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| Content Provider | Springer Nature Link |
|---|---|
| Author | Sakamoto, Daisuke Nemoto, Takashi Sunoh, Noriyuki Iwasaki, Jun Niwa, Shintaro Arayama, Kazunori Suzuki, Naoki Takagi, Kaori Sakuramoto, Kazumi |
| Copyright Year | 2014 |
| Abstract | We estimated the population size of the pond smelt Hypomesus nipponensis at the beginning of the fishing season in Lake Kasumigaura and Lake Kitaura, Japan using two DeLury methods and cohort analysis. A growth curve was estimated on the basis of monthly standard length. The relationship between standard length and weight was utilized for calculating the mean weight on the survey day in a particular month. Total monthly catches in Lake Kasumigaura and Lake Kitaura were calculated using partial monthly pond smelt catch obtained from processing plants located near the lakes between July and December. The total monthly catch was calculated from the total monthly catch weight and the monthly mean weight. The number of boats operating each month, compiled by the Kasumigaura-Kitaura Fisheries Office of Ibaraki Prefecture, was also employed. The estimated initial population sizes were compared with the population level index (PLI) estimated from survey data before the start of the fishing season. No significant differences were detected among the initial population sizes estimated by DeLury method, cohort analysis and PLI. The estimates ranged from 7.4 million to 410 million in Lake Kasumigaura, and from 7.7 million to 44 million in Lake Kitaura. |
| Starting Page | 907 |
| Ending Page | 914 |
| Page Count | 8 |
| File Format | |
| ISSN | 09199268 |
| Journal | Fisheries Science |
| Volume Number | 80 |
| Issue Number | 5 |
| e-ISSN | 14442906 |
| Language | English |
| Publisher | Springer Japan |
| Publisher Date | 2014-08-12 |
| Publisher Place | Tokyo |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Cohort analysis DeLury method Growth curve Hypomesus nipponensis Lake Kasumigaura Lake Kitaura Pond smelt Population level index Fish & Wildlife Biology & Management Freshwater & Marine Ecology Food Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Aquatic Science |
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