scholarly journals SNP panel development for genetic management of wild and domesticated white bass (Morone chrysops )

2018 ◽  
Vol 50 (1) ◽  
pp. 92-96 ◽  
Author(s):  
H. Zhao ◽  
A. Fuller ◽  
W. Thongda ◽  
H. Mohammed ◽  
J. Abernathy ◽  
...  
1983 ◽  
Vol 40 (3) ◽  
pp. 306-312 ◽  
Author(s):  
A. J. Niimi

Rainbow trout (Salmo gairdneri), white sucker (Catostomus commersoni), white bass (Morone chrysops), smallmouth bass (Micropterus dolomieui), and yellow perch (Perca flavescens) were collected from Lakes Ontario and Erie to examine the relationship between contaminant levels in females and their eggs. Factors such as the percent lipid in the fish and percent of total lipid deposited in the eggs significantly influenced (P < 0.01) contaminant transfer. The percentages of the 9–11 organic contaminants transferred generally showed less variation within a species than the percentages for a substance transferred among the five species examined. This relationship was consistent even though there was over a 10-fold range in contaminant concentrations within a given species. Mercury did not demonstrate this response because the percentage in eggs was low for all species. The levels of PCB monitored in eggs of rainbow trout collected from Lake Ontario suggest that egg and fry survival rates could be affected based on the toxicological evidence from other studies. An examination of the possible effects of spawning on the kinetics of contaminants among these species suggests that relative body concentrations of organic contaminants may be decreased by 5% or be increased by 10%, and mercury levels may be increased by 6–22% following the deposition of eggs. The amount of change varies with species and is influenced by the percent egg weight of body weight, and the rate of contaminant transfer from females to eggs.Key words: toxicology, contaminants, reproduction, Lake Ontario, Lake Erie


Author(s):  
Davíð Gíslason ◽  
Robert L. McLaughlin ◽  
Beren W Robinson

Decreases in size at maturation in harvested fish populations can reduce productivity and resilience. Delineating the causes for these changes in maturation is challenging. We assessed harvest and large-scale ecosystem variability as causes for changes in maturation in four Lake Erie fishes. Regulated harvests of Yellow Perch (Perca flavescens) and Walleye (Sander vitreus) are greater than unregulated harvests of White Perch (Morone americana) and White Bass (Morone chrysops). Our assessment considered cohort data from 1991-2012 for each species. We used a conceptual model of harvest-induced plasticity to show that changes in female length at 50% maturity (L50) were unrelated to harvest intensity in all species. We then demonstrated that changes in female L50 among cohorts were synchronous across species. Post-hoc analysis of variables capturing year-to-year variation in climatic and lake conditions suggested L50 was larger when water levels were near the norm for the study period and smaller at low and high levels. We conclude that changes in L50 were most strongly related to ecosystem changes unrelated to harvest intensity.


1976 ◽  
Vol 33 (11) ◽  
pp. 2596-2598 ◽  
Author(s):  
A. B. Stasko ◽  
R. M. Horrall

Rhythmic beats in ultrasonic signals from free-swimming fish fitted with continuous-wave transmitters were noted during tracking of four species. Such signal beats corresponded with visually observed tailbeats of salmon and are presumed to have resulted from a Doppler effect due to undulations of the body and tail. The beats cannot be detected from pulsed transmitters. Tailbeat frequencies of white bass (Morone chrysops) were higher than those of salmon for the same swimming speed in body lengths per second.


Aquaculture ◽  
1997 ◽  
Vol 153 (3-4) ◽  
pp. 301-313 ◽  
Author(s):  
Costadinos C. Mylonas ◽  
Ahikam Gissis ◽  
Yoav Magnus ◽  
Yonathan Zohar

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