Program, Project, or Expedition Name:
Peer Reviewed Publication from Keala Pelekai’s MS degree at Oregon State University in Fisheries
Data Link: https://github.com/millerjessicaadele/Pelekaietal2023.Statoliths
| Institution | LMRCSC, OSU |
| Principal Investigator | Jessica Miller | jessica.miller@oregonstate.edu | (541) 867-0420 |
| Funding Agency/Contract # | National Oceanic and Atmospheric Administration, Office of Education Educational Partnership Program award number (NA16SEC4810007) |
| Collection Start Date | 2019 |
| Objectives of Data Collection Effort | Our objective were to describe the morphology of Pacific Lamprey statoliths throughout their ontogeny, which we define here in four stages: larva, freshwater juvenile, marine juvenile, and adult. We use the terms “larva” (the eyeless, filter-feeding, freshwater life stage) and “juvenile” (the eyed, parasitic, postmetamorphic life stage) as in Clemens (2019). However, we differentiate between “prefeeding freshwater juveniles,” which are migrating downstream prior to ocean entry, and “marine juveniles,” which occupy marine waters. Specifically, we compared four statolith morphometrics across life stages to evaluate the structure’s size and shape over time. Additionally, through band interpretation and morphometrics, we evaluated the efficacy of the structure for age determination by using known-age artificially propagated samples and parentage-based tagging (PBT) wild samples. |
| Collection End Date | 2023 |
| Data Collectors Identifying Numbers | N/A |
| Ship or Other Platform Name | N/A |
| Geographic Location [Latitude(s)/longitude(s)] | N/A |
| Units | microns and millimeters |
| Data Parameters | stage for sample: larval or FW (freshwater) juvenile; origin of sample, collected in the field (Wild) or hatchery; total length of lamprey in centimeters; total age of lamprey in years; tank at hatchery where sample was collected; river of origin for the lamprey; condition of the statolith: 1 = excellent; 2 = good; and 3 = damaged; mass of statolith in milligrams; area of statolith in millimeters; area of statolith in microns; length of statolith in millimeters; length of statolith in microns; width of statolith in millimeters; width of statolith in microns; perimeter of statolith in millimeters; perimeter of statolith in microns; mean radius of statolith in millimeters; mean radius of statolith in microns |
| Precision | variable |
| Observation Methodology | Hatchery and field collections followed with statolith measurement and interpretation in the lab. |
| Instrument/Gear Identification of Description | small hand nets. |
| Analysis Methodology | Random Forest and linear models. |
| Data Processing/ Reduction Methodology | Data were entered with MS Excel and analyzed with R and RStudio. |
| Explanations of Data Quality Flags | N/A |
| Citations of Relevant Publications and Grey Literature | Pelekai, K. N., Hess, J. E. , Weitkamp, L. A., Lampman, R. T., Miller, J. A. Evaluation of Pacific Lamprey statoliths for age estimation across their life cycle, North American Journal of Fisheries Management, Volume 43, Issue 6, December 2023, Pages 1610–1622, https://doi.org/10.1002/nafm.10920 |
