Navegando por Autor "Carvalho, Mônica Lúcia Botter"

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Biologia reprodutiva de Neocallichirus maryae Karasawa, 2004 (Crustacea, Decapoda, Callichiridae) na praia de Mangue Seco, Igarassu, Pernambuco, Brasil
(2020-01-27) Matoso, Marcos Antonio Lima; Carvalho, Mônica Lúcia Botter; Costa, Larissa Bacelar da; http://lattes.cnpq.br/6227388035808608; http://lattes.cnpq.br/1762304533046987; http://lattes.cnpq.br/4408208899837080
The present work aims to study the reproductive biology of the ghost shrimp Neocallichirus maryae Karasawa, 2004, on the Mangue Seco beach, north coast of Pernambuco. Thus, intending to contribute with unprecedented information to fill this gap. Collections were carried out, monthly, at Mangue Seco beach during low tide, between September 2018 and October 2019. The females were collected using a manual suction pump and sieves. In the laboratory, the abundance of ovigerous females (OF) in relation to non-ovigerous females, the length of the cephalothorax (CF), size of sexual maturation, reproductive period, embryonic development stage, fecundity, egg volume and reproductive effort (RE) were analyzed. A total of 358 females were collected, 48 OF and 301 non-ovigerous females. The CF of non-ovigerous females ranged from 5.98 mm to 17.97 mm with an average of 13 mm (± 1.976), however for OF the measures ranged from 9.37 mm to 16.48 mm with 13.34 (± 1.970); defining the size of the sexual maturity as the FC measurements between 9mm and 9.5mm. The occurrence of reproductive period was observed during the dry season (between December / 2018 to March / 2019), which is expected as a standard for decapods. The 3 stages of embryonic development were found during the reproductive period. Fertility ranged from 1057 to 3784, with an average of 2001.4 ± 815.04. The number of eggs increased significantly following the size of the females. The average egg volume was 0.157 mm³ (± 0.021) for stage I, 0.091mm³ (± 0.038) for stage II and 0.065 mm³ (± 0.026) for stage III. The average ER was 0.0601 ± 0.241. With dry weight of the egg mass representing only 0.78% of the dry weight of the females. The aspects about reproductive biology studied for the population of N. maryae follow similar patterns to the other studies done for the group of ghost shrimp worldwide. Finally, this study brings new information about Neocallichirus maryae, filling in some gaps and enabling future research on the species.
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
(2022-10-14) Silva, Wyllyane Gonçalves da; Carvalho, Mônica Lúcia Botter; Matoso, Marcos Antonio Lima; http://lattes.cnpq.br/4408208899837080; http://lattes.cnpq.br/1762304533046987; http://lattes.cnpq.br/2812513561673893
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.
Dinâmica populacional do camarão escavador Neocallichirus maryae Karasawa, 2004 na Praia de Mangue Seco, Igarassu - PE
(2022-10-14) Albuquerque, Maria Eduarda Kusuky de; Carvalho, Mônica Lúcia Botter; http://lattes.cnpq.br/1762304533046987; http://lattes.cnpq.br/5973917912934823
The aim of this study is provide the first informations about the population structure and relative growth of the species, on a beach of north coast of Pernambuco. The samples were made with help of a “yabby pump”, between September 2018 and October 2019. The specimens were mensured about the Cephalotorax Lenght (CF), Total Length (CT), Major Propodus Cheliped Lenght (CP), Major Propodus Width (LP), Major Propodus Height (AP), Major Carpus Cheliped Lenght (CC) and Major Carpus Cheliped Height (AC). A total of 559 individuals were collected, 219 males and 358 females, where 46 were ovigerous. The sexual maturity was reached at A maturidade sexual 9mm of CF for both sexes. Only for the general population and between adults the sex ratio was significantly female-biased (p<0,0001). The smallest ovigerous female presented A 9,37 mm of CF and the biggest presented 16,48 mm of CF. The major and minor collected animal were females. The most part of ovigerous females (36 specimens) carried uneyed embryos. For both sexes, the analyses of relative growth showed positive allometry for the relationships CFxCP, CFxLP, CFxAP and CFxAC. For the relationship CFxCC, females presented negative allometry and males presented positive allometry. Both sexes presented isometry for the relationship CFxCT. The female-biased sex ratio may have been due to the fact that they are positioned in more superficial layers of sediment for oxigenation of the egg mass, corroborating with the peak of ovigerous females collected. We emphasize the uniqueness of the findings, highlighting the relevance of results to fill the large gap of knowledge about the species.
Lista dos crustáceos decápodos coletados na zona recifal da praia do Janga - PE
(1998) Carvalho, Paulo Vladmir Van Den Berg da Costa; Porto, Marilena Ramos; Carvalho, Mônica Lúcia Botter
É registrada a ocorrência de 61 espécies pertencentes a 2 subordens, 7 infraordens, 17 familias e 39 gêneros, à partir da análise de 1130 exemplares. O material foi proveniente de coletas manuais costeiras realizadas no período agosto de 1992 a julho de 1993.
Mudanças na comunidade macrobentônica associada à atividade de bioturbação do camarão Neocallichirus maryae Karasawa, 2004 na Praia de Mangue Seco, Igarassu - PE
(2020-01-27) Brito, Joyce Carina Barbosa; Carvalho, Mônica Lúcia Botter; Marinho, Nidia Cristiane de Mélo; http://lattes.cnpq.br/9994922802609034; http://lattes.cnpq.br/1762304533046987; http://lattes.cnpq.br/4492135358829944
Benthic biodiversity is responsible for providing various ecosystem services to the environment, and from it arises a trophic base that helps maintain these services and the quality of human life. However, several processes can change this dynamic, since the species that inhabit the benthos are sensitive to environmental changes. In this work we will focus on a natural activity that can change the properties of sediments, called bioturbation. It is pointed out as a natural activity that disturbs the environment by disturbing sediment particles in the modeling of their burrows. This process is well studied in terrestrial environments and in other taxonomic groups. However, more research is still needed on the effects of bioturbation carried out in the process of excavation of Axiidea crustaceans in beach environments, areas of great ecological and economic value for the livelihood of riverside families and the like. Thus, the present study aims to evaluate the effects of spatial changes in the macrofauna community associated with the presence of the burrowing shrimp Neocallichirus maryae Karasawa, 2004. The work was carried out on the beach of Mangue Seco, in the municipality of Igarassu, in the north coast of the state. from Pernambuco. We defined four types of treatments between proximity and depth of samples. We collected 7 samples close to the gallery opening (P) and distant from the gallery opening (L), with a distance of 50 cm between them. These samples were divided into two strata: shallow (0-5cm) and deep (5-10 cm). Thus, our treatments were: Near (P) and Far (L) from the opening of galleries. And two stratum levels of the samples: Superficial (0-5 cm) and deep (5-10 cm). We observed differences in abundance between the sample extracts, which were accounted for. We found a total of 149 organisms in total. Which, separated by the respective treatments, were collected: 3 organisms in the Deep treatment (5-10 cm), 71 organisms in the Superficial treatment (0-5 cm), 8 organisms in the Far treatment (L) and 66 organisms in the Near treatment ( P). The presence of shrimp N. maryae demonstrated a direct influence on the composition of the macrofauna, on the treatments close to the gallery of N. maryae and on the superficial areas of the sediment. Which leads us to believe that other factors such as the biotic and abiotic properties of the beach have influenced the distribution of benthic organisms. Further studies are needed to measure how anthropic impacts may have influenced our results and to show the role of ecosystem engineering in burrower shrimp bioturbation activity. This research brings insights on bioturbation related to macrobenthic communities, which can serve as a source for future studies on the effects of bioturbation on benthic organisms, which are still very scarce.
Variação espacial da macrofauna bentônica em uma praia urbanizada no litoral norte de Pernambuco
(2021-07-13) Ximenes, Falber Fado Araújo Pina; Carvalho, Mônica Lúcia Botter; http://lattes.cnpq.br/1762304533046987; http://lattes.cnpq.br/6318894893166992