Difference between revisions of "Reptiles and Amphibians Q&A 17"
(Created page with "[[|centre|500px]] <br /> '''These two adult Galapagos tortoises were fed a diet of mixed vegetables, with a preponderance of cabbage, for over one year. All the tortoises withi...") |
|||
| (2 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
| − | + | {{Manson | |
| + | |book = Reptiles and Amphibians Q&A | ||
| + | }} | ||
| + | [[File:Rep 17a.jpg|centre|500px]] | ||
| + | <br> | ||
| + | [[File:Rep 17b.jpg|centre|500px]] | ||
<br /> | <br /> | ||
| Line 11: | Line 16: | ||
|a1= | |a1= | ||
Hypothyroidism leading to the formation of fibrous goitres. | Hypothyroidism leading to the formation of fibrous goitres. | ||
| − | |l1= | + | |l1=Hypothyroidism - Reptiles |
|q2=What causes this condition? | |q2=What causes this condition? | ||
|a2= | |a2= | ||
| Line 17: | Line 22: | ||
This is a condition common to herbivorous reptiles that have evolved in volcanic island habitats in which halogen- (iodine, chlorine, fluorine and bromine) sequestrating plants predominate over those that do not concentrate halogens in their tissues. | This is a condition common to herbivorous reptiles that have evolved in volcanic island habitats in which halogen- (iodine, chlorine, fluorine and bromine) sequestrating plants predominate over those that do not concentrate halogens in their tissues. | ||
| − | |l2= | + | |l2=Hypothyroidism - Reptiles |
|q3=What is the treatment for this disorder? | |q3=What is the treatment for this disorder? | ||
|a3= | |a3= | ||
Administer a source of iodine every five to seven days, eg, sodium- or potassium iodide solution (0.25–0.50mg/kg i/v or orally) or Lugol’s solution (0.5–2.0mg/kg orally). | Administer a source of iodine every five to seven days, eg, sodium- or potassium iodide solution (0.25–0.50mg/kg i/v or orally) or Lugol’s solution (0.5–2.0mg/kg orally). | ||
| − | |l3= | + | |l3=Hypothyroidism - Reptiles |
|q4=What measures can be taken to prevent it? | |q4=What measures can be taken to prevent it? | ||
|a4= | |a4= | ||
| Line 27: | Line 32: | ||
Depending upon their iodine content, a 150–200kg tortoise could be given three to six tablets weekly. | Depending upon their iodine content, a 150–200kg tortoise could be given three to six tablets weekly. | ||
| − | |l4= | + | |l4=Hypothyroidism - Reptiles |
</FlashCard> | </FlashCard> | ||
Latest revision as of 17:26, 28 October 2011
|
This question was provided by Manson Publishing as part of the OVAL Project. See more Reptiles and Amphibians Q&A. |
These two adult Galapagos tortoises were fed a diet of mixed vegetables, with a preponderance of cabbage, for over one year. All the tortoises within the collection who were fed the same diet display similar lesions.
| Question | Answer | Article | |
| What is your diagnosis? | Hypothyroidism leading to the formation of fibrous goitres. |
Link to Article | |
| What causes this condition? | In this instance, the feeding of a diet consisting mostly of cabbage (which contains goitrogens) induces diminished function of the thyroid gland and its synthesis and secretion of thyroxin. This is a condition common to herbivorous reptiles that have evolved in volcanic island habitats in which halogen- (iodine, chlorine, fluorine and bromine) sequestrating plants predominate over those that do not concentrate halogens in their tissues. |
Link to Article | |
| What is the treatment for this disorder? | Administer a source of iodine every five to seven days, eg, sodium- or potassium iodide solution (0.25–0.50mg/kg i/v or orally) or Lugol’s solution (0.5–2.0mg/kg orally). |
Link to Article | |
| What measures can be taken to prevent it? | Supplement the diet with kelp tablets; the dosage of this form of iodine is not critical because kelp is essentially non-toxic when used as a dietary supplement for giant tortoises. Depending upon their iodine content, a 150–200kg tortoise could be given three to six tablets weekly. |
Link to Article | |
