What is a larva, if it is not what survives of an ancestor's adult, compressed into a transient pre‐reproductive phase, as suggested by Haeckel's largely disreputed model of evolution by recapitulation? A recently published article hypothesizes that larva and adult of holometabolous insects are developmental expressions of two different genomes coexisting in the same animal as a result of an ancient hybridization event between an onychophoran and a primitive insect with eventless post‐embryonic development. More likely, however, larvae originated (...) from late embryonic or early post‐embryonic stages of ancestors with direct development. Evolutionary novelties would thus be intercalary rather than terminal, with respect to the ancestor's ontogenetic schedule. This scenario, supported by current research on holometabolous insects and marine invertebrates with complex life cycles, offers a serious alternative to the traditional scenario (‘what is early in ontogeny is also early in phylogeny’) underlying the current perception of the evolution of genetic regulatory networks. (shrink)

No comprehensive theory of development is available yet. Traditionally, we regard the development of animals as a sequence of changes through which an adult multicellular animal is produced, starting from a single cell which is usually a fertilized egg, through increasingly complex stages. However, many phenomena that would not qualify as developmental according to these criteria would nevertheless qualify as developmental in that they imply nontrivial (e.g., non degenerative) changes of form, and/or substantial changes in gene expression. A broad, comparative (...) approach is badly needed. In the Cnidaria, for example, even the boundary between generations is problematic. Describing their life cycle in terms of metagenesis (alternation between polyp generation and medusa generation) or in terms of metamorphosis (polyp as larva or juvenile) are matters of semantics more than biology. The life cycle of other metazoans, described in textbooks in terms of larva-to-adult metamorphosis, is hardly different from a typical metagenetic life cycle of cnidarians. This applies to holometabolous insects and to marine invertebrates like sea urchins, where most of the larval cells are discarded at metamorphosis. The uncertain temporal and spatial boundaries of individual development are also shown by the widespread lack of a strict correspondence between adult and mature. A comprehensive theory of development should start with a zero principle of “developmental inertia,” corresponding to an indeterminate local self-perpetuation of cell-level dynamics. Indeterminate growth, scale-invariance, segmentation, and regeneration provide examples of developmental dynamics close to that. (shrink)

All insects appear to have a transport lipoprotein in the hemolymph (blood) that is responsible for moving hydrophobic materials through aqueous compartments. This has been called lipophorin because it is believed to be a reversible transport shuttle. Since most insects undergo some degree of metamorphosis from larval stages to the adult, the need to transport hydrophobic materials or the nature of these materials may change in the course of the life span. This is especially marked in the case (...) of the holometabolous insects – those which undergo drastic change of form, e.g. caterpillar‐pupa‐adult moth. We have found that lipophorin undergoes a molecular metamorphosis paralleling that of the insect. (shrink)

While seeking novel food sources to feed the increasing population of the globe, several alternatives have been discussed, including algae, fungi or in vitro meat. The increasingly propagated usage of farmed insects for human nutrition raises issues regarding food safety, consumer information and animal protection. In line with law, insects like any other animals must not be reared or manipulated in a way that inflicts unnecessary pain, distress or harm on them. Currently, there is a great need for (...) research in the area of insect welfare, especially regarding species-specific needs, health, farming systems and humane methods of killing. Recent results from neurophysiological, neuroanatomical and behavioral sciences prompt caution when denying consciousness and therefore the likelihood of presence of pain and suffering or something closely related to it to insects. From an animal protection point of view, these issues should be satisfyingly solved before propagating and establishing intensive husbandry systems for insects as a new type of mini-livestock factory farming. (shrink)

Much insect sounding is beyond the limits of typical human hearing ability. This sonic separation is exacerbated by a socialized narrative of fear and avoidance of insects in many western societies. With the use of audio technologies to expand our senses, we can embrace opportunities to get to know sensory and communicative insect sound-worlds beyond our own. Ecological sound art – sound art that has an environmentalist intent – is a tangible and accessible means of listening to these sounds. (...) In the series Built Hidden Soundscapes, the primary author (Schonberg) composes imagined soundscapes existing solely of sounds that are beyond the limits of typical human hearing ability. In this article we introduce two compositions in this series, Reserva Florestal Adolpho Ducke and Pipeline Road. These compositions offer a temporary expansion of our aural senses that can increase listeners’ awareness of cryptic insect existences/ecologies. We suggest that this listening practice might prompt future auralization (sounding or hearing in the mind) of insect sound for the listener. (shrink)

Study of the multiplicity of interactions between invertebrate hosts and their parasites helps to define the aspects of the host immune systems that have ecological and evolutionary significance. Such study, however, reveals how much is yet unknown. For instance, the costs of mounting an immune response, the nature of the long-lasting protection sometimes attained, and the high degree of specificity observed in certain hosts are phenomena that still await full explanation. An additional puzzle is the high degree of specificity achieved (...) in light of the apparent low degree of specificity in the recognition and effector mechanisms of insect immune systems. Furthermore, while protective immunity is typically associated with vertebrate adaptive immune systems, invertebrates may have analogous capacities, whose nature is still largely unknown. This review will illustrate how the traditional host-centred view of immune defence can be usefully extended by taking account of parasite immune evasion strategies and the variation that such strategies create in the observed outcomes of infection. BioEssays 27:1026–1034, 2005. © 2005 Wiley Peiodicals, Inc. (shrink)

Several groups of large DNA viruses successfully utilise the rich resource provided by insect hosts. Defining the mechanisms that enable these pathogens to optimise their relationships with their hosts is of considerable scientific and practical importance, but our understanding of the processes involved is, as yet, rudimentary. Here we describe an informatics-based approach that uses comparison of viral genomic sequences to identify candidate genes likely to be specifically involved in this process. We hypothesise that such genes should satisfy two essential (...) criteria, namely, that they should be (i) present in those members of a virus family that infect insects, but absent from those that infect other hosts, and (ii) found in at least two unrelated taxa of insect viruses. These criteria currently identify six groups of viral genes, including one that encodes the fusolin/gp37 proteins. Demonstration that the fusolin/gp37 proteins can enhance oral infectivity of insect viruses provides a primary validation of this approach to the examination of insectvirus relationships. BioEssays 23:184–193, 2001. © 2001 John Wiley & Sons, Inc. (shrink)

This paper explores the idea that many “simple minded” invertebrates are “natural zombies” in that they utilize their senses in intelligent ways, but without phenomenal awareness. The discussion considers how “first-order” representationalist theories of consciousness meet the explanatory challenge posed by blindsight. It would be an advantage of first-order representationalism, over higher-order versions, if it does not rule out consciousness in most non-human animals. However, it is argued that a first-order representationalism which adequately accounts for blindsight also implies that most (...) non-mammals are not conscious. The example of the honey bee is used to illuminate these claims. Although there is some reason to think that bees have simple beliefs and desires, nevertheless, their visually-mediated cognizing is comparable to that of an animal with blindsight. There is also reason to think that the study of blindsight can also help determine how consciousness is distributed in the animal world. (shrink)

Recent trends in agriculturalresearch and development emphasize the need forfarmer participation. Participation not onlymeans farmers' physical presence but also theuse of their knowledge and expertise.Understanding potentials and drawbacks of theirlocal knowledge system is a prerequisite forconstructive collaboration between farmers,scientists, and extension services.An ethnoentomological study, conducted in aTharu village in Nepal, documents farmers'qualitative and quantitative knowledge as wellas perceptions of insects and pest management,insect nomenclature and classification, andissues related to insect recognition and localbeliefs. The study offers a basis to improvepest (...) management programs in terms of efficacyand acceptance. It demonstrates, for instance,that a concept of pests and beneficials isvirtually missing in traditional farmingcommunities and that the Tharu folkclassification profoundly differs from thescientific classification, but is not radicallydifferent from other folk entomologicalsystems. Insects belong to the taxa calledkiraa consisting of arthropods andnon-arthropods that interact with humans. Theyare classified in several overlappinghierarchies where locomotion and human impactplay major roles while morphological criteriaare almost irrelevant. Recognition ofkiraa, however, is dominated by agriculturalaspects followed by physiological-behavioral,ecological, and human-directed features.Morphological criteria play a minor role. Innomenclature, however, the insects' physicalappearance is more important than otherfeatures. The study further shows that male andfemale farmers have different perceptions ofkiraa.The insect-related knowledge system of theTharu has prevented farmers from using modernpesticides in the past. In the course ofmodernization, however, some aspects of theirknowledge system could become obsolete andprove disadvantageous to their livelihood andagro-ecosystems. (shrink)

Among one of the main inspirations for the research behind this Special Issue is Jussi Parikka’s 2010 book Insect Media: An Archeology of Animals and Technology. In this interview, the guest editors, Nina Mangalanayagam and Louise Wolthers, ask Professor Parikka to revisit some of the book’s core issues in relation to digital photography and the current media landscape in general. The conversation also revolves around artificial intelligence (AI), bugs, mimicry, contemporary art as well as scale and operational images, which reflect (...) Parikka’s recent research. (shrink)

This essay considers insects’ place-making powers in history of science topics. Insects have co-shaped the geographies of knowledge production throughout history in three primary dimensions: through their size, density, and multiplane existence. Insects’ miniature worlds have helped humans to create trans-scale analogies. Their spatial transgression and swarming capacity have overwhelmed people, including field researchers, contributing to the making of the places where science is produced. Finally, insects’ “ontologically alien” ways of engaging with environments (e.g., flying and (...) living underground) have offered valuable material for humans’ imaginings of their own realities. By prioritizing insects’ own spatial characteristics, this tripartite typology of human/insect entanglements intends to spur new ways of writing histories of science that engage with space and place. (shrink)

Buddhist texts generally prohibit the killing of all sentient beings. This is certainly the case in vinaya texts, which contain strict guidelines on the preservation of all human and animal life. When these vinaya texts were translated into Chinese, they formed the core of Buddhist behavioural codes, influencing both monastic and lay followers. Chinese vinaya masters, such as Daoxuan?? and Yijing??, wrote extensive commentaries and accounts, introducing Indian concepts into the Chinese environment. In this paper, we focus on an often (...) neglected aspect of inflicting harm on sentient beings: namely, the injury that may be caused to some of the world’s smallest animals — insects. Some insects produce economically valuable products, such as silk and honey; others, such as mosquitoes and bedbugs, are annoying or dangerous; and still others are innocent victims of essential human activities, such as earthworms that are killed when farmland is tilled. Yet, all of these are sentient beings that — according to Buddhist principles — should not be harmed or killed. What this implies for Chinese vinaya masters, and especially the highly influential Daoxuan, is the core question of this paper. As we will see, their responses are mixed, but they always attempt to remain true to the basic principles of Buddhism. (shrink)

Insects factored as ‘symbols of instinct’, necessary as a rhetorical device in the boundary work of early social psychology. They were symbolically used to draw a dividing line between humans and animals, clarifying views on instinct and consciousness. These debates were also waged to determine if social psychology was a subfield of sociology or psychology. The exchange between psychologist James Mark Baldwin and sociologist Charles Abram Ellwood exemplifies this particular aspect of boundary work. After providing a general background of (...) the debates, I turn specifically to the writings of Baldwin and Ellwood between 1890 and 1936, tracing the use of insects as ‘symbols of instinct’. (shrink)

Among the many obscure sects of sexual fetishism, few remain as perplexing as that of the “crush freaks,” who are aroused by the sight of an insect exploded beneath a human foot. Moving beyond the glib discussions of those entomologists and sexologists who classify this fetish as a subset of foot worship and/or macrophilia, I propose an analysis of the crush freaks through the writings of French thinker Georges Bataille. Employing Bataille’s notions of sacrificial eroticism and mysticism to approach the (...) religio-sexual dimensions of crush freakism, I argue that these practices are best understood as ambivalent manifestations of technophilia . More specifically, crush freakism, I submit, devolves on a violent literalization of the analogies between insects and machines. (shrink)

1. Insect sampling for the purpose of measuring biodiversity – as well as entomological research more generally – largely assumes that insects lack consciousness. Here, we briefly present some arguments that insects are conscious and encourage entomologists to revisit their ethical codes in light of them. 2. Specifically, we adapt the Three Rs, guidelines proposed in 1959 by WMS Russell and RL Burch that have become the dominant way of thinking about the ethics of using animals in research. (...) 3. The Three Rs specify the need to replace, reduce, and refine the use of animals in research, yet have received little attention in entomological circles, which is perhaps unsurprising given that Russell and Burch explicitly excluded invertebrates from their purview. 4. As a specific case, we consider issues of suffering and bycatch in the use of Malaise traps for insect sampling. 5. While we do not claim that entomologists have an obligation to adopt the Three Rs framework wholesale, we do suggest that there is reason to adopt it in a modified form to mitigate moral risk especially in the context of conservation. (shrink)

Social insects show us very little about the evolution of complex human society. As more relevant literature demonstrates, ultrasociality is a cause rather than an effect of human social evolution.

This article outlines the rationale for a molecular genetic study of social behavior, and explains why social insects are good models. Summaries of research on brain and behavior in two species, honey bees and fire ants, are presented to illustrate the richness of the behavioral phenomena that can be addressed with social insects and to show how they are beginning to be used to study genes that influence social behavior. We conclude by considering the problems and potential of (...) this emerging field. (shrink)

Baculovirus vectors have proven useful in producing high levels of biologically active eukaryotic proteins and providing cellular fractions which are enriched in the protein of interest. Expression occurs in infected insect cells which also provide a suitable environment for posttranslational modification and folding of the protein product. Stable baculovirus vectors can be constructed rapidly with a minimum of viral manipulation.

In response to a bacterial infection, insects launch an array of countermeasures. Among these are the antibacterial proteins, which effectively lyse bacteria or are bacteriostatic. These proteins were generally assumed to be restricted to insects, yet recent information has shown some homologous counterparts in verte brates, including humans. Recent data have revealed that at least some of these proteins can also act against eukaryotic cells, including human infectious Parasites The latter activities have opened up new possibilities for disease (...) control. (shrink)

In The Insect-Populated Mind, author David Spooner proposes a close connection between aspects of insect evolution and the human intellect.

The binary categories of harm and benefit have often shaped how historians frame discussions of insects. Scientists also leverage the binary framing of insects as tools and targets to carry out their work, especially in the development of biological technologies for pest control. This essay emphasizes how binaries function in scientific practice. Two case studies spanning from the twentieth century to the recent past illustrate the shift away from chemicals in pest management and, in doing so, show the (...) instability of binary categories over the longue durée. Noticing “ambivalent insects” affords a way to widen narrative options and identify new opportunities for investigating insect histories. (shrink)

Drawing on a scene in J.M.G. Le Clézio's novel Terra Amata, which tells the story of the instincts of a small boy, the minute sensoria of some bugs and a cosmic catastrophe, this essay demonstrates the ambivalence around insects in animal studies, their contingent location in psychoanalysis and the conundrums they place in ethical philosophy. By reading Le Clézio's tale through Uexküll, Freud, Dodds and Stengers we argue for more nuanced, imbricated and critical connections between ethology, psychoanalysis and ethics. (...) These connections become imperatives in the face of the current environmental crisis, where we urgently need to attend to co-affecting relations that are too distant or proximate, tiny or vast to register as familiar sentient states or ethical feelings. In the process we demonstrate the performative dimensions of what we call the entomological imagination – present in the strange proximity of child and bugs, the powerful unthinking god, the indifference of the insects to human commands, and the infinitesimal catastrophe in Le Clézio's story – that facilitates an epistemic fluidity required for a contemporary understanding of ecologies. (shrink)

Proponents of entomophagy have argued that the farming of insects offers many advantages when contrasted with more traditional farming practices. This article explores the place of insect farming within a wider Christian food ethic and argues that insect farming has much to recommend it. However, through exploring the role of animal agriculture within the ideological structures of anthropocentrism, a more ambiguous picture of the ethics of insect farming emerges. This belies a simple endorsement or denunciation of insect farming as (...) an ethical alternative to the farming of larger animals. Moreover, the example of insect farming reveals that Christian food ethics needs to radically reimagine the entire food provisioning system if it is to inculcate substantive change in human relationships with nonhuman animals. (shrink)

Among the many obscure sects of sexual fetishism, few remain as perplexing as that of the “crush freaks,” who are aroused by the sight of an insect exploded beneath a human foot. Moving beyond the glib discussions of those entomologists and sexologists who classify this fetish as a subset of foot worship and/or macrophilia, I propose an analysis of the crush freaks through the writings of French thinker Georges Bataille. Employing Bataille’s notions of sacrificial eroticism and mysticism to approach the (...) religio-sexual dimensions of crush freakism, I argue that these practices are best understood as ambivalent manifestations of technophilia (sexual arousal associated with machinery). More specifically, crush freakism, I submit, devolves on a violent literalization of the analogies between insects and machines. (shrink)

In their target article, Mikhalevich & Powell (M&P) argue that we should extend moral protection to arthropods. In this commentary, we show that there are some unforeseen obstacles to applying the sort of individualistic welfare-based ethics that M&P have in mind to certain arthropods, namely, insects. These obstacles have to do with the fact that there are often many more individuals involved in our dealings with insects than our ethical theories anticipate, and also with the fact that, in (...) some sense, some insects count as more than an individual and, in another sense, they sometimes count as less than an individual. (shrink)

The last decade has seen a dramatic increase in interest in the extent to which morphological evolution depends on changes in regulatory pathways. Insects provide a fertile ground for study because of their diversity and our high level of understanding of the genetic regulation of development in Drosophila melanogaster. However, comparable genetic approaches are presently possible in only a small number of non‐Drosophilid insects. In a recent paper, Hughes and Kaufman(1) have used a new methodology, RNA interference, in (...) the milkweed bug, Oncopeltus fasciatus, to phenocopy the effects of mutations in Hox genes. RNA interference involves the injection of double‐stranded RNA of the same sequence as the relevant mRNA resulting in a depletion of that transcript.(2) Hughes and Kaufman focused on the gnathal segments, which elaborate specialized appendages important to feeding. Their results indicate that gnathal adaptations in this bug are correlated with changes in Hox gene functions and interactions. BioEssays 23:379–382, 2001. © 2001 John Wiley & Sons, Inc. (shrink)

Jung’s advance, for Deleuze, must lie in this identification of a « problematic » zone of human intelligence, through which the instinctual form of consciousness can return. A gap is opened up for the return of an « instinct devenu désintéressé, conscient de lui-même, capable de réfléchir sur son objet et de l’élargir indéfiniment ».

A number of (insect) parasitoids have been found to avoid superparasitism, i.e., these parasitoids distribute their eggs more evenly over the available hosts than might be expected from chance only. By doing so each parasitoid individual ensures a greater probability of survival for its offspring as a result of a reduced within-host-competition.Recently a number of mathematical models have been developed, describing the distribution of the parasitoid eggs in the hosts. This paper gives a survey of these models, placing them within (...) one and the same mathematical framework. An essential conceptual distinction, neglected up to now, emerges: parasitoids can either react to the number of previous visits to a particular host, or they can react to the number of eggs already present in that host. (shrink)

Insects and ‘the swarm’ as metaphors and objects of research have inspired works in the genres of science fiction and horror; social and political theorists; and the development of war-fighting technologies such as ‘drone swarms’, which function as robot/insect hybrids. Contemporary developments suggest that the future of warfare will not be ‘robots’ as technological, individualised substitutions for idealised (masculine) warfighters, but warfighters understood as swarms: insect metaphors for non-centrally organised problem-solvers that will become technologies of racialisation. As such, contemporary (...) feminist analysis requires an analysis of the politics of life and death in the insect and the swarm, which, following Braidotti (2002), cannot be assumed to be a mere metaphor or representation of political life, but an animating materialist logic. The swarm is not only a metaphor but also a central mode of biopolitical and necropolitical war, with the ‘terrorist’ enemy represented as swarmlike as well. In analysing the relations of assemblage and antagonism in the war ontologies of the drone swarm, I seek inspiration from what Hayles (1999, p. 47) describes as a double vision that ‘looks simultaneously at the power of simulation and at the materialities that produce it’. I discuss various representations and manifestations of swarms and insect life in science/speculative fiction, from various presentations of the ‘Borg’ in Star Trek (1987–1994, 1995–2001, 1996), Alien (1979) and The Fly (1958, 1986) to more positive representations of the ‘becoming-insect’ as possible feminist Utopia in Gilman's Herland (2015 [1915]) and Tiptree's Houston, Houston, Do You Read? (1989 [1976]). Posthuman warfare also contains the possibilities of both appropriating and rewriting antagonisms of masculine and feminine in the embodiment of the subject of war in the swarm. This piece seeks to analyse new ways of feminist theorising of the relations of power and violence in the embodiment of war as the swarm. (shrink)

It has become increasingly clear that social learning and culture occur much more broadly, and in a wider variety of animal communities, than initially believed. Recent research has expanded the list to include insects, fishes, elephants, and cetaceans. Such diversity allows scientists to expand the scope of potential research questions, which can help form a more complete understanding of animal culture than any single species can provide on its own. It is crucial to understand how culture and social learning (...) present in different communities, as well as what influences community structure and culture may have on one another, so that the results across these different studies may most effectively inform one another. This review presents an overview of social learning in species across a spectrum of community structures, providing the necessary infrastructure to allow a comparison of studies that will help move the field of animal culture forward. (shrink)

Thoreau believed that we can learn how to live by observing nature, a view that appeals to modem environmentalists. This doctrine is exemplified in Thoreau’s use of insect analogies to illustrate how humans, like butterflies, can be transformed from the “larval” stage, which relates to the physical world through consumption, to a “perfect” state in which consumption is less important, and in which freedom and contemplation are the ends of life. This transformational idea rests upon a theory of dynamic dualism (...) in which the animal and the spiritual self remain in tension, but in which the “maturity” of the individual-transcendence of economic demands as imposed by society-emerges through personal growth based on observation of nature. Thoreau’s dynamic theory of value, and its attractiveness to environmentalists, explains why environmentalists reject the mainstream, neoclassical economic paradigm. This paradigm accepts consumer preferences as “givens” and treats these preferences as thesource of all value in their model. Because Thoreau insists that there is value in transformations from one preference set to another, the neoclassical paradigm cannot capture this central value, and cannot account for the environmentalists’ emphasis on public “education” to reduce consunlptive demands of humans on their environment. (shrink)

This text focuses on how to think the visual culture of disappearance – more closely, disappearance of animals. It takes as its starting point the Ernst Jünger novel The Glass Bees from 1957 in order to start an excavation into obsolescence, animals and the ecological crisis. The aesthetic themes of visibility/invisibility are entangled with the ecological questions of disappearance and pollution. This sort of media ecological question is unravelled, furthermore, with examples concerning the mass extinction of bees, also discussed in (...) Lenore Malen's video installation The Animal That I Am (2009–10). In this way, it argues for a media theoretical understanding of the visual culture of ecocrisis as well as the complex question of epistemology of such a visibility/invisibility. (shrink)

Insect molting is elicited by a class of polyhydroxylated steroids, ecdysteroids, that originate in the prothoracic glands. Ecdysteroid synthesis in the prothoracic glands is controlled in large measure by a peptide hormone from the brain, prothoracicotropic hormone (PTTH), which exists in two forms and is released into the general circulation as a result of environmental and developmental cues. The means by which PTTH activates the prothoracic glands has been examined at the cellular level and the data reveal the involvement of (...) cAMP, calcium, calmodulin, cAMP‐dependent protein kinase and the ultimate phosphorylation of a 34 kDa protein tentatively identified as ribosomal protein S6. (shrink)