Population dynamics of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862) (Decapoda: Penaeidae) in the coastal region of Cananéia, extreme South of São Paulo State: scientific support for shrimp closed season

• Grant number: 12/14874-0
• Support Opportunities: Scholarships in Brazil - Master
• Start date: October 01, 2012
• End date: July 31, 2014
• Field of knowledge: Biological Sciences - Zoology - Morphology of Recent Groups
• Principal Investigator: Rogério Caetano da Costa
• Grantee: Ana Paula Freitas dos Santos
• Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil
• Associated research grant: 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), AP.BTA.TEM

Abstract

Reproductive period, juvenile recruitment, maturity, sexual ratio, individual growth and longevity of Xiphopenaeus kroyeri will be investigated. Monthly samples will be carried out from July/12 to June/2013, in the region of Cananéia, SP, using a commercial fish boat supplied with a trawl bottom net. Sampling effort will be 30 minutes/trawling. Environmental factors, such as bottom and surface temperature and salinity, clorophyll-a and dissolved oxygen, will be monitored. Shrimps will be quantified at each station and sampled month, measured in relation to carapace length (mm) and identified in relation to sex and gonadal stage. Sexual maturity will be analyzed by CL50%, and the reproductive period will be based on the frequency of females with mature gonads throughout an annual cycle. Recruitment will be investigated in the face of the analysis of size class monthly distribution for both sexes. Sex ratio will be examined among months and sampled stations. Individual growth will be estimated by monitoring modal progression (AJMOD) and longevity by Bertalanffy equation. Besides, it will be verified if the proposed offseason, based on juvenile recruitment, is in accordance for the studied species. It is expected that, with this study, a more detailed comprehension of life dynamics and conservation of this important fishery resource of southern coast of São Paulo. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

LIZANDRA FERNANDES MIAZAKI; ANA PAULA FREITAS DOS SANTOS; DALILLA DA SILVA SALVATI; FERNANDA ANTUNES ALVES-COSTA; ROGÉRIO CAETANO DA COSTA. Temporal variations in biomass and size of seabob shrimp Xiphopenaeus kroyeri (Heller, 1862) (Decapoda: Penaeoidea) on the southern coast of São Paulo state, Brazil. Nauplius, v. 24, 2016-12-08. (15/20382-0, 10/50188-8, 15/15210-6, 12/14874-0)

FREITAS DOS SANTOS, ANA PAULA; SIMOES, SABRINA MORILHAS; BOCHINI, GABRIEL LUCAS; COSTA, CINTHIA HELENA; DA COSTA, ROGERIO CAETANO. Population parameters and the relationships between environmental factors and abundance of the Acetes americanus shrimp (Dendrobranchiata: Sergestidae) near a coastal upwelling region of Brazil. Brazilian Journal of Oceanography, v. 63, n. 3, p. 229-238, JUL-SEP 2015. (14/01632-3, 12/14874-0, 10/50188-8, 09/54672-4)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SANTOS, Ana Paula Freitas dos. Dinâmica populacional do camarão sete-barbas Xiphopenaeus kroyeri (Heller, 1862) (Decapoda: Penaeidae) na região costeira de Cananéia, extremo sul do estado de São Paulo: subsídios científicos para adequação do período de defeso. 2014. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Ciências e Letras. Assis Assis.