When Your Child Is Missing: A Family Survival Guide

2013 ◽  
Author(s):  
J. Flores
Keyword(s):  
Family Survival

scholarly journals Linking Pedigree Information to the Gene Expression Phenotype to Understand Differential Family Survival Mechanisms in Highly Fecund Fish: A Case Study in the Larviculture of Pacific Bluefin Tuna

2021 ◽  
Vol 43 (3) ◽  
pp. 2098-2110
Author(s):  
Motoshige Yasuike ◽  
Kazunori Kumon ◽  
Yosuke Tanaka ◽  
Kenji Saitoh ◽  
Takuma Sugaya
Keyword(s):  
Gene Expression ◽  
Mass Culture ◽  
Bluefin Tuna ◽  
Pedigree Information ◽  
Specific Gene ◽  
Pacific Bluefin Tuna ◽  
Thunnus Orientalis ◽  
Effective Population ◽  
Family Survival ◽  
Survival Mechanisms

Mass spawning in fish culture often brings about a marked variance in family size, which can cause a reduction in effective population sizes in seed production for stock enhancement. This study reports an example of combined pedigree information and gene expression phenotypes to understand differential family survival mechanisms in early stages of Pacific bluefin tuna, Thunnus orientalis, in a mass culture tank. Initially, parentage was determined using the partial mitochondrial DNA control region sequence and 11 microsatellite loci at 1, 10, 15, and 40 days post-hatch (DPH). A dramatic proportional change in the families was observed at around 15 DPH; therefore, transcriptome analysis was conducted for the 15 DPH larvae using a previously developed oligonucleotide microarray. This analysis successfully addressed the family-specific gene expression phenotypes with 5739 differentially expressed genes and highlighted the importance of expression levels of gastric-function-related genes at the developmental stage for subsequent survival. This strategy demonstrated herein can be broadly applicable to species of interest in aquaculture to comprehend the molecular mechanism of parental effects on offspring survival, which will contribute to the optimization of breeding technologies.

Early Results of a White Ash Provenance Test in Central Alabama

1981 ◽  
Vol 5 (2) ◽  
pp. 65-67 ◽  
Author(s):  
S. E. Duba ◽  
J. F. Goggans ◽  
K. E. Clausen ◽  
R. M. Patterson
Keyword(s):  
Baton Rouge ◽  
Growing Season ◽  
Height Growth ◽  
National Forest ◽  
White Ash ◽  
The Third ◽  
Early Results ◽  
Provenance Test ◽  
The Family ◽  
Family Survival

Abstract A provenance test of white ash (Fraxinus americana L.) seedlings was established during January 1976 in the Tuskegee National Forest in Alabama. The seedlings were representative of the southern portion of the species' range. At the end of the third growing season, family survival ranged from 84 to 100 percent. Overall survival averaged 97 percent. Provenances and families within provenances differed in height after two and three years in the field. The family component of variation is increasing in proportion with age. The southernmost origins of East Baton Rouge, Louisiana (3.26 m) and Hardin, Texas (2.98 m) had the tallest average heights. The East Baton Rouge and Hardin sources are assumed to be tetraploid (2N = 92). There seems to be both a north-south relationship and a ploidy-level relationship to the height-growth pattern. Seedlings from the southernmost sources should perform satisfactorily in south and central Alabama.

Southern Strivings

2017 ◽  
Author(s):  
Erik S. Gellman ◽  
Jarod Roll
Keyword(s):  
Meaning In Life ◽  
Life Stories ◽  
Jim Crow ◽  
Young Men ◽  
Growing Up ◽  
Agricultural Labor ◽  
Rural South ◽  
Family Survival ◽  
Jim Crow South

This chapter details the respective backgrounds of the two preachers under discussion, highlighting the similarities in their life stories—particularly their shared frustrations growing up as ambitious, talented young men in the rural South. Their youths were defined by the tensions between family survival and an individual sense of calling, between agricultural labor and adventure, and between physical hunger and the thirst for deeper meaning in life. Moreover, the laws and culture of the Jim Crow South also held sway over both their lives, and made Claude Williams's youth at once very similar to, yet completely separate from, Owen Whitfield's experience. Both men would, however, come to the same religious calling as they came of age.

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