Characterization of age-dependent variability in the flank scales of two scorpaeniformes fishes by applying light and scanning electron microscopy imaging

Motamedi, Mina; Teimori, Azad; Amiri, Vahid; Hesni, Majid Askari

doi:10.1016/j.micron.2019.102778

Cited by 19 publications

(23 citation statements)

References 24 publications

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“…Scale characteristics are used in various fields. For example, it is used for the determination of fish ages and the assessment of population stocks in fisheries science (e.g., Bašić & Britton, 2015; Granados‐Flores, Gallardo‐Cabello, Espino‐Barr, & Cabral‐Solís, 2010), studying fish taxonomy and the discrimination among the fish species and even populations (e.g., Ganzon, Torres, Gorospe, & Demayo, 2012; Gholami, Teimori, Esmaeili, Schulz‐Mirbach, & Reichenbacher, 2013; Ibañez, Cowx, & O'Higgins, 2007; Jawad, 2005; Mekkawy, Mahmoud, & Sayed, 2011; Motamedi, Teimori, Amiri, & Askari Hesni, 2020; Teimori, 2018), and functional approach (e.g., Mekkawy & Lashein, 2003; Mekkawy, Shehata, Saber, & Osman, 1999). Functionally, the mechanical protection against predators (Benjamin, Juha, Mary, & Christine, 2008) and acting up as a hydrodynamic tool for locomotor performance (Sudo, Tsuyuki, Ito, & Ikohagi, 2002; Wainwright & Lauder, 2016) are the main functions of scales in fishes.…”

Section: Introductionmentioning

confidence: 99%

Digital light microscopy to characterize the scales of two goatfishes (Perciformes; Mullidae)

Sabbah

Teimori

Hesni

2020

Microscopy Res & Technique

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The normal and lateral line scales from above the head and four flank regions were investigated in two goatfishes by using light microscopy to evaluate the microscopic characteristics of scale surface ornamentation from different body parts of these fishes and to add new morphological data for their discrimination. The body scales were removed and digital images captured with a Dino‐Lite digital camera connected to a Leica compound microscope. The presence of both transverse and longitudinal radii was a distinctive characteristic for the scales of studied goatfishes. The most distinctive features of the key scales discriminating the two goatfishes were the scale shape, the presence of irregular grooves in scale surface, the presence of transverse radii in the lateral fields, and the availability of lepidont at the anterior field. The lateral line scale ornamentations were almost similar in two species; however, the lateral line canal was branching in Parupeneus heptacanthus. Scale extension index indicated that in both species, the dimension of normal key scales tends to the right, while the dimension of lateral line scales tends to the left. This study accentuated that scales from different body regions may exhibit variation in surface ornamentations, that scale morphology could successfully be used to discriminate the examined goatfishes, and that the use of fish scale microscopy is an easy and relatively rapid method and does not require fish sacrifice. Since fish identification is essential for the conservation and management of species, the use of scale morphology to this purpose appears particularly promising.

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Section: Introductionmentioning

confidence: 99%

Digital light microscopy to characterize the scales of two goatfishes (Perciformes; Mullidae)

Sabbah

Teimori

Hesni

2020

Microscopy Res & Technique

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“…Nonetheless, only a few studies have considered the size‐dependent variations and the pattern of morphological dimorphism in the otoliths of these fishes (Motamedi, Teimori, Amiri, & Askari Hesni, 2020). Therefore, more studies are needed to determine the pattern of ontogenetic alterations in the otolith of Aphanius species.…”

Section: Introductionmentioning

confidence: 99%

“…They are characterized by the high degree of adaptability to diverse habitats, high morphological variability as well as high population divergence rates and even a worthy regeneration ability (e.g. Cavraro et al, 2017; Iranmanesh & Motamedi, 2018; Motamedi et al, 2019, 2020; Teimori, Esmaeili, et al, 2012; Teimori, Jawad, et al, 2012; Zeinali & Motamedi, 2017). They have a remarkable capacity to adapt to adverse environmental conditions and evolve into new species when populations become isolated (Teimori et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…This ability has made them particularly attractive for biologists as an appropriate model for studying phenotypic variation and plasticity, species diversity, zoogeography and evolutionary development processes (e.g. Ferrito et al, 2013; Gholami et al, 2015; Hrbek & Meyer, 2003; Motamedi et al, 2019, 2020; Reichenbacher, Sienknecht, Kuchenhoff, & Fenske, 2007; Teimori, Esmaeili, et al, 2012; Teimori, Jawad, et al, 2012; Tigano, Ferrito, & Nicosia, 1999; Villwock, 1983).…”

Section: Introductionmentioning

confidence: 99%

“…Concerning the studies on tooth‐carp Aphanius , the recent works have sufficiently used otolith morphology to infer within‐population variation (Annabi et al, 2013; Teimori, Jawad, et al, 2012), inter‐population differentiation (Gholami, Esmaeili, Erpenbeck, & Reichenbacher, 2014; Reichenbacher et al, 2007; Teimori, Esmaeili, et al, 2012), inter‐specific differentiation (Reichenbacher et al, 2007; Teimori, Schulz‐Mirbach, Esmaeili, & Reichenbacher, 2012), and to discover and identify several new species particularly in poorly known regions such as Iran. Moreover, based on the previously published experiences (Esmaeili, Teimori, Gholami, & Reichenbacher, 2014; Gholami et al, 2014, 2015; Motamedi et al, 2019, 2020; Reichenbacher et al, 2007; Reichenbacher & Sienknecht, 2001; Teimori et al, 2014, 2018; Teimori, Esmaeili, et al, 2012; Teimori, Jawad, et al, 2012; Teimori, Schulz‐Mirbach, et al, 2012), it could be specified that otolith data have desirably contributed to a better understanding of species description and diversification, and also distribution pattern and historical zoogeography of Aphanius species.…”

Section: Introductionmentioning

confidence: 99%

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Intrapopulation variation of otolith associated with ontogeny and morphological dimorphism in Hormuz tooth‐carp Aphanius hormuzensis (Teleostei: Aphaniidae)

2020

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The intrapopulation variation in otolith morphology was investigated for the first time in a recently discovered tooth‐carp Aphanius hormuzensis by considering ontogenetic variation and morphological dimorphism. The otolith materials were examined by scanning electron microscopy and quantitative analyses. The results underlined clear ontogenetic variation in the otolith morphology, which could be valuable to delineate the certain developmental stages of A. hormuzensis. Besides, some otolith features were found to be consistent during fish development and, therefore, appreciated to identify the species. The otoliths of A. hormuzensis demonstrated considerable sexual dimorphism in the adult fishes. Also, morphological side dimorphism was observed more in the otoliths of the females. As a result, the present study designated a clear intrapopulation variation in the otolith of A. hormuzensis, which were mainly influenced by fish development, sexual factors and morphological side dimorphism. The outcomes of the present study provide new basic data on the natural intrapopulation variation of this tooth‐carp during its life history and offered new data to interpret those factors that regulate otolith shape during the development, which has less been considered in previous studies.

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Scanning electron microscopy and morphological analysis reveal size‐dependent changes in the scale surface ornamentation of tooth‐carp Aphaniops hormuzensis (Teleostei; Aphaniidae)

Teimori

Esmaeili

Motamedi

2021

Microscopy Res & Technique

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Aphanius hormuzensis is an endemic tooth-carp found in the Hormuzgan drainage in S-Iran. This study aimed to investigate the size-dependent alternations of scale surface ornamentation in this species by conducting scanning electron microscopy and morphological analysis. A total of 50 wild fish individuals were captured from Shur River, and were classified into five size classes based on the standard length; SC-I (SL = 10-20 mm), SC-II (SL = 21-30 mm), SC-III (SL = 41-50 mm), SC-IV (SL = 51-60 mm), and SC-V (SL = 61-70 mm), and their scales were removed from below the dorsal fin (key scale) and caudal peduncle regions. The results revealed a clear trend of scale structural development in A. hormuzensis. The scale of small-sized (TL < 30 mm) and large-sized fishes (TL > 30 mm) differed, respectively, in the following characters; the overall shape (often circular vs. polygonal), relative focus size (large, FL/SL = 440-610 μm vs. intermediate and small, FL/SL = 100-330 μm), types of radii (only primary vs. three types), relative radii length (short, RL/SL = 100-180 μm vs. long, RL/SL = 320-450 μm), lepidont (absent or undeveloped vs. present and developed), and the relative lepidont length (short, LL/SL = 0.83-0.90 μm vs. intermediate and long, LL/SL = 1.2-2.2 μm). These character alternations could explain certain developmental stages in this species. The size-dependent changes in the surface micro-ornamentations as shown in this study suggest that these characters should be used cautiously for taxonomic studies of the aphaniid fishes.

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Characterization of age-dependent variability in the flank scales of two scorpaeniformes fishes by applying light and scanning electron microscopy imaging

Cited by 19 publications

References 24 publications

Digital light microscopy to characterize the scales of two goatfishes (Perciformes; Mullidae)

Digital light microscopy to characterize the scales of two goatfishes (Perciformes; Mullidae)

Intrapopulation variation of otolith associated with ontogeny and morphological dimorphism in Hormuz tooth‐carp Aphanius hormuzensis (Teleostei: Aphaniidae)

Scanning electron microscopy and morphological analysis reveal size‐dependent changes in the scale surface ornamentation of tooth‐carp Aphaniops hormuzensis (Teleostei; Aphaniidae)

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