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

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.

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Two new species of lizards from the Liolaemus lineomaculatus section (Squamata: Iguania: Liolaemidae) from southern Patagonia

Zootaxa ◽

10.11646/zootaxa.3120.1.1 ◽

2011 ◽

Vol 3120 (1) ◽

pp. 1 ◽

Cited By ~ 10

Author(s):

MARIA FLORENCIA BREITMAN ◽

MICAELA PARRA ◽

CRISTIAN HERNÁN FULVIO PÉREZ ◽

JACK WALTER SITES, JR.

Keyword(s):

New Species ◽

Analysis Of Variance ◽

Genetic Characterization ◽

Function Analysis ◽

Univariate Analysis ◽

Principal Component ◽

Genetic Distances ◽

Southern Patagonia ◽

Two New Species ◽

Genetic Characters

Two new species of the lineomaculatus clade of the Liolaemus lineomaculatus section are described from southern Patagonia in Argentina. Liolaemus morandae sp. nov. is found in S Chubut province and Liolaemus avilae sp. nov. inhabits NW Santa Cruz province. Several tests were performed to diagnose these new species as distinct lineages. Univariate analysis of variance (ANOVA), principal component analysis (PCA), discriminant function analysis (DFA), non-parametric multivariate analysis of variance (NPMANOVA), as well as a genetic characterization through molecular analysis of variance (AMOVA) were performed; genetic distances between described and these new species are reported. The new Liolaemus species differ from other members of the lineomaculatus group in morphometric, meristic, qualitative and genetic characters; moreover they inhabit different phytogeographical provinces and districts. With these descriptions, the number of species now recognized in the lineomaculatus section is twenty one (including one more description that is in press).

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

Our Nature ◽

10.3126/on.v11i2.9595 ◽

2014 ◽

Vol 11 (2) ◽

pp. 126-137 ◽

Cited By ~ 3

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

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Stock Identification of Engraulis encrasicolus (Linnaeus, 1758) by Discriminant Function Analysis (DFA) of Morphometric Characters in The North of Atlantic and Mediterranean Moroccan Coasts

Turkish Journal of Fisheries and Aquatic Sciences ◽

10.4194/1303-2712-v21_11_03 ◽

2021 ◽

Vol 21 (11) ◽

pp. 553-558

Author(s):

Mouna El qendouci ◽

Fatima Wariaghli ◽

Mehria Saadaoui ◽

Lobna Boudaya ◽

Lassad Neifar ◽

...

Keyword(s):

Discriminant Function ◽

Discriminant Function Analysis ◽

Function Analysis ◽

Stock Structure ◽

Morphometric Characters ◽

European Anchovy ◽

Engraulis Encrasicolus ◽

The North ◽

Fishing Vessels ◽

The Mediterranean

The European anchovy, Engraulis encrasicolus (Linnaeus, 1758) is a small pelagic fish found in the eastern Atlantic, the Mediterranean Sea and the Black Sea. Anchovy (E. encrasicolus) are among the important finfishes harvested in Moroccan coasts. The stock structure of European anchovy in NW Africa is not truly known (FAO, 2013). To effectively manage the anchovy fisheries, it is important to understand the anchovy stock structure. Therefore, discriminant function analysis (DFA) based on morphometric characters was conducted on a total of 204 adult anchovy specimens, seasonally collected by commercial fishing vessels from the region of Mehdia in the North Atlantic area and from the region of M’diq in the Mediterranean coast during the year 2019. Body shape variation, which is often environmentally induced, may provide a good record population structuring. Our data were subjected to univariate statistics of variance (ANOVA) by using SPSS 20 software version. The morphometric characteristics show a separation of two stocks of Engraulis encrasicolus between the two localities. These findings will have major implications for anchovy fisheries management in Morocco.

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Identification of morphometric variation of Aegel marmelos (L.) Correa correlated with habitat types in Western Terai

International Journal of Frontiers in Life Science Research ◽

10.53294/ijflsr.2021.1.1.0031 ◽

2021 ◽

Vol 1 (1) ◽

pp. 01-017

Author(s):

Bimal Bahadur Kunwar

Keyword(s):

Principal Component ◽

Morphological Characters ◽

Habitat Types ◽

Morphometric Traits ◽

Morphometric Variation ◽

Morphometric Characters ◽

Grouping Pattern ◽

And Cluster Analysis ◽

Disc Level ◽

East West

Aegle marmelos (L.) Correa locally called “Bael” is an economically important plant mainly harvested and traded for medicinal as well as religious purposes. Most of the collection of the plant is from forest. Due to habitat change, deforestation and over harvesting, it is feared that such important plant and its precious genetic diversity may be lost from the nature. Responding to these challenges a major initiative has been launched in the Western Terai Landscape Complex of Nepal to identify morphometric variability in A. marmelos. Morphometric characters variation of this species in Western Terai Landscape Complex was statically and numerically evaluated. Sixteen populations were analysed, using 27 morphological characters of leaves and fruit, collected during 2007/2008 naturally. Most of the morphological characters were not significant with the east-west longitudinal gradient except few were, probably because of small gradient. The variation in the A. marmelos is clearly verified by uni- and multivariate statistics. Highest variation was observed in the (DL) Disc Level (CV= 6.08) from different morphometric characters and later that in PL and B. These DL, PL and B were determining characters of morphometric variation. Similarly, principal component and cluster analysis through forming dendrogram of morphometric traits indicated different grouping pattern of populations. The populations that are nearer to each other are not cluster together. At different sites of sampling analysis of variance in the morphometric traits revealed remarkable variation among population.

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

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d221143 ◽

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.

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

Asian Journal of Medical and Biological Research ◽

10.3329/ajmbr.v6i2.48072 ◽

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

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Phenotypic plasticity in Barilius vagra (Hamilton, 1822) (Teleostei: Danionidae) from two geographically distinct river basins of Indian Himalaya

Journal of Threatened Taxa ◽

10.11609/jott.7414.13.13.19976-19984 ◽

2021 ◽

Vol 13 (13) ◽

pp. 19976-19984

Author(s):

Sumit Kumar ◽

Sharali Sharma ◽

Deepak Singh

Keyword(s):

Phenotypic Plasticity ◽

River Basin ◽

Function Analysis ◽

Mesh Size ◽

River Basins ◽

The Body ◽

Morphometric Traits ◽

Morphometric Characters ◽

Indian Himalaya ◽

Significant Difference

Truss-based morphometric analysis was used to examine phenotypic plasticity of Barilius vagra (Hamilton, 1822) inhabiting the tributaries of the Alaknanda (Ganga River basin) and Chenab (Indus River basin), two geographically distinct river basins in the Indian Himalaya. Fourteen landmarks were connected to generate a truss network of 90 parameters on the body of fish. Eighty morphometric traits out of ninety morphometric measurements explained statistically significant difference among six sampling locations of Barilius vagra from streams in the Alaknanda and Chenab basins. Discriminant function analysis revealed 82% of Barilius vagra specimens originally classified into their own groups. 95% of the variance was explained by 13 principal components. Morphometric characters (1–6, 1–13, 2–5, 2–6, 2–14, 3–6, 4–6, 4–14, 6–12, 7–8, 7–9, 10–11, and 13–14) contributed greatly in differentiation of B. vagra populations from different river basins. The Alaknanda basin reflected some mixing within populations, which may be due to common environmental conditions and fish migration in these streams. This study will be helpful in framing site-specific conservation and management strategies, such as net mesh size selection, avoiding overexploitation, stock augmentation and food availability for different fish populations.

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Phenotypic differentiation of Barilius bendelisis (Cypriniformes: Cyprinidae) in four rivers from Central Indian Himalaya

Revista de Biología Tropical ◽

10.15517/rbt.v63i1.14252 ◽

2015 ◽

Vol 63 (1) ◽

pp. 165 ◽

Cited By ~ 2

Author(s):

Javaid Iqbal Mir ◽

Neha Saxena ◽

Rabindar Singh Patiyal ◽

Prabhati Kumari Sahoo

Keyword(s):

Factor Analysis ◽

Cold Water ◽

Univariate Analysis ◽

Interspecific Variation ◽

Head Region ◽

Morphometric Characters ◽

Indian Himalaya ◽

The Family ◽

Barilius Bendelisis ◽

Leave One Out

Barilius bendelisis, commonly known as Indian Hill Trout is an upland water fish of South East Asia. It belongs to the family Cyprinidae and dwells in shallow, clear and cold water. In this study, the intraspecific variation of Barilius bendelisis, on the basis of morphometric characters, was investigated. Altogether, 402 specimens were collected from four rivers in the Central Indian Himalaya. A truss network was constructed by interconnecting 12 landmarks to yield 30 distance variables that were extracted from digital images of specimens using tpsDig2 and PAST software. Allometric transformed truss measurements were subjected to univariate analysis of variance, factor analysis and discriminant analysis. All variables exhibited significant differences between the populations. Altogether 88% of the specimens were classified into their original populations (81.98% under a ‘leave-one-out’ procedure). With factor analysis measurements of the head region, the middle portion and the caudal region had high loadings on the first and second axis. The results indicated that B. bendelisis has significant phenotypic heterogeneity between the geographically isolated regions of Central Indian Himalaya. We hypothesize that the marked interspecific variation in B. bendelisis is the result of local ecological conditions.

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Taxonomic revision and morphometric analysis of Meteorus Haliday, 1835 (Hymenoptera: Braconidae: Meteorinae) from Colombia

Zootaxa ◽

10.11646/zootaxa.2938.1.1 ◽

2011 ◽

Vol 2938 (1) ◽

pp. 1 ◽

Cited By ~ 6

Author(s):

HELMUTH AGUIRRE ◽

CARLOS E. SARMIENTO ◽

SCOTT R. SHAW

Keyword(s):

Function Analysis ◽

Taxonomic Revision ◽

Taxonomic Diversity ◽

Neotropical Region ◽

Species Differentiation ◽

Agricultural Pests ◽

Morphometric Traits ◽

Morphometric Characters ◽

New Hosts ◽

Components Analysis

Meteorus Haliday 1835 (Hymenoptera: Braconidae) is a cosmopolitan genus with nearly 250 species around the world. Its species are koinobiont endoparasitoids that use Coleoptera and Lepidoptera caterpillars as hosts, some of them are important agricultural pests. The Meteorus fauna is better known for the Palearctic, Nearctic, Afrotropical and Australian regions, but these wasps are poorly studied in the Neotropical region. From Colombia only two species have been previously reported. The goals of this paper are to study the taxonomic diversity of Meteorus from Colombia and to test the taxonomic value of morphometric characters used to discriminate species. The taxonomic value of the morphometric traits is tested using discriminant function analysis, principal components analysis and graphical exploration of data. A taxonomic key and diagnoses for the species are presented. Nineteen species are newly described: M. amazonensis sp. nov., M. andreae sp. nov., M. antioquensis sp. nov., M. boyacensis sp. nov., M. calimai sp. nov., M. caquetensis sp. nov., M. cecavorum sp. nov., M. chingazensis sp. nov., M. dixi sp. nov., M. farallonensis sp. nov., M. guacharensis sp. nov., M. guineverae sp. nov., M. huilensis sp. nov., M. iguaquensis sp. nov., M. jerodi sp. nov., M. magdalensis sp. nov., M. muiscai sp. nov., M. quimbayensis sp. nov., M. santanderensis sp. nov. Sixteen species are new records for Colombia: M. alejandromasisi Zitani, M. arizonensis Muesebeck, M. corniculatus Zitani, M. desmiae Zitani, M. dimidiatus (Cresson), M. dos Zitani, M. mariamartae Zitani, M. megalops Zitani, M. oviedoi Shaw & Nishida, M. papiliovorus Zitani, M. pseudodimidiatus Zitani, M. rogerblancoi Zitani, M. rugonasus Shaw & Jones, M. townsendi Muesebeck, M. uno Zitani, M. yamijuanum Zitani. Most of the new species are found in Andean forests above 2000 m. New hosts are recorded for M. alejandromasisi, M. laphygmae, M. papiliovorus and M. rubens. The morphometric traits of the head are the most useful for separating species. In contrast, the wings traits are very labile and species differentiation with only wing characters is difficult.

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

The Open Biology Journal ◽

10.2174/1874196701907010025 ◽

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.

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