Lifespan and population dynamics of the endemic South American shrimp Artemesia longinaris (Crustacea: Penaeidae) in southeastern Brazil

Author(s)

Castilho, Antonio L. ^[1] ; Grabowski, Raphael C. ^[1] ; Simoes, Sabrina M. ^[2] ; Santos, Ana Paula F. ^[2] ; Costa, Rogerio C. ^[2] ; Fransozo, Adilson ^[1]

Affiliation

^[1] Univ Estadual Paulista UNESP, NEBECC Nucleo Estudos Biol Ecol & Cult Crustaceos, Dept Zool, Inst Biociencias Botucatu, Dist Rubiao Jr S-N, BR-18618000 Botucatu, SP - Brazil

^[2] Univ Estadual Paulista UNESP, LABCAM Lab Biol Camaroes Marinhos & Agua Doce, Dept Ciencias Biol, Fac Ciencias, BR-17033360 Bauru, SP - Brazil

• Document type: Journal article
• Source: Anais da Academia Brasileira de Ciências; v. 87, n. 4, p. 2123-2138, DEC 2015.
• Web of Science Citations: 3

Abstract

The present study investigated the growth, longevity and reproductive dynamics of Artemesia longinaris in the southeastern coast of Brazil over a two-year period. Monthly collections were conducted in Ubatuba and Caraguatatuba using a shrimp fishing boat equipped with ``double-rig{''} nets. Each region was divided into 7 sampling stations up to 35 m deep. Size frequency distributions, growth, longevity, sex ratio, and abundance of individuals in each demographic class, were compared. The relationship between abiotic factors and abundance of each demographic class was assessed using a Canonical Correlation Analysis. A total of 64,641 individuals were collected (6,928 measured) with an estimated longevity of 1.30 (Ubatuba) and 1.14 (Caraguatatuba) years for females and 1.03 years for males in both regions. There was a statistically significant bias in sex ratio toward females (Chi-squared test, p < 0.05) in both regions. The Canonical Correlation Analysis resulted in a canonical correlation coefficient of 0.31 (p = 0.00002). Salinity and temperature showed high correlation mainly with the presence of reproductive females. In general, this demographic class was most common in conditions of low temperature and high salinity. These findings, as well as other studies carried out in colder regions with the same species, are consistent with classical latitudinal paradigm. (AU)

• FAPESP's process: 98/07090-3 - Benthic marine biodiversity in the state of São Paulo
• Grantee: Antonia Cecília Zacagnini Amaral
• Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
• FAPESP's process: 09/54672-4 - Reproductive biology and dynamic population of the Penaeoidean shrimps (Crustacea, Decapoda) from southeastern Brazilian coast: latitudinal effect and suggestion for fishery control
• Grantee: Rogério Caetano da Costa
• Support Opportunities: Regular Research Grants
• 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