Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000359828> ?p ?o ?g. }
- W2000359828 endingPage "78" @default.
- W2000359828 startingPage "71" @default.
- W2000359828 abstract "Abstract This study assesses the changes in genetic diversity using two different methods in eight captive bred lines of banana shrimp (Fenneropenaeus merguiensis) that had been mass selected for length for up to 14 generations. Specifically, mitochondrial D-loop DNA sequencing and genotyping using five DNA microsatellite loci were used to document changes in haplotype diversity and allelic diversity numbers at several time points during and up to 14 generations of captive bred lines, typically maintained without intercrossing among lines. Data from eight of the lines were compared with each other and to a reference sample of wild caught animals. As each wild animal had a unique mtDNA haplotype, we estimate that there were 20 different mtDNA haplotypes in each of the two different founding stocks. The average number of haplotypes was 1.8 after 11 or more generations of captive breeding. Similarly, whereas the wild reference stock had an average number of more than 13 microsatellite alleles per locus, the descendent lines had an average of 5.6 per locus after 11 or more generations. These declines were evident despite strategies that had been put in place to maintain genetic variation, including the use of up to 1000 brood stock per generation. The loss of genetic variation was unequivocal being evident for both DNA methods and in all the different lines. Effective population size (Ne), as derived from linkage disequilibrium, was estimated to average about nine after 11–13 generations in the captively bred lines, compared with 263 estimated in the wild samples. This corresponds to a rate of inbreeding of about 4% per generation for the captively bred lines. Additive genetic variance of the captively bred lines, estimated under the assumption of neutrality, ranged from about 75% to 25% that in the wild samples. We therefore conclude that mass selection, even when using a relatively large number of broodstock, still results in substantial loss of allelic diversity within lines over generations, and a reduction of effective population size and genetic variance, to the degree that productivity could have been compromised compared with similarly selected but outbred stocks. Loss occurred relatively consistently among the different lines. It was common for different microsatellite alleles or mtDNA haplotypes to have persisted in the different lines, such that the total number of haplotypes and allele types among all lines was much greater than that within given single lines, and the number of alleles among lines approximated that found in the wild. This observation, evident because many different lines were monitored, suggests that under certain circumstances (fixation and selection), more net genetic variability can be maintained over many generations of selection by keeping multiple different and independent lines rather than one large single line. Accordingly, if multiple lines are maintained, there could be some practical options to reconstitute allelic and haplotype variation without new introductions of genetically unimproved stock from the wild." @default.
- W2000359828 created "2016-06-24" @default.
- W2000359828 creator A5012687528 @default.
- W2000359828 creator A5026083348 @default.
- W2000359828 creator A5052949862 @default.
- W2000359828 creator A5067430934 @default.
- W2000359828 creator A5079418793 @default.
- W2000359828 creator A5080239648 @default.
- W2000359828 creator A5086944282 @default.
- W2000359828 creator A5088288404 @default.
- W2000359828 creator A5089566403 @default.
- W2000359828 date "2014-05-01" @default.
- W2000359828 modified "2023-09-24" @default.
- W2000359828 title "Can genetic diversity be maintained in long term mass selected populations without pedigree information? — A case study using banana shrimp Fenneropenaeus merguiensis" @default.
- W2000359828 cites W1500716198 @default.
- W2000359828 cites W1599692310 @default.
- W2000359828 cites W1958223748 @default.
- W2000359828 cites W1974285012 @default.
- W2000359828 cites W1975312064 @default.
- W2000359828 cites W1975805818 @default.
- W2000359828 cites W1982558293 @default.
- W2000359828 cites W1989971198 @default.
- W2000359828 cites W1993655006 @default.
- W2000359828 cites W2004444667 @default.
- W2000359828 cites W2019303941 @default.
- W2000359828 cites W2019794420 @default.
- W2000359828 cites W2021003945 @default.
- W2000359828 cites W2042405471 @default.
- W2000359828 cites W2052458716 @default.
- W2000359828 cites W2059147403 @default.
- W2000359828 cites W2060643277 @default.
- W2000359828 cites W2064787809 @default.
- W2000359828 cites W2065215902 @default.
- W2000359828 cites W2073967933 @default.
- W2000359828 cites W2076417468 @default.
- W2000359828 cites W2082290394 @default.
- W2000359828 cites W2098745212 @default.
- W2000359828 cites W2107473082 @default.
- W2000359828 cites W2108911279 @default.
- W2000359828 cites W2114510149 @default.
- W2000359828 cites W2114680659 @default.
- W2000359828 cites W2117886497 @default.
- W2000359828 cites W2128202713 @default.
- W2000359828 cites W2131475432 @default.
- W2000359828 cites W4233758357 @default.
- W2000359828 doi "https://doi.org/10.1016/j.aquaculture.2014.02.026" @default.
- W2000359828 hasPublicationYear "2014" @default.
- W2000359828 type Work @default.
- W2000359828 sameAs 2000359828 @default.
- W2000359828 citedByCount "36" @default.
- W2000359828 countsByYear W20003598282014 @default.
- W2000359828 countsByYear W20003598282015 @default.
- W2000359828 countsByYear W20003598282016 @default.
- W2000359828 countsByYear W20003598282017 @default.
- W2000359828 countsByYear W20003598282018 @default.
- W2000359828 countsByYear W20003598282019 @default.
- W2000359828 countsByYear W20003598282020 @default.
- W2000359828 countsByYear W20003598282021 @default.
- W2000359828 countsByYear W20003598282022 @default.
- W2000359828 countsByYear W20003598282023 @default.
- W2000359828 crossrefType "journal-article" @default.
- W2000359828 hasAuthorship W2000359828A5012687528 @default.
- W2000359828 hasAuthorship W2000359828A5026083348 @default.
- W2000359828 hasAuthorship W2000359828A5052949862 @default.
- W2000359828 hasAuthorship W2000359828A5067430934 @default.
- W2000359828 hasAuthorship W2000359828A5079418793 @default.
- W2000359828 hasAuthorship W2000359828A5080239648 @default.
- W2000359828 hasAuthorship W2000359828A5086944282 @default.
- W2000359828 hasAuthorship W2000359828A5088288404 @default.
- W2000359828 hasAuthorship W2000359828A5089566403 @default.
- W2000359828 hasConcept C121332964 @default.
- W2000359828 hasConcept C144024400 @default.
- W2000359828 hasConcept C149923435 @default.
- W2000359828 hasConcept C18903297 @default.
- W2000359828 hasConcept C19165224 @default.
- W2000359828 hasConcept C2776841996 @default.
- W2000359828 hasConcept C2781316041 @default.
- W2000359828 hasConcept C2908647359 @default.
- W2000359828 hasConcept C505870484 @default.
- W2000359828 hasConcept C61797465 @default.
- W2000359828 hasConcept C62520636 @default.
- W2000359828 hasConcept C81977670 @default.
- W2000359828 hasConcept C86803240 @default.
- W2000359828 hasConcept C90856448 @default.
- W2000359828 hasConceptScore W2000359828C121332964 @default.
- W2000359828 hasConceptScore W2000359828C144024400 @default.
- W2000359828 hasConceptScore W2000359828C149923435 @default.
- W2000359828 hasConceptScore W2000359828C18903297 @default.
- W2000359828 hasConceptScore W2000359828C19165224 @default.
- W2000359828 hasConceptScore W2000359828C2776841996 @default.
- W2000359828 hasConceptScore W2000359828C2781316041 @default.
- W2000359828 hasConceptScore W2000359828C2908647359 @default.
- W2000359828 hasConceptScore W2000359828C505870484 @default.
- W2000359828 hasConceptScore W2000359828C61797465 @default.
- W2000359828 hasConceptScore W2000359828C62520636 @default.
- W2000359828 hasConceptScore W2000359828C81977670 @default.
- W2000359828 hasConceptScore W2000359828C86803240 @default.
- W2000359828 hasConceptScore W2000359828C90856448 @default.