to survive at different latitudes. We then document which animal species and groups are currently hunted and used for food, discuss the issue of wild meat markets particularly in Africa and set out our current knowledge of rates of wild meat consumption in different parts of the world. The chapter ends with an explanation of why this book has been conceived and how we can use accumulated knowledge on this subject to reduce wild meat exploitation to sustainable levels, by outlining the main pathways that enable us to understand human predatory behaviour and ways of balancing human and wildlife needs in the future.

Between 1967 and 1970, NASA funded four annual conferences, organized through the New York Academy of Sciences, on the Origins of Life. Their format was conversational, reflecting the eminence of the central attendees, including Frank Fremont-Smith, Norman Horowitz, William McElroy, Philip Abelson, Sidney W. Fox, Leslie Orgel, and Stanley Miller.1 A number of those present were already professional mentors or colleagues of Lynn Margulis, or would soon become so – Cyril Ponnamperuma, Elso Barghoorn, J. William Schopf, Joan Oró, and Philip Morrison. Margulis participated in all four meetings and was tasked to edit their transcripts into volumes (published between 1970 and 1973). The co-chair of these gatherings, Norman Horowitz, also happened to be Lovelock’s colleague as the director of the biology section at NASA’s Jet Propulsion Laboratory (JPL). This relationship likely had some role in Lovelock’s invitation to the second Origins of Life meeting in May 1968. His attendance brought about his first encounter with Margulis: “Margulis, as the youngest member present, had the job of rapporteur. … Perhaps the task of reporting everything we said was onerous and she had no time or opportunity to think about it. Certainly, I had no contact or discussion with her at the meeting. My fruitful collaboration with Lynn was not to begin until some time later” (Lovelock 2000: 254).