Iodine as a possible controlling nutrient for elephant populations

The geography and physiology of iodine deficiency in humans and domestic ungulates suggests that the nutritional content of ground water may hold a key to humane and efficient management of elephant populations. Artificial bore hole water in dry climates in southern Africa appears to be, on the av...

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Main Author: Antoni Milewski
Format: Article
Language:English
Published: IUCN 2000-06-01
Series:Pachyderm
Online Access:https://pachydermjournal.org/index.php/pachyderm/article/view/1001
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author Antoni Milewski
author_facet Antoni Milewski
author_sort Antoni Milewski
collection DOAJ
description The geography and physiology of iodine deficiency in humans and domestic ungulates suggests that the nutritional content of ground water may hold a key to humane and efficient management of elephant populations. Artificial bore hole water in dry climates in southern Africa appears to be, on the average, a good supplement of this easily leached element., an may have inadvertently boosted the reproductive rates of elephants in several conservation areas. Elephant are likely to be limited by deficiency of iodine: their plant foods are deficient in this element relative to the hormonal requirements associated with exceptional brain and thyroid size. Extrapolation from domestic ecosystems suggests elephants exceed meduim sized wild herbivores in the sensitivty of their reproductive rates to subclinical deficiency of iodine. The great variation iodine concentrations between adjacent aquifers suggests an approach to population control: closure of iodine rich bole holes in overpopulated areas may reduce rates of sexual maturation, conception, birth and weaning with a minimum artifical distress to adults or surviving juveniles.
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spelling doaj-art-565ee87f3e804edc93873546be565c402025-08-20T03:48:23ZengIUCNPachyderm1026-28811683-50182000-06-0128110.69649/pachyderm.v28i1.1001Iodine as a possible controlling nutrient for elephant populationsAntoni Milewski The geography and physiology of iodine deficiency in humans and domestic ungulates suggests that the nutritional content of ground water may hold a key to humane and efficient management of elephant populations. Artificial bore hole water in dry climates in southern Africa appears to be, on the average, a good supplement of this easily leached element., an may have inadvertently boosted the reproductive rates of elephants in several conservation areas. Elephant are likely to be limited by deficiency of iodine: their plant foods are deficient in this element relative to the hormonal requirements associated with exceptional brain and thyroid size. Extrapolation from domestic ecosystems suggests elephants exceed meduim sized wild herbivores in the sensitivty of their reproductive rates to subclinical deficiency of iodine. The great variation iodine concentrations between adjacent aquifers suggests an approach to population control: closure of iodine rich bole holes in overpopulated areas may reduce rates of sexual maturation, conception, birth and weaning with a minimum artifical distress to adults or surviving juveniles. https://pachydermjournal.org/index.php/pachyderm/article/view/1001
spellingShingle Antoni Milewski
Iodine as a possible controlling nutrient for elephant populations
Pachyderm
title Iodine as a possible controlling nutrient for elephant populations
title_full Iodine as a possible controlling nutrient for elephant populations
title_fullStr Iodine as a possible controlling nutrient for elephant populations
title_full_unstemmed Iodine as a possible controlling nutrient for elephant populations
title_short Iodine as a possible controlling nutrient for elephant populations
title_sort iodine as a possible controlling nutrient for elephant populations
url https://pachydermjournal.org/index.php/pachyderm/article/view/1001
work_keys_str_mv AT antonimilewski iodineasapossiblecontrollingnutrientforelephantpopulations