Parrotfish sex ratios recover rapidly in Bermuda following a fishing ban
| Autor: | Shay O’Farrell, Brian E. Luckhurst, Stephen J. Box, Peter J. Mumby |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
Herbivore geography geography.geographical_feature_category biology Overfishing Ecology 010604 marine biology & hydrobiology Fishing Hermatypic coral Coral reef Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Fishery Grazing Parrotfish Reef |
| Zdroj: | Coral Reefs. 35:421-425 |
| ISSN: | 1432-0975 0722-4028 |
| DOI: | 10.1007/s00338-015-1389-5 |
| Popis: | Parrotfishes are an ecologically and commercially important teleost group whose grazing contributes to maintaining coral-dominated states on hermatypic reefs. However, overfishing has skewed sex ratios of Atlantic parrotfishes because fishing has disproportionate impacts on larger individuals, and males are generally larger than females. Whether protection from fishing may allow sex ratios to return to equilibrium is unknown, as fishing can induce irreversible ecological and/or evolutionary shifts. Bermuda banned trap fishing in 1990, creating a unique opportunity to analyse long-term responses of Atlantic parrotfishes to release from fishing. We found that sex ratios of four common parrotfishes were initially skewed, with male proportions ranging from 0.04 to 0.18. However, male proportions rebounded within 3–4 yr, equilibrating at values ranging from 0.36 to 0.54, similar to those reported at unfished sites in the region. Our results are encouraging for regional efforts to recover lost grazing function by restoring overfished herbivore populations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink