Effect of Extirpation of "Seminal Vesicles" on the Reproductive Performance of the Male Catfish, Heteropneustes fossilis (Bloch)

Sundararaj, Bangalore I.; Nayyar, S. K.

doi:10.1086/physzool.42.4.30155514

Cited by 10 publications

(3 citation statements)

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“…Although several functions are ascribed to the SV and its secretions, only a few studies have addressed these functions experimentally (Sundararaj and Nayyar 1969a;Gaighe 1977;van den Hurk et al 1987a, c;van Weerd et al 1991;van den Hurk and Resink 1992;Chowdhury and Joy 2001a, d;Lahnsteiner et al 2002;Mansour et al 2002Mansour et al , 2004. Histological, ultrastructural, enzyme-histochemical, qualitative and quantitative biochemical, and physiological studies indicate that the SV is involved in multiple reproductive functions.…”

Section: Physiological Rolementioning

confidence: 99%

“…Such modifications have been reported in blennies, gobies, charids, pimelodids, and catfishes and are described variously as testicular glands, testicular blind pouches, and seminal vesicles or sperm duct glands (Colombo and Burighel 1974;Patzner and Seiwald 1987a, b;de Jonge et al 1989;Patzner 1987, 1989;Lahnsteiner et al , 1992aFishelson et al 1994;Joy and Singh 1998;Singh and Joy 1998a;Meisner et al 2000;Richtarski and Patzner 2000;Hamlett et al 2002;Reardon et al 2002;Cruz and Santos 2004). Various functions are attributed to these, such as differentiation of spermatids, storage and nutrition of spermatozoa, secretion of sialomucins, proteins and enzymes, storage of lipids and phospholipids, production of steroids and steroid conjugates, phagocytosis of residual germ cells, pheromonal function, and the enhancement of sperm motility and fertilization efficiency (Sundararaj and Nayyar 1969a;Lahnsteiner et al , 1992avan den Hurk and Resink 1992;Ohta et al 1997;Singh and Joy 1999;Chowdhury and Joy 2001a;Mansour et al 2004) (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

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Seminal vesicle and its role in the reproduction of teleosts

Chowdhury

Joy

2007

Fish Physiol Biochem

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One mouse click on fish seminal vesicle (SV) in Pub-Med reveals a limited number of articles that give various pieces of information on its restricted distribution, origin, structure, relation with testis, and physiology. Although in the last decade significant progress has been made with respect to the nature and multiple functions of SV secretions, and new aspects are steadily being uncovered, much still remains to be known before we can realize its potential application in fisheries. This review is an attempt to provide an update on recent research on various aspects of the SV and its secretory products in teleosts. The available data suggest a significant role of SV and its products in the maturation and nutrition of sperm cells, in the maintenance of their integrity and viability, and the enhancement of spawning performance and fertilization.

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Section: Physiological Rolementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seminal vesicle and its role in the reproduction of teleosts

Chowdhury

Joy

2007

Fish Physiol Biochem

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“…The male reproductive system has accessory glands, the seminal vesicles, which empty into the spermatic ducts and secret a viscous fluid consisting of mucopolysaccharide and protein (Nayyer & Sundararaj, 1970;Van den Hurk et al, 1987). The function of this secretion is unclear; it possibly improves sperm and egg contact (Sundararaj & Nayyer, 1969) and acts as a chemical cue between sexes (Schoonen et al, 1987a, b;Resink et al, 1989;Singh & Joy, 1998). The testis structure and process of spermiogenesis (Otémé et al, 1996) is similar to those of other teleosts (Grier, 1981;Billard, 1986).…”

Section: Introductionmentioning

confidence: 99%

The spermatozoon of the African catfish: fine structure, motility, viability and its behaviour in seminal vesicle secretion

Mansour¹

2002

Journal of Fish Biology

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The spermatozoon of the African catfish Clarias gariepinus is a simple organized aquasperm although it reveals very unique characteristics: the cytoplasmic channel is lacking, the mitochondria form a complex structure and the arrangement of the centriolar complex is species specific. Semen has high initial motility rates (c. 70-90%) and swimming velocities (c. 120-140 m s 1 ), the main swimming type is linear. Motility duration in water is 30 s and is prolonged only to 40 s in NaCl solutions or more complex buffered motility activating saline solutions. A pH between 7·0 and 9·0 has no effect on the sperm motility parameters. Motility is completely and reversibly suppressed in electrolyte and non-electrolyte solutions with an osmolality of 200 mosmol kg 1 . During immotile storage the sperm viability is influenced by the osmolality and the potassium levels of the storage medium, by the temperature and by the dilution. At optimal conditions (buffered sperm motility inhibiting saline solution: 150 mmol l 1 NaCl, 2·5 mmol l 1 KCl, 1 mmol l 1 CaCl 2 , 1 mmol l 1 MgSO 4 , 20 mmol l 1 Tris solution, pH 8·5; dilution rate 1: 5; storage temperature, 4 C) sperm viability persists for >7 days. High viscosity of the pure seminal vesicle secretion completely inhibits the sperm motility. When the seminal vesicle secretion is diluted in water the viscosity decreases and the motility suppressing effect is neutralized. When semen is mixed with seminal vesicle secretion the sperm viability decreases to zero within 10 min. 2002 The Fisheries Society of the British Isles

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