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Fluctuating asymmetry in the insular population of ayu, Plecoglossus altivelis ryukyuensis, estimating its genetic diversity at extinction.
- Source :
-
Ichthyological Research . Jul2022, Vol. 69 Issue 3, p381-386. 6p. - Publication Year :
- 2022
-
Abstract
- The present study tested the hypothesis that whether limited genetic diversity was the main factor that led the Ryukyu-ayu population on Okinawa-jima Island to extinction in the late 1970s. The usability of fluctuating asymmetry (FA) in reflecting genetic diversity was tested using two extant populations of Ryukyu-ayu on Amami-oshima Island, then used to estimate genetic diversity for the extinct population which only formalin-preserved specimens are available. The results showed that higher FA indices were associated with lower genetic diversity in the two extant populations, and the extinct population on Okinawa-jima Island had lower FA indices than the two extant populations on Amami-oshima Island. This finding suggests that the genetic diversity of the extinct population was not low enough as to cause its extinction. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GENETIC variation
*SYMMETRY (Biology)
*ENDANGERED species
Subjects
Details
- Language :
- English
- ISSN :
- 13418998
- Volume :
- 69
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Ichthyological Research
- Publication Type :
- Academic Journal
- Accession number :
- 157529361
- Full Text :
- https://doi.org/10.1007/s10228-021-00840-3