Structural and Morphometric Study of Scales in Petzea Rudd (Scardinius Racovitzai Müller 1958)

Șerban, Cecilia; Grigoraş, Gabriela

doi:10.15666/aeer/1605_60636076

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…The most used landmark configuration takes into account seven landmarks: the four points at the limits among the anterior, dorsal, posterior, and ventral margins of the scale, the two points in the middle of the anterior and posterior margins, and the focus [8,9,12,13,21,22,[24][25][26][27][28][36][37][38]. Few studies considered six landmarks, i.e., the same indicated above with the exception of the focus [10,23].…”

Section: Discussionmentioning

confidence: 99%

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New Insights into Geometric Morphometry Applied to Fish Scales for Species Identification

Traverso,

Aicardi,

Bozzo

et al. 2024

Animals

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The possibility of quick and cheap recognition of a fish species from a single dermal scale would be interesting in a wide range of contexts. The methods of geometric morphometry appear to be quite promising, although wide studies comparing different approaches are lacking. We aimed to apply two methods of geometric morphometry, landmark-based and outline-based, on a dataset of scales from five different teleost species: Danio rerio, Dicentrarchus labrax, Mullus surmuletus, Sardina pilchardus, and Sparus aurata. For the landmark-based method the R library “geomorph” was used. Some issues about landmark selection and positioning were addressed and, for the first time on fish scales, an approach with both landmarks and semilandmarks was set up. For the outline-based method the R library “Momocs” was used. Despite the relatively low number of scales analyzed (from 11 to 81 for each species), both methods achieved quite good clustering of all the species. In particular, the landmark-based method used here gave generally higher R2 values in testing species clustering than the outline-based method, but it failed to distinguish between a few couples of species; on the other hand, the outline-based method seemed to catch the differences among all the couples except one. Larger datasets have the potential to achieve better results with outline-based geometric morphometry. This latter method, being free from the problem of recognizing and positioning landmarks, is also the most suitable for being automatized in future applications.

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Section: Discussionmentioning

confidence: 99%

“…Therefore, the method with five landmarks and 80 semiland-marks was preferred. The position of landmarks was chosen also considering the specific literature [8][9][10]13,[21][22][23][24][25][26][27][28][29].…”

Section: Geometric Morphometry Based On Landmarks and Semilandmarks (...mentioning

confidence: 99%

New Insights into Geometric Morphometry Applied to Fish Scales for Species Identification

Traverso,

Aicardi,

Bozzo

et al. 2024

Animals

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“…Reported in the lateral line scale of Neolissochilus hexagonolepis and Neolissochilus hexastichus (Nongrum and Bhuyan 2020). Morphological variations of scales on the body of a fish are often found not only in Spotted barb (B. cf binotatus), but also in other cyprinid species such as Cyprinus carpio, Barbonymus gonionotus, Barbonymus schwanenfeldii, Labeo rohita, Cyclocheilichthys apogon (Farinordin et al 2017), and Scardinius racovitzai (Șerban and Grigoras 2018). The differences in scales' morphological characteristics in each part of the fish body are very important for taxonomic identification in each species (Kontas et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Short Communication: Morphological study of the scales of Barbodes cf. binotatus (Cyprinidae) from Toba Lake, Indonesia by using Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS)

et al. 2021

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Abstract. Lubis K, Sudibyo M, Siregar EH, Laili N. 2021. Short Communication: Morphological study of the scales of Barbodes cf. binotatus (Cyprinidae) from Toba Lake, Indonesia by using Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS). Biodiversitas 22: 3821-3828. Spotted barb (Barbodes cf binotatus) is a freshwater fish of Sumatra Island, especially found in the Toba. The study of morphological characteristics of the scales of Spotted barb (B. cf binotatus) is necessary in fish taxonomy. Therefore, the present study investigated the morphology and the chemical elements of the scales located between the dorsal fin and lateral line and those on the lateral line using SEM-EDS (Scanning Electron Microscope (SEM)- Energy Dispersive X-ray Spectroscopy (EDS). We found that the scales of Spotted barb (B. cf binotatus) have the general morphological characteristics of cycloid scales. The morphologies of the scales between the dorsal fin and lateral line and those on the lateral line are slightly different. Lateral line scales of Spotted barb (B. cf binotatus) have no focus area, replaced by a lateral line canal located along the anterior-posterior axis of the scales with two openings. The anterior opening is bigger and wider in compared to the posterior opening. The circuli of the dorsal fin scale is orientated towards the focus. However, the circuli of the lateral scale faces the lateral line canal. The scales contain some elements such as Ca, K, O, Mg, Na, and P.

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A Distinction of Some Cyprinid Species from Tigris River Basin According to Scales by Geometric Morphometric Methods

Bilici

2020

Harran Üniversitesi Veteriner Fakültesi Dergisi

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In this study, a total of 86 (31♀♀, 55♂♂) cyprinid specimens belonging to the species, Luciobarbus mystaceus, Arabibarbus grypus, Luciobarbus esocinus and Carasobarbus luteus, were collected from the Tigris River near Cizre town. The size (as centroid size) and shape of scale separately were analyzed by 2D geometric morphometric methods. The size and shape of species were different but not for sex, according to ANOVA. Mahalonobis length of CVA results shows that only the difference between Luciobarbus esocinus and Carasobarbus luteus was not significant. DFA results based on T 2 all species scale shape differences were significant except Luciobarbus esocinus and Carasobarbus luteus.

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Structural and Morphometric Study of Scales in Petzea Rudd (Scardinius Racovitzai Müller 1958)

Cited by 3 publications

References 11 publications

New Insights into Geometric Morphometry Applied to Fish Scales for Species Identification

New Insights into Geometric Morphometry Applied to Fish Scales for Species Identification

Short Communication: Morphological study of the scales of Barbodes cf. binotatus (Cyprinidae) from Toba Lake, Indonesia by using Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS)

A Distinction of Some Cyprinid Species from Tigris River Basin According to Scales by Geometric Morphometric Methods

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