Piranha Predation Could Not Have Driven the Evolution of Arapaima gigas Scales

Huskey, Steve; Westneat, Mark W.; Grubich, Justin R.

doi:10.1016/j.matt.2020.10.028

Cited by 8 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Protective structures have experienced a marked increase in interest from the material science community due to their unique mechanical characteristics and properties, but dearth of biological knowledge on the potential predators or predator–prey interactions calls into question the relevance thereof. A prime example of such a case is the extreme toughness of arapaima fish scales, which has been ascribed to piranha predation by the material science community (Lin et al, 2011; Meyers et al, 2012; Yang et al, 2019), but is refuted by numerous evolutionary and ecological lines of evidence (Huskey et al, 2020). Demonstration of a protective function against one or multiple predators provides evidence that the current anti‐predatory role of armour may be selecting for and is maintaining the trait, provided that these aspects are analysed within a historical, phylogenetic and ecological contexts.…”

Section: The Limitations Of the Anti‐predator Hypothesismentioning

confidence: 99%

Intraspecific competition: A missing link in dermal armour evolution?

Broeckhoven

2022

Journal of Animal Ecology

View full text Add to dashboard Cite

Predation is widely regarded as an important selective force in the evolution and maintenance of dermal armour; yet, the basic premise that predation and armour are strongly linked to each other has proven to be difficult to assess. In this concept, I put forward the fighting‐advantage hypothesis, the view that aggressive interactions with conspecifics, not predation, might have been a key selective pressure in the evolution of dermal armour. Considering intraspecific competition as a potential explanation could not only reveal previously overlooked aspects of the functional and evolutionary significance of dermal armour, but also advance the emerging field of biomimetics in which such knowledge forms the starting point of technological innovation.

show abstract

Section: The Limitations Of the Anti‐predator Hypothesismentioning

confidence: 99%

Intraspecific competition: A missing link in dermal armour evolution?

Broeckhoven

2022

Journal of Animal Ecology

View full text Add to dashboard Cite

show abstract

“…Logo, as escamas funcionam como um escudo, representando proteção contra os predadores sem comprometer a mobilidade, já que também são leves, flexíveis e resistentes. Isto abre precedente à sua imitação em itens, como coletes à prova de balas (YANG et al, 2019;HUSKEY, 2020).…”

Section: Estudos Iniciaisunclassified

“…2021. Dispõe sobre a Política Nacional de Desenvolvimento Sustentável da Aquicultura e da Pesca, regula as atividades pesqueiras, revoga a Lei no 7.679, de 23 de novembro de 1988, e dispositivos do Decreto-Lei no 221, de 28 de fevereiro de 1967, e dá outras providências.…”

unclassified

Cenário Da Piscicultura Brasileira Frente À Pandemia Da Covid-19

Alcântara¹,

Epifânio²,

Bentes³

et al. 2021

Pesca E Aquicultura: Desafios Na Amazônia Paraense

View full text Add to dashboard Cite

A piscicultura tem ganhado destaque no Brasil, como uma das atividades produtivas que mais cresce, contribuindo não somente para a oferta de alimento para o mercado interno, mas atendendo também ao mercado externo (PEIXE BR, 2021). A pandemia da COVID-19 causou impactos no agronegócio sob diversos aspectos. Diante disso, as empresas rurais precisaram se organizar para mitigar os efeitos negativos e elaborar estratégias para soerguer o negócio, considerando as questões econômicas em torno de todos os elos da cadeia produtiva (PWC, 2020). O objetivo desta pesquisa foi fazer um panorama a respeito da piscicultura brasileira antes da pandemia, apontar os impactos sobre a atividade quando do estabelecimento da crise e analisar as estratégias adotadas pelos piscicultores para reagir à situação. Para a piscicultura brasileira, mesmo com todas as dificuldades impostas pela pandemia, 2020 foi um ano positivo para aqueles que souberam aproveitar as oportunidades. Os piscicultores aumentaram os investimentos visando melhorar produtos e serviços, aprimoramento de técnicas de processamento e beneficiamento dos peixes, bem como a aquisição de equipamentos. Ocorreram dificuldades iniciais relacionadas à comercialização, em virtude das restrições de pessoas aos centros de venda (feiras e mercados), atingindo principalmente os pequenos produtores. Entretanto, por intermédio da Associação Brasileira de Piscicultura, junto aos piscicultores, gestores de empresas de insumos, cooperativas e associações, a situação foi controlada, gerando bons resultados para a economia, foram intensificadas as exportações, sobretudo de tilápia e peixes nativos. Importante salientar que o marketing rural ajudou muito neste processo de venda para o fortalecimento da cadeia produtiva do peixe.

show abstract

“…It is highly desirable for structural materials to have enhanced impact resistance and exemption from catastrophic damage. , Bioinspired artificial armor are inspiring a pathway to overcome brittleness. − For example, the scales of Pirarucu are among the most flexible biomaterials in nature. In the survival war between Pirarucu and Piranha , the former’s hard outer “shield”, with intriguing resistance to cracking, can often defend against the spear-like long teeth of the Piranha . This can be attributed to their highly rigid outer layer as well as a softer but tougher internal collagen fibril layer with a Bouligand-like structure to absorb excessive deformation. , …”

mentioning

confidence: 99%

“…In the survival war between Pirarucu and Piranha, the former's hard outer "shield", with intriguing resistance to cracking, can often defend against the spear-like long teeth of the Piranha. 17 This can be attributed to their highly rigid outer layer as well as a softer but tougher internal collagen fibril layer with a Bouligand-like structure to absorb excessive deformation. 18,19 Being the most abundant, renewable, and sustainable resource on Earth, lignocellulose has both primary (covalent bonds) and secondary bonds (hydrogen bonds) that can be reformed once they are broken.…”

mentioning

confidence: 99%

Bioinspired Construction of Micronano Lignocellulose into an Impact Resistance “Wooden Armor” With Bouligand Structure

Chen

Dang

et al. 2022

ACS Nano

View full text Add to dashboard Cite

The demand for advanced safeguards has increased with a rise in terrorism and international conflicts. Traditional impact-resistant glass and ceramics have relatively high performance but have several drawbacks as well, such as inflexibility, heaviness, and high processing energy consumption. Herein, we propose sustainable lignocellulosic duplicates: the Pirarucu scale-inspired structures that can serve as “wood armor” with impressive damage tolerance. By accurately assembling a rigid laminated lignocellulose, with a soft shear-thickened fluid interlayer, into a Bouligand-like structure, the artificial wooden armor exhibits a 10-fold increase in impact resistance. This observation is similar to that of typical engineering materials (e.g., ceramics, glass, and alloys). However, our proposed material structure has the capability of blocking the enormous impact of a bullet while notably having approximately half the density of typical engineering materials. The high durability and damage resistance of wooden armor effectively prevents catastrophic damage when it is impacted upon. The design strategy presents a method for lightweight, high-performance, and sustainable bioinspired materials for special security applications.

show abstract

Piranha Predation Could Not Have Driven the Evolution of Arapaima gigas Scales

Cited by 8 publications

References 11 publications

Intraspecific competition: A missing link in dermal armour evolution?

Intraspecific competition: A missing link in dermal armour evolution?

Cenário Da Piscicultura Brasileira Frente À Pandemia Da Covid-19

Bioinspired Construction of Micronano Lignocellulose into an Impact Resistance “Wooden Armor” With Bouligand Structure

Contact Info

Product

Resources

About