Forecast of the first ascending day and number of ascending ayu Plecoglossus altivelis altivelis in rivers flowing into Lake Biwa

Sakai, Akihisa

doi:10.2331/suisan.76.670

Cited by 3 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, at least in the present case, the statistics can be regarded as those based on a large sample size because the population size in each river was sufficiently large (at least hundreds or thousands individuals; cf. Sakai, 2010Sakai, , 2011 and eDNA could have captured haplotypes from the whole population. Also, a simulation analysis by scaling down the sample size of each to 2000, 1000, and 500 confirmed that the F ST values were still significant in most cases even for the smallest F ST between spring and autumn migrants (7-CN; Table S7).…”

Section: F I G U R Ementioning

confidence: 99%

Differences in the genetic structure between and within two landlocked Ayu groups with different migration patterns in Lake Biwa revealed by environmental DNA analysis

et al. 2022

View full text Add to dashboard Cite

Ayu (Plecoglossus altivelis) is largely an annual amphidromous fish, although a landlocked population lives in Lake Biwa, the largest lake in Japan. The landlocked population comprises two migrant groups, spring migrants and autumn migrants, which run to inlet rivers from the lake at different seasons. We used environmental DNA (eDNA) analysis, which is reported to be more sensitive and cost‐effective than capture surveys, to clarify the genetic structure of this landlocked Ayu population with different migration patterns in Lake Biwa. We took water samples in 11 inlet rivers in the spring and autumn for 2 years in a row and quantitatively detected a total of 265 haplotypes of the mitochondrial D‐loop region. The pairwise fixation index (FST) value and haplotype diversity indicated that there were genetic differences between the two migrant groups in their respective rivers, and the FST values were negatively related to latitude and the presence of artificial fish stocking. Additionally, isolation by distance within spring migrant group was observed when the lake was divided into the east and west sides. These findings show that the landlocked Ayu population in Lake Biwa has genetic structure associated with migration patterns and geographical distance. This study demonstrates that the eDNA approach will be effective for conducting a large‐scale investigation of genetic structure beyond simple presence/absence tests.

show abstract

Section: F I G U R Ementioning

confidence: 99%

Differences in the genetic structure between and within two landlocked Ayu groups with different migration patterns in Lake Biwa revealed by environmental DNA analysis

et al. 2022

View full text Add to dashboard Cite

show abstract

“…However, at least in the present case, the statistics can be regarded as those based on a large sample size because the population size in each river was sufficiently large (at least hundreds or thousands individuals; cf. Sakai, 2010Sakai, , 2011 and eDNA could have captured haplotypes from the whole population. Also, a simulation analysis by scaling down the sample size of each to 2000, 1000 and 500 confirmed that the FST values were still significant in most cases even for the smallest FST between spring and autumn migrants (7-CN; Table S6).…”

Section: The Genetic Differences Between the Two Migrant Groupsmentioning

confidence: 99%

Differences in the genetic structure between and within two landlocked Ayu groups with different migration patterns in Lake Biwa revealed by environmental DNA analysis

Tsuji

Shibata

Sawada

et al. 2022

Preprint

View full text Add to dashboard Cite

Ayu, Plecoglossus altivelis, is largely an annual amphidromous fish, although a landlocked population lives in Lake Biwa, the largest lake in Japan. The landlocked population comprises two migrant groups, spring migrants and autumn migrants, which run to inlet rivers from the lake at different seasons. We used environmental DNA (eDNA) analysis, which is reported to be more sensitive and cost-effective than capture surveys, to clarify the genetic structure of this landlocked Ayu population with different migration patterns in Lake Biwa. We took water samples in 11 inlet rivers in the spring and autumn for two years in a row and quantitatively detected a total of 265 haplotypes of the mitochondrial D-loop region. The pairwise fixation index (FST) value and haplotype diversity indicated that there were genetic differences between the two migrant groups in their respective rivers, and the FST values were negatively related to latitude and the presence of artificial fish release. Additionally, the isolation by distance within each migrant group was observed when the lake was divided into the east and west sides. These findings show that the landlocked Ayu population in Lake Biwa has the genetic structure associated with migration patterns and geographical distance. This study demonstrates that the eDNA approach will be effective for conducting a large-scale investigation of genetic structure beyond simple presence/absence tests.

show abstract

Distribution of amphidromous and landlocked forms of ayu <i>Plecoglossus altivelis</i> in the Yodo River system

Yamada

Taniguchi

Omi

et al. 2021

NSUGAF

View full text Add to dashboard Cite

Forecast of the first ascending day and number of ascending ayu Plecoglossus altivelis altivelis in rivers flowing into Lake Biwa

Cited by 3 publications

References 10 publications

Differences in the genetic structure between and within two landlocked Ayu groups with different migration patterns in Lake Biwa revealed by environmental DNA analysis

Differences in the genetic structure between and within two landlocked Ayu groups with different migration patterns in Lake Biwa revealed by environmental DNA analysis

Differences in the genetic structure between and within two landlocked Ayu groups with different migration patterns in Lake Biwa revealed by environmental DNA analysis

Distribution of amphidromous and landlocked forms of ayu <i>Plecoglossus altivelis</i> in the Yodo River system

Contact Info

Product

Resources

About