Effects of melatonin and prolactin treatment on the hypophysial-ovarian system in the catfish, Heteropneustes fossilis (Bloch)

Sundararaj, Bangalore I.; Keshavanath, P.

doi:10.1016/0016-6480(76)90010-1

Cited by 50 publications

(16 citation statements)

References 44 publications

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“…However, daily administration of melatonin resulted in an inhibition in the ovarian activities in a duration (1 day-no effect; 15 days < 30 days) dependent manner during the pre-spawning and the spawning phases. The antigonadal effects of melatonin in this Indian carp are complimentary to the findings on Carassius auratus (Fenwick 1970), Oryzias latipes (Urasaki 1972), and Heteropneustes fossilis (Sundararaj and Keshavanath 1976). It is notable that in all previous studies melatonin was administered for quite longer duration (50-60 days), while antigonadal effect of melatonin has been noted during the pre-spawning and spawning phases of Catla even after a shorter duration (15 days) of treatment.…”

Section: Discussionsupporting

confidence: 64%

Implication of melatonin in oocyte maturation in Indian major carp Catla catla

Maitra

Chattoraj

Bhattacharyya

2005

Fish Physiol Biochem

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Importance of melatonin (N-acetyl-5-methoxytryptamine) in the regulation of oocyte maturation has been studied in a carp Catla catla. Melatonin secretory cells were immunocytochemically localized only in the end vesicle. Diurnal and seasonal studies indicated that the serum levels of melatonin exhibit a minimum diurnal value in the mid-day of all seasons, but the peak value is attained either at mid-night or just before the onset of light. Moreover, highest seasonal value of melatonin was noted in the post-spawning phase. Administration of melatonin at different doses (25, 50, or 100 mug/100 g body weight) for 1, 15, or 30 days resulted in either pro- or anti-gonadal effects depending on the reproductive seasons. In vitro study revealed that incubation of oocytes with melatonin 4h prior to addition of MIH in the medium led to an accelerated rate of oocyte maturation through the formation of a complex of two proteins (MPF), cyclin B and cyclin dependant kinase, Cdc2. Moreover, melatonin pre-incubation considerably increased MIH stimulation of histone H1 phosphorylation as compared to MIH alone. Taken together, gathered information promotes the idea of a physiological role of melatonin in the maturation of oocytes in Catla catla.

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Section: Discussionsupporting

confidence: 64%

Implication of melatonin in oocyte maturation in Indian major carp Catla catla

Maitra

Chattoraj

Bhattacharyya

2005

Fish Physiol Biochem

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“…However, results of studies in different fish are not identical. Exogenous administration of melatonin was found to be inhibitory in long-day breeding temperate fish (Urasaki 1976;Bornestaf et al 2001), as well as in tropical species such as H. fossilis (Sundararaj and Keshavanath 1976;Joy and Agha 1991) and M. tengara (Saxena and Anand 1977). On the other hand, administration of high doses of melatonin induced pro-gonadal effects in C. batrachus (Singh and Lal 1994), and in vitro studies on the oocytes of carp Cyprinus carpio (Popek et al 1991(Popek et al , 1996 and killifish Fundulus heteroclitus (Cerda et al 1997) could not demonstrate any effect of melatonin on oocyte maturation.…”

Section: Introductionmentioning

confidence: 98%

Role of photoperiod and melatonin in the regulation of ovarian functions in Indian carp Catla catla: basic information for future application

Maitra

Chattoraj

2007

Fish Physiol Biochem

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The major carp Catla catla is a popular freshwater edible fish and an extensively cultured species in India. However, basic information on the physiology of reproduction is lacking in this species. By virtue of its surface feeding habit, it maintains close contact with environmental light, and is a species of choice for the study of temporal organization of reproduction under natural and experimental conditions for understanding environmental and/or endocrine mechanisms that control the annual reproductive cycle. The present review covers information gathered in recent years to emphasize the temporal pattern of reproductive events and the importance of photoperiod and melatonin, a hormone of the pineal gland that links the environment with the endocrine system in the regulation of reproduction. Finally, the outcome of the research is discussed in terms of its direct and indirect applications to aquaculture of this species with a view to manipulate its breeding at a desired time of the year to meet market demand.

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“…These results accord with those obtained by Baggerman (1957,1972). Baggerman (1957) (Baggerman, 1957(Baggerman, ,1972 (Fenwick, 1970 ;Urasaki, 1972 ;de Vlaming, Sage and Charlton, 1974a, b ;Sundararaj and Keshavanath, 1976 ;Saxena and Anand, 1977) (O'Connor, 1969 ;Fenwick, 1970 ;Urasaki, 1972 ;Levey, 1973 ;de Vlaming, Sage and Charlton,1974a, b ;Sundararaj and Keshavanath, 1976 ;Saxena and Anand, 1977 ;Packard and Packard, 1977 ;Biswas et al, 1978 ;Misra and Thapliyal, 1979 ;Haldar and Thapliyal, 1981) or no effects at all on reproduction (Juszkiewicz and Rakalska, 1965 ;lwamatsu, 1978) …”

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confidence: 99%

“…In teleosts, melatonin has antigonadal effects when reproduction would otherwise be stimulated by long photoperiods (Fenwick, 1970 ;Urasaki, 1972 ;de Vlami ng, Sage and Charlton,1974a, b ;Sundararaj and Keshavanath, 1976 ;Saxena and Anand, 1977).…”

mentioning

confidence: 99%