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Holobionts: Ecological communities, hybrids, or biological individuals? A metaphysical perspective on multispecies systems

Triviño, Vanessa and Suárez, Javier (2020) Holobionts: Ecological communities, hybrids, or biological individuals? A metaphysical perspective on multispecies systems. [Preprint]

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Abstract

Holobionts are symbiotic assemblages composed by a macrobe host (animal or plant) plus its symbiotic microbiota. In recent years, the ontological status of holobionts has created a great amount of controversy among philosophers and biologists: are holobionts biological individuals or are they rather ecological communities of independent individuals that interact together? Chiu and Eberl have recently developed an eco-immunity account of the holobiont wherein holobionts are neither biological individuals nor ecological communities, but hybrids between a host and its microbiota. According to their account, the microbiota is not a proper part of the holobiont. Yet, it should be regarded as a set of scaffolds that support the individuality of the host. In this paper, we approach Chiu and Eberl’s account from a metaphysical perspective and argue that, contrary to what the authors claim, the eco-immunity account entails that the microorganisms that compose the host’s microbiota are proper parts of the holobiont. Second, we argue that by claiming that holobionts are hybrids, and therefore, not biological individuals, the authors seem to be assuming a controversial position about the ontology of hybrids, which are conventionally characterized as a type of biological individual. In doing so, our paper aligns with the contemporary tendency to incorporate metaphysical resources to shed light on current biological debates and builds on that to provide additional support to the consideration of holobionts as biological individuals from an eco-immunity perspective.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
Triviño, Vanessa
Suárez, Javierjavier.suarez@ub.edu0000-0001-5851-2277
Keywords: Hologenome biological individuality microbiome metaphysics of biology mereology immunology
Subjects: General Issues > Scientific Metaphysics
Specific Sciences > Biology
Specific Sciences > Biology > Developmental Biology
Specific Sciences > Biology > Evolutionary Theory
Specific Sciences > Biology > Function/Teleology
General Issues > Natural Kinds
General Issues > Reductionism/Holism
Depositing User: Dr Javier Suárez
Date Deposited: 25 Jun 2020 22:30
Last Modified: 25 Jun 2020 22:30
Item ID: 17375
Subjects: General Issues > Scientific Metaphysics
Specific Sciences > Biology
Specific Sciences > Biology > Developmental Biology
Specific Sciences > Biology > Evolutionary Theory
Specific Sciences > Biology > Function/Teleology
General Issues > Natural Kinds
General Issues > Reductionism/Holism
Date: June 2020
URI: https://philsci-archive-dev.library.pitt.edu/id/eprint/17375

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