Coastal zone use and migratory behaviour of the southern population of Mugil liza in Brazil
| Autor: | João Paes Vieira, Valéria M. Lemos, Gian‐Franco Ceni, Paulo R. Schwingel, Ana Cecília Giacometti Mai, Tatiana D. Saint'Pierre, Cristiano Queiroz de Albuquerque |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Population Fresh Water Aquatic Science 010603 evolutionary biology 01 natural sciences Mullet Otolithic Membrane Sexual Behavior Animal Animals Juvenile Seawater education Ecosystem Ecology Evolution Behavior and Systematics Life Cycle Stages education.field_of_study geography geography.geographical_feature_category Brackish water biology Mugil 010604 marine biology & hydrobiology Estuary biology.organism_classification Spawn (biology) Smegmamorpha Fishery Habitat Animal Migration Female Estuaries Brazil |
| Zdroj: | Journal of Fish Biology. 95:1207-1214 |
| ISSN: | 1095-8649 0022-1112 |
| Popis: | We analysed the ratios Sr:Ca and Ba:Ca in the otoliths of 55 adults of the southern population of Mugil liza in Brazil (Paraná to Rio Grande do Sul) to investigate its coastal zone use and migratory behaviour. All individual M. liza analysed had Sr:Ca and Ba:Ca values indicating that their birth was in the marine environment, which is consistent with the southern population migration to spawn in the ocean,. Juveniles exhibited at least three coastal use and recruitment strategies (contingents): the majority (89%) of M. liza juveniles migrated toward brackish water. They entered the estuary before completing the first year of life (64%) or after (25%) their first year of life. The remaining 11% did not appear to enter brackish or freshwater water as a nursery or at any point in their life cycle. Some adults returned to the estuary after spawning in the ocean but others (of both sexes) never returned to the estuary after spawning, remaining in the marine environment. The pattern of juvenile habitat use in the Brazilian southern population of M. liza seems to be recurrent throughout the extent of its distribution as a consequence of the reproductive spawning aggregation behaviour, which mixes all contingents (with marine or estuarine preferences). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text