| Full text | |
| Author(s): |
Perroca, Julia Fernandes
;
Herrera, Daphine Ramiro
;
Castilho, Antonio Leao
;
da Costa, Rogerio Caetano
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Nauplius; v. 28, p. 11-pg., 2020-03-16. |
| Abstract | |
This study investigated the population dynamics of Persephona punctata with emphasis on population structure, sex-ratio, spatial distribution, maturity and reproductive period. Crabs and environmental factors (i.e., water temperature and salinity, and sediment texture and organic matter content) were collected monthly, from July 2012 to June 2014 in four sites within the Federal Environmental Protection Area of Cananeia-Iguape-Peruibe: located in the oceanic area adjacent to the Cananeia region. The population had a female-biased sex-ratio. Persephona punctata had a seasonal reproduction and the higher percentage of ovigerous females (OF) occurred in spring and summer. There was a positive correlation ("lag 0") between temperature and number of OF (cross-correlation, p < 0.05) and a negative correlation between salinity and OF ("lag-2"), suggesting that periods of higher salinity may be favorable to larval hatching. The estimated size (carapace width - CW50) at the onset of gonadal maturity of males (35.0 mm) was larger than that of females (30.1 mm), which is a common feature of Brachyura. Our results extend the knowledge on the life history of P. punctata and may be useful for the development of future mitigation measures aimed at its conservation. (AU) | |
| FAPESP's process: | 10/50188-8 - Decapod crustaceans: multi-disciplinary characterization of the sea biodiversity of the State of São Paulo (taxonomy, spermiotaxonomy, molecular biology and population dynamics) |
| Grantee: | Fernando Luis Medina Mantelatto |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |
| FAPESP's process: | 18/13685-5 - Integrative analysis of the Brazilian fauna of decapod crustaceans: taxonomy, phylogenetic systematics, spermiotaxonomy, morphology of post-embryonic development, ecology and conservation |
| Grantee: | Fernando Luis Medina Mantelatto |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |
| FAPESP's process: | 14/27210-8 - Spatial-temporal distribution and abundance of two species within the genus Persephona (Decapoda: Brachyura: Leucosiidae) in Cananéia region, on the southern coast of São Paulo State |
| Grantee: | Júlia Fernandes Perroca |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |