Allometry and Condition factor of Whipfin Silverbiddy, Gerres filamentosus from Mangalore Coast, Karnataka, India

2020 ◽  
Author(s):  
N. Narasimhaiah ◽  
K.P. Rajashekar ◽  
S.M. Shivaprakash ◽  
S. Yambem Tenjing
Keyword(s):  
Mass Culture ◽  
Fishery Management ◽  
Condition Factor ◽  
Feeding Intensity ◽  
South West ◽  
Equation Analysis ◽  
Significant Difference ◽  
South West Coast ◽  
Sustainable Fishery ◽  
Weight Data

Background: Gerrids under family Gerridae are important in contributing rich source of protein. Gerres species are economically important food in India. They take a good role in development and economic of Indian estuaries. In fish biology, knowledge of the length-weight data and condition factor (Kn) is an important tool. Gerres filamentosus is one of the economically important groups of fishes inhabiting Karnataka coast. It was selected as a candidate for the present study since the knowledge on length-weight data and condition factor will be helpful in mass culture and production of this species in Karnataka.Methods: The length-weight relationships and condition factor of 2020 specimens of fish, G. filamentosus from Mangalore, Karnataka, south west coast of India, were studied from July 2009 to June 2011. The length-weight relationship was found using parabolic equation. Analysis of co-variance was used to test the significant difference in estimates of “b” between sexes. The condition factor for individual fish was calculated using the formula Kn = Wo/Wc.Result: The relation between the total length (L) and total weight (TW) was described as LogTW = -1.7716 + 2.9511 Log L for females, Log TW = -1.7526 + 2.9364 LogL for males and LogTW = -1.8343 + 2.9720 LogL for indeterminate fishes. The highest and lowest condition factor (Kn) values in females was in December 2010 (1.1186) and September 2010 (0.8871), respectively. Similarly, the highest and lowest Kn values in male was in March 2011 (1.0630) and September 2010 (0.6977), respectively. The result of length-weight relationships could be used for fishery to approve appropriate regulations for sustainable fishery management. The present findings could also be useful for ecosystem modeling. In the present study, changes in Kn value may be in relation to some other reasons than reproductive cycle and feeding intensity.

scholarly journals Comparative efficiency of fish trap with different funnel designs

2017 ◽  
Vol 64 (4) ◽  
Author(s):  
D. Arunjenish ◽  
N. Neethiselvan ◽  
B. Sundaramoorthy ◽  
P. Jawahar ◽  
T. Ravikumar
Keyword(s):  
West Coast ◽  
Tamil Nadu ◽  
The Other ◽  
Fishing Ground ◽  
West Coast Of India ◽  
Fish Trap ◽  
Comparative Efficiency ◽  
South West ◽  
Significant Difference ◽  
South West Coast

The efficiency of four different funnel designs viz., rectangular, oval, heart-in and circular shaped funnels were tested in a serial collapsible fish trap through fishing trials conducted in a coastal fishing ground off Mandapam in Tamil Nadu, south-west coast of India. A total of 24 fishing operations were carried out. Significant difference in overall catch rate of experimental trap with respect to funnel designs could be observed (p<0.05). Among four types of funnels tested with the constant rear end funnel perimeter of 560 mm, traps with oval funnel caught more number of fishes (121 nos. in 24 soaking days) than those fitted with rectangular, heart-in shaped and circular type of funnels with 37; 82 and 70 nos. in 24 soaking days respectively. The study revealed that oval shaped funnel was superior to the other funnel designs with 560 mm circumference.

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 Reproductive biology of the commercially important Indian squid Uroteuthis (Photololigo) duvaucelii (d’ Orbigny [in Ferussac & d’ Orbigny], 1835) off Mangalore, south-west coast of India

2017 ◽  
Vol 64 (1) ◽  
pp. 75
Author(s):  
N. Rajendra Naik ◽  
S. M. Shivaprakash ◽  
H. N. Anjaneyappa ◽  
S. R. Somasekhara ◽  
Jaya Naik ◽  
...  
Keyword(s):  
West Coast ◽  
Female Ratio ◽  
West Coast Of India ◽  
Size Dependent ◽  
South West ◽  
Significant Difference ◽  
South West Coast ◽  
Commercially Important ◽  
First Maturity ◽  
Male To Female

Uroteuthis (Photololigo) duvaucelii is one of the commercially important inshore squid resources off the south-west coast of India. Length-weight relationship for this species indicated no significant difference between the sexes and hence, the relationship for both the sexes was represented with the common equation W = 0.4624 L2.1158. U. (P.) duvaucelii spawned throughout the year with peak spawning in May. Absolute fecundity ranged from 1,545 to 13,585 eggs with an average of 7,554 eggs. Size at first maturity indicated that females matured earlier at 70 mm DML (dorsal mantle length) whereas males matured little later at 90 mm DML. Males were observed to be dominant during most of the study period with overall male to female ratio of 1:0.93. Seasonal and size dependent variations in sex ratio were distinct.

Length-weight relationship and condition factor as an indicator of growth and feeding intensity of Sea bream (Sparus aurata L, 1758) given feed with different protein contents

2018 ◽  
Author(s):  
Ysun Kop Ali Yýldýrým Korkut ◽  
Sule Gurkan
Keyword(s):  
Crude Protein ◽  
Condition Factor ◽  
Sparus Aurata ◽  
Protein A ◽  
Mean Value ◽  
Sea Bream ◽  
Feeding Intensity ◽  
Crude Lipid ◽  
Weight Relationship ◽  
Significant Difference

The aim of this study is to investigate the relationship between the length-weight and the condition factor of gilthead sea bream (Sparus aurata L.,1758) fed with three types of feed with different levels of crude protein (A: 38% Crude Protein (CP) and 18% Crude Lipid (CL); B: 42% CP and 18% CL; and C: 45% CP and 18% CL). The length-weight relationship of the fish in groups A, B and C was determined as W=0.051*TL2.63, W=0.046*TL2.67 and W=0.046*TL 2.68 respectively and there was no statistically significant difference between the groups (p>0.05). There was negative allometric growth in all experimental groups. The lowest mean value in the groups according to Fulton’s condition factor (CF) was found in group B (1.66±0.17), and the highest mean value was found in group C (1.71±0.18). It was determined that there was no statistically significant difference between the groups (p>0.05).

Survey of feral honey bee (Apis mellifera) colonies for Nosema apis in Western Australia

2007 ◽  
Vol 47 (7) ◽  
pp. 883 ◽  
Author(s):  
Rob Manning ◽  
Kate Lancaster ◽  
April Rutkay ◽  
Linda Eaton
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Western Australia ◽  
Honey Bees ◽  
Nosema Apis ◽  
The South ◽  
South West ◽  
Feral Populations ◽  
Significant Difference

The parasite, Nosema apis, was found to be widespread among feral populations of honey bees (Apis mellifera) in the south-west of Western Australia. The location, month of collection and whether the feral colony was enclosed in an object or exposed to the environment, all affected the presence and severity of infection. There was no significant difference in the probability of infection between managed and feral bees. However, when infected by N. apis, managed bees appeared to have a greater severity of the infection.

Meteorological aspects of mud bank formation along south west coast of India

2013 ◽  
Vol 65 ◽  
pp. 45-51 ◽  
Author(s):  
Asha S. Philip ◽  
C.A. Babu ◽  
P.V. Hareeshkumar
Keyword(s):  
West Coast ◽  
West Coast Of India ◽  
South West ◽  
South West Coast ◽  
Mud Bank

scholarly journals Preliminary Evidence of Children’s Weight Gain From 5 Months of Home Quarantine During the COVID-19 Pandemic

2021 ◽  
pp. 155982762110066
Author(s):  
Keith Brazendale ◽  
Jeanette Garcia ◽  
Ethan T. Hunt ◽  
Michael Blankenship ◽  
Daniel Eisenstein ◽  
...  
Keyword(s):  
Weight Status ◽  
Preventive Measures ◽  
Preliminary Evidence ◽  
Normal Weight ◽  
Preventative Measures ◽  
Significant Difference ◽  
The Impact ◽  
Weight Data ◽  
Overweight Or Obesity

Purpose. Preventive measures to curtail the spread of the Coronavirus Disease 2019 (COVID-19)—such as home quarantine, closure of schools/programs—are necessary, yet the impact of these restrictions on children’s weight status is unknown. The purpose of this case report was to investigate changes in children’s body mass index (BMI) and zBMI during COVID-19 quarantine. Methods. Children had their heights and weights recorded early March 2020 (pre-COVID-19) and 5 months later (early August 2020). Paired sample t tests examined changes in BMI and zBMI from baseline to follow-up. Results. Twenty-nine children (62% female; mean age 9.3 years; 27.5% with overweight or obesity) provided height and weight data at both time points. There was a significant difference in pre-COVID-19 BMI (mean [M] = 20.1, standard deviation [SD] = 6.0) and follow-up BMI (M = 20.7, SD = 6.4); t(57) = −3.8, P < .001, and pre-COVID-19 zBMI (M = 0.8, SD = 0.9) and follow-up zBMI (M = 0.9, SD = 0.9); t(57) = -3.1, P = .003. Five of the 29 children moved from normal weight to overweight (n = 4) or obese (n = 1) during 5 months of quarantine. Conclusions. Preliminary evidence shows most children increased their BMI and zBMI values from pre-COVID-19 assessment to the follow-up assessment, 5 months later. These initial findings identify potential incidental negative health consequences of children as a result of COVID-19 preventative measures such as home quarantine.

Inter-annual and seasonal dynamics of amino acid, mineral and vitamin composition of silver belly Leiognathus splendens

2014 ◽  
Vol 95 (4) ◽  
pp. 817-828 ◽  
Author(s):  
Kajal Chakraborty ◽  
Deepu Joseph
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Protein Content ◽  
West Coast ◽  
Sensor Data ◽  
The South ◽  
Post Monsoon ◽  
South West ◽  
South West Coast ◽  
Protein Amino Acids

Silver bellies, Leiognathus splendens were studied for their spatial (south-west and south-east coasts of India), annual (2008–2011) and seasonal (pre-monsoon, monsoon and post-monsoon) variations of protein, amino acids, vitamins and minerals. The monthly mean Sea Viewing Wide Field-of-view Sensor data for the period from January 2008 to December 2011 were taken into account to indicate the distribution of the photosynthetic pigment chlorophyll-a to test the hypothesis that surface productivity might be related to nutritional biochemistry of this species. The four year average total protein content and chlorophyll-a showed good correlation during monsoon on the south-west coast and monsoon/post-monsoon on the south-east coast, suggesting that the protein content is prejudiced by the chlorophyll-a concentration. Amino acid scores observed monsoon maxima along the south-west and south-east coasts. Significant seasonal variations in vitamin content were observed at the study locations with high content of vitamins D3, E, K1 and C on the south-west coast. Na content was maximal during pre-monsoon on the south-west coast, while post-monsoon maxima of Ca and K content were observed. The Fe, Mn and Zn were abundant in the samples collected from the south-west coast. The concentration of Se exhibited maximum values post-monsoon along the south-west and south-east coasts. The present study demonstrated L. splendens as a valuable source of the protein, amino acids, minerals and vitamins, showing that this low-value species is a good source of well balanced proteins with high biological value to be qualified as a preferred healthy food for human consumption.

Comparison of Lipid Profile in Three Species of Myctophids from the South West Coast of Kerala, India

2014 ◽  
Vol 37 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Libin Baby ◽  
Thazhakot Vasunambisan Sankar ◽  
Rangasamy Anandan
Keyword(s):  
Lipid Profile ◽  
West Coast ◽  
The South ◽  
South West ◽  
South West Coast
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