The tubular compartment and the spermatogenic dynamics of the wild rodent Oxymycterus nasutus (Rodentia: Cricetidae)

Morais, A.C.T.; Balarini, Maytê Koch; Lopes, Elizabeth Oliveira; Menezes, Tatiana Prata; Quintela, Fernando Marques; Morais, Danielle Barbosa; Gomes, Marcos de Lucca Moreira; Matta, Sérgio Luís Pinto da

doi:10.1016/j.anireprosci.2014.06.027

Cited by 13 publications

(21 citation statements)

References 38 publications

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“…lilium , D . rotundus testes showed primary spermatocytes in zygotene at stage 2, similarly the pattern described in other mammalian orders [10, 11, 22, 26, 40–41]. …”

Section: Discussionsupporting

confidence: 84%

“…This percentage loss is within the range of 60 to 90% previously registered for mammals [10, 12, 22]. The meiotic yield shows that 2.5 round spermatids were produced at the end of meiosis, also within the range recorded for mammals (from 1.90 to 3.62 cells) [10, 12, 22, 26, 40, 46–51]. The overall yield of spermatogenesis estimated for D .…”

Section: Discussionsupporting

confidence: 79%

“…lilium and above the annual average recorded for M . molossus and several other domestic and wild mammals [10, 12, 22, 26, 40, 49, 50]. …”

Section: Discussionmentioning

confidence: 99%

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The spermatogenic process of the common vampire bat Desmodus rotundus under a histomorphometric view

et al. 2017

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Among all bat species, Desmodus rotundus stands out as one of the most intriguing due to its exclusively haematophagous feeding habits. However, little is known about their spermatogenic cycle. This study aimed at describing the spermatogenic process of common vampire bats through testicular histomorphometric characterization of adult specimens, spermatogenic production indexes, description of stages of the seminiferous epithelium cycle and estimative of the spermatogenic process duration. Morphometrical and immunohistochemical analyzes for bromodeoxiuridine were conducted under light microscopy and ultrastructural analyzes were performed under transmission electron microscopy. Vampire bats showed higher investment in gonadal tissue (gonadosomatic index of 0.54%) and in seminiferous tubules (tubulesomatic index of 0.49%) when compared to larger mammals. They also showed a high tubular length per gram of testis (34.70 m). Approximately half of the intertubular compartment was found to be comprised by Leydig cells (51.20%), and an average of 23.77x106 of these cells was found per gram of testis. The germline cells showed 16.93% of mitotic index and 2.51% of meiotic index. The overall yield of spermatogenesis was 60% and the testicular spermatic reserve was 71.44x107 spermatozoa per gram of testis. With a total spermatogenesis duration estimated at 37.02 days, vampire bats showed a daily sperm production of 86.80x106 gametes per gram of testis. These findings demonstrate a high sperm production, which is commonly observed in species with promiscuous mating system.

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“…lilium , D . rotundus testes showed primary spermatocytes in zygotene at stage 2, similarly the pattern described in other mammalian orders [10, 11, 22, 26, 40–41]. …”

Section: Discussionsupporting

confidence: 84%

Section: Discussionsupporting

confidence: 79%

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The spermatogenic process of the common vampire bat Desmodus rotundus under a histomorphometric view

et al. 2017

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“…Besides, scientific studies regarding the reproductive physiology of wild rodents is still scarce, which motivated us to develop the studies with the Sigmodontinae subfamily, starting with Oxymycterus nasutus [12].…”

Section: Introductionmentioning

confidence: 99%

Germ cells and the seminiferous epithelium cycle in the wild rodent Oxymycterus rufus (Rodentia: Cricetidae)

Carolina¹,

Morais²,

Balarini³

et al. 2016

IOSR

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“…Several studies have quantified the testicular cells using different techniques, as proposed by Bellvé et al (1977), but most of then use histomorphometry (Nunes et al 2013, De Melo et al 2013, Morais et al 2014. Thus, this work aims to estimate the number of testicular cells in two Caviomorph rodents during the postnatal development, applying design-based stereological techniques as an accurate tool.…”

Section: Introductionmentioning

confidence: 99%

The quantification of testicular cells during the postnatal development in two Caviomorph rodents: the guinea pig (Cavia porcellus) and the cutia (Dasyprocta agouti)

Simões

Sasahara

Favaron

et al. 2017

An. Acad. Bras. Ciênc.

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The germinative, Sertoli and Leydig cells of two caviomorph rodents (Cavia porcellus and Dasyprocta agouti) were counted as well as the estimation of the total volume of the testis and the total volume of seminiferous tubules and interstitium in prepubertal, pubertal and adult animals. The number of spermatogonia, spermatocytes and spermatids cells increased during the pubertal phase in both rodents, notably the spermatid cells. The spermatocyte and spermatid slightly decreased in the adult of both rodents, but the increment in spermatogonia cells number was seen, mainly in cutias. The number of Sertoli cells increased in pubertal rodents, but in the adult the number reduced. Substantial number of Leydig cells was counted in pubertal and adult guinea pigs. In cutias, the number of Leydig cells increased in pubertal phase and decline in adults. The design-based stereological method has proven to be unbiased and reliable to be applied in reproduction studies.

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The tubular compartment and the spermatogenic dynamics of the wild rodent Oxymycterus nasutus (Rodentia: Cricetidae)

Cited by 13 publications

References 38 publications

The spermatogenic process of the common vampire bat Desmodus rotundus under a histomorphometric view

The spermatogenic process of the common vampire bat Desmodus rotundus under a histomorphometric view

Germ cells and the seminiferous epithelium cycle in the wild rodent Oxymycterus rufus (Rodentia: Cricetidae)

The quantification of testicular cells during the postnatal development in two Caviomorph rodents: the guinea pig (Cavia porcellus) and the cutia (Dasyprocta agouti)

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