scholarly journals Pathological effects of Eustrongylides sp. larvae (Dioctophymatidae) infection in freshwater fish, Glossogobius giuris (Ham.) with special reference to ovaries

2012 ◽  
Vol 37 (2) ◽  
pp. 245-250 ◽  
Author(s):  
Pinky Kaur ◽  
Rekha Shrivastav ◽  
T. A. Qureshi
Keyword(s):  
Special Reference ◽  
Freshwater Fish ◽  
Glossogobius Giuris

scholarly journals Determination of the Age and Growth of Glossogobius Giuris (Hamilton-Buchanan, 1822) Using Sectioned Otolith

2012 ◽  
Vol 40 (1) ◽  
pp. 13-19
Author(s):  
Md Sagir Ahmed ◽  
Gulshan Ara Latifa
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Growth Parameters ◽  
Age And Growth ◽  
Von Bertalanffy ◽  
Annual Rings ◽  
Freshwater Fish Species ◽  
Total Length ◽  
Glossogobius Giuris

The freshwater gobi, Glossogobius giuris (Hamilton-Buchanan, 1822)  (Gobiidae: Perciformes) is an important freshwater fish species in Bangladesh. The  age and growth of this species, collected from the river Titas, Brahmanbaria, were  studied with transverse sections of otoliths. The otolith’s opaque zones that are  formed every year were the annual rings. The growth of this species was rapid  during the first two years, reaching 18.5 cm in total length. Most of the specimens  were 1-2 years old and accounted for 90% in total. The maximum age recorded  was five years with 19.5 cm in total length. The von Bertalanffy growth parameters  L? and K for this species were 19.58 cm and 1.36/year, respectively. The study  indicated that the age and growth of G. giuris can be determined using its  sectioned otolith. DOI: http://dx.doi.org/10.3329/bjz.v40i1.12889 Bangladesh J. Zool. 40(1): 13-19, 2012

Notions of Niche and Competition Among Animals, With Special Reference to Freshwater Fish

Nature ◽  
1963 ◽  
Vol 197 (4862) ◽  
pp. 14-17 ◽  
Author(s):  
A. H. WEATHERLEY
Keyword(s):  
Special Reference ◽  
Freshwater Fish

scholarly journals Development of Induced Breeding Technique for Freshwater Fish Gobi, Glossogobius giuris (Hamilton, 1822) Using Pituitary Gland (PG) Extract

2021 ◽  
pp. 24-35
Author(s):  
Selina Yeasmine ◽  
M. Aminur Rahman ◽  
Md. Sarower-E-Mahfuj ◽  
Sonia Sku ◽  
Md. Nazmul Hossen ◽  
...  
Keyword(s):  
Body Weight ◽  
Pituitary Gland ◽  
Freshwater Fish ◽  
Large Scale ◽  
Scale Production ◽  
Male Fish ◽  
Breeding Technique ◽  
Hatching Time ◽  
Glossogobius Giuris ◽  
Hatching Rates

This study aimed to establish induced breeding technique of freshwater fish gobi (Glossogobius giuris), using the pituitary gland (PG) extract. Six experiments were conducted at the Department of Fisheries Biology and Genetics, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh, Bangladesh. First breeding trial was conducted in June using 40, 45, and 50 mg PG kg-1 body weight of the female fish. None of the fish was ovulated in the 1st trial. Two more breeding trials were conducted in July and August, using 6 mg (T1), 8 mg (T2) and 10 mg (T3) PG kg-1 body weight of female, and 3 mg (T4), 4 mg (T5) and 5 mg (T6) PG kg-1 body weight of male fish. After treatment, the ovulation rates were recorded as 56.33±1.53, 82.67±2.52 and 75.33±1.53% in July and 58.00±2.65, 94.67±1.53 and 78.33±1.53% in August under the treatments T1, T2 and T3, respectively. Hatching rates of eggs were observed as 52.00±4.36, 81.67±3.21 and 72.33±6.03% in July, and 54.67±3.23, 91.67±3.06 and 73.67±5.13% in August under the T1, T2 and T3, respectively. Hatching time was ranged from 35 to 48 h and after the absorption of yolk sac (60-72 h), they were survived well when fed with tubificid worms and mixed zooplankton. The female treated with the dose of 8 mg PG kg-1 body weight in August showed the best performance so far as the ovulation, fertilization and hatching rates were concerned, while the single dose of 4 mg kg-1 body weight of PG was found to be effective for male fish in both months. The findings obtained from the present study reveals that induced breeding of G. giuris, using PG extract is successful for large scale production of quality seed in captive condition, which would further facilitate towards the aquaculture production and biodiversity conservation of this important fish species to a greater extent.

The Occurrence of Diphyllobothrium in Trout, with Special Reference to an Outbreak in the West of England

1960 ◽  
Vol 34 (1-2) ◽  
pp. 59-72 ◽  
Author(s):  
Phyllis G. Fraser
Keyword(s):  
Great Britain ◽  
Special Reference ◽  
Freshwater Fish ◽  
Related Species ◽  
The West

(1) The occurrence of outbreaks of Diphyllobothrium in trout and related forms is reviewed.(2) A survey of the occurrence of Diphyllobothrium in Great Britain has been made. Plerocercoids of Diphyllobothrium have been found in approximately half of the areas from which trout have been examined. Three species of Diphyllobothrium at least have been found to infect trout and related species of freshwater fish in this country.

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