From February to May 2008, a study measured sexual maturity and steroid hormone levels in 105 female kutum fish from the Sefid-Rood river. The research, conducted by Saeed Shafiei Sabet, used histological and radioimmunoassay methods to track changes in gonadosomatic index (GSI), estradiol (E2), and testosterone (T) levels throughout the spawning season. Results showed hormone levels peaked in March and early April, correlating with the highest GSI values.
Use Cases
- Modeling the relationship between gonadosomatic index (GSI) and steroid hormone levels based on the described correlation.
- Analyzing seasonal patterns of estradiol and testosterone in fish during spawning based on the monthly measurements.
- Comparing hormone profiles across different stages of sexual maturity (e.g., stage IV vs. stages II/III) as indicated in the study.
Strengths
- Study includes measurements from 105 fish specimens.
- Provides specific hormone level measurements (e.g., 105.6 ± 75.3 ng/ml for E2) and GSI values (e.g., 29.47 ± 4.2).
- Covers a defined temporal range from February to May 2008.
- Uses established methods: histological analysis and radioimmunoassay.
Limitations
- Row count and column-level documentation are absent; field semantics must be inferred after download.
- Data may reflect geographic and temporal bias inherent to a single study from 2008.
- Last update date is unknown; freshness unverified.
Provenance
- Source
- Saeed Shafiei Sabet
- Collection Method
- Data likely gathered via histological examination and radioimmunoassay of fish samples.
- Time Range
- February to May 2008
- Geography
- Sefid-Rood river, southern Caspian Sea