Bisoniana 118. Postnatal development of the European bison spermatogenesis

Czykier, Elżbieta; Sawicki, B; Krasińska, Małgorzata

doi:10.4098/at.arch.99-8

Cited by 14 publications

(22 citation statements)

References 21 publications

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“…The present findings concerning the frequency of spermiogenesis in young European bison males up to 2 years old are similar to results obtained previously in this field (Czykier et al 1999, Czykier and Krasińska 2004, Czykier 2008. In this study, in young males up to 2 years old spermiogenesis was rare and could be observed in a marginal number of animals (16.7%).…”

Section: Discussionsupporting

confidence: 92%

“…Spermiogenesis of spermatozoa in an electron microscopic picture in one 1.5-year-old European bison male. Our findings (Czykier et al 1999, Czykier and Krasińska 2004, Czykier 2010 suggest that the occurrence of spermiogenesis in young European bison up to 3 years old is a rare phenomenon.…”

Section: Introductionsupporting

confidence: 54%

“…This finding becomes clear when we take into consideration that at the age of 4 years all the male European bison examined had spermiogenesis and entitles us to verify the existing ideas concerning the frequency of spermiogenesis in 3-year-old European bison. In comparison to other ungulates, spermiogenesis in European bison appears quite late (Czykier et al 1999). For example in male wapiti (Cervus elaphus), the sperm was found to be present in ejaculate in 2-year-old specimens (Haigh et al 1984), in male fallow deer (Dama dama) at the age of 16 months (Chapman andChapman 1970, Chaplin andWhite 1972), in male red deer (Axis axis) between 12 and 15 months (Webster et al 1992) and in male North American bison (Bison bison) from 18 to 33 months of age (Helbig et al 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Calves up to 1 year old were discarded from the analysis, because in none of the investigations the presence of spermiogenesis was observed in such young animals. The limiting age of 3 years was established since the previous histological research showed that at the age of 4 years all the animals tested had spermiogenesis in the seminiferous tubules of the testes (Czykier et al 1999). …”

Section: Animalsmentioning

confidence: 99%

“…The research performed on the postnatal development of spermiogenesis in male European bison Bison bonasus (L.) in 1969-1993 revealed no occurrence of spermiogenesis in the group of the youngest males up to 2 years of age (37 individuals) (Czykier et al 1999). In the same study, of the males up to 3 years old (13 individuals) only 3 animals had spermiogenesis.…”

Section: Introductionmentioning

confidence: 99%

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Is spermiogenesis common or rare in young male European bison aged 2 and 3 years?

Czykier¹

2011

Polish Journal of Veterinary Sciences

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The aim of the present study was to determine how often spermiogenesis occurs in young male European bison up to 3 years old. Research was performed on sections of the testes and epididymes collected from 51 male bison aged 2-3 years. The animals were divided into 2 age groups: young males up to 2 years and young males up to 3 years old, with further separation into specimens with or without spermiogenesis. The animals were culled during the autumn-winter seasons in 1994-2008 (after rutting period) in the Bialowieża Primeval Forest. Spermiogenesis in the 2-year-old animals was a rare condition found in 16.7% of cases. However, at the age of 3 years more than half of the individuals examined (53.3%) had spermiogenesis. Young males up to 2 years old with spermiogenesis were characterized by a significantly higher body weight and their right testis also weighed more than the left testis of the animals without spermiogenesis, the difference being on the border of statistical significance.There was no significant differences in the body mass and weight of the left testis between older animals, up to 3 years old, with or without spermiogenesis. However, young males up to 3 years old with spermiogenesis were characterized by a significantly higher weight of the right testis than those without spermiogenesis.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 99%

Section: Animalsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Is spermiogenesis common or rare in young male European bison aged 2 and 3 years?

Czykier¹

2011

Polish Journal of Veterinary Sciences

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Age‐dependent pattern of connexin43 expression in testes of European bison (Bison bonasus, L.)

et al. 2009

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Morphology and the expression of connexin43 (Cx43) was investigated in testes of immature, prepubertal, and adult European bison bulls by means of routine histology, immunohistochemistry, and Western blotting, respectively. Testes were collected from culled animals living in Bialowieza and Borecka Forests, Poland. Histological examination of testicular tissue of immature and prepubertal males revealed normal structure, whereas of adult individuals either normal testicular structure with advanced spermatogenesis or varying degrees of tubule and interstitial tissue abnormality were seen. Immunohistochemical studies revealed Cx43 signal mostly at Leydig cell membrane appositions. In testes of immature males heterogeneous staining was observed; its intensity markedly increased in prepubertal males reaching almost two times more intense staining in adults. Strong Cx43 signal between Leydig cells was also observed in testes with structural alterations; however, sporadically it was of weak linear pattern. In the tubules of the latter, the intensity of Cx43 staining was weak to moderate or it was even absent. Immunohistochemical qualitative analysis was confirmed by quantitative image analysis in which the staining intensity was expressed as relative optical density of diaminobenzidine deposits. Data from Western blot analyses confirmed the results obtained by immunohistochemistry; immunodetectable Cx43 protein as a band of 43 kDa was detected in all testes samples. Overall, the increase in Cx43 level in testes along the bison postnatal development may be capable of a better exchange of metabolites and coordinating Leydig cell activity during maturation. A relationship between homozygosity occurring in European bison and altered intercellular communication is suggested.

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European Bison Bison bonasus (Linnaeus, 1758)

Kowalczyk

Plumb

2022

Handbook of the Mammals of Europe

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Bisoniana 118. Postnatal development of the European bison spermatogenesis

Cited by 14 publications

References 21 publications

Is spermiogenesis common or rare in young male European bison aged 2 and 3 years?

Is spermiogenesis common or rare in young male European bison aged 2 and 3 years?

Age‐dependent pattern of connexin43 expression in testes of European bison (Bison bonasus, L.)

European Bison Bison bonasus (Linnaeus, 1758)

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