Analysis of Male Urine as Pheromone to Increase Reproduction in Female Tiger Grouper<i>(Epinephelus Fuscoquttatus)</i>

Supii, Apri I.; Arifati, Diana; Widodo, Maheno Sri; Kilawati, Yuni

doi:10.1088/1757-899x/515/1/012044

Cited by 2 publications

(2 citation statements)

References 28 publications

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“…Similarly, in rainbow trout (Oncorhynchus mykiss) [35] and sea lampreys (Petromyzon marinus) [36], pheromones play a role in inducing endocrine mechanisms related to the final maturation of the fish. In addition, steroid compounds in the urine of tiger groupers (E. fuscoquttatus) show pheromonal effects that induce sex steroids, although their relationship with maturation has not yet been clarified [37]. To date, there have been no reports that clearly show the relationship between pheromones and the endocrine system in FOM; however, the role of the HPG axis in FOM has been demonstrated in many teleost fish [12].…”

Section: Discussionmentioning

confidence: 99%

Male Pheromones Induce Ovulation in Female Honeycomb Groupers (Epinephelus merra): A Comprehensive Study of Spawning Aggregation Behavior and Ovarian Development

Amagai

Izumida²,

Murata

et al. 2022

Cells

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This study characterizes the spawning phenomena of the honeycomb grouper (Epinephelus merra), which is a lunar-synchronized spawner that spawns a few days after full moon. To elucidate the aggregation characteristics of wild honeycomb groupers, the numbers of males and females at the spawning grounds were counted before and after the full moon. Approximately 20 males were consistently observed at the spawning grounds throughout the study period. Females appeared several days after full moon and rapidly increased in number, peaking four days after full moon (41 individuals). The maturation status of the females aggregating at the spawning grounds was investigated. The gonadosomatic index increased rapidly three days after full moon, and ovulation was confirmed. Individuals with ovulatory eggs were present for three days, after which the number of females at the spawning grounds decreased. Additionally, the role of males in final oocyte maturation (FOM) and ovulation in females during the spawning phase was investigated in captivity. FOM was induced in females reared in water with mature males, suggesting that male pheromones in the water induced FOM via activation of the hypothalamic–pituitary–gonadal axis. This suggests that spawning at the natural spawning grounds was the result of male–female interactions via pheromones.

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Section: Discussionmentioning

confidence: 99%

Male Pheromones Induce Ovulation in Female Honeycomb Groupers (Epinephelus merra): A Comprehensive Study of Spawning Aggregation Behavior and Ovarian Development

Amagai

Izumida²,

Murata

et al. 2022

Cells

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“…Pheromones have also been identified in these fish species, including sulfated sex steroids in rainbow trout [ 57 ] and bile acids in sea lamprey [ 58 ]. In addition, a sex steroid-inducing pheromone effect has been reported in the urine of the tiger grouper ( E. fuscoquttatus) , suggesting steroid compounds as pheromone candidates [ 59 ]. Thus, pheromone substances seem to vary between fish species.…”

Section: Final Maturation and Spawningmentioning

confidence: 99%

Endocrine Regulation of Maturation and Sex Change in Groupers

Soyano

Amagai

Yamaguchi

et al. 2022

Cells

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Groupers are widely distributed in tropical and subtropical areas worldwide, are key species to coastal ecosystems, and valuable fishery targets. To facilitate artificial seed production technology for grouper aquaculture, the mechanisms of reproduction and gonad development are being elucidated for these important species. In addition, since groupers are sexually dimorphic fish with female-first maturity (protogynous hermaphrodite fish), research is being conducted to clarify the ecological mechanism of sex change and their reproductive physiology, focusing on the endocrine system. In recent years, research on groupers has also been conducted to understand changes in the coastal environment caused by ocean warming and man-made chemicals. However, due to difficulties associated with conducting research using wild populations for breeding experiments, knowledge of the physiology and ecology of these fish is lacking, especially their reproductive physiology. In this review, we present information on the reproductive physiology and endocrinology of groupers obtained to date, together with the characteristics of their life history.

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Analysis of Male Urine as Pheromone to Increase Reproduction in Female Tiger Grouper(Epinephelus Fuscoquttatus)

Cited by 2 publications

References 28 publications

Male Pheromones Induce Ovulation in Female Honeycomb Groupers (Epinephelus merra): A Comprehensive Study of Spawning Aggregation Behavior and Ovarian Development

Male Pheromones Induce Ovulation in Female Honeycomb Groupers (Epinephelus merra): A Comprehensive Study of Spawning Aggregation Behavior and Ovarian Development

Endocrine Regulation of Maturation and Sex Change in Groupers

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