Comparative analysis of otolith morphology in three species of Scomber

He, Tao; Cheng, Jiao; Qin, Jianguang; Li, Yun; Gao, Tianxiang

doi:10.1007/s10228-017-0605-4

Cited by 11 publications

(7 citation statements)

References 36 publications

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“…The otoliths of Decapterus ruselli have a shape that is very different from that of the Scombrini species, where the shape tends to be oval due to the convex dorsal and ventral parts, but also has an elongated antirostrum in the end of anterior. Study by [20] about otolith shape analysis is based on both shape index analysis and Fourier ellipse analysis, therefore, the description of the otolith shape and morphology of these three species can be used as a reference for future researchers to carry out otolith shape analysis as an additional classification of species, especially in the species Scomber australasicus and Scomber japonicus which is quite difficult to identify only from its morphological features, because the morphology of the two is quite identical. As for other ways to clarify species identification by [21] about otolith's of Scomberb using state that otolith shape analysis technique using the contour of otolith to classify the stock is considered more efficient than using morphological parameters.…”

Section: Resultsmentioning

confidence: 99%

Asymmetrical individual both left and right otoliths of Tuna Scombrini collected from the Java Sea

Wiadnya,

Khamidah,

Paricahya

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Otolith can be used as a natural marker of fish stock or anomalies between individuals within fish stock. This research aims to study the relationships between fish length and otolith length and confirm differences in otolith shape between species in the Scombrini tribe and Carangidae family (Decapterus ruselli). Sample used in our analysis were collected around July - September 2023 from three different location, Rastrelliger brachysoma (Lekok waters, Pasuruan), Scomber australasicus (Bali Strait waters) and Decapterus ruselli (Sendang Biru, South Malang). Total 96 specimens were identified based on morphological character as Rastrelliger brachysoma, Scomber australasicus and Decapterus ruselli. Each of following samples were cut horizontally at the frontal head to open the skull and remove sagitta otolith below the hindbrain using dissecting set, then cleaned and stored dry in microtube 1,5 ml separately for left and right to further documented using Celestron Digital Microscope Pro Gray USB 44308. Otolith morphometric data collected includes maximum length using TpsDig and weight using analytical balance. The relationship between Forked Length (FL) and otolith length, length-weight relationship of otolith was determined using simple linear regression on software Statistical Product and Service Solutions (SPSS). Paired sample t-test was applied to determine asymmetrical size of left and right otoliths. In this study, it was found that the shape of the otoliths between species has differences in the rostrum, antirostrum, ventral and dorsal parts. FL-otolith length relationship of S. australasicus, R. brachysoma and D. ruselli are Y=0,725+0,164X, r2= 0,519; Y=0,191+0,230X, r2= 0,911; Y=3,156+0,075X, r2=0,071 respectively. The LW sagitta relationship shows that there is a very strong relationship (P<0,05) between L and W of otoliths. The results of the Paired Sample T-test showed that there was no significant difference in the size of the left and right otoliths (Sig>0.05). Otolith shape is influenced by fish behaviour, diet and environment and it may be used as additional information to distinguish between tribe or even species. Otherwise, its asymmetric relationship and LW relationship may be potential new methods for stock discrimination and have other implications such as stock assessment, understanding natural asymmetry, and its potential applications in fisheries management and conservation.

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Section: Resultsmentioning

confidence: 99%

Asymmetrical individual both left and right otoliths of Tuna Scombrini collected from the Java Sea

Wiadnya,

Khamidah,

Paricahya

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…In this study, males and females were moderately discriminated using otolith shape indices. In some of the studies on discrimination between otolith shape indices of different groups, high discrimination success among groups was achieved by using shape indices (He et al ., 2018; Pothin et al ., 2006), but it is seen that shape indices are not very successful in separating groups in most of them (Agüera & Brophy, 2011; Başusta & Khan, 2021; Tuset et al ., 2003). Additionally, since shape indices are calculated using similar otolith measurements, there may be multicollinearity between the data, which is a negative situation in terms of their usefulness.…”

Section: Discussionmentioning

confidence: 99%

Sex‐linked variations in the sagittal otolith biometry ofNemipterus randalli(Russell, 1986) from the eastern Mediterranean Sea

Yazici

2022

Journal of Fish Biology

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Few studies have been conducted on the sagittal otolith shape and morphometry of Nemipterus randalli, and none of these studies has examined the effect of sexual dimorphism on the otolith morphology of this species, therefore this study aimed to contribute to knowledge about the otolith morphology of N. randalli, an invasive fish species for the Mediterranean Sea. For this purpose, a total of 132 samples (51 female and 81 male) were obtained from _ Iskenderun Bay with the help of commercial fishermen in November 2018. Relationships between otolith measurements and fish size were determined. Shape indices and elliptic Fourier coefficients were calculated. Significant differences were detected between males and females in all analysis. The sexes were separated from each other using both shape indices and elliptic Fourier coefficients. However, shape analysis was more effective in distinguishing sexes than traditional morphometric analysis. Asymmetry in the otolith morphology of sexes has been attributed to differences in the growth and sexual maturity of male and female fish. The results of this study indicated that sexual dimorphism in Nemipterus randalli was also reflected in the otolith morphology.

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“…Due consideration should be paid also to the usefulness of other morphometrical methods (e.g. Tuset et al 2016;He et al 2018).…”

Section: Discussionmentioning

confidence: 99%

Comparative otolith morphology and species identification of clupeids from Japan

et al. 2020

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The amount of interspecific and ontogenetic variation in otolith shape among clupeid fishes from Japan was investigated to create a key to identify otoliths of these species found in the stomach contents of piscivorous predators, fossiliferous beds, and archaeological sites. The interspecific comparison with 12 species (Clupea pallasii, Etrumeus micropus, Herklotsichthys quadrimaculatus, Ilisha elongata, Konosirus punctatus, Nematalosa come, Nematalosa japonica, Sardinella aurita, Sardinella melanura, Sardinella zunasi, Sardinops melanostictus, and Spratelloides gracilis) revealed morphological variation in otolith shape, OL:OH and AL:RL ratios, rostrum, marginal structures, and features of the crista superior. Intraspecific changes were analyzed in two species (E. micropus and S. melanostictus), revealing ontogenetic changes in OL:OH ratio and consequently otolith shape as well as changes in marginal features. Overall, this study shows that the key morphological features can be used as diagnostic features for identification of clupeid otoliths.

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Comparative analysis of otolith morphology in three species of Scomber

Cited by 11 publications

References 36 publications

Asymmetrical individual both left and right otoliths of Tuna Scombrini collected from the Java Sea

Asymmetrical individual both left and right otoliths of Tuna Scombrini collected from the Java Sea

Sex‐linked variations in the sagittal otolith biometry ofNemipterus randalli(Russell, 1986) from the eastern Mediterranean Sea

Comparative otolith morphology and species identification of clupeids from Japan

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