Morphometric and Histoarchitectural Changes in the Ovary of &lt;i&gt;Pteropus giganteus&lt;/i&gt; (Brunnich) During Various Phases of Reproductive Cycle

Dorlikar, A. V.; Dhamani, Amir; Charde, Pravin; Mohite, Anil S

doi:10.5376/ijmz.2013.03.0008

Cited by 4 publications

(8 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These follicles gradually migrate to the peripheral region of the ovary as they develop and increase in size. This pattern is also found in other bat species, such as Pteropus giganteus , Artibeus fimbriatus and Artibeus obscurus (Dorlikar et al, 2013).…”

Section: Ovarian Morphologysupporting

confidence: 72%

“…The analysis of the folliculogenesis of P. gymnonotus demonstrated that the growth and development of the follicles followed the typical pattern of other mammals, as well as of other bats, such as Miniopterus fraterculus (Bernard, 1980), Artibeus fimbriatus , Sturnira lilium (Fazzolari-Corrêa, 1995) and Pteropus giganteus (Dorlikar et al, 2013). According to Adona (2012), the standard folliculogenesis process in mammals occurs in the ovarian cortex, where in the transition from mitosis to meiosis, oogonia transform into primary oocytes and primordial follicles, located on the periphery of the ovary.…”

Section: Discussionmentioning

confidence: 84%

“…It secretes hormones, mainly progesterone, which will act to maintain the inner layer of the uterus, the endometrium, to receive and maintain the conceptus. The corpus luteum can remain until late pregnancy or early lactation and can occupy an area of up to 70% in ovarian section (Dorlikar et al, 2013). Thus, in the species P. gymnonotus , it presented a corpus luteum in its initial phase, where the granulosa cells invaded the antrum to start the process of transformation into luteal cells and start the production of hormones, mainly progesterone.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Morphology of the Ovaries, Uterine Tubes and Uterus ofPteronotus gymnonotus(Chiroptera: Mormoopidae)

Costa

Morais

2022

Preprint

View full text Add to dashboard Cite

The present study aimed to characterize the ovarian, tubal and uterine morphology in the insectivorous bat Pteronotus gymnonotus , in specimens collected in the state of Rio Grande do Norte, Brazil. After euthanasia, these organs were histologically processed for inclusion in historesin for morphological and morphometric analysis under light microscopy. The morphological characterization of the ovaries was based on the development of the oocyte and follicle growth, while the uterine tubes were characterized in terms of their anatomy and division of their parts into: infundibulum, ampulla and isthmus, where the height of the tubal epithelium and muscle layer thickness. The analysis of the uterus was based on the formation and thickness of its three layers: endometrium, myometrium and perimetrium. Morphometric analyzes were performed by capturing images of histological slides at different magnifications. The variables were submitted to descriptive analysis, with data expressed as mean and standard deviation. It was observed that the ovaries are bilateral and oval, presenting a squamous to simple cubic epithelium, forming the germinal epithelium, certain stratification regarding the location of the ovarian follicles, where most of the primordial follicles are arranged in the peripheral region of the ovary, however being it is possible to identify many follicles in various stages of maturation in the central region ; the uterus is bicornuate and the layers of the uterus and uterine tubes observed follow the same pattern of other eutherian mammals. This information is important to allow comparisons between species, aiming at knowledge about reproductive morphology in mammals, especially those belonging to the order Chiroptera. Therefore, this research is essential to subsidize conservation measures that protect their natural populations, in an effort to maintain the ecological balance. Keywords: Insectivore bats, Reproductive biology, Ovarian morphometry, Oogenesis.

show abstract

Section: Ovarian Morphologysupporting

confidence: 72%

Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Morphology of the Ovaries, Uterine Tubes and Uterus ofPteronotus gymnonotus(Chiroptera: Mormoopidae)

Costa

Morais

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The distinction of the different types of ovarian follicles found in D. cinerea were estimated based on the histological characteristics observed and already described for other mammals, since the bats present growth and development similar to the other animals belonging to the Class Mammalia (Bernard 1980, Crichton & Krutzsch 2000, Dorlikar et al 2013. Thus, initially there is a Primordial Follicle, which exhibit a single layer of flat cells and when these cells assume a cubic shape, they will originate the Unilaminar Primary Follicle.…”

Section: Methodsmentioning

confidence: 99%

“…Subsequently, the follicles grow and Occurs the agglomeration of the follicular fluid between the follicular cells, forming the Antrum, giving rise to the secondary follicle (Antral Follicle), this one grows more than others and reaching its highest stage of development, it becomes the mature follicle (Preovulatory or Graafian Follicle). After the ovulation process, there is a formation of an endocrine gland called Corpus Luteum (Parrott & Skinner 2000, Hutt et al 2006, Martins et al 2008, Dorlikar et al 2013.…”

Section: Methodsmentioning

confidence: 99%

Analysis of the reproductive stage and ovarian histomorphometry of Dermanura cinerea (Chiroptera: Phyllostomidae) in an Atlantic Forest fragment of Pernambuco, northeastern Brazil

et al. 2018

View full text Add to dashboard Cite

This study aimed to analyze the reproductive stage, histology and morphometry of the ovary of Dermanura cinerea in an Atlantic Forest fragments in the Biological Reserve of Saltinho, Pernambuco, Brazil. Adult females were captured monthly by mist net, during two consecutive nights from June/2014 to November/2015. The meteorological data were provided by the National Institute of Meteorology and grouped together with the reproductive data, in six periods: period I (June to August/2014), period II (September to November/2014), period III (December/2014 to February/2015), period IV (March to May/2015), period V (June to August/2015) and period VI (September to November/2015). The females were classified according to their reproductive stages in: Inactive, pregnant, lactating and postlactating. Among the 25 females caught, 10 inactive females were selected for the histomorphometric analysis of the ovaries and then they were euthanized. After that, the specimens had their ovaries removed, fixed, processed and included in Paraplast. The organs were cut and stained by Hematoxylin - Eosin and the histological slides produced were submitted to the appropriate optical microscope analysis. Each type of ovarian follicle was estimated according to the histological characteristics evidenced for other mammals. In the morphometric analysis, it was considered: The area of the ovary (measured in square millimeter), Quantification of different types of ovarian follicles (unilaminar and multilaminar primary follicles, antral and matures) and corpus luteum, as well as the area of each by those different follicles (measured in square micrometer) The results indicated that 16 females were inactive, 5 were lactating, 4 were pregnant and no post-lactating. The histological analysis revealed that the ovaries of D. cinerea exhibit characteristics, structures and cellular types similar to other mammals. The morphometric data of the study area were statistically evaluated using the Student’s t-test. Therefore, ovarian histomorphometric analysis are very important to infer with greater certainty about the reproduction of a species. Thus, it was observed that females of D. cinerea exhibit two reproductive peaks, that is, they can give birth either at the end of dry periods or from the beginning to the middle of the rainy season. The main feature observed in the ovary of this species, found in the Atlantic Forest area of the state of Pernambuco, is the preparation of the ovarian cortex to ovulate in months of high rainfall throughout the year. Therefore, this species tries to adjust its reproductive period with the variations of the environmental conditions, so that the reproduction might occur during the period more favorable for the maintenance of their offspring.

show abstract

Weight as an indicator of enclosure suitability in Livingstone's fruit bats (Pteropus livingstonii)

Price,

Roberts,

Bennett

et al. 2024

Zoo Biology

View full text Add to dashboard Cite

Obesity is common in zoo animals, and both dietary management and the provision of adequate opportunities for exercise are needed to tackle it. We used 30 years of records from Jersey Zoo to compare the weight and forearm length of wild and captive‐born Livingstone's fruit bats (Pteropus livingstonii), and to assess the impact on weight of enclosure space. The mean capture weight of wild‐caught male Livingstone's bats was 657 g, significantly higher than that of females (544 g). In both wild and captive‐born bats, males had significantly longer forearms than females, but there was no effect of birth location. Males weighed more in the mating season than at other times of year. Both sexes gained more weight during development if born in enclosures that restricted flight rather than a large aviary; this was particularly noticeable in females. After reaching maturity at 3 years, weights of bats born in restricted enclosures continued to increase, reached a peak of over 1000 g at 8−10 years, and then declined in both sexes. The weight of bats born in the aviary remained more stable after the age of three. Like wild bats, adult females born in the aviary weighed less than males. However, females born in restricted enclosures weighed more than males born in the same enclosures. Enclosure designs that maximize opportunities for flight can limit excessive weight gain in captive fruit bats and may therefore improve fitness and health, essential in planning for future reintroduction programs.

show abstract

Morphometric and Histoarchitectural Changes in the Ovary of <i>Pteropus giganteus</i> (Brunnich) During Various Phases of Reproductive Cycle

Cited by 4 publications

References 21 publications

Morphology of the Ovaries, Uterine Tubes and Uterus ofPteronotus gymnonotus(Chiroptera: Mormoopidae)

Morphology of the Ovaries, Uterine Tubes and Uterus ofPteronotus gymnonotus(Chiroptera: Mormoopidae)

Analysis of the reproductive stage and ovarian histomorphometry of Dermanura cinerea (Chiroptera: Phyllostomidae) in an Atlantic Forest fragment of Pernambuco, northeastern Brazil

Weight as an indicator of enclosure suitability in Livingstone's fruit bats (Pteropus livingstonii)

Contact Info

Product

Resources

About