Temporal variations in biomass and size of seabob shrimp Xiphopenaeus kroyeri (Heller, 1862) (Decapoda: Penaeoidea) on the southern coast of Sao Paulo state, Brazil

Author(s)

Miazaki, Lizandra Fernandes ^[1] ; Freitas dos Santos, Ana Paula ^[1] ; Salvati, Dahlia da Silva ^[1] ; Alves-Costa, Fernanda Antunes ^[2] ; da Costa, Rogerio Caetano ^[1]

Affiliation

^[1] Univ Estadual Paulista UNESP, Lab Biol & Ecol Camaroes Marinhos & Agua Doce LAB, Fac Ciencias, Dept Ciencias Biol, Ave Engn Luiz Edmund Carrijo Coube 14-01, BR-17033360 Bauru, SP - Brazil

^[2] Univ Paulista UNIP, Inst Ciencias Saude, Rua Luiz Levorato 2-140, BR-17048290 Bauru, SP - Brazil

• Document type: Journal article
• Source: Nauplius; v. 24, p. -, 2016.
• Web of Science Citations: 1

Abstract

Abstract Xiphopenaeus kroyeri (Heller, 1862) is the third most common species caught by fishing boats in the state of São Paulo, Brazil and production of this shrimp in the Cananéia region located on the southern coast of this state ranks second in the nation. The aim of this study was to investigate the temporal variation of the total biomass and size of X. kroyeri and analyze this variation against environmental factors in order to suggest some information about the best periods to fish this species. Samples were caught monthly from four sampling stations in Cananéia between July 2012 and June 2014 using a fishing boat equipped with otter-trawl nets. Temperature and salinity were monitored using a multiparameter probe, and sediment samples were also taken using a Van Veen-type gripper for particle size analysis. The shrimp were weighed, quantified, and carapace length was measured (mm). In general, the highest total biomass values were recorded when the fishery was closed in the southeast and south regions, and the highest catch of smaller individuals was also observed during this period. In contrast, in November 2013 the fishing is permitted and high biomass composed of large individuals was observed. The monthly biomass showed a positive relationship with sediment texture, because this species prefers very fine sediments to burrow as a defense against predators. (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 type: BIOTA-FAPESP Program - Thematic Grants
• FAPESP's process: 15/15210-6 - Distribution and population dynamics of juvenile prawns Farfantepenaeus brasiliensis (Latreille, 1817) and f. paulensis (Pérez Farfante, 1967) in the Cananéia region, extreme south of the State of São Paulo
• Grantee: Dalilla da Silva Salvati
• Support type: Scholarships in Brazil - Master
• FAPESP's process: 15/20382-0 - Population dynamics crab Hepatus pudibundus (Herbst, 1785) (Crustacea, Decapoda: Aethridae) in the region of Cananéia, extreme south of Sao Paulo, Brazil
• Grantee: Lizandra Fernandes Miazaki
• Support type: Scholarships in Brazil - Master
• FAPESP's process: 12/14874-0 - 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
• Grantee: Ana Paula Freitas dos Santos
• Support type: Scholarships in Brazil - Master