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Humanities 2012, 1(3), 145-165; doi:10.3390/h1030145

Article

Illuminating Our World: An Essay on the Unraveling of the Species Problem, with Assistance from a Barnacle and a Goose

John Buckeridge*  and Rob Watts

Earth & Oceanic Systems Group, RMIT University, Melbourne, GPO Box 2476, Australia

* Author to whom correspondence should be addressed.

Received: 18 July 2012; in revised form: 27 September 2012 / Accepted: 8 October 2012 / Published: 15 October 2012

(This article belongs to the Special Issue Humanity’s Future)

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Abstract: In order to plan for the future, we must understand the past. This paper investigates the manner in which both naturalists and the wider community view one of the most intriguing of all questions: what makes a species special? Consideration is given to the essentialist view—a rigid perspective and ancient, Aristotelian perspective—that all organisms are fixed in form and nature. In the middle of the 19th century, Charles Darwin changed this by showing that species are indeed mutable, even humans. Advances in genetics have reinforced the unbroken continuum between taxa, a feature long understood by palaeontologists; but irrespective of this, we have persisted in utilizing the ‘species concept’—a mechanism employed primarily to understand and to manipulate the world around us. The vehicles used to illustrate this journey in perception are the barnacle goose (a bird), and the goose barnacle (a crustacean). The journey of these two has been entwined since antiquity—in folklore, religion, diet and even science.

Keywords: species concept; organic evolution; history of biology; goose barnacles; barnacle geese; Aristotle; Charles Darwin; Linnaeus

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