scholarly journals Age and growth of large scale scraper (Capoeta aculeata) in the Gizehrud River, Tigris basin

2021 ◽  
pp. 53-60
Author(s):  
Yazdan Keivany ◽  
Vali Mohamadiyani
Keyword(s):  
Large Scale ◽  
Fork Length ◽  
Age And Growth ◽  
Age Group ◽  
Von Bertalanffy ◽  
Female Fish ◽  
Males And Females ◽  
Von Bertalanffy Growth Model ◽  
Relationship Of ◽  
Similar Growth

The large scale barb, Capoeta aculeata is a little known species native to Iran. Its age and growth were studied in 377 specimens collected monthly from the Gizehrud River in Lorestan Province (Tigris basin) during May 2014–May 2015. Sex ratio was 1M:2.1F. The maximum age of both female and male specimens was 6+ years. The most common age group of both male and female fish was 4+. The fork length ranged from 12.2 to 20.8 cm (17.4 ± 1.2SD) and weight from 32 to 188 g (93.6 ± 21.8SD). The estimated length-weight relationship of male specimens was W = 0.0161FL3.012, (r2 = 0.82) and that of female specimens W = 0.0248FL2.87, (r2 = 0.79). This relationship showed that growth of both Capoeta aculeata sexes was isometric. The estimated von Bertalanffy growth model for males was Lt= 20.9[1-e-0.57(t+0.2)] and for females Lt = 20.3[1-e-0.56(t-0.8)]. The growth performance index was estimated at 5.4 and 5.5 for males and females, respectively, indicating a similar growth rate for both sexes.

Age and growth of a newly described barb, Capoeta coadi (Cyprinidae), in Beheshtabad River, Tigris basin

2020 ◽  
Vol 56 ◽  
pp. 26
Author(s):  
Yazdan Keivany ◽  
Masoud Siami
Keyword(s):  
Growth Rate ◽  
Life History ◽  
Sex Ratio ◽  
Age Groups ◽  
Fork Length ◽  
Age And Growth ◽  
Von Bertalanffy ◽  
Males And Females ◽  
Endemic Fish ◽  
Von Bertalanffy Growth Model

The Coad barb, Capoeta coadi Alwan, Zareian and Esmaeili, 2016, is a newly described endemic fish in Beheshtabad River, Tigris basin of Iran and little is known about its life-history. Life history characteristics were examined in 426 specimens collected monthly from Beheshtabad River (central Iran) during May 2013 to May 2014. The sex ratio was 1M:0.7F. Based on scale and opercular readings, the maximum ages of the population were 8+ years for females and 7+ for males. The most frequent age groups were 3+ and 4+ in males and females, respectively. Size varied from 8.94 to 42.95 cm in fork length and weight between 10.3 and 1255.5 g. Length–weight relationship implied that the growth was negatively allometric for both sexes. The von Bertalanffy growth model was estimated as Lt =35.97[1‑e‑0.205( t+0.586)] and Lt = 49.31[1‑e ‑0.162( t‑0.208)] for males and females, respectively. The growth performance index was estimated as 5.58 and 5.97 for males and females, respectively, indicating a faster growth rate for females.

scholarly journals Age and growth of the deep water mud shrimp Solenocera melantho (De Man, 1907) off Visakhapatnam coast, India

2016 ◽  
Vol 63 (4) ◽  
Author(s):  
P. R. C. Ganesh ◽  
Myla. S. Chakravarty
Keyword(s):  
Growth Model ◽  
Deep Water ◽  
Growth Parameters ◽  
Age And Growth ◽  
Von Bertalanffy ◽  
Males And Females ◽  
Von Bertalanffy Growth Model ◽  
Mud Shrimp ◽  
De Man ◽  
Visakhapatnam Coast

Age and growth of the deep water mud shrimp Solenocera melantho (De Man, 1907) was estimated using von Bertalanffy growth model employing modal progression analysis, Ford-Walford method for L∞ and K and t0 by Gulland’s method as well as ELEFAN I (FiSAT II software version 1.2.2) method. The growth parameters estimated by the former method were: L∞= 107.9 mm, K = 2.61 y-1, t0 = 0.1344, φ’ = 4.4825 for males and L∞ = 116.4 mm, K = 3.69 y-1, t0 = 0.1346, φ’ = 4.6997 for females and by the latter method were : L∞ = 106.1 mm, K = 2.17 y-1, t0 = -0.05, φ’ = 4.3879 for males and L∞ = 116.8 mm, K = 2.1 y-1, t0 = -0.05, φ’ = 4.4571 for females. The longevity estimated for both males and females of S. melantho was about 36 months. The females were observed to grow faster than the males.

scholarly journals Age and growth of franciscana dolphins, Pontoporia blainvillei (Cetacea: Pontoporiidae) incidentally caught off southern Brazil and northern Argentina

2010 ◽  
Vol 90 (8) ◽  
pp. 1493-1500 ◽  
Author(s):  
Silvina Botta ◽  
Eduardo R. Secchi ◽  
Mônica M.C. Muelbert ◽  
Daniel Danilewicz ◽  
Maria Fernanda Negri ◽  
...  
Keyword(s):  
Growth Models ◽  
Growth Curves ◽  
Small Sample ◽  
Age And Growth ◽  
Buenos Aires Province ◽  
Von Bertalanffy ◽  
Southern Brazil ◽  
Data Set ◽  
Males And Females ◽  
Pontoporia Blainvillei

Age and length data of 291 franciscana dolphins (Pontoporia blainvillei) incidentally captured on the coast of Rio Grande do Sul State (RS), southern Brazil, were used to fit growth curves using Gompertz and Von Bertalanffy growth models. A small sample of franciscanas (N = 35) from Buenos Aires Province (BA), Argentina, were used to see if there are apparent growth differences between the populations. Male and female franciscana samples from both areas were primarily (78–85%) <4 years of age. The Von Bertalanffy growth model with a data set that excluded animals <1 year of age provided the best fit to data. Based on this model, dolphins from the RS population reached asymptotic length at 136.0 cm and 158.4 cm, for males and females, respectively. No remarkable differences were observed in the growth trajectories of males and females between the RS and BA populations.

scholarly journals Observations on the age and growth of Varicorhinus damascinus (Val.) in Tigris river at Salahuldin province – Iraq

2008 ◽  
Vol 5 (2) ◽  
pp. 243-248
Author(s):  
Baghdad Science Journal
Keyword(s):  
Regression Coefficient ◽  
Age Groups ◽  
Age And Growth ◽  
Gill Nets ◽  
The Third ◽  
Weight Relationship ◽  
Tigris River ◽  
Straight Line ◽  
Males And Females ◽  
Relationship Of

Age and growth of Varicorhinus damascinus (Val.) in Tigris river at Salahuldin province have been investigated. Monthly samples were taken during the period from September 1999 to August 2000, using small-meshed gill nets. The age data showed that there were six age groups and the dominant age groups were (III – IV) for both sexes. The results of the present study revealed that the increment in length of V. damascinus at the sites of study showed a tendency to decrease with the increase in age, after the third year of life in both sexes. The length-weight relationship of males and females were calculated and demonstrated in a straight line logarithmic formula, as follows: Log W = 1.5404 + 2.6885 log L for males r = 0.95 (P > 0.05) Log W = 1.6723 + 2.7877 log L for females r = 0.77 (P > 0.05) The values of the regression coefficient (b) indicated that the growth of both sexes of V. damascinus was allometric..

scholarly journals Length-weight relationship and condition factor of endemic fish Bilih (Mystacoleucus padangensis Blkr.) in Lake Singkarak, West Sumatra, Indonesia

2021 ◽  
Vol 322 ◽  
pp. 01036
Author(s):  
Syahroma H. Nasution ◽  
Ira Akhdiana ◽  
M. Suhaemi Syawal ◽  
Agus Nurhidyat
Keyword(s):  
Condition Factor ◽  
Economic Value ◽  
Normal Range ◽  
Female Fish ◽  
High Demand ◽  
Male And Female ◽  
Weight Relationship ◽  
West Sumatra ◽  
Males And Females ◽  
Relationship Of

Bilih (Mystacoleucus padangensis) is an endemic species of Lake Singkarak and has important economic value. Overfishing of Bilih fish using non-selective fishing gear has led to a decline in its population. High demand, resulting in decreased production and size of Bilih fish. This research aims to determine this endemic fish's length-weight relationship and condition factor as basic data to the effort conservation. The fish was captured with experimental gillnet mesh sized 5/8, ¾, and 1 inch in Sumani, Batu Taba, Paninggahan, and PLTA intake stations. The total length and the weight of Bilih fish ranged from 40 – 95 mm and 10 – 74 mg, respectively. The highest length and weight of Bilih were 80.3 mm, and 45.0 mg were found at the Sumani station. The growth pattern of male and female fish was a negative allometric characteristic. The length-weight relationship of male and female fish was W = 0.00137 L2.368 and W = 0.00179 L2.312, respectively. Condition factors of males and females are 1.02 and 1.004, respectively. The result of condition factor value for males is higher than the female. The water quality values are within the normal range that supports fish life.

scholarly journals Study of blood pressure in relation with age, sex and BMI in school going children of age group 5-15 years in Amalapuram, Andhra Pradesh, India

2019 ◽  
Vol 6 (3) ◽  
pp. 1068
Author(s):  
Rajesh Kumar Sethi ◽  
Raghava Badabagni ◽  
Padmaja Sridevi Pabbineedi ◽  
Radhika Chennupati
Keyword(s):  
Blood Pressure ◽  
Peer Group ◽  
The Body ◽  
Age Group ◽  
Cross Sectional ◽  
History Of ◽  
Family History Of Hypertension ◽  
Males And Females ◽  
Group 5 ◽  
Relationship Of

Background: The measurement of blood pressure is an important component of routine Pediatric physical examination. Children with higher levels of blood pressure tend to maintain higher blood pressure levels in adulthood in comparison to their peer group. The aims and objectives of this study were to define the normal pattern of blood pressure and prevalence of hypertension in urban school children between the age group of 5-15 years and to evaluate relationship of blood pressure with variables such as age, sex, height, weight and BMI in Amalapuram, Andhra Pradesh.Methods: This was a prospective cross-sectional observational study conducted from July 2016 to December 2018 in Department of Pediatrics, KIMS Amalapuram.Results: The overall prevalence of hypertension in the present study was 3.2%. Of these 16 children 11 were males amounting to 4.41% of total number of males and 5 were females amounting to 1.99% of total number of females. The prevalence of hypertension was more in the males. It was observed that there is not much increase in mean blood pressure up to 130 cms (both in males and females) and increased significantly and gradually in children above 130 cms of height. Blood pressure increases gradually and in a proportionate manner with increase in weight and BMI.Conclusions: Blood pressure is an important vital sign which reflects the integrity of the cardiovascular system, renal, endocrinal system and other systems in the body. Blood pressure of an individual varies with age, sex, height, weight and BMI. It also has a strong correlation with family history of hypertension. Thus, concluded that hypertension has its roots in childhood and early adolescence.

scholarly journals Age and growth of the dog snapper Lutjanus jocu (Bloch & Schneider, 1801) in Abrolhos Bank, Northeastern Brazil

2011 ◽  
Vol 9 (2) ◽  
pp. 393-401 ◽  
Author(s):  
Marília Previero ◽  
Carolina V. Minte-Vera ◽  
Matheus Oliveira Freitas ◽  
Rodrigo Leão de Moura ◽  
Claudenice Dei Tos
Keyword(s):  
Growth Parameters ◽  
Growth Models ◽  
Fork Length ◽  
Age And Growth ◽  
Northeastern Brazil ◽  
Constant Variance ◽  
Males And Females ◽  
Average Size ◽  
Constant Coefficient Of Variation ◽  
Estuarine Region

We determined the age and growth of the dog snapper (Lutjanus jocu), caught in the region of Abrolhos Bank, Bahia State, by the fishermen from coastal communities of Prado, Alcobaça, Caravelas, and Nova Viçosa. We examined 205 sectioned otoliths of fish caught by harpoon, longline, hand line, and gill nets (14.5 to 79.5 cm fork length). The formation of each ring was considered annual. The sectioned otoliths showed between 0 and 29 rings. Nearly half of the analyzed specimens had between 0 and 7 rings (88 of 205). Fish caught with nets in the estuarine region were the juvenile, while fish caught with lines and harpoons were the oldest. Two von Bertalanffy growth models were fitted to length-at-age data: one assuming constant variance of length-at-age (SVB) and another assuming constant coefficient of variation, i.e. variance increasing as a function of average size (CVVB). The SVB estimates were Loo = 87.82 cm, K = 0.10, and t0 = -1.486 and the CVVB estimates were Loo = 117.60 cm, K = 0.06, and t0 = -2.470. The largest Loo values estimated by the CVVB model are supported by reports from the literature of larger animals occurring in the deeper outer shelf of Abrolhos Bank. Growth parameters were also estimated for males and females separately (SVB model) (Loo = 92.80 cm, K = 0.099, and t0 = -1.680 for males, and Loo = 82.10 cm, K = 0.105, and t0 = -1.570 for females).

Age group and gender-wise comparison of obesity indices in subjects of Varanasi

2020 ◽  
Vol 64 ◽  
pp. 109-117
Author(s):  
Kumar Sarvottam ◽  
Prabhat Ranjan ◽  
Umashree Yadav
Keyword(s):  
Body Fat ◽  
Central Obesity ◽  
Age Groups ◽  
Age Group ◽  
Specific Distribution ◽  
Males And Females ◽  
And Gender ◽  
Obesity Indices ◽  
Relationship Of ◽  
The Relationship

Objectives: Deposition of body fat may differ in different age groups and gender-wise differences are also likely. The present study aims to evaluate age- and gender-wise differences in obesity parameters in healthy subjects of both genders of Varanasi. Materials and Methods: Anthropometric measurements were performed in 346 subjects reported in health check-up camp. Parameters were compared between each age group for males and females separately as well as gender-wise comparison for each age group was also performed. Regression analysis was performed to observe the relationship of age with obesity parameters and body mass index (BMI) with other parameters of obesity. Results: Both males and females had central obesity with males having higher waist circumference (WC) than females (P = 0.002) while females had higher body fat (fat %) (P = 0.000). Obesity indices of males of age group of 18–29 years were lesser as compared to other age groups. Obesity indices of female subjects were comparable in 18–39 years of age. Age group of 30–39 and 50–59 years males had higher WC than females (P = 0.002, 0.016, respectively) while fat % of females in each age group were significantly higher than males of corresponding age groups. Positive correlation of age with obesity parameters and BMI with WC and fat % was observed. Conclusion: Gender-wise differences in BMI, WC, WHtR and fat % tend to increase with age, indicative of increase in adiposity and central obesity with progressing age. Males in general have higher WC than females but lesser fat %. Gender differences in obesity may show age group specific variations. Findings of the study may be useful for identifying age specific distribution of obesity indices in males and females.

scholarly journals Age and growth of the queen triggerfish Balistes vetula (tetraodontiformes, balistidae) of the central coast of Brazil

2011 ◽  
Vol 59 (3) ◽  
pp. 231-239 ◽  
Author(s):  
Albuquerque Cristiano Queiroz de ◽  
Agnaldo Silva Martins ◽  
Nilamon de Oliveira Leite Junior ◽  
Julio Neves de Araújo ◽  
Alan Marques Ribeiro
Keyword(s):  
Fork Length ◽  
Fish Growth ◽  
Age And Growth ◽  
Von Bertalanffy ◽  
Central Coast ◽  
Brazil Current ◽  
Growth Bands ◽  
Marginal Increment ◽  
Oligotrophic Water ◽  
Maximum Proportion

Dorsal spines (n=649) of the queen triggerfish Balistes vetula were collected between 1997 to 1999 at the central coast of Brazil and used to evaluate fish growth. The marginal increment analysis validated that 1 increment was formed annually (n=476), with minimum values observed at the summer, and coinciding with the maximum proportion of translucent growth bands. Fish's maximum fork length and age were 460 mm and 14 years respectively. The parameters of the von Bertalanffy function were: Fl∞ = 441.3 mm, K = 0.14 and T0= -1.8. Weight gain by year ranged from about 110 g yr-1 for age 5 to about 30 g yr-1 for age 14. Compared to other studies, B. vetula growth in the Central coast of Brazil was slow, which could be related to the influence of the oligotrophic water from Brazil current. Our results indicate that B. vetula's fisheries in the Central coast of Brazil until 1999 have caught mostly adult individuals over the sexual maturation lenght, 60% of them with ages from 6 to 8 yr.

scholarly journals Short Communication: Age and growth of elongated mudskipper, Pseudapocryptes elongatus (Cuvier, 1816) from Sundarbans, India

2018 ◽  
Vol 20 (1) ◽  
pp. 85-90 ◽  
Author(s):  
GOPALAN MAHADEVAN ◽  
PALANIVEL BHARATHIRAJAN ◽  
VELAYUTHAM RAVI ◽  
MOJTABA POULADI ◽  
MARYAM MIRZAEI VAND KHANGHAH
Keyword(s):  
Short Communication ◽  
Growth Parameters ◽  
Mathematical Expression ◽  
Fish Growth ◽  
Age And Growth ◽  
Von Bertalanffy ◽  
Frequency Data ◽  
Length Frequency ◽  
Males And Females ◽  
Length Frequency Data

Mahadevan G, Bharathirajan P, Ravi V, Pouladi M, Mirzaei Vand Khanghah M. 2019. Short Communication: Age and growth of elongated mudskipper, Pseudapocryptes elongatus (Cuvier, 1816) from Sundarbans, India. Biodiversitas 20: 85-90. The estimation of age and mathematical expression of fish growth is complex and debated subject in fishery sciences. Growth parameters of elongated mudskipper, Pseudapocryptes elongatus were estimated based on the length frequency data using FiSAT II software (several tools such as Powell-Wetherall method, ELEFAN and von Bertalanffy growth estimates). Samples were collected from Sundarbans mangroves using gill and cast nets and by hand picking. The length-frequency (LFQ) of P.elongatus was recorded from January 2014 to December 2015 and the above tools estimated the growth parameters (L∞, K and t0) from the progression of LFQ modes through time. L∞ and K values of males were 220.50 mm and 1.3 yr-1, respectively and similarly, L∞ and K values of females were 221.05 mm and 1.21 yr-1, respectively. The t0 values estimated for males and females were-0.1915 years and-0.1661 years, respectively. The estimated growth performance index (Φ) values for males and females of P. elongatus were 4.394 and 4.503, respectively. The lifespan of both the sexes was found to be 4+ years.

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