Teleost fish scales amongst the toughest collagenous materials

Dastjerdi, Ahmad Khayer; Barthelat, François

doi:10.1016/j.jmbbm.2014.09.025

Cited by 72 publications

(44 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even injuries of low severity that can usually heal in fish within a timespan of days to weeks, such as scale loss (Bereiter-Hahn & Zylberberg, 1993;Vieira et al, 2011), tears in the fins (Azevedo, Grotek, Jacinto & Weidinger, 2011), dermal lesions (Anderson & Roberts, 1975;Roubal & Bullock, 1988) and pigment anomalies, may cause delayed mortality. This can result from severe loss of protection from infections and mechanical threats (Dastjerdi & Barthelat, 2015;Vernerey & Barthelat, 2010) or reduced swimming performance and therefore enhance predation risk (Dastjerdi & Barthelat, 2015;Noble et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of external fish injury caused by hydropower plants based on a novel field‐based protocol

Mueller

Pander

Geist

2017

Fisheries Management Eco

View full text Add to dashboard Cite

Knowledge on the extent and mechanisms of fish damage caused by hydropower facilities is important for their ecological improvement. Herein, a novel field-based fish injury assessment protocol is proposed that includes vitality and four general health criteria, as well as nine lethal and sub-lethal injury types across 18 body parts. The protocol was validated using 3,087 specimens from four species of hatchery-reared fish, as well as 2,262 specimens from 32 species of wild fish. The protocol allowed a detailed and systematic evaluation of different fish injury types in the field. Injuries related to handling and to contact with different parts of the hydropower structure could be distinguished applying multivariate statistics. This approach allows quantification and comparison of fish injuries across sites, and can help to identify the technologies and operational procedures that minimise damage to fish. It may also be useful to assess fish health in other contexts including aquaculture. K E Y W O R D Sanimal welfare, fish conservation, fish mortality, fish passage, hydropower monitoring | INTRODUCTIONHydropower technology is considered a clean and renewable energy source of increasing worldwide importance (Zarfl, Lumsdon, Berlekamp, Tydecks & Tockner, 2015). Hydropower is generated by converting the kinetic and potential energy from falling water into rotating shaft power, which can be used to drive an electricity generator (Paish, 2002). Unfortunately, downstream moving fish often enter the hydropower structure where they are exposed to extreme risks of harm (Williams, Armstrong, Katopodis, Larinier & Travade, 2012).Various physical mechanisms can result in various forms of fish damage, including collisions with the machinery (Killgore, Maynord, Chan & Morgan, 2001), bar screens or cleaning devices (Adam & Brujis, 2006;Nettles & Gloss, 1987;Skalski, Mathur & Heisey, 2002), shear stress near the turbine blades, in the draft tube and in the tailrace (Čada, Garrison & Fisher, 2007), barotrauma caused by pressure changes , cavitation forces within the runner case, turbulences and fluid shear within the suction hose as well as in the tailrace (Abernethy, Amidan & Čada, 2001). Resulting injuries include scale loss, fin damage, haemorrhages, bruises, skin wounds, amputations of body parts or internal injuries, such as swim bladder rupture and emboli (Dedual, 2007;Ebel, 2013;Schneider, Hübner & Korte, 2012). As movement and migration are obligatory elements in the life cycle of many fishes (Lucas, Baras, Thom, Duncan & Slavík, 2001), the injuries and mortalities resulting from passage through turbines are still a major drawback of hydroelectric energy (Hogan, Čada & Amaral, 2014).The severity of the impact of power plant passage is dependent on technical characteristics such as the rotation speed of the turbine, turbine diameter, number of turbine blades, blade angle and the drop height, which determine the degree of pressure changes, shear stress, cavitation and the collision risk for fish (Ferguson, Ploskey,...

show abstract

Section: Discussionmentioning

confidence: 99%

Evaluation of external fish injury caused by hydropower plants based on a novel field‐based protocol

Mueller

Pander

Geist

2017

Fisheries Management Eco

View full text Add to dashboard Cite

show abstract

“…This has been experimentally shown on the scales of the striped sea bass [191] where the hardness decreases through the thickness of the scale toward the proximal surface [181,198]. Of note, this collagen base has been shown to be amongst the toughest biological materials known [199]. In addition to the mechanical properties of the fish scale layers, there are specific design qualities that dictate the ability of scales to provide protection while still maintaining mobility and minimizing weight.…”

Section: Overlapping Fish Scalesmentioning

confidence: 97%

Structure and mechanical properties of selected protective systems in marine organisms

Naleway

Taylor

Porter

et al. 2016

Materials Science and Engineering: C

View full text Add to dashboard Cite

“…With the further evolution, the elasmoid scales appeared, which are the prevailing type of fish scales today . Much more compliant, they possess a dramatically reduced mineral layer and laminate inner core composed of non‐mineralized or slightly mineralized collagen fibrils . All the well‐studied elasmoid scales exhibit an arrangement of the collagen fibrils that follows an orthogonal or twisted plywood structure (also called the “Bouligand‐type” structure), which can accommodate the imparted deformation through fibrous lamellae rotation, fibril straining, and interfibrillar sliding .…”

Section: Introductionmentioning

confidence: 95%

Novel Defense Mechanisms in the Armor of the Scales of the “Living Fossil” Coelacanth Fish

Quan

Yang

Schaible

et al. 2018

Adv Funct Materials

View full text Add to dashboard Cite

Here, experiments and analysis revealing the unique defense mechanisms of the coelacanth, a lobe-finned fish termed a "living fossil", are reported, as it was considered to be extinct until 1938, but extant for 400 million years. This defense is provided by primitive elasmoid scales having a rare double-twisted Bouligand structure of lamellae which provides extraordinary resistance to deformation without failure. Distinct from other elasmoid scales, the collagen fibrils in the coelacanth fish scales form bundles which are embedded in a matrix comprising fibers arranged perpendicular to the layered (doubletwisted Bouligand) structure that provide added rigidity and resistance to deformation. Using in situ synchrotron small-angle X-ray scattering during uniaxial tensile testing, the deformation mechanisms of the collagen are identified in terms of fibril stretching, reorientation, sliding, bending, and delamination. The unique structure of the coelacanth scales, distinct from modern elasmoid scales such as the carp, provides a variety of mechanisms to arrest cracking, making it an outstanding damage-tolerant material to resist predator attacks.

show abstract

Teleost fish scales amongst the toughest collagenous materials

Cited by 72 publications

References 46 publications

Evaluation of external fish injury caused by hydropower plants based on a novel field‐based protocol

Evaluation of external fish injury caused by hydropower plants based on a novel field‐based protocol

Structure and mechanical properties of selected protective systems in marine organisms

Novel Defense Mechanisms in the Armor of the Scales of the “Living Fossil” Coelacanth Fish

Contact Info

Product

Resources

About