Release of 13, 14-Dihydro-15-Keto-Prostaglandin F&lt;sub&gt;2&amp;alpha;&lt;/sub&gt;, a Sex Pheromone, to Water by Cobitid Loach Following Ovulatory Stimulation

Ogata, Hiroshi; Kudoh, Shoji; Takashima, Fumio

doi:10.2331/fishsci.60.143

Cited by 20 publications

(6 citation statements)

References 14 publications

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“…This may make some sense because our studies and those of Ogata et al (1994) both show PGF release rate and composition to vary greatly and to involve multiple release pathways (Sorensen et al, 1995), which would blur the ratio profiles that fish normally encounter. Additionally, although poorly understood PGF production rates and profiles may change during the course of spawning because of their apparent reliance on the presence of ovulated eggs in the reproductive tract that would change during the course of spawning (Stacey and Sorensen, 2009).…”

Section: Discussionmentioning

confidence: 87%

Polar Metabolites Synergize the Activity of Prostaglandin F2α in a Species-Specific Hormonal Sex Pheromone Released by Ovulated Common Carp

Lim

Sorensen

2011

J Chem Ecol

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Many species of teleost fish detect and release F prostaglandins (PGFs), but the specific identities of these compounds and how they function as species-specific pheromones have yet to be resolved. This study addressed these questions in the common carp. An initial set of experiments established that mature male common carp were attracted to chemicals released by ovulated conspecifics, whereas the odor of female goldfish, a close relative, was less attractive. Tests of fractionated holding water from ovulated carp revealed that only the non-polar fraction was attractive on its own. Mass spectrometry and immunoassay next demonstrated that the non-polar fraction contained large quantities of prostaglandin F(2α) (PGF(2α)), 15keto-prostaglandinF(2α), and 13,14-dihydro-15keto-prostaglandin F(2α) (100 g fish released over 1 μg of all 3 PGFs per h at a ratio of 1.0: 1.7: 0.7). Ovulated goldfish released the same three PGFs but at a slightly greater rate and in a different ratio. Tests of synthetic mixtures of these PGFs revealed that the carp-specific mixture attracted male carp but was no better than the goldfish-specific mixture or PGF(2α) alone and that PGF(2α) was just as attractive as mixture of all three PGFs. A final set of attraction tests revealed that although PGF(2α) could explain all of the activity of the non-polar portion of female carp holding water, it could not explain the entire activity of female water but that a mixture of PGFs and the polar fraction could. We conclude that ovulated female carp release a multi-component sex pheromone complex that is comprised of PGF(2α) and unknown species-specific polar compound(s) that synergize the activity of the former. The pheromone also might be useful in controlling this invasive species. The observation that a fish hormonal sex pheromone incorporates bodily metabolites in addition to relatively common hormonal products demonstrates a mechanism by which species specificity may be conferred to this common type of sex pheromone.

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Section: Discussionmentioning

confidence: 87%

Polar Metabolites Synergize the Activity of Prostaglandin F2α in a Species-Specific Hormonal Sex Pheromone Released by Ovulated Common Carp

Lim

Sorensen

2011

J Chem Ecol

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“…The high ArA levels in gonads observed in the present study shows that coral reef fish species may require much more ArA for normal gonadogenesis and embryo development than cold and temperate water species, although dietary ArA tends to be concentrated in gonads, eggs and sperm even in cold and temperate water species. ArA as an eicosanoid precursor is well known to be multifunctional in fish reproduction including pheromonal activity in mating behavior [31,32]: induction of ovulation [33], stimulation of steroidgenesis in ovary [34] and testes [35], interaction of gonadotropin and prostaglandin production [36]. Coral reef fish have, in general, a longer spawning period (from March through December) compared to cold and temperate water species, and they spawn once a month during the spawning period according to lunar phase.…”

Section: Discussionmentioning

confidence: 99%

Arachidonic acid is a Major Component in Gonadal Fatty acids of Tropical Coral Reef fish in the Philippines and Japan

Suloma¹,

Ogata²

2011

J Aquac Res Development

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“…PGF 2 could therefore be considered as a candidate as the sex pheromone in masu salmon, since PGF 2 and its metabolites arouse attraction or sexual behaviour of conspecific mature males in other teleosts such as goldfish (Sorensen et al, 1988) and loach Ogata et al, 1994). In masu salmon, however, the spermiating male parr did not prefer the channel scented by PGF 2 .…”

Section: Discussionmentioning

confidence: 99%

A releaser pheromone that attracts males in the urine of mature female masu salmon

Yambem

Shindo

Yamazaki

1999

Journal of Fish Biology

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A releaser pheromone of masu salmon Oncorhynchus masou was investigated using Y-maze behavioural experiments. During the reproductive season, urine of mature females contains a releaser pheromone which acts as a sex attractant for spermiating mature male parr. The releaser pheromone in mature female urine is one or more low molecular weight substances (less than 10 000) soluble in ether under basic conditions. The attractant was not present in either the coelomic fluid of ovulated females nor in neutral or acidic extracts of female urine which contain free steroids and F-type prostaglandins, respectively.1999 The Fisheries Society of the British Isles

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Release of 13, 14-Dihydro-15-Keto-Prostaglandin F<sub>2α</sub>, a Sex Pheromone, to Water by Cobitid Loach Following Ovulatory Stimulation

Cited by 20 publications

References 14 publications

Polar Metabolites Synergize the Activity of Prostaglandin F2α in a Species-Specific Hormonal Sex Pheromone Released by Ovulated Common Carp

Polar Metabolites Synergize the Activity of Prostaglandin F2α in a Species-Specific Hormonal Sex Pheromone Released by Ovulated Common Carp

Arachidonic acid is a Major Component in Gonadal Fatty acids of Tropical Coral Reef fish in the Philippines and Japan

A releaser pheromone that attracts males in the urine of mature female masu salmon

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