Experimental trophic ecology of juvenile largemouth bass,Micropterus salmoides, and blue tilapia,Oreochromis aureus

1995 ◽  
Vol 42 (2) ◽  
pp. 201-211 ◽  
Author(s):  
Stephen L. Traxler ◽  
Brian Murphy
Keyword(s):  
Largemouth Bass ◽  
Trophic Ecology ◽  
Micropterus Salmoides ◽  
Oreochromis Aureus ◽  
Blue Tilapia

scholarly journals Polyculture of Largemouth Bass (Micropterus salmoides) with Blue Tilapia (Oreochromis aureus): Using Tilapia Progeny as Forage

2020 ◽  
pp. 1-3
Author(s):  
William A Wurts ◽  
◽  
Peter W Perschbacher ◽  
D Allen Davis ◽  
Edwin H Robinson ◽  
...  
Keyword(s):  
Largemouth Bass ◽  
Micropterus Salmoides ◽  
High Density ◽  
Low Density ◽  
Secchi Disc ◽  
Female Ratio ◽  
Oreochromis Aureus ◽  
Male Female Ratio ◽  
Blue Tilapia ◽  
Brood Fish

In this study, five, 0.04-ha ponds were stocked with advanced size largemouth bass fingerlings at densities of 124, 247, 494, 988, and 1136/ha. Tilapia brood fish were stocked at densities of 590/ha (male: female ratio was 1:3). Pond trials were conducted for a 6-month period, June to December 1985. Bass survival ranged from 40 to 89%. Bass stocked at densities 494/ha (low density) grew significantly larger than those at 988/ha (high density). Mean bass weights and percent weight gains at harvest in low versus high density ponds were 593 g and 3,318% and 120 g and 329%, respectively. High density bass ponds produced larger tilapia broodfish at harvest. The number of juvenile tilapia surviving in low density bass ponds was substantially greater (20,000 juveniles/ha) than in high density bass ponds (99 and 420 juveniles/ha). The higher survival of tilapia juveniles in low density bass ponds was the apparent cause of significantly higher turbidity (determined from secchi disc measurements) in these ponds. The results of this study suggest that forage/predator ratios, based on densities of female tilapia broodfish to bass, of 0.7 and 1.4 are suitable for controlling spawn and producing large tilapia or for producing large bass, respectively.

Trophic ecology of largemouth bass and northern pike in allopatric and sympatric assemblages in northern boreal lakes

2000 ◽  
Vol 78 (10) ◽  
pp. 1759-1766 ◽  
Author(s):  
Craig A Soupir ◽  
Michael L Brown ◽  
Larry W Kallemeyn
Keyword(s):  
Largemouth Bass ◽  
Aquatic Insects ◽  
Species Interactions ◽  
Yellow Perch ◽  
Trophic Ecology ◽  
Micropterus Salmoides ◽  
Northern Pike ◽  
Boreal Lakes ◽  
Limited Information ◽  
Top Predators

Largemouth bass (Micropterus salmoides) and northern pike (Esox lucius) are top predators in the food chain in most aquatic environments that they occupy; however, limited information exists on species interactions in the northern reaches of largemouth bass distribution. We investigated the seasonal food habits of allopatric and sympatric assemblages of largemouth bass and northern pike in six interior lakes within Voyageurs National Park, Minnesota. Percentages of empty stomachs were variable for largemouth bass (38-54%) and northern pike (34.7-66.7%). Fishes (mainly yellow perch, Perca flavescens) comprised greater than 60% (mean percent mass, MPM) of the northern pike diet during all seasons in both allopatric and sympatric assemblages. Aquatic insects (primarily Odonata and Hemiptera) were important in the diets of largemouth bass in all communities (0.0-79.7 MPM). Although largemouth bass were observed in the diet of northern pike, largemouth bass apparently did not prey on northern pike. Seasonal differences were observed in the proportion of aquatic insects (P = 0.010) and fishes (P = 0.023) in the diets of northern pike and largemouth bass. Based on three food categories, jackknifed classifications correctly classified 77 and 92% of northern pike and largemouth bass values, respectively. Percent resource overlap values were biologically significant (greater than 60%) during at least one season in each sympatric assemblage, suggesting some diet overlap.

First Record of Trichodina magna Van As and Basson, 1989 (Ciliophora: Trichodinidae) from Gills of Blue Tilapia Oreochromis aureus (Steindachner, 1864) in Iraq

2018 ◽  
pp. 59
Author(s):  
Kefah Naser Abdul-Ameer ◽  
Fatima Khalaf Atwan
Keyword(s):  
First Record ◽  
Oreochromis Aureus ◽  
Tigris River ◽  
Blue Tilapia ◽  
First Time

   The Ciliophoran Trichodina magna Van As and Basson, 1989 is recorded for the first time in in Iraq from gills of the blue tilapia Oreochromis aureus (Steindachner, 1864) Iraq from Al-Graiat location on the Tigris River at Baghdad city. The description and measurements of this external parasite as well as its illustrations are given.  

Pathogeny of disease characterized by swollen liver and spleen in largemouth bass (Micropterus salmoides)

2013 ◽  
Vol 18 (3) ◽  
pp. 654-659 ◽  
Author(s):  
Dongmei MA ◽  
Guocheng DEND ◽  
Junjie BAI ◽  
Shengjie LI ◽  
Xiaoyan JIANG ◽  
...  
Keyword(s):  
Largemouth Bass ◽  
Micropterus Salmoides
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