Post partum reproductive assessment in lowland Tapir (Tapirus terrestris): a case report

Oliveira, Cláudio Alvarenga de; Nogueira, Guilherme de Paula; Castro, João César Bedran de

doi:10.1590/s1413-95962001000600009

Cited by 5 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to Baird's tapir, no marked increases in serum cortisol were associated with parturition in this species. A postpartum assessment of milk progesterone in 1 lowland tapir demonstrated a lactational anestrous of 158 days, which was subsequently followed by a small luteal phase and then a full cycle of 31 days (Oliveira et al 2001). This differs from the Baird's tapir, which exhibits fertile cycles within weeks of giving birth (Brown et al 1994).…”

Section: Lowland Tapirmentioning

confidence: 94%

“…There is limited information on estrous cycle hormone patterns in this species. An evaluation of milk progesterone concentrations in 1 lowland tapir indicated an estrous cycle of 31 days (Oliveira et al 2001). In 1 case report, a single lowland tapir experienced recurrent vaginal prolapses during the estrous period every 38 days over 10 cycles, a condition that was alleviated by bilateral ovariohysterectomy (Weiss et al 2000).…”

Section: Lowland Tapirmentioning

confidence: 99%

See 1 more Smart Citation

A review of the reproductive biology and breeding management of tapirs

Pukazhenthi

Quse

Hoyer³

et al. 2013

Integrative Zoology

View full text Add to dashboard Cite

Tapirs (Tapirus sp.) have been studied extensively in the wild, yet little is known about their fundamental reproductive biology, information that is critical to establishing self-sustaining populations in captivity as a hedge against extinction. This paper reviews information on the reproductive biology of the 4 species of tapirs: Baird's (Tapirus bairdii), lowland (T terrestris), mountain (T pinchaque) and Malayan (T indicus). Both sexes reach puberty between 14 and 48 months of age. Behaviorally, tapirs display few overt signs of estrus, and external signs of pregnancy are not evident until approximately 2 months before parturition. Immunoassay techniques to measure reproductive hormones in blood and urine have been validated for tapirs, which allow monitoring of ovarian cycle activity and pregnancy. Data indicate that females are polyestrous, with an estrous cycle length of approximately 30 days. The exception is the Malayan tapir, which exhibits 2 types of cycles: short (approximately 1 month) and long (approximately 2 months). Gestation length is approximately 13 months and females can conceive at the first post-partum cycle within 1 month after birth. Good quality ejaculates have been obtained via electroejaculation in the Baird's and Malayan tapir and the sperm from Baird's tapir cryopreserved using standard cryodiluents, although more work is needed to optimize these protocols. Given that all 4 species of tapir most likely will continue to be maintained in captivity, effective genetic management is vital for long-term survival. Optimization of assisted reproductive technologies, including sperm cryopreservation and artificial insemination, could benefit the genetic management of tapirs.

show abstract

Section: Lowland Tapirmentioning

confidence: 94%

Section: Lowland Tapirmentioning

confidence: 99%

A review of the reproductive biology and breeding management of tapirs

Pukazhenthi

Quse

Hoyer³

et al. 2013

Integrative Zoology

View full text Add to dashboard Cite

show abstract

“…trichobezoars, hair and food particles; and diospyrobezoars, persimmon fruit (Holloway et al, 1980;Sanders, 2004) and allegedly in fish (Cook et al, 1949, Cuvier et al, 1831de Oliveira et al, 2001, Fisher, 1981Hasbún & Ramos, 1999;Kinsel et al, 2004;Mori & Sforzi, 2013;Schweizer et al, 2005;Sooy et al, 1987;Srivastava & Mahnot, 2001;Tomassini et al, 2019;Williams, 1986;Yasar et al, 2005).…”

Section: Phytobezoars Consist Of Indigestible Vegetable Fibers;mentioning

confidence: 99%

“…Phytobezoars consist of indigestible vegetable fibers; trichobezoars, hair and food particles; and diospyrobezoars, persimmon fruit (Holloway et al, 1980; Sanders, 2004). Phytobezoars have been found in humans, dogs, cats, cattle, buffalo, goats, sheep, antelopes, guanaco, spotted deer Axis axis , Alpine chamois Rupicapra rupicapra , muntjak Muntiacus muntjak , horses Equus , lowland tapirs Tapirus terrestris , pine voles Pitymys nemoralis , crested porcupines Hystrix cristata , reptiles [e.g., crocodile Crocodylus , Olive Ridley Sea Turtle Lepidochelys olivacea ), birds (e.g., cockatiel Nymphicus hollandicus , Micronesian kingfisher Halcyon cinnamomina cinnamomina ) and allegedly in fish (Cook et al, 1949, Cuvier et al, 1831; de Oliveira et al, 2001, Fisher, 1981; Hasbún & Ramos, 1999; Kinsel et al, 2004; Mori & Sforzi, 2013; Schweizer et al, 2005; Sooy et al, 1987; Srivastava & Mahnot, 2001; Tomassini et al, 2019; Williams, 1986; Yasar et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Nondestructive recognition and differentiation of quasi‐spherical structures of biologic interest

Rothschild

Biehler‐Gomez

2021

Intl J of Osteoarchaeology

View full text Add to dashboard Cite

Background Biological findings in archaeological and paleontological contexts are not limited to bones. In particular, biological concretions can present valuable information regarding the health of the organisms under examination. However, these structures are often difficult to recognize and identify. Chemical analyses (e.g., Raman spectroscopy) can allow their identification but they are time‐consuming and destructive techniques, even if minimally so. In this research, the potential of nondestructive high magnification surface microscopy is investigated for the distinction of uroliths from other biological and nonbiological concretions, specifically gallstones, bezoars, gastric pellets, coprolites, eggs, gastroliths and geological concretions. Methods The external surfaces of uroliths, bezoars, gastric pellets, gallstones, coprolites, gastroliths, eggs and geologic concretions were examined microscopically at ×20, ×50 and ×200 magnification. Results Morphological surface appearance of uroliths was independent of producer phylogeny and chemical composition and presented as smooth surfaces with level, faceted or lobulated configurations. Gallstones also presented a large array of shapes with smooth or porous external surfaces. Gastric pellets, bezoars and coprolites could be distinguished from other biological stones by the common presence of hair, sand grains, bone fragments or hair. Presence of uniform pores permitted the recognition of egg shells. Distinguishing gastroliths and geologic concretions requires additional diagnostic criteria. Conclusion High magnification surface microscopy of biological concretions from reference collections permits a better understanding of biological concretions and their normal variation. In addition, it allowed the distinction of uroliths from most biological concretions. Nonetheless, gallstones constitute the major differential diagnosis of uroliths, and destructive chemical analyses may be ultimately required for their distinction.

show abstract

Raman spectroscopic documentation of Oligocene bladder stone

Rothschild

Martin

Anderson

et al. 2013

Naturwissenschaften

View full text Add to dashboard Cite

Discovery of a fossil (30-35 million-year-old) urolith from Early Oligocene deposits in northeastern Colorado provides the earliest evidence for the antiquity of bladder stones. These are spherical objects with a layered phosphatic structure and a hollow center. Each layer is composed of parallel crystals oriented perpendicular to the surface. Macroscopic and microscopic examination and X-ray diffraction analysis, along with comparison with 1,000 contemporary uroliths, were used as evidence in the confirmation of this diagnosis. Raman microspectroscopy verified the presence of organic material between layers, confirming its biologic origin.

show abstract

Post partum reproductive assessment in lowland Tapir (Tapirus terrestris): a case report

Cited by 5 publications

References 0 publications

A review of the reproductive biology and breeding management of tapirs

A review of the reproductive biology and breeding management of tapirs

Nondestructive recognition and differentiation of quasi‐spherical structures of biologic interest

Raman spectroscopic documentation of Oligocene bladder stone

Contact Info

Product

Resources

About