Data/hora: 11/06/2024 05:20:18

Provedor de dados: 	3	
País: 	Brazil	
Título: 	Growth parameters of the invasive gastropod Melanoides tuberculata (Müller, 1774) (Gastropoda, Thiaridae) in a semi-arid region, Northeastern Brazil	
Autores: 	Oliveira, Cicero Diogo Lins; Oliveira, Carlos Yure Barbosa de.	
Data: 	2019-07-22	
Ano: 	2019	
Palavras-chave: 	Invasive mollusk; Population structure; Growth curve. Zoologia.	
Resumo: 	Melanoides tuberculata has invaded several aquatic ecosystems in the Neotropical region. This species shows high adaptive capacity and plasticity, establishing itself in several basins, promoting negative impacts on environments and native species. Here, we determine the growth parameters and the population structure of this species, in a semi-arid environment, in Northeast Brazil (Pernambuco state). Monthly captures were conducted at three types of substrate: site 1: soft bottom with macrophytes, site 2: soft bottom without macrophytes, and site 3: gravel and rocks. Shells were classified as occupied or empty, and their shell length (SL) and opening width (SW) were measured. The growth parameters of the von Bertalanffy’s model were estimated from the size-length frequency distribution using the ELEFAN I. Also, the maturity was verified, through the size at onset of maturity (SOM - 14.85 mm SL) proposed in the literature. A total of 1,013 individuals were collected, with shells varying from 7 to 39 mm SL and mean density of 84.42 (± 3.86) individuals m-2. The substrate with the largest number of mollusks was the site 1. Largest amount of empty shells was detected at site 3. Growth of M. tuberculata indicates rapid increment, with k = 0.56, L∞ = 42 mm and t0 = -0.26 years. The mean estimated age for the species was 0.95 years. According to the SOM, 86% of individuals sampled were considered mature.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/45720

10.4025/actascibiolsci.v41i1.45720	
Editor: 	Universidade Estadual De Maringá	
Relação: 	http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/45720/pdf	
Formato: 	application/pdf	
Fonte: 	Acta Scientiarum. Biological Sciences; v. 41 (2019): Publicação contínua; e45720

Acta Scientiarum. Biological Sciences; v. 41 (2019): Publicação contínua; e45720

1807-863X

1679-9283	
Fonte: 	Direitos autorais 2019 Acta Scientiarum. Biological Sciences

http://creativecommons.org/licenses/by/4.0