Animal Translocations, Genetic Variation, and the Human Settlement of the Pacific

2007 ◽  
pp. 157-170 ◽  
Author(s):  
Elizabeth Matisoo-Smith
Keyword(s):  
Genetic Variation ◽  
Human Settlement ◽  
The Pacific

scholarly journals Complete genome for Actinobacillus pleuropneumoniae serovar 8 reference strain 405: comparative analysis with draft genomes for different laboratory stock cultures indicates little genetic variation

2021 ◽  
Vol 7 (11) ◽  
Author(s):  
Janine T. Bossé ◽  
Yanwen Li ◽  
Liza Miriam Cohen ◽  
Marc Stegger ◽  
Øystein Angen ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Comparative Analysis ◽  
Illumina Sequencing ◽  
Complete Genome ◽  
Type Species ◽  
Reference Strain ◽  
Actinobacillus Pleuropneumoniae ◽  
Content Type ◽  
Pacbio Rs Ii ◽  
The Pacific

We report here the complete genome sequence of the widely studied Actinobacillus pleuropneumoniae serovar 8 reference strain 405, generated using the Pacific Biosciences (PacBio) RS II platform. Furthermore, we compared draft sequences generated by Illumina sequencing of six stocks of this strain, including the same original stock used to generate the PacBio sequence, held in different countries and found little genetic variation, with only three SNPs identified, all within the degS gene. However, sequences of two small plasmids, pARD3079 and p405tetH, detected by Illumina sequencing of the draft genomes were not identified in the PacBio sequence of the reference strain.

scholarly journals Genetic diversity within and between broodstocks of the white shrimp Litopenaeus vannamei (Boone, 1931) (Decapoda, Penaeidae) and its implication for the gene pool conservation

2007 ◽  
Vol 67 (4 suppl) ◽  
pp. 939-943 ◽  
Author(s):  
PD. Freitas ◽  
MR. Calgaro ◽  
PM. Galetti Jr.
Keyword(s):  
Genetic Diversity ◽  
Genetic Variation ◽  
Litopenaeus Vannamei ◽  
Gene Pool ◽  
Rapd Analysis ◽  
Pacific White Shrimp ◽  
White Shrimp ◽  
Brazilian Coast ◽  
The Pacific ◽  
Improvement Programs

Genetic variation within and between fifteen closed broodstock lines of the Pacific white shrimp Litopenaeus vannamei, reared at different hatcheries in the Brazilian coast, was assessed by RAPD analysis. Fifty two polymorphic loci were identified when a set of five decamer primers was used in PCR. The genetic diversity analysis within lines evidenced genetic variation loss probably related to bottleneck effects and inbreeding. In addition, the genetic divergence values between the different samples appear to reflect the initial founder composition of such stocks, in some cases, sharing a common origin, suggesting a putative importance of interbreeding for the establishment of genetic improvement programs for these broodstocks. The genetic variation monitoring appears to be helpful to the gene pool conservation of this aquaculture species, mainly if considered its exotic status in Brazil and the current impossibility of new introduction of wild individuals.

Genetic variation of Batrachochytrium dendrobatidis is linked to skin bacterial diversity in the Pacific treefrog Hyliola regilla ( hypochondriaca )

2021 ◽  
Author(s):  
María Delia Basanta ◽  
Eria A. Rebollar ◽  
Mirna G. García‐Castillo ◽  
Erica Bree Rosenblum ◽  
Allison Q. Byrne ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Bacterial Diversity ◽  
Batrachochytrium Dendrobatidis ◽  
The Pacific ◽  
Pacific Treefrog

Genetic Variation in the Pacific Oyster, Crassostrea gigas

1975 ◽  
Vol 32 (12) ◽  
pp. 2471-2477 ◽  
Author(s):  
Norman E. Buroker ◽  
William K. Hershberger ◽  
Kenneth K. Chew
Keyword(s):  
Genetic Variation ◽  
Crassostrea Gigas ◽  
Pacific Oyster ◽  
Allelic Variation ◽  
Electrophoretic Analysis ◽  
Common Allele ◽  
Effective Number ◽  
The Pacific

Genetic variation, exhibited by electrophoretic analysis of tissue proteins and enzymes, of the Pacific oyster (Crassostrea gigas) was analyzed. Eleven systems were examined, reflecting 15 loci of which 8 were polymorphic and 7 were monomorphic. The number of alleles per locus varied from 1 at four loci (Aat-1, Mdh-1, Me, and To-1) without allelic variation, to 6 at the Pgm locus. The average number of alleles per locus was 2.7, while the effective number of alleles was calculated to be 1.3. An individual was found to be heterozygous, on the average, at 21% of the loci. Allelic variation was found at 11 out of 15, or 73% of the loci. At 53% of the loci the frequency of the most common allele was no greater than 0.95.

Genetic variation in red alder (Alnusrubra) in relation to native climate and geography

1993 ◽  
Vol 23 (9) ◽  
pp. 1930-1939 ◽  
Author(s):  
A. A. Ager ◽  
P. E. Heilman ◽  
R. F. Stettler
Keyword(s):  
Genetic Variation ◽  
Pacific Northwest ◽  
Growth Traits ◽  
Common Garden ◽  
Sympatric Species ◽  
Red Alder ◽  
Geographic Patterns ◽  
The Pacific ◽  
Shoot Phenology ◽  
River Drainages

Genetic variation was examined within and among populations of red alder (Alnusrubra Bong.) from elevational gradients in four river drainages of the Pacific Northwest. Wind-pollinated progenies of 120 trees were grown for 3 years in a common garden environment and measured for growth and shoot phenology. Variation in top weight, bud flush, and leaf abscission was analyzed in relation to native climate and elevation and compared with sympatric species. Strong geographic patterns of variation were observed for all measured traits, apparently reflecting adaptations to highly variable climates within the region studied. Growth traits were correlated with temperature amplitude and length of growing season. Growth rhythm in bud flushing and growth cessation was related to two important environmental cues, spring thermal sums and fall frost dates. Overall levels of variation in red alder appeared to be similar to several sympatric conifers, although variation within populations of red alder was lower. The latter finding may be due to the demography of the riparian populations sampled, or perhaps a characteristic of the species and its colonizing life history.

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