• Title/Summary/Keyword: Reproductive Management

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Phenological Characteristics of Rhododendron Species in Temperate Mixed Broad-leaved Forests of Arunachal Himalaya, India

  • Paul, Ashish;Khan, Mohamed Latif;Das, Ashesh Kumar
    • Journal of Forest and Environmental Science
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    • v.34 no.6
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    • pp.435-450
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    • 2018
  • Phenological events of four Rhododendron tree species (viz. R. arboreum, R. arboreum ssp. delavayi var. delavayi, R. barbatum and R. kesangiae) was monitored in temperate mixed broad-leaved forests of Arunachal Pradesh, India. Phenological events like flower bud formation, flowering, fruit setting, fruit maturing, seed dispersal, leaf bud formation, leaf flushing, and leaf shedding were recorded. Indices i.e., phenophase sequence index (PSI), active phenophasic period of the species (APS) and index of reproductive/vegetative activity (RVA) were also calculated. Present study revealed that bark consistency, growth form and leaf pattern of the studied species have showed variations among the species. Rhododendron species exhibited the phenological events overlapping with other phenophases. The peak flower bud formation was observed during the winter; R. arboreum ssp. delavayi var. delavayi start flowering from December, while the flowering in rest three species exhibited during February to April. Fruit setting occurred during summer to autumn while fruit maturation revealed peak during November. Leaf bud formation illustrated two peaks in April and May, leaf flushing exhibited peak in June, while leaf shedding peaked during October to November. Active phenophasic period of the species were found 12 months, which revealed that species engage in various phenophase activities throughout the year. Phenophase sequence index ranged between 0.8 to 0.9 (PSI ${\geq}0.6$), signifies that species have a sequential arrangement of phenophases. Index of reproductive/vegetative activity of the species exemplified >1, indicate that the reproductive phenophases were dominance over vegetative phenophases. The study have provided substantial insight on the life cycle events of Rhododendron species and ecological approaches for further scientific study with recent climate change and effective management and conservation.

Aspects of the growth and reproductive biology of Oreochromis niloticus (Linnaeus, 1758) in a tropical Soda Lake, Lake Shala, Ethiopia

  • Wagaw, Solomon;Mengistou, Seyoum;Getahun, Abebe
    • Fisheries and Aquatic Sciences
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    • v.25 no.7
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    • pp.380-389
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    • 2022
  • Morphometric relationships, condition factor (CF) and reproductive biology are significant tools in fish stock management, fish biology, physiology, conservation and ecology. Growth and reproductive strategy of Oreochromis niloticus were studied from 343 fish specimens collected from Lake Shala between January and December 2018. Fish samples ranged from 7.7 cm to 33.0 cm in total length (TL) and from 7.80 g to 708.21 g in total weight (TW) were collected using gillnets of 4, 6, 8, 10, and 12 mm mesh sizes. The length-weight relationship of O. niloticus was TW = 0.0104TL3.19, indicating positive allometric growth of the fish. The sex ratio (0.93:1) was insignificant from the ideal fish distribution of 1:1 (χ2 = 0.47, p > 0.05). Mean CF for males, females and combined sexes was 1.04, 1.06 and 1.05, respectively and statistically insignificant (p > 0.05). The spawning peak occurred in July (rainy) and February (dry) periods, as defined by ripe females and the breeding season. Absolute mean fecundity was 806 eggs and correlated positively with TL and TW of the fish (p < 0.05) (F = 0.56TL2.29, R2 = 0.93, p < 0.05; F = 18.83TW0.67, R2 = 0.90, p < 0.05). The study provides the first detailed account of the morphometric relationships and reproductive biology of O. niloticus in Lake Shala, which can be used as baseline information for successive biological-based studies in Soda Lakes of Ethiopia.

Importance and Application of Amphibian Sperm Cryopreservation (양서류 정자 동결보존 기술 개발의 중요성 및 적용)

  • Ji-Eun Lee;Jun-Kyu Park;Yuno Do
    • Journal of Wetlands Research
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    • v.25 no.4
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    • pp.257-266
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    • 2023
  • Amphibian populations are declining globally, pushing many species to the brink of extinction. To promote biodiversity and sustainable management, countries are actively researching amphibian reproductive ecology. Sperm cryopreservation is a crucial assisted reproductive technology that aids in preserving the genetic diversity of amphibians. However, because amphibian sperm cells are sensitive to osmotic stress, the optimal cryopreservation method therefore differs from species to species. This literature review offers an overview of the significance of developing cryopreservation techniques for amphibian conservation and highlights the need to create optimal cryopreservation methods and the introduction of long-term monitoring (e.g., fertilization success and offspring reproduction) to advance cryopreservation technology development. This review can be used as basic research data for amphibian conservation methods.

Relationship between Young Women's Reproductive Health Knowledge, Attitude and Self-efficacy in Luwero District, Uganda (우간다 루웨로 지역 젊은 여성의 성생식보건 지식, 태도 및 자기효능감 간의 관련성)

  • Eun-mi Song;Young-Dae Kwon;Jin-Won Noh
    • Advanced Industrial SCIence
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    • v.3 no.1
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    • pp.37-50
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    • 2024
  • This study explored the link between reproductive health knowledge, attitudes, and self-efficacy in young women from Uganda's Luwero district. A survey was conducted on 82 women in the Luwero region from May to July 2016, and the predictive power of knowledge and attitudes toward self-efficacy was evaluated through multiple linear regression analysis. Results showed positive correlations among these factors, with knowledge and attitude predicting self-efficacy. Specifically, understanding healthy puberty habits and valuing women's roles positively influenced self-efficacy for healthy behaviors. These findings emphasize the need to target these aspects in reproductive health education programs, crucial for addressing adolescent pregnancy and related issues in Uganda's rural areas.

Introducing the general management of glomerular disease from a pediatric perspective based on the updated KDIGO guidelines

  • Seon Hee Lim
    • Childhood Kidney Diseases
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    • v.27 no.2
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    • pp.55-63
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    • 2023
  • In 2021, a new chapter on the general management of glomerulonephritis (GN) was added to the Kidney Disease: Improving Global Outcomes (KDIGO). It emphasizes the importance of early general management of GN for improving long-term kidney outcomes and prognosis. The chapter introduces the management of glomerular diseases in 18 subchapters. Here, kidney biopsy for the diagnosis and evaluation of kidney function and the management of complications, such as hypertension, infection, and thrombosis, are presented. Moreover, the adverse effects of glucocorticoids and immunosuppressive therapy, which are commonly used drugs for glomerular disease, are mentioned, and a guideline for drug selection is presented. Each subtheme focused on items reflecting the interpretation of the "practice points" of the expert working group are introduced. In this review of the general treatment for GN in the KDIGO guidelines, excluding pregnancy and reproductive health, we focused on and compared various references pertaining to pediatric GN management.

Fertility preservation for patients with gynecologic malignancies: The Korean Society for Fertility Preservation clinical guidelines

  • Lee, Sanghoon;Kim, Seul Ki;Hwang, Kyung Joo;Kim, Tak;Kim, Seok Hyun
    • Clinical and Experimental Reproductive Medicine
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    • v.44 no.4
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    • pp.175-180
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    • 2017
  • Fertility preservation plays a central role in cancer care since an increasingly large number of cancer patients are surviving as a result of improvements in diagnostic and therapeutic strategies. Physicians who take part in the initial diagnosis and management of gynecologic cancer should understand the importance of fertility preservation. Since indications for fertility preservation are limited to early-stage gynecologic cancer, a surgeon must carefully consider each indication. Before performing fertility-sparing surgery, health professionals should compare its oncologic and pregnancy outcomes with those of other standard treatments. Individualized treatment strategies should be delivered depending on the patient's situation, and physicians should provide timely information and appropriate counseling.

Empty follicle syndrome

  • Kim, Jee Hyun;Jee, Byung Chul
    • Clinical and Experimental Reproductive Medicine
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    • v.39 no.4
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    • pp.132-137
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    • 2012
  • Empty follicle syndrome (EFS) is a condition in which no oocytes are retrieved after an apparently adequate ovarian response to stimulation and meticulous follicular aspiration. EFS can be classified into 'genuine' and 'false' types according to hCG levels. It is a rare condition of obscure etiology. The existence of genuine EFS has been questioned and is still controversial. The limitation around EFS is that the definition of EFS is obscure. Management of patients with EFS is a challenge to physicians. No single treatment is known to be universally effective. However, patients should be adequately informed regarding the importance of correct hCG administration because improper hCG administration is a common and preventable cause of EFS. EFS is a syndrome that deserves additional study because such investigation could lead to a further understanding of ovarian biology and infertility.

A Case of Leiomyoma of The Lateral Vaginal Wall (질 측벽에 발생한 평활근종 1예)

  • Park, Sung-Chul;Lee, Doo-Jin;Lee, Sung-Ho;Park, Yoon-Ki
    • Journal of Yeungnam Medical Science
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    • v.25 no.2
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    • pp.124-127
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    • 2008
  • Leiomyomas are common in the myometrial layer of the uterus, though they are rarely found in other reproductive organs. Leiomyomas are benign, hormone-sensitive smooth muscle tumors. They develop during the reproductive years and regress after menopause. Preoperative diagnosis is difficult to make. We present a case of a 54-year-old woman with a vaginal wall tumor. The management in this case included surgical excision. Histologic examination definitively confirmed the diagnosis of a vaginal leiomyoma. We report the details of this case along with a brief review of the literature.

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Inguinal Varicocelectomy Under Local Anesthesia (국소마취를 통한 정계정맥류 제거술)

  • Myeong, S.C.;Kim, W.B.;Lee, D.H.;Kim, Y.S.
    • Clinical and Experimental Reproductive Medicine
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    • v.24 no.3
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    • pp.341-345
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    • 1997
  • The management of varicoceles was performed on 24 patients with testicular dragging pain and/or left lower abdominal pain under local anesthesia. The surgery was completed within 20 to 45 minites, postoperative complications were severe cord edema 3 cases, wound infection 1 case, epididymitis 1 case, and postoperative anesthetic duration was 90 to 150 minites. Therefore, these procedures is cost effective and safe surgical method.

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Reproduction and distribution of Chionoecetes crabs (C. opilio and C. japonicus) in the East Sea (동해에 서식하는 대게류(Chionoecetes spp.)의 재생산 및 분포 특성)

  • Cha, Hyung Kee;Yang, Jae Hyeong;Lee, Sung Il;Yoon, Sang Chul
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.47 no.5
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    • pp.637-644
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    • 2014
  • Two Chionoecetes crabs, C. opilio and C. japonicus are primary targets of trap fisheries in the East Sea. To promote the sustainable management of these species, we investigated their reproductive biology and spatial distribution based on samples collected in standardized traps in the coastal waters of eastern Korea from September 2007 to August 2008. The estimated spawning season of C. opilio was March-April, whereas that of C. japonicus continued year-round. The estimated molting period of both species was September-October. Fecundity of C. opilio was proportional to female, size, ranging from 44,791 to 151,538 eggs, and the estimated body size at 50% sexual maturity was 63.9 mm carapace width. Egg bearing female C. opilio were mostly collected depths of 200-300 m, particularly off Hupo and Chuksan, suggesting that these areas are their major spawning grounds. In contrast, female C. japonicus were mostly collected at depths of 400-600 m, peaking at 600 m. The species-specific catch rate was higher for C. opilio above 400 m, similar at ca. 450 m, and higher for C. japonicus below 500 m. These vertical differences indicate apparent spatial segregation of the species, suggesting that spatially-explicit fisheries management plans may be necessary for mitigating conflicts between the respective crab fisheries and maintaining these crabs.