Aquatic Biology | |
Population size of the jumbo squid Dosidicus gigas in the central Gulf of California, Mexico, based on mark-recapture data | |
Juan Gabriel Díaz-Uribe1  Manuel O. Nevárez-Martínez1  Enrique Morales-Bojórquez1  Agustín Hernández-Herrera1  | |
关键词: Binomial distribution; Likelihood estimator; Mark-recapture; Population size; Dosidicus gigas; | |
DOI : 10.3354/ab00406 | |
学科分类:生物科学(综合) | |
来源: Inter-Research | |
【 摘 要 】
ABSTRACT: The use of mark-recapture data can be an alternative to other methods for estimating abundance of the jumbo squid Dosidicus gigas and can be used when catch-per-unit-effort data applied to depletion models or estimates from survey research are not available. Two mark-recapture events were analyzed in the central Gulf of California, Mexico, during October 2001 and April 2002 to assess the status of jumbo squid. Results from October 2001 yielded a population size of 20.2 million squid with a 95% CI of 16 to 26.5 million squid (p < 0.05). In April the population size was estimated at 132.6 million squid with a 95% CI of 85.5 to 222 million squid (p < 0.05). The results for October and April show 2 different periods of abundance. Estimates of tag return rates were higher in April (5.5%) than in October (1.7%), and recruitment is the most plausible explanation. In the Gulf of California, recruitment of jumbo squid commonly occurs during April and May.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201911300677708ZK.pdf | 177KB | download |