Actinopterygians: Head, Jaws and Muscles

Huby, Alessia; Parmentier, Éric

doi:10.1007/978-3-319-93560-7_5

Cited by 8 publications

(9 citation statements)

References 102 publications

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“…Extensive complexity and diversification of skull anatomy among fishes correlates with highly diverse feeding ecologies (Gidmark et al, 2019; Huby & Parmentier, 2019; Liem, 1993; Martinez et al, 2018). Evolution of several functional units (Huby & Parmentier, 2019) has given rise to a diversity of feeding methods (e.g., ram, suction, biting) for optimal foraging on specific prey types, varying widely within and among species (Huby & Parmentier, 2019; Liem, 1993). Independent evolution of oral jaws, hyoid “jaws” and pharyngeal jaws for prey capture and food processing likely contributed to trophic and morphological diversification (Gidmark et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Radiations of ecomorphology and associated prey have occurred widely in fishes, including Pomacentridae (Cooper & Westneat, 2009), Labridae (Westneat et al, 2005), and Cichlidae (Mabuchi et al, 2007). While most studies investigate morphological variation among species or higher taxa (Huby & Parmentier, 2019;Konings et al, 2021;Liem, 1993;Martinez et al, 2018;Pauers & McMillan, 2014;Ronco et al, 2021), extensive variation in cranial morphology also exists within species (Kimmel et al, 2015;Pauers & McMillan, 2014). Sympatric polymorphism, where two or more morphs within a species inhabit the same geographic area, has been found in many lacustrine fish species and seems to be promoted by vacant niches, habitat variance, differences in spawning preferences, and relaxation of interspecific competition Smith & Skúlason, 1996).…”

Section: Introductionmentioning

confidence: 99%

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Diversity in the internal functional feeding elements of sympatric morphs of Arctic charr (Salvelinus alpinus)

Jónsdóttir

Elm

Ingimarsson³

et al. 2023

Preprint

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The diversity of functional anatomy related to feeding is particularly impressive in fishes and correlates with various ecological specializations across species. Polymorphism within species can manifest in divergent feeding morphology and ecology, often along a benthic pelagic axis. Arctic charr (Salvelinus alpinus) is a freshwater salmonid known for morphological variation and sympatric polymorphism. In Lake Þingvallavatn, Iceland, four morphs of arctic charr coexist that differ in preferred prey, behaviour, habitat use, and external feeding morphology. We studied variation in upper and lower jaw bones (six bones total) related to feeding, in adults of the four morphs using geometric morphometrics and univariate statistics. We tested for allometric differences in bone size and shape among morphs, morph effects on bone size and shape, and if benthic and pelagic ecologies associate with bone size and shape. We also examined the degree of integration between bone pairs. We found differences in bone size between pelagic and benthic morphs for two bones (dentary and premaxilla). There was clear bone shape divergence along a benthic pelagic axis in four bones (dentary, articular-angular, premaxilla and maxilla), as well as allometric differences between morphs in the dentary. Most dramatic was the dentary, where morph explained more shape variation than bone size. Comparatively, benthic morphs possess a compact and taller dentary, with shorter dentary palate, consistent with visible (but less prominent) differences in external morphology. As these morphs emerged in the last 10,000 years, these results indicate rapid functional evolution of specific feeding structures in arctic charr. This sets the stage for studies of the genetics and development of rapid and parallel craniofacial evolution.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Diversity in the internal functional feeding elements of sympatric morphs of Arctic charr (Salvelinus alpinus)

Jónsdóttir

Elm

Ingimarsson³

et al. 2023

Preprint

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“…In fact, this tagging method caused visible damage to the gills (lamellae tissue loss and discoloration) and operculum (irritation) one week after tagging in the pilot study with dummy devices. Current studies with rainbow trout showed similar results (unpublished results), probably due to fish species differences in head shape and operculum ossification [24]. Therefore, it was necessary to test a new tagging method that took these distinctive features into account.…”

Section: Discussionmentioning

confidence: 74%

A Novel Miniaturized Biosensor for Monitoring Atlantic Salmon Swimming Activity and Respiratory Frequency

Kolarevic

Calduch-Giner

Espmark

et al. 2021

Animals

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The advanced development of sensor technologies has led to the emergence of fish biosensors that are currently used for research and commercial purposes. AEFishBIT is a miniaturized biosensor attached to fish operculum that measures physical activity and respiration frequencies. In this study, we determined the effect of the tagging method and evaluated the use of this biosensor to monitor post-smolt Atlantic salmon in a tank-based system. The use of piercing fish tag had a negative impact on the gills and operculum, unlike the identical protocols used in gilthead sea bream and European sea bass. In contrast, a surgical thread did not show any apparent tissue damage. Two data recording schedules were considered to monitor immediate early reaction to fish handling and light regime changes (records every 15 min over 2 days) or adaptation to new light conditions (records every 30 min over 4 days). Data showed stabilization of physical activity 8 h post-tagging, with different steady states for the activity/respiratory ratio after changes in light intensity that reflected a different time course adaptation to new light conditions. High correlations were observed between AEFishBIT and video recording data. These findings supported the use of AEFishBIT as a promising tool for smart sensing of Atlantic salmon.

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“…This undesirable effect was solved by using corrosion-resistant self-piercing fish tags with a flexible heat shrink polyethylene tube to fit the device, which avoided growth impairment or pathological signs of hemorrhage or tissue damage after 1-3 weeks of tagging (Rosell-Moll et al, 2021). Such approach also works well in flat fish (turbot, sole), but it is not feasible in rainbow trout or Atlantic salmon, probably due to differences in head shape and operculum ossification (Huby and Parmentier, 2019). Indeed, following this tagging protocol, significant tissue damage and necrosis were observed few days post-tagging in both trout and salmon at the level of the piercing location and also on the gill tissue located below.…”

Section: Tagging Methods: How and Wherementioning

confidence: 99%

Revising the Impact and Prospects of Activity and Ventilation Rate Bio-Loggers for Tracking Welfare and Fish-Environment Interactions in Salmonids and Mediterranean Farmed Fish

et al. 2022

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Behavioral parameters are reliable and useful operational welfare indicators that yield information on fish health and welfare status in aquaculture. However, aquatic environment is still constraining for some solutions based on underwater cameras or echo sounder transmitters. Thus, the use of bio-loggers internally or externally attached to sentinel fish emerges as a solution for fish welfare monitoring in tanks- and sea cages-rearing systems. This review is focused on the recently developed AEFishBIT, a small and light data storage tag designed to be externally attached to fish operculum for individual and simultaneous monitoring of swimming activity and ventilation rates under steady and unsteady swimming conditions for short-term periods. AEFishBIT is a tri-axial accelerometer with a frequency sampling of 50–100 Hz that is able to provide proxy measurements of physical and metabolic activities validated by video recording, exercise tests in swim tunnel respirometers, and differential operculum and body tail movements across fish species with differences in swimming capabilities. Tagging procedures based on tag piercing and surgery procedures are adapted to species anatomical head and operculum features, which allowed trained operators to quickly complete the tagging procedure with a fast post-tagging recovery of just 2.5–7 h in both salmonid (rainbow trout, Atlantic salmon) and non-salmonid (gilthead sea bream, European sea bass) farmed fish. Dual recorded data are processed by on-board algorithms, providing valuable information on adaptive behavior through the productive cycle with the changing environment and genetics. Such biosensing approach also provides valuable information on social behavior in terms of adaptive capacities or changes in daily or seasonal activity, linking respiratory rates with changes in metabolic rates and energy partitioning between growth and physical activity. At short-term, upcoming improvements in device design and accompanying software are envisaged, including energy-harvesting techniques aimed to prolong the battery life and the addition of a gyroscope for the estimation of the spatial distribution of fish movements. Altogether, the measured features of AEFishBIT will assist researchers, fish farmers and breeders to establish stricter welfare criteria, suitable feeding strategies, and to produce more robust and efficient fish in a changing environment, helping to improve fish management and aquaculture profitability.

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Actinopterygians: Head, Jaws and Muscles

Cited by 8 publications

References 102 publications

Diversity in the internal functional feeding elements of sympatric morphs of Arctic charr (Salvelinus alpinus)

Diversity in the internal functional feeding elements of sympatric morphs of Arctic charr (Salvelinus alpinus)

A Novel Miniaturized Biosensor for Monitoring Atlantic Salmon Swimming Activity and Respiratory Frequency

Revising the Impact and Prospects of Activity and Ventilation Rate Bio-Loggers for Tracking Welfare and Fish-Environment Interactions in Salmonids and Mediterranean Farmed Fish

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