scholarly journals Non-lethal elephant population control methods: Summary of the first workshop of the Elephant Specialist Advisory Group of South Africa

Bothalia ◽  
2018 ◽  
Vol 48 (1) ◽  
Author(s):  
Marion E. Garaï ◽  
Lucy A. Bates ◽  
Henk Bertschinger ◽  
Audrey Delsink ◽  
Yolanda Pretorius ◽  
...  
Keyword(s):  
South Africa ◽  
Zona Pellucida ◽  
Population Control ◽  
Gonadotropin Releasing Hormone ◽  
Advisory Group ◽  
Control Methods ◽  
Releasing Hormone ◽  
Management Interventions ◽  
Elephant Population ◽  
Future Policy

Management interventions are necessary to control elephant numbers within fenced wildlife reserves in South Africa. Use of non-lethal control methods is increasing, but information about their suitability and effects are not widely available. Three such methods are currently available: immunocontraception with porcine zona pellucida vaccine, vasectomy and gonadotropin-releasing hormone vaccine. Here we consolidate what we know about these methods, using published sources and material shared at a workshop held in South Africa in 2016, in order to provide up-to-date information for future policy decisions concerning the use of these methods in South Africa and elsewhere.

Reproduction in dogs part 1: surgical and non-surgical de-sexing options

2020 ◽  
Vol 25 (7) ◽  
pp. 1-9
Author(s):  
Vicki J Adams
Keyword(s):  
Population Control ◽  
Gonadotropin Releasing Hormone ◽  
Common Method ◽  
Potential Health ◽  
Releasing Hormone ◽  
Gonadotropin Releasing Hormone Agonist ◽  
Surgical Methods ◽  
Surgical Options ◽  
Disease Risks ◽  
Control Disease

This article summarises the surgical and non-surgical options for desexing dogs, using standardised terminology by defining the meaning of commonly used terms. Desexing has been historically recommended to help with population control, disease prevention and behaviour modification. Surgical methods of gonadectomy are the most common method for desexing in both owned and unowned dogs, with orchiectomy being the most common method of desexing male dogs. Surgical methods of desexing in females may refer to ovariohysterectomy, ovariectomy, salpingectomy or hysterectomy with or without an ovarian autograft (referred to as a so-called ‘ovary-sparing spay’). Non-surgical desexing methods include three broad categories: hormonal, immunological, and chemical or physical methods. The use of a gonadotropin-releasing hormone agonist as a method of inducing reversible infertility in dogs is discussed in detail, including a review of the physiological effects of surgical gonadectomy compared to a gonadotropin-releasing hormone agonist and potential health effects of each. There is a growing body of literature on the disease risks associated with whether a dog is intact or desexed, and by which method it has been desexed. This will be discussed in the next article.

scholarly journals Distribution and status of the African elephant Loxodonta africana in South Africa, 1652-1992

Koedoe ◽  
1992 ◽  
Vol 35 (1) ◽  
Author(s):  
A.J. Hall-Martin
Keyword(s):  
South Africa ◽  
National Park ◽  
Population Control ◽  
Loxodonta Africana ◽  
Kruger National Park ◽  
African Elephants ◽  
Population Growth Rates ◽  
Elephant Population ◽  
The Impact ◽  
Consequent Increase

The historical decline of African elephants to a low of 120 animals in 1920, and their subsequent recovery to over 10 000 is described for the major populations of South Africa. Population growth rates of 6,8 and 6,7 per annum are derived from census and estimates for the Kruger National Park and the Addo Elephant National Park respectively. The reasons for elephant population control in the Kruger National Park, and the impact of elephants on both the Kruger and Addo environments, are discussed. The translocation of young elephants to found new populations is mentioned. The consequent increase of elephant range and numbers in the next decade to a possible maximum of 31 000 km2 and 13 000 animals, is envisaged.

Sperm to zona pellucida binding depends on the use of a gonadotropin-releasing hormone agonist or a gonadotropin-releasing hormone antagonist

2003 ◽  
Vol 79 (3) ◽  
pp. 648-650 ◽  
Author(s):  
Annika K Schröder ◽  
Beate Schöpper ◽  
Safaa Al-Hasani ◽  
Martin Löning ◽  
Klaus Diedrich ◽  
...  
Keyword(s):  
Zona Pellucida ◽  
Gonadotropin Releasing Hormone ◽  
Releasing Hormone ◽  
Gonadotropin Releasing Hormone Agonist

186: Neoadjuvant Gonadotropin-Releasing Hormone Therapy Before Orchiopexy Improves the Fertility Index in Concomitant Testicular Biopsies

2004 ◽  
Vol 171 (4S) ◽  
pp. 49-49
Author(s):  
Christian Schwentner ◽  
Andreas Lunacek ◽  
Josef Oswald ◽  
Georg Bartsch ◽  
Alfons Kreczy ◽  
...  
Keyword(s):  
Hormone Therapy ◽  
Gonadotropin Releasing Hormone ◽  
Releasing Hormone ◽  
Fertility Index
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