Banca de QUALIFICAÇÃO: DANIELA ANDRADE DE MELO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : DANIELA ANDRADE DE MELO
DATE: 24/08/2023
TIME: 08:30
LOCAL: Remoto - meet.google.com/qbp-koin-nat
TITLE:

POPULATION STRUCTURE AND SEXUAL MATURITY OF THE UÇÁ CRAB, Ucides cordatus (LINNAEUS, 1763) (BRACHYURA: UCIDIDAE) IN THE DISTRICT OF ACUPE, MUNICIPALITY OF SANTO AMARO-BA

KEY WORDS:

U. cordatus, reproduction, morphological maturity

PAGES: 36
BIG AREA: Ciências Biológicas
AREA: Ecologia
SUMMARY:

The crab, Ucides cordatus, is a semi-terrestrial species prevalent in mangrove areas. The species is found along the west coast of the Atlantic Ocean, from Florida (USA) to the state of Santa Catarina, in Brazil. According to Ordinance No. 034 of June 24, 2003, it is prohibited at any time, the capture, collection, transport, processing, industrialization and marketing of any individual of the species, U. cordatus whose carapace width is less than 6.0 cm (six centimeters). The present study proposes to evaluate population parameters such as: average size, sex ratio and sexual maturity of U. cordatus crabs. The collections were carried out between December 2018 and November 2019, using the "bracing" technique, in the district of Acupe, municipality of Santo Amaro - BA. After the collections, the individuals were packed in plastic bags, labeled and stored in thermal boxes and transported alive to the laboratory, where they were weighed, frozen and later sexual identification and biometry were performed. For relative growth analysis, the following measurements were established: carapace width (CL), carapace length (CL), right chelipod length (RCL), right chelipod height (RQH), left chelipod length (LCL), left chelipod height (LCH) and abdomen height (AB). A total of 298 specimens of Ucides cordatus were collected, 219 (73.48%) males and 79 (26.51%) females. When comparing the slopes of the regression line of juveniles and adults, significant values were observed for the relationships, LC x CQM and LC x CQm for males and LC x AB and LC x CQM for females. Males showed sexual morphological maturation from 54.55 mm, for the variables LC x CQM and 55.95 mm for the variables LC x CQm, showing that 50% of the population are able to reproduce with an average of 55.25 mm of carapace. For females, sexual morphological maturation occurred from 49.97 mm for LC x CQM and 50.74 mm for the variables LC x AB, showing that 50% of the females are fit to reproduce from 50.35 mm of carapace. Therefore, it is concluded that the legislation has presented great importance for the maintenance of the species, since by respecting the minimum capture size, 6 cm, the individuals of U. cordatus, have already reproduced at least once.

COMMITTEE MEMBERS:
Presidente - 1217728 - FABRICIO LOPES DE CARVALHO
Externo à Instituição - RÉGIS AUGUSTO PESCINELLI
Externo à Instituição - MOARCY SERAFIM JUNIOR
Externo à Instituição - LUCAS REZENDE PENIDO PASCHOAL
Externo à Instituição - RAFAEL DE CARVALHO SANTOS