Fate of Unused Sperm in Post-Breeding Male Ambystoma macrodactylum columbianum

Zalisko, Edward J.

doi:10.2307/1564071

Cited by 7 publications

(3 citation statements)

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“…Spermatozoa were present in the vasa deferentia of 7 (39%) of 18 males sampled in water during the breeding season (January to March). None of 14 males sampled terrestrially in the post-breeding season (March to July) had spermatozoa in their vasa deferentia (Zalisko and Larsen, 1989, observed that males discharge unused spermatozoa from their cloacae at the end of the breeding season). Spermiation apparently was initiated on land Table 2.…”

Section: Receivedmentioning

confidence: 98%

Short Notes

Arntzen¹,

Goudie

Halley

et al. 2004

Amphib Reptilia

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Section: Receivedmentioning

confidence: 98%

Short Notes

Arntzen¹,

Goudie

Halley

et al. 2004

Amphib Reptilia

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“…Perhaps ultimately these sperm will reach the epithelium and become phagocytized, or perhaps they will degrade in the lumen (Sever and Brizzi 1998), or simply leak out of the spermathecae, as noted for unused sperm in the vas deferens of the salamander Ambystoma macrodactylum columbianum (Zalisko and Larsen 1989). Perhaps ultimately these sperm will reach the epithelium and become phagocytized, or perhaps they will degrade in the lumen (Sever and Brizzi 1998), or simply leak out of the spermathecae, as noted for unused sperm in the vas deferens of the salamander Ambystoma macrodactylum columbianum (Zalisko and Larsen 1989).…”

Section: Comparisons With Females From Early In the Breeding Seasonmentioning

confidence: 99%

“…Sperm free in the lumen of the females killed in June, however, still appeared normal in cytology. Perhaps ultimately these sperm will reach the epithelium and become phagocytized, or perhaps they will degrade in the lumen (Sever and Brizzi 1998), or simply leak out of the spermathecae, as noted for unused sperm in the vas deferens of the salamander Ambystoma macrodactylum columbianum (Zalisko and Larsen 1989). No evidence exists for the storage of viable sperm from one breeding season to next in Triturus v. vulgaris (Sever et al .…”

Section: Comparisons With Females From Early In the Breeding Seasonmentioning

confidence: 99%

Sperm storage in females of the smooth newt (Triturus v. vulgaris L.): II. Ultrastructure of the spermathecae after the breeding season

Sever¹,

Halliday²,

Moriarty³

et al. 2001

Acta Zoologica

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 Abstract Sever, D. M., Halliday, T. R., Moriarty, E. C. and Arano, B. 2000. Sperm storage in females of the smooth newt ( Triturus v. vulgaris L.): II. Ultrastructure of the spermathecae after the breeding season. -Acta Zoologica (Stockholm) 82 : 49-56.Sperm storage in cloacal spermathecae was studied in females of Triturus v. vulgaris from southern England killed at the end of the breeding season in June. This species mates and oviposits eggs in ponds from March to June. Included in the sample were 12 unmated females collected in terrestrial situations in March and mated in the laboratory. Some of these females oviposited viable eggs in the laboratory whereas others did not oviposit after mating. In addition, we examined five females with unknown mating histories that were collected from a breeding pond in June. We found that all of the specimens contained some stored sperm and were similar in spermathecal ultrastructure. The spermathecae exhibited characteristics of secretory epithelium at the end of a cycle, including irregular heterochromatic nuclei surrounded by scant cytoplasm, absence of organelles involved in synthetic activities, few secretory vacuoles, and wide intercellular canaliculi. Spermiophagy by the spermathecal epithelium was extensive. In contrast, spermathecae from females at the beginning of the breeding season as reported in our previous study were actively producing a PAS+ secretion and did not exhibit spermiophagy. Spermiophagy is a means of eliminating sperm prior to the next breeding season.

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Sperm storage in the spermatheca of the red-back salamander,Plethodon cinereus (Amphibia: Plethodontidae)

Sever

1997

J. Morphol.

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In northern Indiana, the mating season of Plethodon cinereus occurs after hibernation from March until June, when oviposition begins. During the mating season, a female stores sperm in its spermatheca, a compound tubular gland in the roof of the cloaca. The apical cytoplasm of the spermathecal epithelium is filled with large secretory vacuoles whose product is released while sperm are stored. Females induced to oviposit in June and July by injections of human chorionic gonadotropin (hCG) still retain much sperm 1 month after oviposition, but secretory vacuoles are absent in all specimens sacrificed in July and August. Instead, some sperm are embedded in the spermathecal epithelium with resultant spermiophagy involving lysosomes. A female sacrificed in September 2 months after oviposition possesses scant sperm, but spermiophagy alone does not seem extensive enough to account for the decrease in sperm numbers. Females sacrificed in October prior to hibernation lack sperm in their spermathecae; some secretory vacuoles are present, but they are not as numerous or as enlarged as in specimens collected in March and May. Inter-and intrafamilial differences in the cytology of sperm storage may not be phyletically informative at the family level but related to species-specific reproductive adaptations.

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Fate of Unused Sperm in Post-Breeding Male Ambystoma macrodactylum columbianum

Cited by 7 publications

References 0 publications

Short Notes

Short Notes

Sperm storage in females of the smooth newt (Triturus v. vulgaris L.): II. Ultrastructure of the spermathecae after the breeding season

Sperm storage in the spermatheca of the red-back salamander,Plethodon cinereus (Amphibia: Plethodontidae)

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