Reproduction in female Chalinolobus morio (Gray) (Vespertilionidae) in South-Western Australia

1981 ◽  
Vol 29 (3) ◽  
pp. 305 ◽  
Author(s):  
DJ Kitchener ◽  
P Coster
Keyword(s):  
Reproductive Cycle ◽  
Western Australia ◽  
Reproductive Organs ◽  
Museum Specimens ◽  
Histological Techniques ◽  
The Right ◽  
Uterine Glands

The reproductive cycle of C. morio is outlined from examination of reproductive organs in situ and from histological techniques on Museum specimens collected in south-western Australia over the last 46 years. Changes in ovaries, endometria (and glands), epithelia lining tracts and Bartholin's glands are described. C. morio is monoestrous. It copulates in autumn and stores sperm in oviducts and uterine glands until ovulation in winter. Both ovaries are functional. Trans-uterine migration of the developing zygote is recorded. It normally gives birth to a single young, although occasionally to twins, between mid-September and mid-November. In the case of twins both uterine horns are gravid, otherwise only the right horn is gravid.

Reproduction in the Female White-Striped Mastiff Bat, Tadarida australis (Gray) (Molossidae)

1982 ◽  
Vol 30 (1) ◽  
pp. 1 ◽  
Author(s):  
DJ Kitchener ◽  
CJ Hudson
Keyword(s):  
Reproductive Tract ◽  
Reproductive Organs ◽  
Uterine Horn ◽  
Museum Specimens ◽  
Histological Techniques ◽  
Lactating Females ◽  
Young Of The Year ◽  
The Right ◽  
Reproductive Phases

The reproductive cycle of female T, australis is outlined from examination of reproductive organs in situ and from histological techniques on museum specimens collected in Australia, south of latitude 22�S., over the last 88 years. Features of the reproductive tract and ovaries during important repro- ductive phases are described. There is a marked asymmetry of the reproductive organs, only the right ovary and uterine horn being functional. T. australis is monoestrous; there is no indication of marked differences in the timing of reproductive phases between regional populations. A single, deeply embed- ded corpus luteum occupies up to 60% of the ovary and degenerates at about the time of parturition. Apparently, most females, including young of the year, become pregnant each year, and give birth to a single young, usually between mid-December and late January, although occasionally as late as the end of February. Most young are weaned by early May. There is a short anoestrus, which is probably restricted to early lactating females, followed by a relatively long pro-oestrus. Copulation, ovulation and fertilization occur around late August. There is no evidence of hibernation.

Reproduction in female Eptesicus regulus (Thomas) (Vespertilionidae), in south-western Australia

1978 ◽  
Vol 26 (2) ◽  
pp. 257 ◽  
Author(s):  
DJ Kitchener ◽  
SA Halse
Keyword(s):  
Reproductive Cycle ◽  
Western Australia ◽  
Museum Specimens ◽  
Histological Techniques ◽  
The Right

The reproductive cycle of female Eptesicus regulus is outlined from histological techniques on museum specimens collected in south-western Australia over the last 15 years. E. regulus is monoestrous and gives birth to a single young in November or December. It copulates in autumn and stores sperm over winter. Ovulation and fertilization is at the end of winter. Both ovaries are functional but pregnancy occurs only in the right horn.

Reproduction in female gould's wattled bat, Chalinolbus gouldii (Gray) (Vespertilionidae), in Western Australia

1975 ◽  
Vol 23 (1) ◽  
pp. 29 ◽  
Author(s):  
DJ Kitchener
Keyword(s):  
Western Australia ◽  
Reproductive Organs ◽  
Northern Region ◽  
Late Winter ◽  
Corpora Lutea ◽  
The South ◽  
West Region ◽  
South West ◽  
Corpus Uteri ◽  
Uterine Glands

Reproductive organs of female C. gouldii and changes in the ovaries, uterine horns, corpus uteri and vagina during the reproductive cycle are described. In the south-west of Western Australia, C. gouldii is monoestrous with pro-oestrus from January to March or April. Females are inseminated at the beginning of winter (a late winter insemination may also occur). Sperm is stored over winter in the core of a vaginal plug, in uterine glands, and in the uterine part of the oviducts. Ovulation and fertilization begin at the end of winter, from two to nine ova being shed from each ovary. Corpora lutea may be deeply embedded in the ovaries and ovulation apparently causes considerable break-down of capillaries at the point of rupture. Pregnancies occur in both horns and twinning is the rule. Gestation lasts about 3 months. After parturition there is a rapid involution of uterine horns and vagina, followed by a brief lactation anoestrus. The beginning of the period of births varies with latitude. In the south-west region it commences late November or early December; in the central region late (and possibly early) October or early November; in the northern region late September or early October.

scholarly journals EXPRESS: Chronic thromboembolic pulmonary hypertension following pulmonary embolism with a right ventricular thrombus: A report of two cases

2021 ◽  
pp. 204589402110136
Author(s):  
Tailong Zhang ◽  
Weitao Liang ◽  
Longrong Bian ◽  
Zhong Wu
Keyword(s):  
Pulmonary Hypertension ◽  
Right Ventricular ◽  
Chronic Thromboembolic Pulmonary Hypertension ◽  
Imaging Features ◽  
Pulmonary Endarterectomy ◽  
Right Heart ◽  
Thromboembolic Pulmonary Hypertension ◽  
The Right ◽  
Cardiac Masses

Right heart thrombus (RHT) accompanied by chronic thromboembolic pulmonary hypertension (CTEPH) is a rare entity. RHT may develop in the peripheral veins or in situ within the right heart chambers. The diagnosis of RHT is challenging, since its symptoms are typically non-specific and its imaging features resemble those of cardiac masses. Here, we report two cases of RHT with CTEPH that presented as right ventricular masses initially. Both patients underwent simultaneous pulmonary endarterectomy (PEA) and resection of the ventricular thrombi. Thus, when mass-like features are confirmed by imaging, RHT should be suspected in patients with CTEPH, and simultaneous RHT resection is required along with PEA.

A Neo-Assyrian statue from Til Barsib

Iraq ◽  
1996 ◽  
Vol 58 ◽  
pp. 79-87
Author(s):  
Arlette Roobaert
Keyword(s):  
Iron Age ◽  
Lower Portion ◽  
Maximum Height ◽  
Clear Indication ◽  
Large Hole ◽  
Relative Placement ◽  
The Right ◽  
As If ◽  
Medium Texture

During the 1993 season of excavations at Tell Ahmar, three pieces of a life-size basalt statue were found in a pit dug into one of the large walls surrounding an Iron Age vaulted tomb (Fig. 1). The head, the tors o and the lower part fitted together perfectly. When correctly assembled, these three pieces formed the figure of a standing beardless man with clasped hands (Fig. 2a−b). Only the feet were missing. The maximum height of the reconstructed statue is 1.45m. It was clear from the damage to portions of its body that the statue had been deliberately broken in antiquity. Details, such as a large hole on the right side of the chest, a smaller one on the top of the head and, above all, the defacement of the head suggest that the statue may have actually been “killed”.All three pieces of the statue, which was carved out of a blue greyish basalt of medium texture, were found lying on their backs (Fig. 4). The head lay next to the lower part of the statue, but was buried in a slightly deeper position. The relative placement of these fragments seems to be a clear indication that the statue was not knocked down at this particular spot, but was brought to this location in separate pieces, perhaps with the deliberate intention of burying them.The head was cut off as if the statue had been decapitated. The torso was separated from the lower portion of the statue by an oblique cut that divided the figure just below the waist. The cut runs downwards from the back and continues underneath the clasped hands at the front, leaving the hands almost completely undamaged. The lower part of the statue seems to have been separated from the missing feet by a horizontal cut. This may indicate that the base of the statue was left in situ, probably because it was solidly set in the ground.

scholarly journals Distribution of Potato spindle tuber viroid in Reproductive Organs of Petunia During Its Developmental Stages

2014 ◽  
Vol 104 (9) ◽  
pp. 964-969 ◽  
Author(s):  
Yosuke Matsushita ◽  
Shinya Tsuda
Keyword(s):  
Developmental Stages ◽  
Cell Movement ◽  
Seed Transmission ◽  
Potato Spindle Tuber Viroid ◽  
Reproductive Organs ◽  
Infected Male ◽  
Infected Female ◽  
Reproductive Tissues ◽  
Healthy Female

Embryo infection is important for efficient seed transmission of viroids. To identify the major pattern of seed transmission of viroids, we used in situ hybridization to histochemically analyze the distribution of Potato spindle tuber viroid (PSTVd) in each developmental stage of petunia (flowering to mature seed stages). In floral organs, PSTVd was present in the reproductive tissues of infected female × infected male and infected female × healthy male but not of healthy female × infected male before embryogenesis. After pollination, PSTVd was detected in the developed embryo and endosperm in all three crosses. These findings indicate that PSTVd is indirectly delivered to the embryo through ovule or pollen during the development of reproductive tissues before embryogenesis but not directly through maternal tissues as cell-to-cell movement during embryogenesis.

The Evolution of Asymmetries in the Tropical Cyclone Boundary Layer Wind Field during Landfall

2021 ◽  
Keyword(s):  
Boundary Layer ◽  
Tropical Cyclone ◽  
Wind Field ◽  
Surface Wind ◽  
Frictional Stress ◽  
Homogeneous Surface ◽  
Sudden Decrease ◽  
The Right ◽  
Tropical Cyclone Boundary Layer

Abstract The evolution of the tropical cyclone boundary layer (TCBL) wind field before landfall is examined in this study. As noted in previous studies, a typical TCBL wind structure over the ocean features a supergradient boundary layer jet to the left of motion and Earth-relative maximum winds to the right. However, the detailed response of the wind field to frictional convergence at the coastline is less well known. Here, idealized numerical simulations reveal an increase in the offshore radial and vertical velocities beginning once the TC is roughly 200 km offshore. This increase in the radial velocity is attributed to the sudden decrease in frictional stress once the highly agradient flow crosses the offshore coastline. Enhanced advection of angular momentum by the secondary circulation forces a strengthening of the supergradient jet near the top of the TCBL. Sensitivity experiments reveal that the coastal roughness discontinuity dominates the friction asymmetry due to motion. Additionally, increasing the inland roughness through increasing the aerodynamic roughness length enhances the observed asymmetries. Lastly, a brief analysis of in-situ surface wind data collected during the landfall of three Gulf of Mexico hurricanes is provided and compared to the idealized simulations. Despite the limited in-situ data, the observations generally support the simulations. The results here imply that assumptions about the TCBL wind field based on observations from over horizontally-homogeneous surface types - which have been well-documented by previous studies - are inappropriate for use near strong frictional heterogeneity.

scholarly journals Young Stages of Zeugopterus punctatus

1894 ◽  
Vol 3 (3) ◽  
pp. 202-205 ◽  
Author(s):  
J. T. Cunningham
Keyword(s):  
Frontal Bone ◽  
The Other ◽  
Terminal Portion ◽  
Facial Region ◽  
The Core ◽  
Dorsal Fin ◽  
Undifferentiated Cells ◽  
Auditory Region ◽  
The Right

On May 4th of the current year a number of small Pleuronectids were captured by the hand in a pool left by the ebb tide at Plymouth Breakwater, and brought to me alive. Two of them were very transparent, and, from their habit of lying on the right side when at rest, evidently sinistral forms. One of them was almost perfectly symmetrical; while in the other the torsion of the facial region and eyes had commenced. The pigmentation had the form of interrupted transverse bands, which were most conspicuous on the dorsal and ventral fins; on the dorsal fin seven bands were indicated. The terminal portion of the original trunk, containing the notochord, was seen at the upper edge of the caudal fin. The neurochord was covered with pigment, forming a very distinct band, situated, however, not in the skin, but in the connective tissue surrounding the neurochord or spinal cord. The mouth was large, and the snout upturned. The pectoral fin was large, the pelvic small. But the most important characteristic was the presence of two straight spines projecting laterally from the auditory region. These have been called otocystic spines by Prof. McIntosh, but I think they would be more appropriately described as periotic spines, as they are evidently projections of the periotic cartilage or bone; to which particular bones of the periotic region they belong has not been determined. Mr. Holt cut sections of the spines in situ, and found that they consisted of a knob of periotic cartilage passing into a mass of undifferentiated cells, the whole forming the core of a dermal spine consisting of hyaline ossified tissue. In my specimens I observed a third spine, much smaller, situated in the region of the frontal bone, behind and above the eye; it was visible in both the stages.

Outbreak densities of the coral predator Drupella in relation to in situ Acropora growth rates on Ningaloo Reef, Western Australia

Coral Reefs ◽  
2018 ◽  
Vol 37 (4) ◽  
pp. 985-993 ◽  
Author(s):  
C. Bessey ◽  
R. C. Babcock ◽  
D. P. Thomson ◽  
M. D. E. Haywood
Keyword(s):  
Western Australia ◽  
Growth Rates ◽  
Ningaloo Reef
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