scholarly journals Temporal variations of length, weight and condition of the Asian stinging catfish Heteropneustes fossilis (Bloch, 1794) in the Ganges river (NW Bangladesh)

2021 ◽  
Vol 8 (2) ◽  
pp. 259-266
Author(s):  
Most Farida Parvin ◽  
Md Yeamin Hossain ◽  
Md Ashekur Rahman ◽  
Most Shakila Sarmin ◽  
Zoarder Faruque Ahmed

The present study revealed on temporal variations of length, weight and condition of Heteropneustes fossilis (Bloch, 1794) in the Ganges River, Northwestern Bangladesh. Total 1161 individuals of H. fossilis were caught by various habitual fishing gears such as seine net, cast net and gill net during January to December 2019. For every specimen, body weight (BW) was taken by digital balance to the accuracy of 0.01 g and total length (TL) was taken using a measuring board. Relative condition factor (KR) was assessed by KR = W/(a×Lb), where W is the BW in g, L is the TL in cm and a and b are length-weight relationships parameters. The value of KR ~ 1 specifies good health, >1 specifies over bodyweight as compared to length, whereas <1 suggests a fish in poor condition. The TL varied from 8.5-28.7 cm whereas the BW was 37.17–2250 g. The overall KR for H. fossilis was 0.99-1.06 in the Ganges River. The highest KR was observed in May while the lowest was in January. The KR was significantly correlated with BW in the Ganges River. The outcomes of the study will be helpful for future management of this fish in the Ganges river ecosystem as well as adjacent water bodies. Res. Agric., Livest. Fish.8(2): 259-266, August 2021

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Ganesh Dangal ◽  
Ojash Dangal ◽  
Dharana Gelal

Nepal earthquake of 2015, a massive earthquake that struck near the city of Kathmandu (Gorkha) in central Nepal on April 25, 2015. Nearly 9,000 people were killed, many thousands more were injured, and more than 600,000 structures in Kathmandu and other nearby 31 districts were either damaged or destroyed. The earthquake was felt throughout central and eastern Nepal, much of the Ganges River plain in northern India, and northwestern Bangladesh, as well as in the southern parts of the Plateau of Tibet and western Bhutan.


2013 ◽  
Vol 22 (4) ◽  
pp. 457-462 ◽  
Author(s):  
Lincoln Lima Corrêa ◽  
Letícia Cucolo Karling ◽  
Ricardo Massato Takemoto ◽  
Paulo Sérgio Ceccarelli ◽  
Marlene Tiduko Ueta

Hematology is an important pathological and diagnostic tool. This paper describes the hematological parameters of 76 specimens of Hoplias malabaricus infested with monogenean parasites, which were collected from two lagoons. The hematological parameters included: erythrocyte count (Er), microhematocrit (Hct), hemoglobin (Hb), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC). The blood parameters showed no significant changes associated with the infestation. Water temperature was found to be negatively correlated with MCV and Hct, with values of rs= −0.52, p<0.0001 and rs= −0.48, p<0.0001, respectively. The mean Relative Condition Factor was Kn=1.01, indicating good health conditions of the fish in these lagoons. No correlation was found between the monogenean infestation and the blood parameters, or between the environmental factors and the monogeneans.


2017 ◽  
Vol 49 (3) ◽  
pp. 801-809 ◽  
Author(s):  
Md. Yeamin Hossain ◽  
Md. Alomgir Hossen ◽  
Md. Nasir Uddin Pramanik ◽  
Fairuz Nawer ◽  
Md. Mosaddequr Rahman ◽  
...  

2020 ◽  
Vol 67 (2) ◽  
Author(s):  
Rejani Chandran ◽  
Rajeev K Singh ◽  
Achal Singh ◽  
Pradipta Paul ◽  
Rama Shankar Sah ◽  
...  

Length-weight relationship and condition factor of Chitala chitala (Hamilton, 1822) and Notopterus notopterus (Pallas, 1769) was studied from 439 samples of C. chitala collected from 14 locations and 368 samples of N. notopterus colleted from 19 locations in Indian rivers. The regression coefficient ranged from 2.24 (River Gomti) to 3.24 (River Son) in C. chitala and 2.34 (River Son) to 3.71 (River Krishna) in N. notopterus. Fulton’s condition factor and relative condition factor were found to be greater for N. notopterus than C. chitala in common sites of collection. Spatial variations indicated better biological behaviour for C. chitala in River Son and for N. notopterus in River Chambal. The results of the study form important baseline information for developing sustainable management and conservation measures.


2015 ◽  
Vol 44 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Md. Yeamin Hossain ◽  
Sharmin Jahan ◽  
Md. Abu Sayed Jewel ◽  
Md. Mosaddequr Rahman ◽  
Mst. Monira Khatun ◽  
...  

Life ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 529
Author(s):  
Wafa Boulajfene ◽  
Montassar Lasram ◽  
Sabiha Zouari-Tlig

This work aims to assess the spatial and temporal variations of four biomarkers activities and to integrate their biological responses in a battery using the gastropod Phorcus turbinatus. The monitoring was carried out during the period between April 2014 and January 2015 at six stations along the northern and the northeastern coasts of Tunisia. The Fulton condition factor was estimated and the activities of catalase, acetylcholinesterase and glutathione-S-transferase were evaluated by spectrophotometry. A multi-biomarker battery approach was used to assess ecosystems’ condition and to identify environmental impacts on the organisms. The results suggest that the enzymatic activities of CAT and GST depend especially on seasons. As for AChE activity, it was similar between seasons and stations. The values of the integrated biological response were maximal at Jarzouna in summer and at Sidi Daoued in winter, indicating the presence of severe stressors suffered by the organisms. This perturbation may be due to the enrichment of the waters by xenobiotics, namely polycyclic aromatic hydrocarbons, insecticides, phosphate wastes, PCBs and pesticides. Thus, P. turbinatus seems to be a good bioindicator of chemical pollution, constituting an adequate tool for a bio-monitoring program.


1995 ◽  
Vol 25 (3) ◽  
pp. 192-196 ◽  
Author(s):  
G. J. Chakrapani ◽  
V. Subramanian ◽  
R. J. Gibbs ◽  
P. K. Jha

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