Age, growth, and reproductive biology of the blackfin seabass Lateolabrax latus, a major predator in rocky coastal ecosystems of southwestern Japan

Kunishima, Taiga; Higuchi, Shunsuke; Kawabata, Youhei; Furumitsu, Keisuke; Nakamura, Ippei; Yamaguchi, Atsuko; Tachihara, Katsunori; Tokeshi, Mutsunori; Arakaki, Seiji

doi:10.1016/j.rsma.2020.101597

Cited by 7 publications

(5 citation statements)

References 25 publications

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“…Females in this species exhibited greater body size, with an average total length of 18.23 ± 2.45 cm, compared to males with an average total length of 17.44 ±2.08 cm. This pattern of sexual dimorphism, where females are larger than males, has been observed in other teleosts, such as Gymnocypris firmispinatus ( Ma et al, 2019 ), Lateolabrax latus ( Kunishima et al, 2021 ), and C. ussuriensis ( Wang et al, 2022 ). In this study, the collection of smaller juvenile fish was limited, which may have been caused by the large mesh of fishing nets.…”

Section: Discussionsupporting

confidence: 71%

Age, growth, reproduction and mortality of Xenocypris argentea (Günther,1868) in the lower reaches of the Tangwang River, China

Li,

Liu,

et al. 2024

PeerJ

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To investigate various population biological parameters of Xenocypris argentea in the lower reaches of the Tangwang River (China), a comprehensive study was conducted for the first time. A total of 1,003 samples were collected from April to November 2022. The collected samples revealed that female X. argentea had total lengths ranging from 12.4 cm to 25.7 cm (weighing 15.86 g to 159.55 g), and male X. argentea had total lengths ranging from 10.8 cm to 23.9 cm (weighing 9.27 g to 121.06 g). The age of the samples was determined using otolith analysis, indicating that the ages ranged from 1 to 5 years old in both females and males. The length-weight relationships were further analyzed, uncovering the allometric growth index (b) was 3.1296 for females, indicating a positive allometric growth pattern. Differently, males exhibited a b value of 3.0274, suggesting an isometric growth pattern. Furthermore, the von Bertalanffy growth formula provided insights into the growth characteristics of X. argentea, revealing an asymptotic total length (L∞) of 36.096 cm and a growth coefficient (K) of 0.121. The analysis of the gonadal somatic index (GSI) and ovarian development period indicated that the spawning period occurred from April to July, with peak spawning in June. The study also explored fecundity-related traits, finding that individual absolute fecundity (FA) ranged from 11,364 eggs to 56,377 eggs, while eviscerated body weight relative fecundity (FW) ranged from 209 eggs/g to 823 eggs/g. The exploitation rate (E) for X. argentea was calculated as 0.574, suggesting that the population of X. argentea has been overexploited. By revealing previously unknown data on the key life history traits of X. argentea, this study has provided valuable insights that are crucial for the development of conservation strategies and policies.

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Section: Discussionsupporting

confidence: 71%

Age, growth, reproduction and mortality of Xenocypris argentea (Günther,1868) in the lower reaches of the Tangwang River, China

Li,

Liu,

et al. 2024

PeerJ

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“…Females of this species generally had a larger body size, with an average total length of 13.12 ± 3.76 cm, whereas males had an average total length of 12.29 ± 3.19 cm. The phenomenon of sexual dimorphism, with females being larger than males, has been documented in various teleosts, such as Gymnocypris firmispinatus [ 3 ], Lateolabrax latus [ 16 ], and Coregonus ussuriensis [ 22 ]. Fish age estimation is fundamental in the study of fish biology and ecology [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

“…The study of population characteristics such as age, growth, and mortality in fish is fundamental to fisheries resource assessment and management, as these characteristics are influenced by genetic factors and the natural environment [ 7 , 16 , 17 ]. Prolonged fishing pressures and environmental changes have resulted in variations in species diversity, community structure, and food webs in aquatic ecosystems and have influenced the dynamics of various hydrobios [ 18 – 20 ].…”

Section: Introductionmentioning

confidence: 99%

A comparative study on the age, growth, and mortality of Gobio huanghensis (Luo, Le & Chen, 1977) in the Gansu and Ningxia sections of the upper Yellow River, China

Li,

Liu,

Liu

et al. 2024

BMC Ecol Evo

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Balkground Gobio huanghensis is a small economic fish endemic to the Yellow River at the junction of the Tibetan Plateau and the Huangtu Plateau in China. To understand the impact of environmental changes and human activities on the ecological structure of the G. huanghensis population, a comparative study was conducted on the age composition, growth characteristics, mortality rate, and exploitation rate of the G. huanghensis populations in the Gansu and Ningxia sections of the upper Yellow River. Results During the investigation, a total of 1147 individuals were collected, with 427 individuals collected from the Gansu section and 720 individuals from the Ningxia section. The results showed that G. huanghensis in the Gansu section exhibited a total length ranging from 5.00 to 22.80 cm, with an average of 12.68 ± 4.03 cm. In the Ningxia section, the total length of G. huanghensis ranged from 2.15 to 20.65 cm, with an average of 9.48 ± 3.56 cm. The age composition of G. huanghensis in the Gansu section ranged from 1 to 7 years, where female fish were observed between 1 and 7 years old, and male fish between 1 and 6 years old. In the Ningxia section, both female and male fish ranged from 1 to 5 years old. The relationships between total length and body weight were (Gansu section, R2 = 0.9738) and (Ningxia section, R2 = 0.9686), indicating that fish in the Gansu section exhibit positive allometric growth, while fish in the Ningxia section exhibit negative allometric growth. The von Bertalanffy growth equation revealed that G. huanghensis in the Gansu section exhibited an asymptotic total length L∞ of 27.426 cm with a growth coefficient K of 0.225 yr−1, while in the Ningxia section, the asymptotic total length L∞ was 26.945 cm with a growth coefficient K of 0.263 yr−1. The total mortality rate (Z) values of G. huanghensis were 0.7592 yr and 1.1529 yr in the Gansu section and Ningxia section, respectively. The average natural mortality rate (M), estimated by three different methods, in the Gansu section was 0.4432 yr, while it was 0.5366 yr in the Ningxia section. The exploitation rate (E) of G. huanghensis was 0.4163 in the Gansu section and 0.5345 in the Ningxia section, indicating that the population in the Ningxia section may have been overexploited. Conclusion Prolonged fishing pressures and environmental changes may have led to variations in the ecological parameters of the G. huanghensis population between the Gansu and Ningxia sections.

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“…Thus, these stages of C. whiteleggii were thought to emerge a few days after spawning. The existence of POFs and asynchronous oocyte development indicates that repeated spawning will occur during a reproductive season [49,50], which ensures the production of more eggs and, therefore, juveniles than a single spawning [51]. Species with asynchronous ovarian development require special attention while planning for their sustainable management because such species tend to have a large size-at-age range [52].…”

Section: Discussionmentioning

confidence: 99%

First Report on Reproductive Features of Shadow Driftfish Cubiceps whiteleggii (Perciformes: Nomeidae): An Effort toward Sustainable Management

et al. 2022

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Fish of the Nomeidae family are a significant part of marine food webs and are an emerging fisheries resource. The formulation of sustainable management and conservation strategies is constrained by the lack of comprehensive research on the population biology of any of these species. We, therefore, studied reproductive aspects of Cubiceps whiteleggii as a representative of Nomeidae. We used a biological index (gonadosomatic index), as well as macroscopic (visual observations of the surface and transverse ovary sections) and microscopic analyses, in search of proxies for estimating the ovarian maturity status. Samples were collected from April 2014 to December 2017 in Kagoshima Bay, Japan. Asynchronous ovary development in C. whiteleggii indicated multiple spawning during a single reproductive season. Ovarian maturity stages were divided into six groups based on the appearance of the most advanced oocytes, post-ovulatory follicles, and atretic oocytes: immature, maturing, mature, spawned, spent, and resting. Females with ovaries at mature or spawned stages were defined as sexually mature individuals. The size at 50% sexual maturity was estimated to be 126 mm standard length. The spawning season was estimated to last from July to November. Both biological and macroscopic indices were found unsuitable to be used as independent indices in estimating reproductive aspects requiring scientists and managers to search for better alternatives. The conceptualization of appropriate management protocols for the fishery should be aided by these findings, which are the sole knowledge available on the reproductive features of this species. This will ensure its sustainable harvest and make it easier to conduct future research on fish reproduction.

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Age, growth, and reproductive biology of the blackfin seabass Lateolabrax latus, a major predator in rocky coastal ecosystems of southwestern Japan

Cited by 7 publications

References 25 publications

Age, growth, reproduction and mortality of Xenocypris argentea (Günther,1868) in the lower reaches of the Tangwang River, China

Age, growth, reproduction and mortality of Xenocypris argentea (Günther,1868) in the lower reaches of the Tangwang River, China

A comparative study on the age, growth, and mortality of Gobio huanghensis (Luo, Le & Chen, 1977) in the Gansu and Ningxia sections of the upper Yellow River, China

First Report on Reproductive Features of Shadow Driftfish Cubiceps whiteleggii (Perciformes: Nomeidae): An Effort toward Sustainable Management

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