Ultrastructure of the domestic tom cat () and tiger () spermatozoa

Schmehl, Manfred; Graham, E.F.

doi:10.1016/0093-691x(89)90031-9

Cited by 13 publications

(7 citation statements)

References 25 publications

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“…This feature is quite similar to the sperm nucleus of the fox (Vulpes lagopus) (Hofmo and Berg 1989), mustelids (Horst et al 1991), the dog ) and the American black bear (Ursus americanus) (Brito et al 2010). However, in felids, such as the domestic cat and the tiger (Panthera tigris altaica) (Schmehl and Graham 1989), this thinning of the nucleus is not as pronounced. Most likely, the phylogenetic proximity is responsible for the fact that dogs, foxes, mustelids, bears and coatis have similar characteristics in their sperm.…”

Section: Discussionmentioning

confidence: 67%

“…). However, in felids, such as the domestic cat and the tiger ( Panthera tigris altaica ) (Schmehl and Graham ), this thinning of the nucleus is not as pronounced. Most likely, the phylogenetic proximity is responsible for the fact that dogs, foxes, mustelids, bears and coatis have similar characteristics in their sperm.…”

Section: Discussionmentioning

confidence: 99%

“…). In carnivores, this technique has already been used in cats, tigers ( Panthera tigris altaica ) (Schmehl and Graham ), blue foxes ( Vulpes lagopus ) (Hofmo and Berg ), ferrets (Horst et al. , ), dogs (Silva et al.…”

Section: Introductionmentioning

confidence: 99%

“…Ultrastructural evaluations of sperm provide relevant information regarding the integrity of cell organelles, as well as ensure that the conformation is within normal parameters for the cell; through description of these data, questions can be resolved about the phylogenetic relationships between different groups (Gusmão-Pompiani et al 2009). In carnivores, this technique has already been used in cats, tigers (Panthera tigris altaica) (Schmehl and Graham 1989), blue foxes (Vulpes lagopus) (Hofmo and Berg 1989), ferrets (Horst et al 1991(Horst et al , 2009, dogs ) and bears (Ursus americanus) (Brito et al 2010). However, in ring-tailed coatis (N. nasua), information about the ultrastructure is scarce and superficial.…”

Section: Introductionmentioning

confidence: 99%

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Morphometry, Morphology and Ultrastructure of Ring‐tailed Coati Sperm (Nasua nasua Linnaeus, 1766)

Silva

Magalhães

Ribeiro³

et al. 2015

Reprod Domestic Animals

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The ring-tailed coati (Nasua nasua) is a procyonid whose population is in sharp decline. Therefore, studies are needed to better understand the reproduction of this animal. For this reason, this study aimed to evaluate the morphology, morphometry and sperm ultrastructure of ring-tailed coati sperm. Four captive adult males were used for this study. Slides stained with Bengal Rose were used for the morphometric and morphologic analyses. The length and width of the head were measured, as well as the length of the midpiece and tail and the total length of the sperm. Scanning electron microscopy and transmission electron microscopy were used for the ultrastructural analyses. The most obvious morphological abnormalities observed were coiled tails (6.1 ± 8.7%) and the lack of acrosomes (5.4 ± 4.4%). Regarding the morphometry, the measurements of the head (length × width), midpiece (length) and tail (length) were (mean ± SD) 6.2 ± 0.4 × 8.1 ± 0.6 μm, 14.1 ± 0.5 and 63.9 ± 4.1 μm, respectively, and the total length of the sperm was 86.1 ± 4.3 μm. Through electron microscopy, the presence of electron-lucent points in the nucleus and the presence of approximately 55 mitochondrial spirals in the midpiece were identified. The data obtained in this study provide detailed information on the sperm characteristics of coatis and may inform future research on germplasm conservation, both for this species and other threatened procyonids.

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Section: Discussionmentioning

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Morphometry, Morphology and Ultrastructure of Ring‐tailed Coati Sperm (Nasua nasua Linnaeus, 1766)

Silva

Magalhães

Ribeiro³

et al. 2015

Reprod Domestic Animals

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“…In addition to studies in mouse and human, a few studies in other mammals have examined the structure of sperm centrioles and their contribution to the oocyte at fertilization. By TEM, it was seen that the proximal centriole is retained in domestic cat, tiger (Schmel and Graham, 1989), little brown bat (Fawcett and Ito, 1965), rabbit (Zamboni and Stafanini, 1971), Russian hamster (Fawcett, 1975), sheep (Crozet et al, 2000), long-fingered bat (Bernard and Hodgson, 1988) and bovine (Sathananthan et al, 1997) sperm. In addition, the sperm centriole was seen in sheep (Crozet et al, 2000) and bovine (Sathananthan et al, 1997) zygotes.…”

Section: Discussionmentioning

confidence: 99%