Morphology and development of the Portuguese man of war, Physalia physalis

Munro, Catriona; Vue, Zer; Behringer, Richard R.; Dunn, Casey W.

doi:10.1038/s41598-019-51842-1

Cited by 41 publications

(38 citation statements)

References 45 publications

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“…S12C) [17,[30][31][32]. In P. physalis, both the gastrozooid and the tentacular palpon are considered to be subfunctionalized from an ancestral gastrozooid type [31]. Finally, in Agalma elegans, there are thought to be at least two different palpon types: gastric palpons that arise at the base of the peduncle of the gastrozooid, and a palpon called the B-palpon (Fig.…”

Section: Novel Zooids Within Species: Can Expression Patterns Distinguish Distinct Zooid Types?mentioning

confidence: 99%

Evolution of gene expression across species and specialized zooids in Siphonophora

Munro

Zapata

Howison

et al. 2021

Preprint

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Background: Siphonophores are complex colonial animals, consisting of asexually-produced bodies (called zooids) that are functionally specialized for specific tasks, including feeding, swimming, and sexual reproduction. Though this extreme functional specialization has captivated biologists for generations, its genomic underpinnings remain unknown. We use RNA-seq to investigate gene expression patterns in five zooids and one specialized tissue (pneumatophore) across seven siphonophore species. Analyses of gene expression across species present several challenges, including identification of comparable expression changes on gene trees with complex histories of speciation, duplication, and loss. Here, we conduct three analyses of expression. First, we examine gene expression within species. Then, we conduct classical analyses examining expression patterns between species. Lastly, we introduce Speciation Branch Filtering, which allows us to examine the evolution of expression in a phylogenetic framework. Results: Within and across species, we identified hundreds of zooid-specific and species-specific genes, as well as a number of putative transcription factors showing differential expression in particular zooids and developmental stages. We found that gene expression patterns tended to be largely consistent in zooids with the same function across species, but also some large lineage-specific shifts in gene expression. Conclusions: Our findings show that patterns of gene expression have the potential to define zooids in colonial organisms. We also show that traditional analyses of the evolution of gene expression focus on the tips of gene phylogenies, identifying large-scale expression patterns that are zooid or species variable. The new explicit phylogenetic approach we propose here focuses on branches (not tips) offering a deeper evolutionary perspective into specific changes in gene expression within zooids along all branches of the gene (and species) trees.

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Section: Novel Zooids Within Species: Can Expression Patterns Distinguish Distinct Zooid Types?mentioning

confidence: 99%

Evolution of gene expression across species and specialized zooids in Siphonophora

Munro

Zapata

Howison

et al. 2021

Preprint

Self Cite

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“…Figure 10 presents an example of the potentialities of 4D printing. However, unlike what the Portuguese man-of-war (Physalia physalis) is able to do in nature (Munro et al, 2019), one of the difficulties consists in assembling the individual voxels to form an efficient and robust tool/ machine.…”

Section: Programmable Mattermentioning

confidence: 99%

Is order creation through disorder in additive manufacturing possible?

Demoly

André

2021

Cogent Engineering

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Additive manufacturing is based on a deterministic principle of spatially localized material transformation. By using spatial energy resolution modes, it is thus possible to produce an object that meets a set of specifications in a step-bystep manner. This paper attempts to take the opposite view by examining whether it is interesting to use knowledge on "morphogenesis" (cf. Alan Turing) and other conceptual ideas of spontaneous self-organization to achieve a desired shape. This new and more systemic form of 3D/4D printing enables the self-assembly and establishment of elements (voxels) in various environments through the use of programmable or smart matter. The necessary convergence of interacting elements requires a related decisive activity, however, to the sign of unknown, indecision, complexity, unpredictable bifurcations, in short of scientific promise that cannot be robustly kept. Beyond this frame of generalized non-decidability-a form of abandonment of self-organization paradigm in favour of deterministic doctrines-, there are paths to partial success where desired spatial transformations can be created through (mastered?) disorder. The paper presents the conceptual bases of 3D selforganization with some illustrative examples. The objective is to highlight the interests of this disruptive vision with its realistic limits.

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“…Scientific name: Physalia physalis utriculus Appearance: A lovely blue hue. Also called "blue bottles," they have a bluish-white floating hood from which tentacles extend to reach a length of 10-20 m [27]. The Portuguese man-of-war is also called the "electric jellyfish" because its tentacles contain many nematocysts that induce a strong sensation akin to an electric shock (Fig.…”

Section: Portuguese Man-of-warmentioning

confidence: 99%

Marine Envenomation

Hifumi

Fukuchi

Otani

2020

SN Compr. Clin. Med.

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With global warming and an increasing frequency of human interaction with venomous marine organisms, physicians are likely to encounter more cases of marine envenomation in clinical practice in Japan and around the world. Few review articles regarding the clinical characteristics of marine envenomation have been published and there has been no comprehensive review of available antivenoms, which are the definitive treatment. We discuss the epidemiology, venom activity, clinical symptoms, diagnosis, and treatment of marine envenomation by the Okinawan box jellyfish, stonefish, Portuguese man-of-war, geography cone, and blueringed octopus. A comprehensive review of available antivenom treatments is also presented.

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Morphology and development of the Portuguese man of war, Physalia physalis

Cited by 41 publications

References 45 publications

Evolution of gene expression across species and specialized zooids in Siphonophora

Evolution of gene expression across species and specialized zooids in Siphonophora

Is order creation through disorder in additive manufacturing possible?

Marine Envenomation

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