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Sex-specific differences in the growth and population characteristics of Sand crab Ovalipes punctatus (De Haan, 1833) in coastal waters of Korea.
Lee, Hyeon Gyu; Jeong, Jae Mook; Choi, Youn Hee.
Afiliación
  • Lee HG; Fisheries Resources Research Center, National Institute of Fisheries Science, Tongyeong, 56034, Korea.
  • Jeong JM; Division of Fisheries Life Sciences, Pukyong National University, Busan, 48513, Korea.
  • Choi YH; Fisheries Resources Research Center, National Institute of Fisheries Science, Tongyeong, 56034, Korea.
Sci Rep ; 14(1): 20137, 2024 08 29.
Article en En | MEDLINE | ID: mdl-39209923
ABSTRACT
The sex-specific differences in the growth and population characteristics of the high-commercial-value sand crab Ovalipes punctatus were investigated in Korea. The estimated allometric growth between the sexes showed significant differences in all morphometric measurements. In the classification of growth types, carapace width-chela length exhibited positive and negative allometric growth in males and females, respectively. Carapace width-abdominal width showed positive relative growth in both sexes, and orbital spine width exhibited negative relative growth in both sexes. Consequently, sexual dimorphism was evident in all measured traits. Growth parameters estimated using the ELEFAN function of the FiSAT II program indicated higher values in males compared to females. Asymptotic length (CW∞) for males was estimated at 139.2 mm, whereas for females it was 116.6 mm. Additionally, the growth coefficient (K) was higher in males (0.65) than in females (0.54), suggesting faster growth in males. The winter point (WP) was 1 for males and 0.7 for females, indicating slower growth in males during the colder December and slower growth in females during the spawning period in August. The modified von Bertalanffy growth curves indicated asymptotic growth in all sexes, and the growth performance index (φ') showed higher values in males (4.10) compared to females (3.87), reflecting differences in growth curves. The steady increase in recruitment rates from July to September was associated with the appearance of larvae and their subsequent growth into juveniles, leading to their recruitment into the population during this period. Therefore, O. punctatus exhibited sex-specific differences in growth parameters, suggesting distinct growth strategies between the sexes.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Caracteres Sexuales Límite: Animals País/Región como asunto: Asia Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Caracteres Sexuales Límite: Animals País/Región como asunto: Asia Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido