Heritability of fluctuating asymmetry for multiple traits in chinook salmon (Oncorhynchus tshawytscha)

2000 ◽  
Vol 57 (11) ◽  
pp. 2186-2192 ◽  
Author(s):  
Colleen A Bryden ◽  
Daniel D Heath
Keyword(s):  
Fluctuating Asymmetry ◽  
Chinook Salmon ◽  
Oncorhynchus Tshawytscha ◽  
Multiple Traits ◽  
Stress Indicator ◽  
Significant Heritability ◽  
The Individual ◽  
The Right ◽  
Genetic Contributions ◽  
Gill Raker

The heritability of fluctuating asymmetry (FA) as an indicator of developmental instability is of interest to evolutionary and conservation biologists and is the subject of ongoing controversy. This study examined the inheritance of FA in two groups of fish: domestic chinook salmon (Oncorhynchus tshawytscha) mated in a full-sib design and domestic and wild chinook salmon mated in a half-sib design. Eight traits were measured on the right and left sides of each fish: eye diameter, head length, maxillary length, branchiostegal ray number, pectoral and pelvic fin ray number, and upper and lower gill raker number on the first gill arch. Narrow-sense heritabilities were calculated from parent-offspring regressions for the first group and using sib analysis for the second group. Our data represent the largest breeding program designed to detect heritability of FA in fish reported to date. We found no significant heritability of FA for any of the individual traits examined or for a composite FA index. Our results indicate that FA estimates in chinook salmon will not be confounded by appreciable additive genetic contributions and thus can be reliably used as an environmental and genetic stress indicator.

scholarly journals Modelling salmon migration as a mixture problem

2019 ◽  
Vol 76 (6) ◽  
pp. 856-870 ◽  
Author(s):  
Skip McKinnell
Keyword(s):  
Chinook Salmon ◽  
Sockeye Salmon ◽  
Oncorhynchus Tshawytscha ◽  
Simulated Data ◽  
Columbia River ◽  
Single Pulse ◽  
Model Complexity ◽  
Fraser River ◽  
The Individual ◽  
Large Adult

Pulses of abundance in salmon migrations can arise from single populations arriving at different times, from multiple populations with different timing characteristics, or as a combination of these. Daily observations typically record an aggregate measure of abundance passing some location rather than the abundances of the individual components. An objective method is described that partitions a compound migration into its component parts by exploiting differences in the characteristics of each pulse. Simulated data were used to demonstrate when greater model complexity may be desirable. Three case studies of increasing complexity (Chilko Lake sockeye salmon smolts (Oncorhynchus nerka), large adult Columbia River Chinook salmon (Oncorhynchus tshawytscha), Fraser River salmon test fishery) demonstrate how the model can be applied in practice. Results indicated that Chilko Lake smolts rarely emigrate to sea as a single pulse, that the dates used to distinguish the spring run of Chinook salmon in the Columbia River may be overestimating its abundance, and that pulses of sockeye salmon abundance in a Fraser River ocean test fishery in 2014 may have arisen from some factor other than population composition.

Fluctuating asymmetry of adult Chinook Salmon (Oncorhynchus tshawytscha) otoliths from wild and hatchery origins

2019 ◽  
Vol 54 (1) ◽  
pp. 431-446 ◽  
Author(s):  
Alex L. Koeberle ◽  
Ivan Arismendi ◽  
Whitney Crittenden ◽  
David Leer ◽  
David L. G. Noakes
Keyword(s):  
Fluctuating Asymmetry ◽  
Chinook Salmon ◽  
Oncorhynchus Tshawytscha

scholarly journals Neutral genetic variation in adult Chinook salmon ( Oncorhynchus tshawytscha ) affects brain-to-body trade-off and brain laterality

2017 ◽  
Vol 4 (12) ◽  
pp. 170989 ◽  
Author(s):  
Mallory L. Wiper ◽  
Sarah J. Lehnert ◽  
Daniel D. Heath ◽  
Dennis M. Higgs
Keyword(s):  
Genetic Variation ◽  
Chinook Salmon ◽  
Oncorhynchus Tshawytscha ◽  
Directional Asymmetry ◽  
Trade Offs ◽  
Neutral Genetic Variation ◽  
Low Levels ◽  
Inbreeding Level ◽  
The Right ◽  
The Brain

Low levels of heterozygosity can have detrimental effects on life history and growth characteristics of organisms but more subtle effects such as those on trade-offs of expensive tissues and morphological laterality, especially of the brain, have not been explicitly tested. The objective of the current study was to investigate how estimated differences in heterozygosity may potentially affect brain-to-body trade-offs and to explore how these heterozygosity differences may affect differential brain growth, focusing on directional asymmetry in adult Chinook salmon ( Oncorhynchus tshawytscha ) using the laterality and absolute laterality indices. Level of inbreeding was estimated as mean microsatellite heterozygosity resulting in four ‘inbreeding level groups’ (Very High, High, Medium, Low). A higher inbreeding level corresponded with a decreased brain-to-body ratio, thus a decrease in investment in brain tissue, and also showed a decrease in the laterality index for the cerebellum, where the left hemisphere was larger than the right across all groups. These results begin to show the role that differences in heterozygosity may play in differential tissue investment and in morphological laterality, and may be useful in two ways. Firstly, the results may be valuable for restocking programmes that wish to emphasize brain or body growth when crossing adults to generate individuals for release, as we show that genetic variation does affect these trade-offs. Secondly, this study is one of the first examinations to test the hypothesized relationship between genetic variation and laterality, finding that in Chinook salmon there is potential for an effect of inbreeding on lateralized morphology, but not in the expected direction.

Systematic hexamitid (Protozoa: Diplomonadida) Infection in seawater pen-reared Chinook salmon Oncorhynchus tshawytscha

1992 ◽  
Vol 14 ◽  
pp. 81-89 ◽  
Author(s):  
ML Kent ◽  
J Ellis ◽  
JW Fournie ◽  
SC Dawe ◽  
JW Bagshaw ◽  
...  
Keyword(s):  
Chinook Salmon ◽  
Oncorhynchus Tshawytscha

Boundaries of Restricting the Rights of Human and Citizen

2020 ◽  
Vol 26 (2) ◽  
pp. 232-236
Author(s):  
Manol Stanin
Keyword(s):  
Negative Impact ◽  
The Individual ◽  
The Right ◽  
Positive Results

AbstractLimitation of rights is a measure proved its effectiveness with positive results for the community in war, military or another emergency.Attitude to rightsmust be human with a view to the right-to-human relationshipbecause the crossing of a certain boundary leads to a disintegration of rights and a negative impact on the personality.This implies necessity from legal institutionalization of clear criteria to refine the limitation of rights, both for the purpose of their protection and for the purpose of protecting the individual.

Tourism as a Tool for the Fulfilment of the Rights to Rest and Leisure Enshrined in Article No. 24 of the Universal Declaration of Human Rights

2019 ◽  
Vol 76 (3-4) ◽  
pp. 180-188
Author(s):  
Bianca Nicla Romano
Keyword(s):  
Human Rights ◽  
Legal System ◽  
Universal Declaration ◽  
Title V ◽  
Negative Consequences ◽  
Real Right ◽  
Right To Work ◽  
The Individual ◽  
The Right ◽  
Italian Constitution

Art. 24 of the 1948 Declaration of Human Rights recognises and protects the right of the individual to rest and leisure. This right has to be fully exercised without negative consequences on the right to work and the remuneration. Tourism can be considered one of the best ways of rest and leisure because it allows to enrich the personality of the individual. Even after the reform of the Title V this area is no longer covered by the Italian Constitution, the Italian legal system protects and guarantees it as a real right, so as to get to recognize its existence and the consequent compensation of the so-called “ruined holiday damage”. This kind of damage has not a patrimonial nature, but a moral one, and the Tourist-Traveler can claim for it when he has not been able to fully enjoy his holiday - the essential fulcrum of tourism - intended as an opportunity for leisure and/or rest, essential rights of the individual.

VALUE EDUCATION SYSTEM IN INDIA

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Jyoti Narayan Patra ◽  
Jayanta Mete
Keyword(s):  
Education System ◽  
Personality Development ◽  
The Family ◽  
The Individual ◽  
The Right

Values are like seeds that sprout, become saplings, grow into trees and spread their branches all around. To be able to think right, to feel the right kind of emotions and to act in the desirable manner are the prime phases of personality development. Building up of values system starts with the individual, moves on to the family and community, reorienting systems, structures and institutions, spreading throughout the land and ultimately embracing the planet as a whole. The culture of inclusivity is particularly relevant and important in the context of our society, nation and making education a right for all children.

Ayurveda dietary guidelines during Covid-19 Pandemic

2020 ◽  
Vol 11 (SPL1) ◽  
pp. 1477-1481
Author(s):  
Ishwari Gaikwad ◽  
Priyanka Shelotkar
Keyword(s):  
Dietary Habits ◽  
Relevant Literature ◽  
Dietary Guidelines ◽  
The Body ◽  
Daily Regimen ◽  
Web Page ◽  
Healthy State ◽  
Health Disorders ◽  
The Individual ◽  
The Right

The current world situation is both frightening and alarming due to the massive disruption caused by the Covid-19 pandemic. The next few days are censorious as we need to be very precautious in our daily regimen as well as dietary habits. Ayurveda offers knowledge about food based on certain reasoning. Indecent food custom is the chief cause for the rising development of health disorders in the current era. In classical texts of Ayurveda, the concept of diet explained well, ranging from their natural sources, properties and specific utility in pathological as well as physiological manner. In this work, the review of the relevant literature of Ahara (Diet) was carried out from Charak Samhita and other texts, newspapers, articles, web page related to the same.  Every human being is unique with respect to his Prakriti (Physical and mental temperament), Agni (Digestive capacity), Koshtha  (Nature of bowel) etc. For that reason, the specificity of the individual should be kept in mind. Ahara, when consumed in the appropriate amount at the right moment following all Niyamas (Guidelines) given in Ayurveda texts, gives immunity and keeps the body in a healthy state during pandemics such as Covid-19. Ultimately, this will help the human body to maintain its strength for life. This article reviews the concept of diet viz. combination of foods, their quantity and quality, methods of preparation and processing, which are to be followed during pandemics and are essential in maintenance and endorsement of health and preclusion of diseases.

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