scholarly journals Morphometric Measurements, Meristic Counts, and Molecular Identification of Alestes Dentex, Alestes Baremoze, Brycinus Nurse, and Brycinus macrolepidotus from the River Nile at Kreima

2019 ◽  
Vol 7 (1) ◽  
pp. 25-38
Author(s):  
Amna T. M. Mohammed ◽  
Zuheir N. Mahmoud ◽  
Hind M. Abushama
Keyword(s):  
Lateral Line ◽  
Function Analysis ◽  
Principal Component ◽  
River Nile ◽  
Morphometric Measurements ◽  
Morphometric Characters ◽  
Main River ◽  
Meristic Counts ◽  
Rapd Pcr ◽  
Successful Amplification

Introduction: Twenty-two morphometric characters and seven meristic counts were recorded from 324 Alestes specimens from Kreima at the River Nile. Materials and Methods: Specimens collected were identified to the species level as Alestes baremoze (100 specimens), Brycinus nurse (100 specimens), Brycinus macrolepidotus (24 specimens), and Alestes dentex (100 specimens). The principal component analysis showed that the lateral line scales and the scale above the lateral line contributed to the percentage variance by 97.01% and 2.56%, respectively. Discriminant function analysis was done to discriminate between field-collected samples of Alestes sp. The LLS, AFR, and LDFL (Longest of Dorsal Fin Lings) were found to be the main characters that discriminate between the four populations. Results and Discussion: The first function showed that they were significantly different. This discrimination was a complete one since 98.1% of original grouped specimens and 97.8% of the cross-validated ones were correctly classified. The scatter plot of Discriminant scores from the three functions showed some relatedness between Alestes baremoze and Alestes dentex. 16S ribosomal RNA primers have been used to identify the species at the molecular level. All species have shown a characteristic band (680 bp) indicating successful amplification. Five RAPD primers have been used to investigate the Alestes species. Similar and dissimilar DNA bands indicate the evolutionary connections and genetic spacing, respectively. The derived dendrograms based on morphometric measurements and meristic counts were closer to that derived from the RAPD PCR results. Conclusion: The study showed co-existence of four Alestes species in the main River Nile.

Land-Mark based morphometric and meristic variations in two congeneric hilsha population, Tenualosa ilisha and Tenualosa toli from Bangladesh water bodies

2020 ◽  
Vol 6 (2) ◽  
pp. 265-282
Author(s):  
Mithun Das ◽  
Md Mahiuddin Zahangir ◽  
Fatema Akhter ◽  
Md Main Uddin Mamun ◽  
Md Moudud Islam
Keyword(s):  
Function Analysis ◽  
Morphological Characteristics ◽  
Morphological Differentiation ◽  
Principal Component ◽  
Meristic Characters ◽  
Morphometric Measurements ◽  
Network Measurements ◽  
Morphometric Characters ◽  
Marine Population ◽  
Tenualosa Ilisha

The morphometric characters are effectively used for the better differentiation among the fish population and sustainable management. The appraisal of the natural population stock and morphological variation within and between two hilsha species (Tenualosa ilisha and Tenualosa toli) from three different habitat (Coastal, riverine and marine) of Bangladesh, were investigated by applying the land mark based morphometric and meristic variation measurement methods. All data were adjusted and Univariate ANOVA, where discriminant function analysis (DFA) and principal component analysis (PCA) exhibited the divergences in eight morphometric measurements and eight truss network measurements among the three stocks of T. ilisha. The 1st DFA accounted for 89.8% & 87.4% and the second DFA resolved 10.2% and 12.6%, respectively in morphometric characteristics variation among the group studied. Scattered plotting from PCA and dendogram from cluster analysis (CA) revealed that, the river habitants were morphologically different from the coastal and marine population. Twelve of fifteen morphometric measurements and thirteen of fourteen truss network measurements showed significant differences between T. ilisha and T. toil with significant variation in meristic characters. PCA revealed 89.23% and 88.29% in case of morphometric and truss measurement respectively confirmed high degree of variations in morphological characteristics between two species. Overall, our results based on morphometrics with truss measurements together provide useful information about the morphological differentiation which will be helpful for sustainable exploration and effective management for these two species. Asian J. Med. Biol. Res. June 2020, 6(2): 265-282

scholarly journals Sexual dimorphism in the Spotted Stinger Inimicus sinensis (Valenciennes, 1833) and notes on pore structures on the body

2020 ◽  
Vol 13 (1) ◽  
Keyword(s):  
Sexual Dimorphism ◽  
Principal Component ◽  
The Body ◽  
Body Region ◽  
Head Width ◽  
Base Length ◽  
Morphometric Characters ◽  
Lower Jaw ◽  
Meristic Counts ◽  
Fin Ray

Spotted stinger individuals, Inimicus sinensis, collected from Carles, Iloilo, Philippines exhibited previously-unreported sexual dimorphism. Thirty-three morphological measurements, including standard length, and fourteen meristic counts from 99 specimens (47 males and 52 females) were analyzed for sexual dimorphism. Most morphometric characters differed significantly between the sexes, whereas no differences were found in meristic counts. Dorsal and anal-fin and free pectoral-fin ray lengths were greater in male specimens. On the other hand, the head and body region were relatively larger in female specimens. Principal Component Analysis (PCA) extracted two principal components from significantly different parameters, which explained 62.29 % of the cumulative variances. Variations in the two major components resulted from: head width, upper jaw, lower jaw, snout, pre-dorsal, pre-anal-fin, and anal-fin base lengths in PC1 (45.65 %); and orbit diameter and anal-fin base length in PC2 (16.64 %). Additionally, a single anterolateral pore on the body and pores above the lateral-line are described, although no evidence of association with other organs was found.

scholarly journals Detection of Morphometric Differentiation of Liza aurata (Pisces: Mugilidae) in Southeastern of the Caspian Sea, Iran

Our Nature ◽  
2014 ◽  
Vol 11 (2) ◽  
pp. 126-137 ◽  
Author(s):  
S. Kohestan-Eskandari ◽  
H. AnvariFar ◽  
H. Mousavi-Sabet
Keyword(s):  
Caspian Sea ◽  
Function Analysis ◽  
Univariate Analysis ◽  
Principal Component ◽  
The Caspian Sea ◽  
Morphometric Measurements ◽  
Linear Discriminant ◽  
Liza Aurata ◽  
High Degree ◽  
Management And Conservation

A 13-landmark morphometric truss network system was used for 135 specimens to investigate the hypothesis differentiation of golden grey mullet along the southeastern Caspian Sea. Univariate analysis of variance showed significant differences among the means of the three groups for 35 standardized morphometric measurements out of 78 characters studied. In linear discriminant function analysis (DFA), the overall assignment of individuals into their original groups was 66.7%. The proportions of individuals correctly classified into their original groups were 62.5%, 59.1%, 76.5% in Neka, Behshahr and Galogah populations, respectively. The Principal Component Analysis (PCA) showed that the specimens grouped into 2 areas with high degree of overlap. Clustering analysis based on Euclidean square distances among the studied groups of centroids using an UPGMA resulted segregation of the three populations into two distinct clusters. These results could be of interest for management and conservation programs of this species in the Caspian Sea.DOI: http://dx.doi.org/10.3126/on.v11i2.9595 Our Nature 2013, 11(2): 126-157

scholarly journals Morphometric variation of the horseshoe crab Tachypleus gigas (Xiphosura: Limulidae) from the Banyuasin estuarine of South Sumatra, Indonesia

2021 ◽  
Vol 22 (11) ◽  
Author(s):  
Fauziyah FAUZIYAH ◽  
APON Z. MUSTOPA ◽  
FATIMAH FATIMAH ◽  
ANNA I. S. PURWIYANTO ◽  
ROZIRWAN ROZIRWAN ◽  
...  
Keyword(s):  
Horseshoe Crab ◽  
Stock Assessment ◽  
Function Analysis ◽  
Principal Component ◽  
Growth Patterns ◽  
The Body ◽  
Morphometric Variation ◽  
Morphometric Characters ◽  
Morphological Studies ◽  
Significant Difference

Abstract. Fauziyah, Mustopa AZ, Fatimah, Purwiyanto AIS, Rozirwan, Agustriani F, Putri WAE. 2021. Morphometric variation of the horseshoe crab Tachypleus gigas (Xiphosura: Limulidae) from the Banyuasin estuarine of South Sumatra, Indonesia. Biodiversitas 22: 5061-5070. Morphological studies are essential for fish resource management, ecology, conservation, and stock assessment. This research was conducted to characterize the morphological variation of the coastal horseshoe crab (Tachypleus gigas) from the Banyuasin estuarine, South Sumatra, Indonesia. The body weight (BW), prosoma width (PW), carapace length (CL), telson length (TEL), and total length (TL) were measured for describing the morphometric variability of T. gigas. A total of 70 T. gigas (32 females and 38 males) were found using trammel net fishing and bottom gillnet during the survey. Multivariate and allometric methods analyzed their morphometric characters. Based on Kruskal- Wallis tests, the result showed a significant difference in somebody measurements (TL and CL) between males and females. The principal component analysis (PCA) results showed that all morphometric characters had a strong correlation in both sexes, so the first principal component (PC1) values were 92% and 72%. In comparison, the second principal component (PC2) values were 5% and 20% in females and males, respectively. The results of discriminant function analysis (DFA) suggested that only one (BW) of the five morphometric characters was significant in separating both sexes. Both sexes were also revealed variations in growth patterns based on the allometric analysis results. These results were expected to be used as a basis for managing the horseshoe crab population-based conservation.

scholarly journals Landmark-based morphometric and meristic variations of Glossogobius giuris in three stocks

2013 ◽  
Vol 10 (2) ◽  
pp. 375-384 ◽  
Author(s):  
MFA Mollah ◽  
S Yeasmine ◽  
MB Hossen ◽  
AKS Ahammad
Keyword(s):  
Lateral Line ◽  
Hierarchical Cluster ◽  
Morphometric Measurements ◽  
Dorsal Fin ◽  
Meristic Counts ◽  
Fin Rays ◽  
Close Relationship ◽  
Transverse Scale ◽  
Glossogobius Giuris ◽  
Pectoral Fin Rays

Landmark-based morphometric and meristic analysis of pond, haor and estuary populations of Glossogobius giuris (Hamilton,1822) (Perciformes:Gobiidae) were done to find out variations among the three stocks. Samples were collected from three different regions such as pond of Mymensingh, haor of Kishoreganj and estuary of Barisal. Significant differences (*P<0.01) were observed in 13 general morphometric and 23 size adjusted landmark-based morphometric measurements among three stocks. Among the 11 meristic counts the first dorsal fin rays (D1FR), transverse scale above lateral line (TSALL), branchiostegal rays and number of vertebrae were same among fishes of these stocks. In case of pectoral fin rays (PcFR) and transverse scale on lateral line (TSOLL) the haor stock was significantly different from other two stocks. In discriminant space, pond stock was isolated from other two stocks. On the other hand, haor and estuary stocks showed very close relationship. A dendrogram based on the hierarchical cluster analysis using size adjusted general morphometric and landmark measurements formed two main clusterspond stock in one cluster and other two stocks (haor and estuary) remained in another cluster. It indicates that pond stock was separated. The second cluster explained that haor and estuary stocks had very close relationship.DOI: http://dx.doi.org/10.3329/jbau.v10i2.14931 J. Bangladesh Agril. Univ. 10(2): 375-384, 2012

Stock delineation of the long-whiskered catfish, Sperata aor (Hamilton 1822), from River Ganga by using morphometrics

2019 ◽  
Vol 70 (1) ◽  
pp. 107 ◽  
Author(s):  
M. Afzal Khan ◽  
Aafaq Nazir
Keyword(s):  
Discriminant Function ◽  
Fish Species ◽  
Discriminant Function Analysis ◽  
Function Analysis ◽  
Mantel Test ◽  
Morphometric Measurements ◽  
Distance Measurements ◽  
Morphometric Characters ◽  
Sampling Locations ◽  
River Ganga

Long-term isolation of populations and interbreeding can lead to morphometric variations among fish populations. This study was conducted with the objective to delineate stock structure of Sperata aor on the basis of morphometric characters, using truss network of the fish body. In total, 407 S. aor samples were collected from the four sampling locations of the Ganga River, viz. Narora, Kanpur, Varanasi and Bhagalpur. In total, 28 truss distance measurements were created by joining 13 morphometric landmarks on the fish body. MANCOVA showed significant (P&lt;0.001) morphological variance among the sampling locations for the target fish species. Univariate ANOVA showed significant (P&lt;0.001) differences in each of the morphometric measurements among the fish from different sampling locations. Wilk’s lambda test of canonical discriminant function analysis showed significant (P&lt;0.001) differences in morphometric measurements of the fish from all sampling locations. Discriminant function analysis using Jackknife (leave-one-out) cross-validation classification showed 87.5% correct classification of the individuals into their original populations. Mantel test showed an overall good correlation between the genetic and morphometric datasets in the selected fish species. The results of this study can be employed in formulating stock-specific management strategies for S. aor from River Ganga.

scholarly journals Intraspecific morphometric variability in the populations of Barilius bendelisis (Hamilton) from the Alaknanda basin of Central Himalaya

2018 ◽  
Vol 10 (4) ◽  
pp. 1199-1203
Author(s):  
Sumit Kumar ◽  
Deepak Singh
Keyword(s):  
Function Analysis ◽  
Univariate Analysis ◽  
Principal Component ◽  
Stock Structure ◽  
Central Himalaya ◽  
Morphometric Traits ◽  
Morphometric Characters ◽  
Barilius Bendelisis ◽  
Phenotypic Variations ◽  
Conservation And Management

The present study observed variations in the morphological traits of hill trout, Barilius bendelisis (Hamilton, 1807) from Alaknanda basin of Central Himalaya. A total of 124 samples of B. bendelisis were collected from three different tributaries, Dugadda Gad, Khankhra Gad and Khandah Gad of Alaknanda river between March 2015 to April 2016. Ninety morphometric characters were measured for each specimen. Statistical tools, univariate analysis of variance (ANOVA), principal component analysis (PCA) and discriminant function analysis (DFA) were used to differentiate the populations of B. bendelisis. PCA extracted eight significant morphometric traits explaining 87.9% of total variation among the three populations. DFA revealed that 83.1% specimens were retained into their original groups. Environmental factors were attributed to phenotypic variations among closely related populations. The present study is a first attempt on stock structure of B. bendelisis from different tributaries of Alaknanda river. The study will help in future conservation and management of this fish species across Uttarakhand region, India.

Morphological differentiation in African catfish (Clarias gariepinus) from three different populations in Nigeria

2021 ◽  
Vol 16 (1) ◽  
pp. 13-20
Author(s):  
Popoola Omoniyi Michael ◽  
Olagunju Oluwatosin Olubunmi
Keyword(s):  
Clarias Gariepinus ◽  
Morphological Differentiation ◽  
Principal Component ◽  
Individual Species ◽  
African Catfish ◽  
Morphometric Traits ◽  
Meristic Characters ◽  
High Positive Correlation ◽  
Meristic Counts ◽  
Major Cluster

AbstractIntraspecific morphological variation in Clarias gariepinus was studied in three water bodies. Twenty-three morphometric characteristics and seven meristic were used. Principal component (PC) analysis showed that morphometric traits of River Osun and Ogbese were somewhat related while that of Aago showed no relatedness, there were no difference among the meristic counts of the populations. PC1, and PC2 accounted for 93% and 4% of the variation observed in the populations. High positive correlation was observed in Aago (r = 0.872, b = 2.10) and Ogbese population while low correlation and negative allometric growth (r = 0.425 and b= 1.38) was observed in Asejire population. Cluster analysis revealed that three studied populations are separated into two major clusters, with samples from Asejire and Ogbese population found within the same cluster but different sub- clusters, similarly some of samples from Aago were also within the same cluster while samples 10 were found on a separate and major cluster. The study confirms the variability among individual species within each population, indicates the presence of genetic diversity among the populations of C. gariepinus and the Pre-anal distance and dorsal fin ray count could be employed in the identification of populations of catfish. Key words: morphometric traits, meristic characters, populations, allometric

scholarly journals Skull morphometric characters in parrots (Psittaciformes)

2020 ◽  
Vol 28 (1) ◽  
pp. 104-120
Author(s):  
Tibor Pecsics ◽  
Miklós Laczi ◽  
Gergely Nagy ◽  
Tamás Kondor ◽  
Tibor Csörgő
Keyword(s):  
Ventral View ◽  
Relative Size ◽  
Relative Length ◽  
Principal Component ◽  
Relative Width ◽  
Geometric Morphometric ◽  
Morphometric Characters ◽  
Lacrimal Bone ◽  
The Tropics ◽  
Avian Group

AbstractParrots (Psittaciformes) are a unique and diverse avian group and vary tremendously in size, shape, and colour. Mainly distributed throughout the tropics and subtropics, most species of parrots are largely or exclusively arboreal with several exceptions. The species also differ in diet and habitat, which led to different musculoskeletal adaptations of the skull. However, parrots have conspicuous generalized external features; in this recent study, we tried to increase our knowledge of the cranial shape and foraging habits. A geometric morphometric approach was used to analyse two-dimensional cranial landmarks. We used principal component (PC) analyses on measurements that may be related to diet. The PCs described the relative height of the cranium, the relative length and curvature of the beak, differences in the orientation and curvature of the lacrimal bone and the upper margin of orbits, variation in the size and position of the palatine bone and the relative width of the cranium, and variation in the relative size of the neurocranium compared to the viscerocranium. The dietary categories overlap in the morphospace but the analysis in lateral and ventral view resulted in significant differences.

scholarly journals Polikromatik, dimorfisme seksual, dan redeskripsi spesies ikan red devil, Amphilophus amarillo [Stauffer & McKaye, 2002] di Waduk Sermo Yogyakarta

2018 ◽  
Vol 18 (1) ◽  
pp. 69
Author(s):  
Sitty Ainsyah Habibie ◽  
Djumanto Djumanto ◽  
Murwantoko Murwantoko
Keyword(s):  
Control Region ◽  
Principal Component ◽  
Gill Tissue ◽  
Morphometric Character ◽  
Fish Sample ◽  
Trophic Polymorphism ◽  
Sex Dimorphism ◽  
Morphometric Characters ◽  
Male And Female ◽  
Fish Group

Red devil has been extensively researched due to extremely high morphometric and chromatophore variations, including the phenomena of polychromatic and trophic polymorphism. The purpose of this study was to identify and observe the phenomenon of sex dimorphism that occurs in polychromatic red devil species which caught in Sermo Reservoir. Fish sample as much as 240 individual was collected from fishermen catch during November 2016-September 2017 by using gill nets, cest nets, and fishing rods. Subsequently, the fish sample was grouped based on color and sex, the namely group of red devil red, red devil black, and red devil reddish black. The morphometric character data of 21 units were measured in each fish sample, whereas the DNA samples were taken from the gill tissue on each species of two individuals. The morphometric character data was analyzed for discriminant distance, while DNA was analyzed by BLAST (Basic Local Allignment Search Tools) from NCBI. The result of the principal component analysis and discriminant function showed the three group of fish can be distinguished by the characters around the head. The T-test of male and female morphometric characters in each fish group showed the phenomenon of sex dimorphism. Canonical and dendrogram diagrams consistently classify the three group of fish as the same species but are segregated by sex so that significantly dimorphism occurs. The mitochondrial sequencing results of the DNA control region show that among the red devil fish group found in the Sermo Reservoir is a species of A. amarillo.AbstrakRed devil telah banyak diteliti karena variasi morfometrik dan kromatofora yang sangat tinggi, termasuk di dalamnya fenomena polikromatisme dan trofik polimorfisme. Penelitian ini bertujuan untuk mengamati polikromatik dan dimor-fisme seksual serta mengidentifikasi spesies red devil di perairan Waduk Sermo Yogyakarta. Contoh ikan sebanyak 240 ekor diambil dari hasil tangkapan nelayan selama bulan November 2016-September 2017 dengan menggunakan jaring insang, jala dan pancing. Selanjutnya contoh ikan dikelompokkan berdasarkan warna dan jenis kelamin, yaitu kelompok red devil merah, red devil hitam, dan red devil merah kehitaman. Data karakter morfometrik sebanyak 21 unit diukur pada setiap contoh ikan, sedangkan contoh DNA diambil dari jaringan insang pada masing-masing kelompok ikan seba-nyak dua ekor. Data karakter morfometrik dianalisis pembedanya, sedangkan DNA dianalisis dengan BLAST (Basic Local Allignment Search Tools) dari NCBI. Hasil analisis komponen utama dan fungsi diskriminan menunjukkan ketiga kelompok ikan dapat dibedakan berdasarkan karakter yang berada di sekitar kepala. Uji t terhadap karakter morfome-trik jantan dan betina pada masing-masing kelompok ikan menunjukkan fenomena dimorfisme seksual. Diagram kanonikal dan dendrogram konsisten mengelompokkan ketiga kelompok ikan tersebut sebagai spesies yang sama, namun terpisah berdasarkan jenis kelamin sehingga sangat nyata terjadi dimorfisme. Hasil sekuensing mitokondria DNA control region menunjukkan seluruh kelompok ikan red devil yang ditemukan di Waduk Sermo merupakan spesies Amphilophus amarillo.

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