Morphological differentiation of the round goby &lt;i&gt;Neogobius melanostomus&lt;/i&gt; (Pallas, 1814) by north-east border of the invasive distribution range

Yurtseva, Anastasia; Uspenskiy, Anton

doi:10.15372/sej20220106

Cited by 1 publication

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“…Conducting a thorough analysis allows for the identification of these differences, forming the basis for employing truss morphometric techniques. Various studies have been conducted that apply the use of morphometry and morphology as differentiators in fish (Kitano et al 2007;Uba 2019;Bakhshalizadeh et al 2022;Yurtseva and Uspenskiy 2022), however the use of similar methods to differentiate males and females has been reported in this research. In the future, it is important to combine this study results with tracing genetic aspects to gain confirmation of genetic variations that could influence the phenotypic characteristics of amphidromous goby fish due to the dynamics of the habitat they experience.…”

Section: Discussionmentioning

confidence: 86%

“…This research is crucial for developing effective management strategies to preserve the sustainability of amphidromous fish resources in nature, particularly in the waters of Gorontalo. Morphological and morphometric analyses represent commonly employed approaches to ascertain the certainty and composition of fish species in aquatic environments as applied to the goby species Ponticola bathybius (Tajbakhsh et al 2018) and Neogobius melanostomus (Yurtseva and Uspenskiy 2022).…”

Section: Introductionmentioning

confidence: 99%

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Morphological characteristic and truss morphometric analysis of amphidromous goby (‘nike') (Teleostei: Gobiiformes) in Bone River, Gorontalo, Indonesia

PASISINGI,

SUCI,

PANIGORO

et al. 2024

Biodiversitas

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Abstract. Pasisingi N, Suci D, Panigoro C, Kadim MK. 2024. Morphological characteristic and truss morphometric analysis of amphidromous goby (‘nike') (Teleostei: Gobiiformes) in Bone River, Gorontalo, Indonesia. Biodiversitas 25: 223-231. One of the preferred fish resources in the Gorontalo region is amphidromous goby species, commonly known by local community as nike fish. In rivers, at the adult stage, these fish are morphologically and potentially morphometrically not necessarily distinguishable among species and between sexes. This research aimed to identify the morphological and morphometric truss characters that distinguish the sexual characteristics of goby fishes in the Bone River, Gorontalo. Fish samples were purposefully collected from eight sites along the river, spanning from upstream to downstream, using a backpack electrofishing device. Sampling occurred in March and November 2022, with morphological analysis and measurements conducted on 336 individuals. The morphometric method measured data from 13 points on the sample body, forming 28 combinations of truss distance characters (A1-A3; B1-B12; C1-C10; D1-D3) connecting these points. Morphologically, the samples were identified as three species, namely Sicyopterus longifilis, Belobranchus belobranchus, and Awaous grammepomus. This study revealed distinctions in morphological characters between male and female individuals. In S. longifilis, males exhibited a relatively slimmer body shape compared to the rounded form of females. Male B. belobranchus displayed more striking coloration than females, while male A. grammepomus featured a lighter brown body color than the paler females. All the morphometric truss characters in this study can be reliably used as a sexual distinguishing characteristic in S. longifilis. As for species B. belobranchus, B7 truss cannot be considered a differentiator. In A. grammepomus, thirteen truss characters (B3, B4, B6, B7, B8, B10, B12, C3, C6, C7, C9, C10, D1) cannot be used to differentiate males and females.

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Section: Discussionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%