Endocrine Control of Insect Polyphenism

Hartfelder, Klaus

doi:10.1016/b0-44-451924-6/00045-4

Cited by 80 publications

(16 citation statements)

References 360 publications

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“…JH is generally known to have "status-quo" functions in growth and molting during postembryonic development, as the name indicates (Truman & Riddiford, 2002). In addition to the control of developmental timing (i.e., molting), JH also plays multiple roles controlling insect polyphenisms (Hartfelder & Emlen, 2005;Nijhout, 1994). It is known that there are variations of juvenile hormone molecules (Nijhout, 1994).…”

Section: Introductionmentioning

confidence: 99%

Juvenile hormone as a physiological regulator mediating phenotypic plasticity in pancrustaceans

Miura

2018

Dev Growth Differ

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Phenotypic plasticity and polyphenism, in which phenotypes can be changed depending on environmental conditions, are common in insects. Several studies focusing on physiological, developmental, and molecular processes underlying the plastic responses have revealed that similar endocrine mechanisms using juvenile hormone (JH) are used to coordinate the flexible developmental processes. This review discusses accumulated knowledge on the caste polyphenism in social insects (especially termites), the wing and the reproductive polyphenisms in aphids, and the nutritional polyphenism and sexual dimorphism in stag beetles. For the comparison with non‐insect arthropods, extensive studies on the inducible defense (and reproductive polyphenism) in daphnids (crustacean) are also addressed. In all the cases, JH (and methyl farnesoate in daphnids) plays a central role in mediating environmental stimuli with morphogenetic processes. Since the synthetic pathways for juvenoids, i.e., the mevalonate pathway and downstream pathways to sesquiterpenoids, are conserved across pancrustacean lineages (crustaceans and hexapods including insects), the evolution of developmental regulation by juvenoids that control molting (ecdysis) and metamorphosis is suggested to have occurred in the ancestral arthropods. The discontinuous postembryonic development (i.e., molting) and the regulatory physiological factors (juvenoids) would have enabled plastic developmental systems observed in many arthropod lineages.

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Section: Introductionmentioning

confidence: 99%

Juvenile hormone as a physiological regulator mediating phenotypic plasticity in pancrustaceans

Miura

2018

Dev Growth Differ

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“…J uvenile hormones (JHs) are acyclic sesquiterpenoid hormones that regulate important physiological and developmental processes among arthropods, including metamorphosis, moulting, growth, reproduction, sex and caste determination [1][2][3][4][5][6][7] . As exposure of JHs to animals can easily deflect developmental pathways, JHs are well studied in crustaceans for aquaculture [8][9][10] and in insects for agricultural pest control 11,12 .…”

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confidence: 99%

A mutation in the receptor Methoprene-tolerant alters juvenile hormone response in insects and crustaceans

et al. 2013

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Juvenile hormone is an essential regulator of major developmental and life history events in arthropods. Most of the insects use juvenile hormone III as the innate juvenile hormone ligand. By contrast, crustaceans use methyl farnesoate. Despite this difference that is tied to their deep evolutionary divergence, the process of this ligand transition is unknown. Here we show that a single amino-acid substitution in the receptor Methoprene-tolerant has an important role during evolution of the arthropod juvenile hormone pathway. Microcrustacea Daphnia pulex and D. magna share a juvenile hormone signal transduction pathway with insects, involving Methoprene-tolerant and steroid receptor coactivator proteins that form a heterodimer in response to various juvenoids. Juvenile hormone-binding pockets of the orthologous genes differ by only two amino acids, yet a single substitution within Daphnia Met enhances the receptor's responsiveness to juvenile hormone III. These results indicate that this mutation within an ancestral insect lineage contributed to the evolution of a juvenile hormone III receptor system.

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“…The same, highly conserved cellular transduction pathways connect an enormous wealth of external inputs to internal outputs. And the same, highly conserved endocrine machinery enables the linking of diverse external signals to equally diverse behavioral, physiological, and developmental responses (Nijhout, 1994;Hartfelder and Emlen, 2005;Alberts et al, 2008).…”

Section: The Morphology Of Development and The Theory Of Facilitated mentioning

confidence: 99%

Re-evaluating the environment in developmental evolution

Moczek

2015

Front. Ecol. Evol.

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This manuscript reviews our growing understanding of the role of environmental conditions in shaping development and developmental evolution. It then discusses how this enhanced understanding increasingly questions our intuitive notions of the environment as separable from-and external to-organisms, as a selective force that is passive rather than generative, and as an external agent that organisms respond to, rather than one that organisms actively modify to suit their responses. Throughout I highlight examples of case studies in evo devo and beyond that-by integrating a revised evaluation of the environment into their research programs-have been able to advance long-standing and critical questions in the biological sciences. I end by summarizing several theoretical frameworks that are already well in place to guide a more systemic re-integration of the role of environmental conditions in evo devo.

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Endocrine Control of Insect Polyphenism

Cited by 80 publications

References 360 publications

Juvenile hormone as a physiological regulator mediating phenotypic plasticity in pancrustaceans

Juvenile hormone as a physiological regulator mediating phenotypic plasticity in pancrustaceans

A mutation in the receptor Methoprene-tolerant alters juvenile hormone response in insects and crustaceans

Re-evaluating the environment in developmental evolution

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