Fish sperm biology in relation to urogenital system structure

Dzyuba, Viktoriya; Shelton, William L.; Kholodnyy, Vitaliy; Boryshpolets, Sergii; Cosson, Jacky; Dzyuba, Borys

doi:10.1016/j.theriogenology.2019.04.020

Cited by 17 publications

(8 citation statements)

References 126 publications

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“…In general, the male reproductive organ consists of a paired testes, the testicular duct, and the sperm duct in fishes [28,29] (Figure 1). In some primitive fishes (such as sturgeons), the testes release sperm into the testicular ducts, which pass the kidneys.…”

Section: Anatomy Of Reproductive Organmentioning

confidence: 99%

“…K, kidneys; SD, sperm duct; SC-I, primary spermatocyte, SC-II, secondary spermatocyte; SG, spermatogonia; SP, spermatid; SZ, sperm; T, testis; TD, testicular duct; UB, Urinary bladder; UD (WD), urinary duct (Wolffian duct). The panels are modified from Grier [30], Nagahama [32]; Alavi et al [28] and Dzyuba et al [29]. The photo of panel A is courtesy of Associate Professor Borys Dzyuba from the sterlet (Acipenser ruthenus).…”

Section: Figurementioning

confidence: 99%

“…After initiation of sperm motility in the aquatic environment, duration of motility is very short in fishes from a few seconds to several minutes or hours depending on the species [28,29,51,59,65,66]. The inter-species differences probably depend on the capacity of the sperm to restore intracellular ATP and creatine phosphate concentrations [67,68].…”

Section: Sperm Motilitymentioning

confidence: 99%

See 2 more Smart Citations

A Review on Environmental Contaminants-Related Fertility Threat in Male Fishes: Effects and Possible Mechanisms of Action Learned from Wildlife and Laboratory Studies

Alavi

Barzegar-Fallah

Rahdar

et al. 2021

Animals

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Increasing global rates of diminished fertility in males has been suggested to be associated with exposure to environmental contaminants (ECs). The aquatic environments are the final repository of ECs. As the reproductive system is conserved in vertebrates, studies on the effects of ECs on fertility endpoints in fishes provide us with valuable information to establish biomarkers in risk assessment of ECs, and to understand the ECs-related fertility threat. The aim of the present review was to evaluate associations between ECs and fertility determinants to better understand ECs-related male fertility threat in male fishes. Wildlife studies show that the reproductive system has been affected in fishes sampled from the polluted aquatic environment. The laboratory studies show the potency of ECs including natural and synthetic hormones, alkylphenols, bisphenols, plasticizers, pesticides, pharmaceutical, alkylating, and organotin agents to affect fertility determinants, resulting in diminished fertility at environmentally relevant concentrations. Both wildlife and laboratory studies reveal that ECs adverse effects on male fertility are associated with a decrease in sperm production, damage to sperm morphology, alternations in sperm genome, and decrease in sperm motility kinetics. The efficiency of ECs to affect sperm quality and male fertility highly depends on the concentration of the contaminants and the duration of exposure. Our review highlights that the number of contaminants examined over fertility tests are much lower than the number of contaminants detected in our environment. The ECs effects on fertility are largely unknown when fishes are exposed to the contaminants at early developmental stages. The review suggests the urgent need to examine ECs effects on male fertility when a fish is exposed at different developmental stages in a single or combination protocol. The ECs effects on the sperm genome are largely unknown to understand ECs-related inheritance of reproductive disorders transmitted to the progeny. To elucidate modes of action of ECs on sperm motility, it is needed to study functional morphology of the motility apparatus and to investigate ECs-disrupted motility signaling.

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Section: Anatomy Of Reproductive Organmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Sperm Motilitymentioning

confidence: 99%

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A Review on Environmental Contaminants-Related Fertility Threat in Male Fishes: Effects and Possible Mechanisms of Action Learned from Wildlife and Laboratory Studies

Alavi

Barzegar-Fallah

Rahdar

et al. 2021

Animals

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“…Thus sperm consists of spermatozoa and seminal fluid, while testicular sperm of sturgeons passes through the kidneys and the Wolffian ducts, where it is mixed with urine. Thus sturgeon sperm contains spermatozoa, seminal fluid and urine (for details, see review [ 2 ]). This anatomical feature determines a unique sperm maturation process: testicular spermatozoa (TS) acquire the ability for motility activation and fertilization only after mixing with urine [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Environmental Temperature and Hormonal Stimulation on the In Vitro Sperm Maturation in Sterlet Acipenser ruthenus in Advance of the Spawning Season

Dzyuba

Cosson

Papadaki

et al. 2021

Animals

Self Cite

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Sturgeon sperm maturation occurs outside the testes during the transit of testicular spermatozoa (TS) through the kidneys and the Wolffian ducts. A method of in vitro TS maturation in sterlet Acipenser ruthenus was used to investigate the effects of temperature and hormonal stimulation of spermiation on the ability of TS to complete this process. Spermatozoa motility parameters after in vitro maturation of testicular sperm, concentrations of sex steroid hormones and testis morphology were studied in three groups of sterlet: (1) after overwintering in ponds (OW), (2) adapted to spawning temperature (ST), and (3) adapted to spawning temperature with hormonal induction of spermiation (ST-HI). Blood plasma concentrations of testosterone, 11-ketotestosterone and 17,20β-dihydroxy-pregnenolone increased significantly after hormonal induction of spermiation (group ST-HI). In all groups, TS were not motile. After in vitro sperm maturation, motility was up to 60% only in group ST-HI. The data suggest that the ability of TS to be matured in vitro was not related to the environmental temperature, while hormonal stimulation of spermiation during the spawning season was an absolute requirement for optimal in vitro maturation.

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“…Fish spermatozoa are immobile in the seminal fluid within the testicular lumen, but motility is initiated after release to the external surrounding media (Cosson, 2019;Gallego & Asturiano, 2019), and it lasts for only a few seconds in most fish species. In teleost fish, urine also initiates motility, which leads to decreased sperm quality for subsequent poor fertilization success (Dzyuba et al, 2019). Several strategies were developed to improve sperm quality.…”

Section: Introductionmentioning

confidence: 99%

Acute exposure to hyperosmotic conditions reduces sperm activation by urine in the yellowtail tetra Astyanax altiparanae, a freshwater teleost fish

Rocha

Schade

Alves

et al. 2020

Braz. J. Vet. Res. Anim. Sci.

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In freshwater fish with external fertilization, sperm sampling can be contaminated with urine, which triggers motility and gives rise to decreased fertilization success. The maintenance of freshwater fish in hyperosmotic conditions may reduce urine production and improve sperm quality. Thus, the aim of this work was to verify if acute exposure to various NaCl concentrations improves sperm quality in the yellowtail tetra Astyanax altiparanae. Spermiation was induced using a single dose of carp pituitary gland (5 mg kg-1) and the males were maintained at various NaCl concentrations: NaCl 0.00% (control), NaCl 0.45% (hypoosmotic), NaCl 0.9% (isosmotic) and NaCl 1.0% (hyperosmotic) for 6 h at 26 °C. Sperm was collected and verified for activation by urine and motility traits. At 0.00%, 0.45%, and 0.90%, the sperm was motile just after sampling, indicating activation by urine. Surprisingly, at hyperosmotic conditions, no activation was observed. Other sperm and motility parameters did not show any statistical differences, including sperm viability (P = 0.7083), concentration (P = 0.9030), total motility (P = 0.6149), VCL (curvilinear velocity; P = 0.1216), VAP (average path velocity; P = 0.1231) and VSL (straight-line velocity; P = 0.1340). Our results indicate that acute maintenance at hyperosmotic conditions eliminates sperm activation by urine and maintains sperm quality. Such a new procedure is interesting for both basic and applied sciences, including reproductive practice in fish.

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Fish sperm biology in relation to urogenital system structure

Cited by 17 publications

References 126 publications

A Review on Environmental Contaminants-Related Fertility Threat in Male Fishes: Effects and Possible Mechanisms of Action Learned from Wildlife and Laboratory Studies

A Review on Environmental Contaminants-Related Fertility Threat in Male Fishes: Effects and Possible Mechanisms of Action Learned from Wildlife and Laboratory Studies

Influence of Environmental Temperature and Hormonal Stimulation on the In Vitro Sperm Maturation in Sterlet Acipenser ruthenus in Advance of the Spawning Season

Acute exposure to hyperosmotic conditions reduces sperm activation by urine in the yellowtail tetra Astyanax altiparanae, a freshwater teleost fish

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