Strategies for genetic conservation, gene banking and maintaining genetic quality.

2009 ◽  
pp. 248-254
Author(s):  
R. A. Dunham
Keyword(s):  
Genetic Conservation ◽  
Genetic Quality

scholarly journals Fluctuating Asymmetry and Sexual Dimorphism in Human Facial Morphology: A Multi-Variate Study

Symmetry ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 304
Author(s):  
Omid Ekrami ◽  
Peter Claes ◽  
Ellen Van Assche ◽  
Mark D. Shriver ◽  
Seth M. Weinberg ◽  
...  
Keyword(s):  
Fluctuating Asymmetry ◽  
Life History Traits ◽  
Principal Component ◽  
Underlying Mechanism ◽  
High Density ◽  
Direct Result ◽  
Facial Morphology ◽  
Strongly Correlated ◽  
Large Dataset ◽  
Genetic Quality

(1) Background: Fluctuating asymmetry is often used as an indicator of developmental instability, and is proposed as a signal of genetic quality. The display of prominent masculine phenotypic features, which are a direct result of high androgen levels, is also believed to be a sign of genetic quality, as these hormones may act as immunosuppressants. Fluctuating asymmetry and masculinity are therefore expected to covary. However, there is lack of strong evidence in the literature regarding this hypothesis. (2) Materials and methods: In this study, we examined a large dataset of high-density 3D facial scans of 1260 adults (630 males and 630 females). We mapped a high-density 3D facial mask onto the facial scans in order to obtain a high number of quasi-landmarks on the faces. Multi-dimensional measures of fluctuating asymmetry were extracted from the landmarks using Principal Component Analysis, and masculinity/femininity scores were obtained for each face using Partial Least Squares. The possible correlation between these two qualities was then examined using Pearson’s coefficient and Canonical Correlation Analysis. (3) Results: We found no correlation between fluctuating asymmetry and masculinity in men. However, a weak but significant correlation was found between average fluctuating asymmetry and masculinity in women, in which feminine faces had higher levels of fluctuating asymmetry on average. This correlation could possibly point to genetic quality as an underlying mechanism for both asymmetry and masculinity; however, it might also be driven by other fitness or life history traits, such as fertility. (4) Conclusions: Our results question the idea that fluctuating asymmetry and masculinity should be (more strongly) correlated in men, which is in line with the recent literature. Future studies should possibly focus more on the evolutionary relevance of the observed correlation in women.

Title: priority areas for genetic conservation of Eremanthus erythropappus (DC.) MacLeish in Brazil

2021 ◽  
Author(s):  
Joelma Aparecida Rabelo de Pádua ◽  
Lucas Fernandes Rocha ◽  
Murilo Malveira Brandão ◽  
Fábio de Almeida Vieira ◽  
Dulcinéia de Carvalho
Keyword(s):  
Genetic Conservation ◽  
Priority Areas

scholarly journals An introduction to genetic quality in the context of sexual selection

Genetica ◽  
2008 ◽  
Vol 134 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Trevor E. Pitcher ◽  
Herman L. Mays
Keyword(s):  
Sexual Selection ◽  
Genetic Quality

More sires may enhance offspring fitness in Northern Map Turtles (Graptemys geographica)

2013 ◽  
Vol 91 (8) ◽  
pp. 581-588 ◽  
Author(s):  
Nicola Banger ◽  
Gabriel Blouin-Demers ◽  
Grégory Bulté ◽  
Stephen C. Lougheed
Keyword(s):  
Sexual Selection ◽  
Reproductive Success ◽  
Hatching Success ◽  
Locomotor Performance ◽  
Conservative Estimate ◽  
Genetic Quality ◽  
Offspring Fitness ◽  
Sexual Selection Theory ◽  
Map Turtles ◽  
Graptemys Geographica

Sexual selection theory predicts that males should be promiscuous to maximize their reproductive success, while females should be choosy. Yet females of many taxa often produce progeny sired by multiple males, indicating that promiscuity can be important for the reproductive success of females. Promiscuity may enhance the fitness of females if it increases the genetic quality, or the genetic variety, and thus the viability of their offspring. We quantified the number of sires per clutch in a population of Northern Map Turtles (Graptemys geographica (LeSueur, 1817)) in Lake Opinicon, Ontario, Canada, and tested whether the number of sires affects several metrics of viability in hatchlings. Based on the most conservative estimate, at least 71% of clutches in this population are sired by multiple males, but there was no evidence that larger clutches are sired by more males. Clutches sired by more males had higher hatching success and survival, but the differences were not statistically significant. We did not find any effect of the number of sires on hatchling morphology or locomotor performance. Collectively, our results partially support the hypothesis that promiscuity can increase the reproductive success of female Northern Map Turtles.

Genetic Conservation in gp36 Transmembrane Sequences of Indian HIV Type 2 Isolates

2011 ◽  
Vol 27 (12) ◽  
pp. 1337-1343 ◽  
Author(s):  
Sushama Jadhav ◽  
Srikanth Tripathy ◽  
Smita Kulkarni ◽  
Devidas Chaturbhuj ◽  
Rucha Ghare ◽  
...  
Keyword(s):  
Genetic Conservation

Implementation of Genetic Conservation Practices in a Muskellunge Propagation and Stocking Program

Fisheries ◽  
2010 ◽  
Vol 35 (8) ◽  
pp. 388-395 ◽  
Author(s):  
Martin J. Jennings ◽  
Brian L. Sloss ◽  
Gene R. Hatzenbeler ◽  
Jeffrey M. Kampa ◽  
Timothy D. Simonson ◽  
...  
Keyword(s):  
Genetic Conservation ◽  
Conservation Practices
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