scholarly journals Biometric studies of Ailia coila (Hamilton, 1822) from river Brahmaputra, Assam, India

2019 ◽  
Vol 66 (3) ◽  
Author(s):  
Pranab Sogoi ◽  
S.K. Chakraborty ◽  
B.K. Bhattacharjya ◽  
S.K. Sharma ◽  
M. Ramteke

For the study of length-weight relationship, morphometric and meristic characters, a total of 711 specimens (196 male and 515 female) of the Gangetic ailia, Ailia coila (Hamilton, 1822) were collected from Uzanbazar and Dhubri landing centres of river Brahmaputra, Assam during September 2013 to April 2014. The length and weight of males ranged from 66 to 154 mm and 1.218 to 20.5309 grespectively and that of females ranged from 66 to 161 mm and 1.4344 to18.2907 g respectively. The length-weight relationship was established as W = 0.002773 L 3.189306 and W = 0.005794 2.86234 for male and female, respectively. The analysis of covariance showed significant difference in ‘b’ values between sexes and student ‘t’ test indicated positive allometric growth for male and isometric growth for female. The morphometric characters were compared; showed maximum co-efficient of correlation (r) in standard and pre-dorsal length (0.98) while lowest was observed in mandibular barbel length (0.69) against the total length. Based on the study of meristic traits, the fin formula can be written as B6, P12-15, V5-6, C14-18, A61-75, GR17-24. The minor variations in meristic and morphometric characters could be attributed to genetic components and difference in geographical and environmental parameters like temperature and food availability. The study will helpful in identification of stock and stock-specific management strategies of this species in river Brahmaputra, Assam.

2021 ◽  
Vol 14 (4) ◽  
pp. 1737-1745
Author(s):  
Monalisa Malik Mukherjee

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.


2021 ◽  
Vol 42 (4) ◽  
pp. 1026-1032
Author(s):  
N.K. Suyani ◽  
◽  
R. Mridula ◽  
K.M. Rajesh ◽  
M.M. Meshram ◽  
...  

Aim: The study aimed to investigate the morphometric and meristic measurements, length-weight relationship and relative condition factor of Odonus niger landed along coastal Karnataka. Methodology: The morphometric and meristic measurements, length-weight relationship and relative condition factor (Kn) of O. niger was studied for a period of eight months from August 2019 to March 2020. The different morphometric characters were subjected to statistical analysis. The length-weight relationship was analyzed for both the sexes (female and male) and combined data. Monthly relative condition factor was analyzed for both the sexes and for different size group. Results: A comparison of different morphometric measurements exhibited good extent of correlation indicating good extent of interdependence of these characters. Four out of eight morphometric characters are environmentally controlled and suggested wide range of zoogeographical distribution of O. niger. The length-weight relationship is indicated as W = 0.046 L2.565, W = 0.044 L2.589 and W = 0.047 L2.561 with coefficient of determination (r2) of 0.910, 0.913 and 0.910 for male, female and combined sexes, respectively. The 'b' values of both the sexes (male and female) exhibited negative allometric growth (p<0.05) and appeared to be leaner. There was no significant (p<0.05) variation for relative condition factor (Kn) among the months and size groups. However, little higher values were observed during November and February. Interpretation: The study fills the knowledge gap and support for developing a suitable management system for this fish species.


2018 ◽  
Vol 65 (1) ◽  
Author(s):  
Divya Viswambharan ◽  
Pratibha Rohit ◽  
K. K. Joshi ◽  
Sujitha Thomas ◽  
Latha Shenoy ◽  
...  

The present study aimed to elucidate the length-weight relationship and growth parameters of the moonfish Mene maculata (Bloch and Schneider, 1801) along the Karnataka Coast. The species showed positive allometric growth with pooled ‘b’ value of 3.390 which is significantly greater than 3 (p<0.05) level. The “b” values of males (3.316) and females (3.440) showed significant difference from that of the indeterminates (2.90). The annual growth parameters estimated for moonfish off Karnataka Coast were: L∞ = 29.1 cm and K = 1.014 yr-1.


2021 ◽  
Vol 51 (1) ◽  
pp. 85-94
Author(s):  
Habib Bal ◽  
Telat Yanik ◽  
Dilek Türker

The population structure of the bluefish, Pomatomus saltatrix (Linnaeus, 1766), in Turkish waters is scarcely described in the literature. To identify any distinct population units of bluefish, and reaffirm the findings of a previous study, four areas were selected: the Aegean Sea, western Black Sea, eastern Black Sea, and the Sea of Marmara. In this study, truss network morphometrics, meristics, and otolith shape analyses were successfully applied for different population identification of the bluefish. Multivariate analysis of variance (MANOVA) revealed no differences for truss network morphometrics, meristic, and otolith shape characters between males and females. Hence, both sexes were combined for the discriminant function (DFA) and the Principal Component Analysis (PCA). Using univariate ANOVA based on the stepwise method revealed a highly significant difference among different locations for each truss-morphometrics and otolith shape characters. Furthermore, six out of seven meristic characters also showed significant differences between different areas. Based on PCA, 25 out of 27 truss-morphometric characters had a loading value above 0.70, which was considered significant in this study. The results of DFA show clear patterns of truss-morphometric character variations, forming four distinct clusters that were well separated from each other, indicating the existence of four morphologically differentiated populations of the bluefish. The proportion of the correctly classified Aegean Sea, western Black Sea, and eastern Black Sea bluefish samples to their original groups were 100%, demonstrating clear separation of these stocks from each other. Whereas up to 5% of the total samples of the Sea of Marmara were incorrectly classified, assigning to the eastern Black Sea. These findings were supported by meristic and otolith shape characters that also indicated four morphologically differentiated populations of the bluefish. However, their overall proportion of correct classification was relatively lower than the truss-morphometric traits method. The findings suggest the requirement of strategic assessment and management of each bluefish stock separately to use them sustainably in the future.


Author(s):  
Tasaduq H. Shah ◽  
Sauliheen Qadri ◽  
M. H. Balkhi ◽  
Bilal A. Bhat ◽  
F. A. Bhat ◽  
...  

Schizothorax curvifrons, an indigenous cyprinid fish of Kashmir, forms an important coldwater fishery resource of the valley. This study was aimed to describe the morphometrics and length-weight relationship of S. curvifrons in River Jhelum Kashmir. The various morphometric characters showed high co-efficient of correlation (r) values, indicating that the characters were highly correlated to each other. The length-weight relationship was established logarithmically as Log W = -3.9323 + 2.5863 Log L (r2=0.746) for males, Log W = -4.1708 + 2.6852 (r2=0.745) Log L for females and Log W = -3.9975 + 2.6138 Log L (r2=0.746) for pooled data. The b value (2.6138) was found to be significantly different from 3 indicating negative allometric growth.


2020 ◽  
Vol 20 (2) ◽  
pp. 189
Author(s):  
Muhammad Nur ◽  
M.Fadjar Rahardjo ◽  
Charles P.H. Simanjuntak ◽  
Djumanto Djumanto ◽  
Krismono Krismono

Pirik (Lagusia micracanthus Bleeker, 1860) is one of endemic fishes in Sulawesi. Morphometric and meristic information of Pirik population in various habitats are unknown. The present study aimed to determine the morphometric and meristic variation of Pirik in Maros and Wallanae Cenrana watersheds. Sampling collection was carried out monthly from May 2018 to April 2019 in the Maros watershed, namely Pattunuang River (M1), Bantimurung River (M2), Pucak River (M3); and in Wallanae Cenrana watershed particularly in Camba River (W1), Sanrego River (W2), and Ompo River (W3). Morphometric measurements consisted of 31 characters and meristic measurements consisted of 10 characters. Morphometric data was standardized by dividing all morphometric characters by standard length (SL). Analysis of variance (ANOVA) and discriminant analysis (Discriminant Function Analysis) were applied for data analysis. The results showed that the Pirik taken from rivers in the Maros and Wallanae Cenrana watershed are two different population groups. There are 12 distinguishing morphometric features for Pirik of the Maros and Wallanae Cenrana watershed, i.e. TL (total length), SL (standard length), BDdSA (body depth-dorsal fin origin), HL (head length), Jlup (upper-jaw length), PAfL (pre-anal fin length), ABL (Anal fin base length), PelRL (pelvic ray length), AFRL (anal fin ray length), CPL (caudal peduncle length), CLLup (upper caudal lobe length) and CLLmid (mid-caudal length). There is no significant difference of meristic characters of Pirik obtained from the Maros and Wallanae Cenraa watersheds.


2014 ◽  
Vol 2 (2) ◽  
pp. 29
Author(s):  
Adi Noman Susanto ◽  
Lawrence J.L Lumingas

Title (Bahasa Indonesia): Pendugaan pertama matang kelamin dan pertumbuhan alometri ikan cakalang, Katsuwonus pelamis (Linnaeus, 1758), yang didaratkan di Pulau Ternate Skipjack tuna, Katsuwonus pelamis (Linnaeus, 1758), is a very important species for Indonesian fisheries.  A total of 462 specimens (254 males and 208 females) collected from fish landings in Ternate Island from November 2013 to April 2014 were used to estimate length at first sexual maturity, length-weight relationship, and length-head circumference relationship. The length at first sexual maturity (FL50) was 489.68 mm. The length-weight relationship equations were  W = 0.0001*FL2.7232 for males and W = 0.0002*FL2.6595 for females, respectively. Student’s t-test indicated significant deviation of ‘b’ from ‘3’ towards negative allometric growth (p< 0.05).  The length-head circumference relationship equations were HC = 0.5453*FL1.0263for males and HC = 0.6519*FL0.9985for females, respectively. Student’s t-test indicated no significant deviation of ‘b’ from ‘1’ towards isometric growth (p> 0.05).  Analysis of covariance showed that there was no significant difference between sexes (p> 0.05) for both relationships. Hence, a common length-weight relationship and a common length-head circumference relationship can be derived using pooled data of both sexes. Ikan cakalang, Katsuwonus pelamis (Linnaeus, 1758) merupakan  spesies yang sangat penting untuk perikanan Indonesia.  Sejumlah 462 spesimen (254 jantan dan 208 betina) ikan cakalang yang diperoleh dari ikan yang didaratkan di Pulau Ternate, selama periode November 2013 sampai April 2014 telah digunakan untuk menduga panjang matang kelamin pertama, hubungan panjang-berat, dan hubungan panjang-keliling lingkar kepala. Panjang pada saat matang kelamin pertama (PC50) adalah  489,68 mm. Persamaan hubungan panjang-berat diperoleh BT = 0,0001*PC2,7232 untuk jantan dan BT = 0,0002*PC2,6595 untuk betina. Hasil uji-t Student menunjukkan penyimpangan yang nyata ‘b’ dari ‘3’ cenderung ke arah pertumbuhan alometrik negatif (p < 0,05).   Persamaan hubungan panjang-keliling lingkar kepala diperoleh LK = 0,5453*PC1,0263 untuk jantan dan LK = 0,6519*PC0,9985 untuk betina. Hasil uji-t Student menunjukkan deviasi yang tidak nyata nilai ‘b’ dari ‘1’ yang cenderung ke arah pertumbuhan isometrik (p > 0,05).   Analisis kovarians menunjukkan bahwa tidak terdapat perbedaan yang nyata antara jantan dan betina (p > 0,05) untuk kedua hubungan tersebut di atas. Oleh karena itu, suatu hubungan panjang-berat umum dan suatu hubungan panjang-lingkar kepala umum dapat dibuat dengan menggunakan data gabungan kedua jenis kelamin.


2020 ◽  
Vol 30 ◽  
pp. 1-7
Author(s):  
Raúl José Tapia Varela ◽  
Deivis Samuel Palacios Salgado ◽  
Carlos Alberto Romero-Bañuelos ◽  
Salvador Ruiz Bernés ◽  
Roberto Padilla-Noriega ◽  
...  

This study poses two objectives: to determine whether the growth of females and males of the C. viridis is isometric, and whether the commercial fishing changes the condition of snook. The information regarding the length-weight relationship (LWR) is basic for the development of management strategies and conservation of the white snook. The length-weight relationship condition analysis is presented for the snook C. viridis fishery in the north coast of Nayarit. A non-experimental, longitudinal aleatory study was performed. Data was obtained during a six-year period (2010-2015). The weight, total length and sex of 2542 organisms were recorded. The LWR of males from 2010 to 2015 indicated negative allometric growth (p < 0.05), while the females indicated positive allometric growth (p < 0.05). However, the overall analysis LWR for males and females in the whole sampling period (2010-2015) showed negative allometric: b = 2.958 (p < 0.05) and r2 = 0.948. Regarding the analysis of condition, results indicated a value of Kn ≥ 1 in males; females presented a condition lower than 1, which indicated sex-change from male to female. In response to the fishing pressure, the C. viridis has readjusted year after year the minimum size of sex switching, generating slight variations of Kn in females of the C. viridis in the studied area.


2021 ◽  
pp. 1-8
Author(s):  
Emily Kell ◽  
John A. Hammond ◽  
Sophie Andrews ◽  
Christina Germeni ◽  
Helen Hingston ◽  
...  

OBJECTIVES: Shoulder pain is a common musculoskeletal disorder, which carries a high cost to healthcare systems. Exercise is a common conservative management strategy for a range of shoulder conditions and can reduce shoulder pain and improve function. Exercise classes that integrate education and self-management strategies have been shown to be cost-effective, offer psycho-social benefits and promote self-efficacy. This study aimed to examine the effectiveness of an 8-week educational and exercise-based shoulder rehabilitation programme following the introduction of evidence-based modifications. METHODS: A retrospective evaluation of a shoulder rehabilitation programme at X Trust was conducted, comparing existing anonymised Shoulder Pain and Disability Index (SPADI) and Patient-Specific Functional Scale (PSFS) scores from two cohorts of class participants from 2017-18 and 2018-19 that were previously collected by the physiotherapy team. Data from the two cohorts were analysed separately, and in comparison, to assess class efficacy. Descriptive data were also analysed from a patient satisfaction survey from the 2018-19 cohort. RESULTS: A total of 47 patients completed the 8-week shoulder rehabilitation programme during the period of data collection (2018-2019). The 2018-19 cohort showed significant improvements in SPADI (p 0.001) and PSFS scores (p 0.001). No significant difference was found between the improvements seen in the 2017-18 cohort and the 2018-19 cohort. 96% of the 31 respondents who completed the patient satisfaction survey felt the class helped to achieve their goals. CONCLUSION: A group-based shoulder rehabilitation class, which included loaded exercises and patient education, led to improvements in pain, disability and function for patients with rotator cuff related shoulder pain (RCRSP) in this outpatient setting, but anticipated additional benefits based on evidence were not observed.


2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 185-185
Author(s):  
Rachel McPherson ◽  
Barbara Resnick ◽  
Elizabeth Galik

Abstract Communication and interactions are an integral part of care in long-term care settings. Resident variables, such as race and gender, shape communication and interaction between staff and residents. The Quality of Interactions Schedule (QuIS) was developed to measure the quality of verbal and nonverbal interactions among nursing staff and older adults initially for those in acute care and later used as well in a variety of long term care settings. A quantified measurement of the quality of interactions between residents and staff was created to quantify the QuIS. The purpose of this study was to describe the gender and racial differences in scored quality of interactions. Data for the present study was based on baseline data from the Evidence Integration Triangle for Behavioral and Psychological Symptoms of Dementia (EIT-4-BPSD) implementation study. A total of 535 residents from 55 settings were included in the analyses. An analysis of covariance was conducted to determine a difference in QuIS scores between males and females while controlling for age. The second model tested for differences in QuIS scores between blacks and whites while controlling for age and gender. There was not a statistically significant difference in QuIS scores between male and female residents. There was a significant difference in QuIS scores between those who were black versus white, such that those who were black received more positive interactions from staff than those who were white. Future work should focus on a deeper examination of resident factors and staff factors that may influence these interactions.


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