Sex Inversion in Hermaphrodite Teleosts

In the last decade, there has been a shift in the sex ratio of the mussel Mytilus galloprovincialis in the Black Sea towards increase of males. In modern literature, focus is mainly on mechanisms of sex inheritance in mussels and hormonal regulation of the reproduction, and there is no information on sex inversion in M. galloprovincialis under the influence of environmental factors. The goal of this work is to establish the fact of sex change in mussels cultivated near the coast of Crimea under the influence of some external environmental factors. We establish that mussels change sex from female to male, but some specimens become hermaphrodites, with their fraction reaching 13%. Under unfavorable environmental conditions, mussel females change sex, and their mortality rises up to 69%. In water areas subject to anthropogenic impact, the proportion of sex inversion in the mollusks may be as high as 58%. The influence of various adverse environmental factors on sex inversion in mussel females is unequal, and its strength decreases in the following order: diesel fuel > hypoxia > anionic detergents > starvation.

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Histological and ultrastructural studies on the effects of hCG on sex inversion in the protogynous teleost Coris julis

Journal of Fish Biology ◽

10.1111/j.1095-8649.1997.tb01995.x ◽

1997 ◽

Vol 51 (4) ◽

pp. 738-749 ◽

Cited By ~ 2

Author(s):

R. Reinboth ◽

S. Bnrusle-Sicard

Keyword(s):

Ultrastructural Studies ◽

Sex Inversion

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Further studies on the sexuality of the hermaphroditic teleost Diplodus sargus, with particular reference to protandrous sex inversion

Journal of Fish Biology ◽

10.1111/j.1095-8649.1994.tb00932.x ◽

1994 ◽

Vol 45 (4) ◽

pp. 661-670 ◽

Cited By ~ 27

Author(s):

Valeria Micale ◽

Francesco Perdichizzi

Keyword(s):

Diplodus Sargus ◽

Sex Inversion

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Indicators of chemiluminescent and bioluminescent tests of biological liquids in the assessment of physical health

Russian Clinical Laboratory Diagnostics ◽

10.18821/0869-2084-2020-65-9-541-546 ◽

2020 ◽

Vol 65 (9) ◽

pp. 541-546

Author(s):

Svetlana Nikolaevna Derevtsova ◽

A. A. Romanenko ◽

O. A. Kolenchukova ◽

L. V. Stepanova ◽

V. G. Nikolaev ◽

...

Keyword(s):

Sexual Dimorphism ◽

Young Male ◽

Antioxidant Defense System ◽

The Body ◽

Antioxidant Protection ◽

Body Type ◽

Sexual Characteristics ◽

Body Sizes ◽

Sex Inversion ◽

Biological Liquids

The study includes anthropometry of 172 young male, obtained data on the length and body mass, measured the transverse diameters of the shoulders and pelvis, various body types was identified by the J.M. Tanner sexual dimorphism index (andromorphic, mesomorphic, gynecomorphic). The chemiluminescent and bioluminescent study of saliva and blood was conducted in the examined young male. We studied the indicators of the antioxidant defense system under the influence of stress. The antioxidant status of saliva was determined using the H2O2-luminol-dependent chemiluminescence method. Data on the activity of NAD (P) -dependent dehydrogenases in blood lymphocytes was obtained from a bioluminescent method of research. Young male of andromorphic body type had large overall and transverse body sizes. Indicators of antioxidant protection of saliva and blood in men of adolescence, the body type of the sexual dimorphism index J.M. Tanner was different. The persons of the andromorphic body type differed in terms of chemiluminescence in comparison with the young male of gynecomorphic body type. The results of bioluminescent blood tests suggest a violation of the catabolic and anabolic processes of carbohydrate and fat metabolism in young men of mesomorphic and gynecomorphic body types. Indicators of the system of antioxidant protection of saliva and blood reflect the sexual characteristics of the body of young male and can be used as additional criteria for diagnosing sex inversion and assessing the risk of developing socially attributed diseases.

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