Charles Darwin and Joseph de Bosquet – Brothers in barnacles: How diminutive crustaceans helped shape a theory

Jagt, John W.M.

doi:10.1016/j.cretres.2011.03.008

Cited by 3 publications

(4 citation statements)

References 12 publications

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“…7 Like mussels and sandcastle worms, barnacles adhere to surfaces with protein-rich cement they secrete and cure underwater. 8−13 Despite considerable taxonomic and histological observations dating to Darwin and his contemporaries, 14,15 the complex physiological processes involved in creating and curing the barnacle bioadhesive interface remain unresolved. It is widely accepted that glands near the barnacle base plate periodically produce uncured cement that is distributed to the binding interface through a network of capillaries.…”

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Barnacle Balanus amphitrite Adheres by a Stepwise Cementing Process

Burden

Barlow²,

Spillmann³

et al. 2012

Langmuir

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Barnacles adhere permanently to surfaces by secreting and curing a thin interfacial adhesive underwater. Here, we show that the acorn barnacle Balanus amphitrite adheres by a two-step fluid secretion process, both contributing to adhesion. We found that, as barnacles grow, the first barnacle cement secretion (BCS1) is released at the periphery of the expanding base plate. Subsequently, a second, autofluorescent fluid (BCS2) is released. We show that secretion of BCS2 into the interface results, on average, in a 2-fold increase in adhesive strength over adhesion by BCS1 alone. The two secretions are distinguishable both spatially and temporally, and differ in morphology, protein conformation, and chemical functionality. The short time window for BCS2 secretion relative to the overall area increase demonstrates that it has a disproportionate, surprisingly powerful, impact on adhesion. The dramatic change in adhesion occurs without measurable changes in interface thickness and total protein content. A fracture mechanics analysis suggests the interfacial material's modulus or work of adhesion, or both, were substantially increased after BCS2 secretion. Addition of BCS2 into the interface generates highly networked amyloid-like fibrils and enhanced phenolic content. Both intertwined fibers and phenolic chemistries may contribute to mechanical stability of the interface through physically or chemically anchoring interface proteins to the substrate and intermolecular interactions. Our experiments point to the need to reexamine the role of phenolic components in barnacle adhesion, long discounted despite their prevalence in structural membranes of arthropods and crustaceans, as they may contribute to chemical processes that strengthen adhesion through intermolecular cross-linking.

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confidence: 99%

Barnacle Balanus amphitrite Adheres by a Stepwise Cementing Process

Burden

Barlow²,

Spillmann³

et al. 2012

Langmuir

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“…Campanian; Carlsson, 1953), and also from the shallow-marine uppermost Maastrichtian of northeast Belgium and the southeast Netherlands (Bosquet, 1857;Withers, 1935;Jagt, 2011). The closely related B. americana is locally abundant in the Campanian of Arkansas .…”

Section: Remarks Brachylepas Guascoi Is Known From Many Localities Imentioning

confidence: 96%

“…Bosquetlepas valida is closest to B. gracilis (Roemer, 1841) from the upper Maastrichtian of the environs of Maastricht, the Netherlands, southern Belgium and Ukraine (Alekseev, 1979;Jagt, 2011); it differs principally from that form in the consistent difference in shape of the scutum. In B. valida, the angle between the basal and lateral margins is relatively acute (100 ), whereas in B. gracilis it is more obtuse (120 ).…”

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confidence: 96%

Taxonomy and palaeoecology of thoracican cirripedes (Crustacea) from a Campanian rocky shoreline at Ivö Klack, southern Sweden

Gale

Sørensen

2015

Cretaceous Research

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“…Projeto Cirripédia, como Charles Lyell, Louis Agassiz e até mesmo embaixadores e banqueiros. A relação de Darwin com estes grandes nomes foi amplamente abordada (GUNTHER, 1979;BARTON, 1998BARTON, , 2003KOHN, 2005;REGNER, 2007;PORTO, 2010;JAGT, 2011, SOUZA, 2017, contudo, há outra parcela de colaboradores que não recebeu a devida atenção dos historiadores. São homens e mulheres, remunerados ou não, muitos anônimos e de classes baixas que auxiliaram no transporte dos espécimes, manuscritos e ilustrações, na apresentação de fatos e espécimes novos, no fornecimento de instrumentos ópticos e na tradução de textos, por exemplo.…”

Section: Outros Renomados Homens De Ciência Foram Mobilizados Por Dar...unclassified

Os desclassificados de Darwin

Alves Valverde

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Gostaria de agradecer aos que contribuíram com a elaboração desta tese, mesmo que as palavras sejam quase nada diante do apoio recebido, gostaria que se sentissem tocados como se recebessem pequenas cartas, destinadas aos meus possíveis interlocutores: entes queridos, amigos, docentes e todos das instituições envolvidas que, de alguma forma, tornaram este trabalho viável. O presente trabalho foi realizado com apoio da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior -Brasil (CAPES) -Código de Financiamento 001. A CAPES financiou o doutorado em Política Científica e Tecnológica, ofertado pela Universidade Estadual de Campinas em parceria com o Instituto Federal de Minas Gerais. Agradeço às três instituições. Agradeço à professora doutora Cristina de Campos, por quem fui orientado, pela acolhida, atenção, carinho e compreensão, características fundamentais para que eu não me perdesse nesse longo caminho. Ao professor doutor Marko Monteiro, com quem pude conviver nas disciplinas ministradas, agradeço por suas críticas precisas decorrentes de leituras atenciosas de meus textos. Ao professor doutor Rogério Monteiro, de quem pude receber também as críticas e sugestões no meu exame de qualificação, e que se demonstraram profundamente adequadas, agradeço por suas sugestões que abriram diversas possibilidades para minha pesquisa e engrandeceram este trabalho. Agradeço também à banca de defesa, composta pelos citados e também pelas professoras doutoras: Márcia Helena Alvim e Rebeca Buzzo Feltrim. Agradeço e parabenizo também aos funcionários da Universidade Estadual de Campinas, pelos serviços prestados, em especial àqueles que atuam no Instituto de Geociências e na Biblioteca Conrado Paschoale. Assim como à equipe da Cambridge University Library, sobretudo no âmbito do Darwin Correspondence Project¸ pelo excelente trabalho realizado e que possibilitam diversas pesquisas.

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Charles Darwin and Joseph de Bosquet – Brothers in barnacles: How diminutive crustaceans helped shape a theory

Cited by 3 publications

References 12 publications

Barnacle Balanus amphitrite Adheres by a Stepwise Cementing Process

Barnacle Balanus amphitrite Adheres by a Stepwise Cementing Process

Taxonomy and palaeoecology of thoracican cirripedes (Crustacea) from a Campanian rocky shoreline at Ivö Klack, southern Sweden

Os desclassificados de Darwin

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