scholarly journals Study of Some Morphometric and Meristic Traits of Chirru Snowtrout (Schizothorax esocinus) from River Jhelum, Kashmir, India

2021 ◽  
pp. 25-32
Author(s):  
Bisma Shafi ◽  
T. H. Shah ◽  
F. A. Bhat ◽  
B. A. Bhat ◽  
A. Abubakr ◽  
...  
Keyword(s):  
Environmental Changes ◽  
Condition Factor ◽  
Local Population ◽  
Morphological Characteristics ◽  
Kashmir Valley ◽  
Meristic Characters ◽  
Important Species ◽  
Morphometric Characters ◽  
Nutritional Needs ◽  
Highly Correlated

A study was conducted to analyze morphological characteristics of a Schizothoracid species: Schizothorax esocinus collected from three sites of river Jhelum in Kashmir. S. esocinus is locally known as “Churru” and forms an important food element of the local population., Schizothorax esocinus is one of the most important species in the genus Schizothorax and it has continued to contribute immensely to the nutritional needs, economic growth and development of the Kashmir valley. Furthermore, this fish is very sensitive to any environmental changes so it acts as bioindicator of aquatic pollution. A total of 180 samples were taken for the study of the morphometric and meristic characters utilzing ethnic fishing gears. Thirteen conventional morphometric characters examined in the present study, showed high co-efficient of determination (R2) values ranging from 0.55 to 0.91 for district Srinagar from 0.56 to 0.92 for district Anantnag, and 0.56 to 0.98 for district Baramulla signifying that the traits were highly correlated to each other. Out of six meristic characters examined, two characters were not remarkably different (p>0.05). The fin formula of S. esocinus was devised as D, I + 5-10, P, I + 7-11, C, I + 15-23, A, I + 3-7, LL, 55-170. This study is purely aimed at studying the morphology and meristics of S. esocinus and not at estimating the length-weight relationship or condition factor.

Comparative morphology of the cottid genus Myoxocephalus based on meristic, morphometric, and other anatomical characters

1971 ◽  
Vol 49 (11) ◽  
pp. 1479-1496 ◽  
Author(s):  
Garry I. McT. Cowan
Keyword(s):  
Lateral Line ◽  
Gulf Of Alaska ◽  
Comparative Morphology ◽  
Distinct Species ◽  
Lateral Line System ◽  
Nominal Species ◽  
Meristic Characters ◽  
Important Species ◽  
Morphometric Characters ◽  
Line System

Specimens representing 15 nominal species of the genus Myoxocephalus were subjected to detailed comparative morphological study to determine some of the more important species characteristics and also those indicating potential for expressing phylogenetic progression.Analysis of seven meristic characters revealed that none of them is consistently sexually dependent. Geographic variation within the species indicated the presence of both latitudinal and longitudinal clines. No evolutionary group affinities were evident.The morphology of the cephalic lateral line system, lateral line ossicles, squamation, and olfactory rosettes were found to exhibit a high degree of specificity, especially the first three systems. With the exception of the lateral line ossicles all evidenced some potential as indicators of phylogeny.Analysis of 23 morphometric characters was accomplished by cluster analysis. The resultant clusters indicated heterogenous unnatural groupings.On the basis of these analyses well-defined species differences exist in most of the major morphological features. The nominal species M. scorpius (Linnaeus) includes three distinct species (Gulf of Alaska, Arctic–East coast, and European). In addition, the data indicate that the genus is probably composed of three basic evolutionary lines: the Holarctic–Atlantic, Bering Sea–Transpacific, and Asiatic.

scholarly journals Morphometric and Meristic Analysis of Sillaginopsis panijus Along with Seasonal Variation from Rupnarayan River, West Bengal, India

2021 ◽  
Vol 14 (4) ◽  
pp. 1737-1745
Author(s):  
Monalisa Malik Mukherjee
Keyword(s):  
Dissolved Oxygen ◽  
Fishery Management ◽  
West Bengal ◽  
Natural Habitat ◽  
Species Abundance ◽  
Morphological Characteristics ◽  
Meristic Characters ◽  
Morphometric Characters ◽  
Significant Difference ◽  
Sustainable Fishery

Present study is a first-time report of flathead Sillago, Sillaginopsis panijus (Hamilton, 1822), from Rupnarayan River of West Bengal. Seasonal sampling performed from January 2019- February 2020 by collection of water sample and fish sample in the morning time 5.00 A.M. – 8.00 A.M. A total of 116 specimens of Sillaginopsis panijus (Hamilton, 1822) were collected from four different sampling stations of Rupnarayan river (22.23°N 88.03°E to 22.40°N 87.36°E), West Bengal, India. Present work is a morphometric and meristic data analysis has been provided in detail. Total 23 morphometric characters and 13 meristic characters were analyzed. Morphological characteristics of the species were present to confirm the occurrence and distribution of Sillaginopsis panijus (Hamilton, 1822) along the riverine water of Rupnarayan. The physico-chemical parameters of water have been measured such as temperature of water, dissolved oxygen, pH and salinity. The statistical analysis of multivariate test with post-Hoc analysis and correlation were established with the abundance of S. panijus (Hamilton, 1822) in relation to water parameters. The result shows the dissolved oxygen, temperature, pH and salinity played a most important role in the distribution of S. panijus (Hamilton, 1822). The result shows a statistically significant difference in distribution of fish species, F (12, 8) =18.86, p<0.0005; Wilk’s Λ=0.001, partial η2=0.966. Present study certainly provides the baseline information of Sillaginopsis panijus (Hamilton, 1822) from the Rupnarayan river of West Bengal, India. This record of Sillaginopsis panijus (Hamilton, 1822) may assist the fishery scientist, researchers, policy planners and conservationists to develop sustainable fishery management. Therefore, this study was considered as a first step on morphometric characters for its development and documenting the extension of the distribution and ecological changes in its natural habitat which helps to conserve this species abundance in this area and prevent overexploitation.

scholarly journals Species-specific morphological characteristics of adult and embryonic Capillariа obsignata roundworms (Nematoda, Capillariidae)

2018 ◽  
Vol 25 (4) ◽  
Author(s):  
V. A. Yevstafyeva ◽  
V. V. Stybel ◽  
T. A. Sharavara ◽  
V. V. Melnychuk ◽  
I. О. Yasnolob ◽  
...  
Keyword(s):  
Embryonic Development ◽  
Morphological Changes ◽  
Morphological Characteristics ◽  
Adult Males ◽  
Meristic Characters ◽  
Morphometric Characters ◽  
Nematode Eggs ◽  
Males And Females ◽  
Species Specific ◽  
Shape And Size

The abundance of Capillaria obsignata Madsen, 1945, the causative agent of chicken capillariasis, was studied in the central region of Ukraine. Differential morphometric characters are determined for adult males and females of C. obsignata. The species-specific variability of its morphological parameters is characterized. New data is received on the meristic characters of C. obsignata eggs extracted from different substrates. The stages of embryonic development are determined in laboratory cultures of these nematodes, taking into account their meristic and morphological changes. Capillaria obsignata parasites are very common at the poultry farms of Poltava and Kyiv regions of Ukraine. Their abundance index is 3.4, and the intensity of infection varies from 3 to 317 specimens. Differential morphometric species-specific characters of adult C. obsignata males are the shape and size of the pseudobursa, spicule, spicule sheath. Adult females of the species can be identified by the shape and size of the vulva, the distance from the esophagus end to the vulva, and the length of the vagina. The meristic characters of nematode eggs, though typical for the species, may change depending on the sampled substrate. The parasite’s embryonic development involves five morphologically and meristically different stages. The invasive larvae of this species developed in the eggs before the 12th day of culturing in laboratory conditions at 25 °С. The invasive larvae’s viability was 90.3 ± 1.5%.

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 Karakterisasi Morfologi Ikan Bujuk (Channa lucius) pada Perairan Danau Singkarak Sumatera Barat, Rawa Banjiran Tanjung Jabung Timur Jambi dan Rawa Banjiran Kampar Riau

2014 ◽  
Vol 15 (1) ◽  
pp. 1 ◽  
Author(s):  
Azrita Azrita ◽  
Hafrijal Syandri ◽  
Dahelmi Dahelmi ◽  
Syaifullah Syaifullah ◽  
Estu Nugroho
Keyword(s):  
Principal Component Analysis ◽  
Morphological Characteristics ◽  
Principal Component ◽  
Environmental Water ◽  
Component Analysis ◽  
The Body ◽  
Meristic Characters ◽  
Morphometric Characters ◽  
A Value

Overfishing, the use of unfriendly-environmental fishing gears, changes of environmental water conditions and diversity of habitats are threaten the continuity of Bujuk fish (Channa lucius) and generate the morphologycal diversity. Consequently, appropriate conservation efforts are needed to preserve the fish. The first phase of these efforts were done through morphological approach. The research was held in 2010 in Singkarak Lake West Sumatera Province, in floodplain, Pematang sub-district Lindung Mendahara Ulu Regency East Tanjung Jabung, Province of Jambi, and in floodplain Mentulik Regency Kampar Kiri Hilir Riau Province. The aims of the research were to analyze the morphological characteristic of the fish with Principal Component Analysis (PCA) and to determine the range of similarity between populations of the fish. Determination of the location of fish sampling was conducted by proposive sampling in which there were 30 samples for every research location. The measurement of the specimen was done by digital calipers on the left of the body, at 4 meristic characters and 19 morphometric characters. The data obtained were analyzed by One Way ANOVA and principal component analysis using Statistical software version 13. The results showed that based on the analysis of morphological characteristics of bujuk fish, populations that exist in Lake Singkarak were different from those of Pematang Lindung floodplain sub-district Mendahara Ulu Regency East Tanjung Jabung Jambi Province and Mentulik Regency floodplain Kampar Kiri Hilir Province Riau. The meristic difference was on the number of scales along the lateral line with a value of 0.783. While the main difference on morphometric characters were the snout length with a value of 0.848, and length of upper jaw with a value of 0.847. Thus, the study showed that the fish was isolated geographically into two groups, which were Jambi-Riau population and Singkarak Lake population.

scholarly journals Morphometric, Meristic and Conditional Factor Characterization of Redbelly Tilapia (Coptodon zillii) in Lake Komadugu, Yobe State, Nigeria

2021 ◽  
pp. 21-32
Author(s):  
Eze Felix ◽  
Eyo Victor Oscar ◽  
Abraham Oghenemarho Victory
Keyword(s):  
Stock Assessment ◽  
Morphological Characteristics ◽  
Landing Site ◽  
Good Health ◽  
Meristic Characters ◽  
Morphometric Characters ◽  
Meristic Counts ◽  
Fin Ray ◽  
Pelvic Fin

This research was carried out to study the morphological characteristics of Coptodon zillii from Lake Komadugu in Yobe State, Nigeria using morphometric measurements, meristic counts and length-weight relationship. A total of 60 specimens of Coptodon zillii were purchased from the fisher folks at landing site in Lake Komadugu, examined and analyzed for morphometric and meristic characterization. The results revealed that all the morphometric characters of C. zillii in Lake Komadugu varied whereas some meristic characters including mean number of rays on pectoral fin (8.00 ± 0.00), pelvic fin ray (5.00 ± 0.00), anal fin spine (3.00 ± 0.00), pelvic fin spine (1.00 ± 0.00) and number of lateral line (2.00 ± 0.00) were constant. A significant linear relationship was established and represented by the equation: W =0.008SL2.097 (r =0.6410 d.f. = 58) for male, W =0.001SL3.013 (r = 0.9600 d.f. = 58) for female. Mean condition factor which was not significantly different (p>0.05) showed that male C. zillii had 1.80 ± 0.27, female (1.92± 0.26) and pooled sex (1.86 ± 0.25). Findings of this study implies that C. zillii from Lake Komadugu are in good health. In conclusion, these findings are very useful in stock assessment, population dynamics, sustainable management and conservative measures of C. zillii in Lake Komadugu.

scholarly journals Research Regarding the Morphological Characteristics of Calendula Officinalis Local

2012 ◽  
Vol 69 (1) ◽  
Author(s):  
Cristina ZEPA ZEPA CORADINI ◽  
Valeriu TABÄ‚RÄ‚ ◽  
Doru PETANEC ◽  
Lavinia MICU ◽  
Irina PETRESCU ◽  
...  
Keyword(s):  
Local Population ◽  
Economic Value ◽  
Morphological Characteristics ◽  
Morphological Features ◽  
Morphological Aspect ◽  
Calendula Officinalis ◽  
Experimental Field ◽  
Wide Range ◽  
Polymorphic Species ◽  
Flowering Process

Marigolds have an important economic value which let to an increase production and cultivation being thus used in a wide range of fields. One of the basic elements regarding marigolds production is represented by anthodia with flowers and seeds determined by the blossom and the number of anthodium on the plant. The plant’s blossom is determined by the n umber of lingulate flowers from the external side of the anthodium where seeds grow. Calendula is a polymorphic species, forming during its evolution not only flowering, but also semi-flowering anthodia and simple flowers. In the experimental field of UASVM Timisoara we performed a series of research regarding the morphological features of six local population of marigold from the western part of the country. Flowers’ blooming proved to have a different evolution due to the influence manifested by the local population and also by the harvest results. This blooming phenomenon proved to highly influence the production elements. Blooming influence upon anthodia mass of seeds proved to be as similar as in case of anthodia with flowers. At the beginning of the harvest period, the anthodia mass of seeds proved to be maxim. According to the information collected during research, anthodia flowering fails to reestablish during harvest. The flowering process influences the number and the size of the seeds. Moreover, flowers blooming process may lead to the formation of homogenous seeds, not only in size, but also as regards their morphological aspect. The seeds from the flowering anthodia proved to be homogenous in comparison with other anthodia and had even better technological qualities.

scholarly journals MORPHOLOGICAL CHARACTERISTICS OF BEE POLLEN OBTAINED FROM BRASSICA NAPUS L.

2016 ◽  
Vol 18 (2) ◽  
pp. 73-78
Author(s):  
N.M. Redina ◽  
L.O. Adamchuk ◽  
N.V. Nikolaieva ◽  
J. Brindza
Keyword(s):  
Brassica Napus ◽  
Local Population ◽  
Morphological Characteristics ◽  
Morphometric Measurements ◽  
Brassica Napus L ◽  
Pollen Collection ◽  
Bee Pollen ◽  
Total Pollen ◽  
Protein Feed ◽  
Selection Of

The purpose of this work was to research the morphological characteristics of monofloral bee pollen obtained from Brassica napus L. The formulated goals were: determine the period of bee pollen receiving; implement the selection of bee pollen samples during blooming period of species; establish the monoflorality ratio of the total pollen collection; explore the morphometric indicators of bee pollen by the parameters of pollen lump, shaping level and weight. Bee pollen collection was carried out in Skvyra district of Kyiv region from local population of Apis mellifera L. families. Morphometric measurements were performed in the Institute of Biodiversity Conservation and Biosafety, Slovak University of Agriculture in Nitra. Here were determined the amount of bee pollen per one day brought by one family: from  27.04 to 03.05.16 is 50.8 ± 2.25 g; from 04.05 to 06.05.16 – 100.0 ± 3.33 g; from 07.05 to 17.05.16 – 270.7 ± 11.79 g; from 18.05 to 22.05.16 – 100.5 ± 3.028 g; from 23.05 – 25.05.16 – 39.8 ± 2.74 g. Here were defined the morphological parameters of bee pollen lump from B. napus: length is in the range from 3.40 ± 0.061 mm to 3.66 ± 0.048 mm; width is in the range from 2.88 ± 0.059 mm to 3.26 ± 0.067 mm; weight is in the range from 8.65 ± 0.317 mg to 11.31 ± 0.241 mg; shaping level of bee pollen is in the range 4.62 – 4.96 points. The total monoflorality ratio constitutes from 79.94 ± 0.619 % to 98.00 ± 0.202 %. The obtained results confirmed that the activity of bee flying depends on the blooming period and intensity of the nectar secretion, on the collection of protein feed from B. napus. Pollen lumps from Brassica napus L. bee pollen were large, dense, regular shape without splits, which specified the possibility of its use for the producing on a commercial scale.  

scholarly journals Truss network based morphometric and meristic variations among south-western populations of Macrognathus aculeatus in Bangladesh

2021 ◽  
Vol 42 (3(SI)) ◽  
pp. 887-894
Author(s):  
M. Sarower-E-Mahfuj ◽  
◽  
S.K. Das ◽  
K.N. Azad ◽  
A.K. Paul ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Discriminant Function ◽  
Network System ◽  
Meristic Characters ◽  
Morphometric Characters ◽  
Baseline Information ◽  
Macrognathus Aculeatus ◽  
Post Hoc ◽  
Separation Results ◽  
Discriminant Function Analyses

Aim: Landmark-based truss network system was applied to examine the morphometric and meristic differences among four different populaces of Macrognathus aculeatus namely; Dhakuriabeel, Jashore (DBJ); Arial Kha River, Madaripur (AKRM); Nabaganga River, Jhenaidah (NRJ); Kopotakkha River, Jashore (KRJ) in Bangladesh. Methodology: Completely 80 samples of M. aculeatus were collected (20 individuals from each population) for this study. Six meristic characters, 6 morphometric characters and 15 truss-based morphometric characters were measured for one-way analysis of variance (ANOVA) and Tukey-HSD post hoc test. Discriminant function analyses were also performed by using morphometric and truss-based morphometric characters to detect potential characters responsible for population separation. Results: Completely 80 samples of M. aculeatus were collected (20 individuals from each population) for this study. Six meristic characters, 6 morphometric characters and 15 truss-based morphometric characters were measured for one-way analysis of variance (ANOVA) and Tukey-HSD post hoc test. Discriminant function analyses were also performed by using morphometric and truss-based morphometric characters to detect potential characters responsible for population separation. Interpretation: The baseline information derived from the present study would be useful for appropriate conservation of M. aculeatus populations as well as for the researchers for further investigation.

Indigenous Women, Climate Change Impacts, and Collective Action

Hypatia ◽  
2014 ◽  
Vol 29 (3) ◽  
pp. 599-616 ◽  
Author(s):  
Kyle Powys Whyte
Keyword(s):  
Climate Change ◽  
Climate Change Adaptation ◽  
Indigenous Peoples ◽  
Environmental Changes ◽  
Climate Change Impacts ◽  
Indigenous Women ◽  
Leadership Positions ◽  
Important Species ◽  
And Shifts ◽  
Adaptation And Mitigation

Indigenous peoples must adapt to current and coming climate‐induced environmental changes like sea‐level rise, glacier retreat, and shifts in the ranges of important species. For some indigenous peoples, such changes can disrupt the continuance of the systems of responsibilities that their communities rely on self‐consciously for living lives closely connected to the earth. Within this domain of indigeneity, some indigenous women take seriously the responsibilities that they may perceive they have as members of their communities. For the indigenous women who have such outlooks, responsibilities that they assume in their communities expose them to harms stemming from climate change impacts and other environmental changes. Yet at the same time, their commitment to these responsibilities motivates them to take on leadership positions in efforts at climate change adaptation and mitigation. I show why, at least for some indigenous women, this is an important way of framing the climate change impacts that affect them. I then argue that there is an important implication in this conversation for how we understand the political responsibilities of nonindigenous parties for supporting distinctly indigenous efforts at climate change adaptation and mitigation.

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