Spatial-Temporal Distribution of the Burrowing ShrimpCallichirus major(Say, 1818) (Decapoda, Callichiridae) in Preserved Populations of Southeastern Brazil

Author(s)

Laurino, Ivan Rodrigo Abrao ^{[1, 2]} ; Buchmann, Francisco Sekiguchi ^[1] ; Hernaez, Patricio ^[3]

Affiliation

^[1] Univ Estadual Paulista UNESP, Inst Biociencias IB, Lab Estratig & Paleontol, Praca Infante Dom Henr, Campus Litoral Paulista CLP, S-N Parque Bitaru, BR-11330900 Sao Vicente, SP - Brazil

^[2] Univ Sao Paulo, Inst Oceanog IO, Lab Manejo Ecol & Conservacao Marinha, Praca Oceanog, 191, Cidade Univ, BR-05508120 Sao Paulo, SP - Brazil

^[3] Univ Tarapaca UTA, Fac Ciencias, Ctr Estudios Marinos & Limnol, Av Gen Velasquez 1775, Arica - Chile

• Document type: Journal article
• Source: THALASSAS; v. 36, n. 2 AUG 2020.
• Web of Science Citations: 0

Abstract

The understanding of the processes that regulates the distribution of the resident macroinfauna on sandy beaches is an urgent need at the current global change scenario. Here, we examine whether the spatial-temporal distribution of the burrowing shrimpCallichirus major(Callichiridae) is affected by the climatic and tidal regimes in two sandy beaches of Brazil (Jose de Menino and Itaguare), where is totally prohibited the capture of this species. To this end, we counted shrimp burrows across transects plotted perpendicular to the water line. We found thatC. majorhad a non-random pattern of distribution with dense aggregations of burrows near to the low-tide line. Burrow density and distribution ofC. majordid not differ across the annual cycle, not following the remarkably environmental seasonality of the southeastern region of Brazil. However, both population parameters were adversely affected whenC. majorwas subject to a high tidal variability. Also, the probability ofC. majorbuilds a gallery in intertidal habitats is greater on beaches with very fine sand and low variability of tide amplitude than on beaches with coarser sediments and greater tidal dynamics. Our results point to survival ofC. majoris not seriously compromised by temperature and precipitation variations, but rather by eventual changes in the tidal regime and sediments. Considering the current scenario of climate change, we argue in favor ofC. majormay be a good biological model to assess the potential impact of tidal flooding connected to the sea level rise and erosion on coastal habitats. (AU)

• FAPESP's process: 11/09627-0 - COMPARISON BETWEEN THE DENSITY POPULATION OF Callichirus major (Say, 1818) AT JOSÉ MENINO (SANTOS, SP) AND ITAGUARÉ BEACH (BERTIOGA, SP)
• Grantee: Ivan Rodrigo Abrão Laurino
• Support Opportunities: Scholarships in Brazil - Scientific Initiation