Densidade e estrutura populacional do camarão-fantasma Callichirus corruptus (Hernáez, Miranda, Rio & Pinheiro, 2022) (Crustacea, Axiidea, Callichiridae) na praia da Conceição, Paulista - PE após um derramamento de petróleo

Abstract

During 2019, oil slicks were observed on beaches on the coast of the Northeast region of Brazil and reached about a thousand kilometers off the Brazilian coast. The stains contaminated beaches, estuaries, reefs and mangroves and reached several organisms. This substance is capable of causing high mortality, decreased density and changes in the structure of marine communities. The crustaceans of the infraorder Axiidea, known as ghost shrimp, are burrowing marine organisms, considered important ecosystem engineers and widely used as bait for fishing. The study aimed to analyze the density and population structure of Callichirus corruptus on an oil-impacted beach in Pernambuco, in addition to comparing it with previous studies carried out in the area. Collections were carried out in the months of October/2020, December/2020, May/2021, February/2022, June/2022 and August/2022. The population density of C. corruptus on Conceição beach ranged from 0 to 28 ind/m², with an average density of 6.41 ind/m². Altogether 111 individuals were collected, 28 males and 83 females and 29 of them were ovigerous. The sex ratio was significantly biased towards females. Most individuals had an DO length of 10 to 13 mm, with significant differences between the sexes. For CP and LP There were no significant differences between males and females. The average fecundity was 3844.11 eggs. The present study brought new information from the population of Conceição beach and found that the 2019 oil spill may have caused a decrease in the number of individuals in the population. In view of this, we emphasize the importance of this and other studies related to environmental impacts to which burrowing shrimp are susceptible, as well as encouraging the continuity of research with ghost shrimp.