Reproductive biology of the fat snook <scp><i>Centropomus parallelus</i> Poey</scp>, 1860 (<scp>Teleostei, Centropomidae</scp>) and implications for its management in the southern <scp>Atlantic Ocean</scp>

Silva, Gisleine Hoffmann Costa e; Freitas, Matheus Oliveira; Abilhôa, Vinícius

doi:10.1111/jfb.14718

Cited by 8 publications

(2 citation statements)

References 16 publications

(30 reference statements)

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“…Studies on the biology and culture conditions of the snook are of great importance to increase knowledge and serve as the basis for helping management plans for developing this species' aquaculture. Snooks have been studied for many years (Tucker 1987, Peters et al 1998, Gracia-Lopez et al 2003, Maldonado-García et al 2005, Alvarez-Lajonchère & Tsuzuki 2008, Yanes-Roca et al 2009, Cerqueira & Tsuzuki 2009, Santos et al 2009, Jimenez-Martinez et al 2012, Concha-Frías et al 2018, Abdo-de la Parra et al 2020, Young et al 2020, Arenas et al 2021, Arriaga-Hernández et al 2021, Costa e Silva et al 2021). Various species have been held in captivity to determine their reproductive processes and spawning season to reach controlled reproduction and, subsequently, to obtain larvae and juveniles for growth such as Centropomus undecimalis (Ibarra-Castro & Duncan 2007, Young et al 2020, C. viridis (Abdo-de la Parra et al 2020, Arriaga-Hernández et al 2021 and C. parallelus (Cerqueira & Tsuzuki 2009).…”

Section: Introductionmentioning

confidence: 99%

Biochemical composition and condition of wild blackfin snook Centropomus medius through the reproductive cycle

Maldonado-García,

Gracia-López,

Omont

et al. 2024

Lat. Am. J. Aquat. Res.

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The blackfin snook, Centropomus medius, is a valuable fish in American and Mexican markets, mainly from catches. Nonetheless, information and studies about the biology of this species still need to be made available; thus, its aquaculture should be developed. This study aimed to describe the seasonal changes of proximate composition during a reproductive cycle of C. medius, analyzing differences between tissues and their changes related to the reproductive process. The snook specimens were collected in Magdalena Bay, Baja California Sur, Mexico, and measured every month from September 2001 to November 2002. Liver, gonads, muscle tissue, and intraperitoneal fat (IPF) were sampled and weighed. The gonadosomatic index (GSI), hepatosomatic index (HSI), IPF ratio, and condition factor index (K) were calculated. The biochemical composition was analyzed in the gonad, liver, and muscle. The reproductive period (RP) of wild C. medius in Baja California Sur, Mexico, was from June to December. The spawning period was recorded at summer temperature (25-30°C) and photoperiod (>13 h daylight) starting in September. High GSI values (gonad development), low HSI values (lipid reserve mobilization), low IPF, and low K ratio were related to elevated temperatures. Moreover, variations were observed in protein, total lipid, triglycerides, and glycogen content in muscle, liver, and gonad according to the reproductive phase. A positive correlation was demonstrated between protein contents in muscle, gonad, and K, with lower concentrations during RP, while liver protein composition showed an opposite pattern. Lipids were mainly present in the liver, and the concentration decreased during RP while muscle increased. The results obtained in this study show differences in the proximate analyses in the liver, muscle, and gonads throughout the year concerning different phases of the reproductive cycle, indicating a great dependence of this process on the mobilization of reserves during C. medius reproduction. Therefore, understanding the feeding requirements to pursue the management of this species in captivity for aquaculture development is greatly important.

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Section: Introductionmentioning

confidence: 99%

Biochemical composition and condition of wild blackfin snook Centropomus medius through the reproductive cycle

Maldonado-García,

Gracia-López,

Omont

et al. 2024

Lat. Am. J. Aquat. Res.

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“…Protandric hermaphroditism has been reported in various species of the Centropomus genus, including the common snook Centropomus undecimalis [9][10][11][12], the Mexican snook C. poeyi [13], and the fat snook C. parallelus [14,15]. Centropomids are euryhaline and diadromous organisms with asynchronous sexual development and fractional spawning [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Induced Sex Reversal in Adult Males of the Protandric Hermaphrodite Centropomus undecimalis Using 17 β-Estradiol: Enhancing Management Strategies for Captive Broodstock

Contreras-García,

Contreras-Sánchez,

Mendoza-Carranza

et al. 2023

Aquaculture Journal

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The common snook (Centropomus undecimalis) is a protandric hermaphrodite fish that undergoes a sex change during its life cycle. In nature, common snook females develop directly from males shortly after spawning. However, the factors triggering this process remain unknown. This knowledge gap poses challenges for managing the species in captivity. To address this, we conducted a study on sex change induction in three-year-old males using estradiol and evaluated the potential effects of photoperiod manipulation on early maturation. Four treatment groups were employed: (1) fish with estradiol + natural photoperiod; (2) fish without estradiol + natural photoperiod; (3) fish without estradiol + controlled photoperiod; and (4) fish with estradiol + controlled photoperiod. The effectiveness of these treatments was assessed through histological procedures, which allowed for the examination of the fishes’ gonads. Furthermore, the concentration of alkali labile phosphorus in fish plasma was measured and correlated with the histological results. Our findings revealed that administering 2 mg/kg estradiol implants resulted in a remarkable 100% female population within the estradiol-treated groups. No significant effect on fish maturation was observed due to the manipulated photoperiod conditions. This protocol offers improved management strategies for captive broodstock. Firstly, the concentration of estradiol used in this study proved sufficient to induce sex change in this hermaphroditic species, enabling the production of viable females at an early age and smaller size and facilitating easier broodstock manipulation. Secondly, the implementation of the alkali labile phosphorus technique allows for sex identification without the need to sacrifice the fish. In conclusion, our study provides valuable insights into sex change induction and photoperiod manipulation in common snook. The findings contribute to enhanced management practices for captive broodstock. However, further research is needed to explore the underlying mechanisms triggering sex change and to optimize protocols for long-term maintenance and successful reproduction in captivity.

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Protandry in Fishes

Sunobe

2022

Hermaphroditism and Mating Systems in Fish

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Reproductive biology of the fat snook Centropomus parallelus Poey, 1860 (Teleostei, Centropomidae) and implications for its management in the southern Atlantic Ocean

Cited by 8 publications

References 16 publications

Biochemical composition and condition of wild blackfin snook Centropomus medius through the reproductive cycle

Biochemical composition and condition of wild blackfin snook Centropomus medius through the reproductive cycle

Induced Sex Reversal in Adult Males of the Protandric Hermaphrodite Centropomus undecimalis Using 17 β-Estradiol: Enhancing Management Strategies for Captive Broodstock

Protandry in Fishes

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