scholarly journals Miscellaneous Studies on the Iodine and Goitre Problem in New Zealand

1933 ◽  
Vol 33 (1) ◽  
pp. 55-79 ◽  
Author(s):  
C. E. Hercus ◽  
H. A. A. Aitken
Keyword(s):  
New Zealand ◽  
Thyroid Gland ◽  
Mental Hospital ◽  
Pacific Coast ◽  
Direct Action ◽  
Iodine Content ◽  
Similar Species ◽  
The Pacific ◽  
Inorganic Iodine

1. Methods for the estimation of iodine in natural products are described.2. Common sea weeds on the Pacific coast of Otago have an iodine content of the same order as similar species on the Pacific coast of British Columbia.3. In Cystophora retroflexa, which contains over 0·1 per cent, of iodine, 70–80 per cent, of the iodine appears to be in inorganic or loosely bound combination. Precipitation and colour tests indicate that di-iodotyrosine is also present.4. Observations are recorded of the iodine content of kelp-feeding and other fish.5. Administration of anaesthetics produces fluctuations in the concentration of blood iodine in rabbits, the effect persisting after removal of the thyroid gland. Experiments in vitro suggest that only in the case of inorganic iodine could a redistribution of iodine between tissues and serum be brought about by the direct action of anaesthetics.6. New Zealand cabbage possesses goitrigenous properties for rabbits but in a much smaller degree than American cabbage.7. The urinary excretion of Samoans is compared with that of inhabitants of Christchurch Mental Hospital.8. The incidence and course of development of goitre at Christchurch Mental Hospital is discussed.9. Values are given for the iodine content of Otago pigs' thyroids.

STUDIES OF IODINE METABOLISM IN ICELAND

1964 ◽  
Vol 46 (4) ◽  
pp. 679-683 ◽  
Author(s):  
W. D. Alexander ◽  
Th. Veiger Gudmundsson ◽  
M. M. Bluhm ◽  
R. McG. Harden
Keyword(s):  
Thyroid Gland ◽  
Iodine Content ◽  
Iodine Uptake ◽  
Hormone Production ◽  
High Iodine ◽  
Iodine Level ◽  
Iodine Metabolism ◽  
Inorganic Iodine

ABSTRACT The relation between plasma inorganic iodine level, thyroid clearance and absolute iodine uptake of the thyroid gland has been studied in Iceland and compared with results obtained in Glasgow using identical methods. In Iceland the plasma inorganic iodine (PII) is higher than in Glasgow due to the high iodine content of the diet and the thyroid clearance lower. This adjustment is, however, incomplete, relatively high PII levels being associated with a low thyroid clearance and a raised absolute uptake by the thyroid. There was no evidence of increased hormone production as reflected in the serum PBI.

New Zealand exports: Pseudosphaeroma Chilton, 1909 (Isopoda: Sphaeromatidae), a Southern Hemisphere genus introduced to the Pacific coast of North America

Zootaxa ◽  
2008 ◽  
Vol 1908 (1) ◽  
pp. 51-56 ◽  
Author(s):  
NIEL L. BRUCE ◽  
REGINA WETZER
Keyword(s):  
New Zealand ◽  
North America ◽  
Southern Hemisphere ◽  
San Francisco ◽  
Coastal Waters ◽  
Pacific Coast ◽  
First Record ◽  
The Pacific ◽  
First Time ◽  
Coast Region

Collections made along the coast of California have revealed the presence of a species of Pseudosphaeroma Chilton, 1909, a genus common in New Zealand coastal waters. The genus is entirely Southern Hemisphere in distribution, and this record reports the introduction of a species of Pseudosphaeroma into the San Francisco and Central Coast region of California, the first reported occurrence of the genus as an invasive taxon, and the first record of the genus from the Northern Hemisphere. The genus is also recorded for the first time from the Galapagos and Argentina.

Calcium and metabolism of I131 in rats and homogenates of rat thyroid

1961 ◽  
Vol 200 (5) ◽  
pp. 1023-1026 ◽  
Author(s):  
Yaro Ribeiro Gandra ◽  
John G. Coniglio
Keyword(s):  
Thyroid Tissue ◽  
Iodine Content ◽  
In Vitro Studies ◽  
Iodine Uptake ◽  
Total Iodine ◽  
Organic Iodine ◽  
Free Iodine ◽  
Inorganic Iodine ◽  
Rat Thyroid

The goitrogenic effect of calcium was studied by the use of I131 in intact rats and in rat thyroid slices. Rats receiving excess dietary calcium had larger thyroids than controls. Enlargement of the thyroid was accompanied by increased content of inorganic iodine and decreased content of organic iodine. In vitro studies showed that thyroid enlargement was associated with greater total iodine uptake. Addition of calcium to the incubation medium decreased the total iodine uptake of thyroid slices. The reduction occurred as a consequence of interference with the conversion of inorganic iodine to organic iodine. No decrease in inorganic iodine content was observed. The ratios of bound iodine to free iodine were constantly smaller in the thyroid groups receiving calcium supplement. The results of the in vitro studies suggest that calcium interference is due, at least in part, to a direct effect on thyroid tissue.

Southern Australian species of Polysiphonia Greville (Rhodophyta)

1979 ◽  
Vol 27 (4) ◽  
pp. 459 ◽  
Author(s):  
HBS Womersley
Keyword(s):  
New Zealand ◽  
Species Delimitation ◽  
West Indies ◽  
Pacific Coast ◽  
Critical Study ◽  
Small Species ◽  
Widespread Distribution ◽  
Australian Species ◽  
The Pacific ◽  
Lateral Branches

Twenty-six species of Polysiphonia are recognized from the coast of southern Australia. Their relationships are discussed, their distribution outlined and ecological notes are given. Characters found to be satisfactory for species delimitation include the number of pericentral cells. presence or absence and degree of cortication, whether or not rhizoids are cut off from the parent pericentral cells, the origin of lateral branches near apices (whether from the basal cell of trichoblasts or independent of them), the habit of the thallus, and dimensions and proportions of the thallus and segments of the branches. The presence and frequency of trichoblasts (or scar cells) may be characteristic but can vary with activity of growth of the thallus in some species. Cystocarps offer few characters, though the degree of enlargement of the ostiolar cells may be useful in some species. In male plants, satisfactory characters are whether the spermatangial branch replaces the whole trichoblast or only one basal furcation, and the presence or not of sterile apical cells. The form of the tetrasporangial branchlets and arrangement of tetrasporangia are often useful. Of the 26 species, 17 belong to subgenus Oligosiphonia and nine to subgenus Polysiphonia. Four species (P. scopulorum, P. subtilissima, P. sertularioides and P. brodiaei) are species of widespread distribution, the last-named possibly spread by shipping. One species (P. pungens) is known from the Pacific Coast of Canada and now from the State of Victoria. Some 17 species appear to be restricted to southern Australia, including I1 species newly described (P. haplodasyae, P. shepherdii, P. brevisegmenta, P. amphibolis, P.perriniae. P.propagulqera, P. australiensis, P. abscissoides, P. teges, P. constricta and P. adamsiae). Two species (P. decipiens, P. isogona) occur in southern Australia, New Zealand, and possibly subantarctic regions, while two others (P. abscissoides, P. adamsiae) occur both in New Zealand and in southern Tasmania. One species (P. haplodasyae) is a very small species apparently confined to its host Haplodasya. It appears that P. mollis has been recorded incorrectly from various other countries, and clearly much more critical study of the species of Polysiphonia is needed, especially of early species described from the Mediterranean and West Indies.

A new species of Protium (Burseraceae) from the Pacific Coast of Costa Rica

Phytotaxa ◽  
2020 ◽  
Vol 434 (2) ◽  
pp. 183-194
Author(s):  
RICARDO DE OLIVEIRA PERDIZ ◽  
DOUGLAS C. DALY ◽  
ALBERTO VICENTINI ◽  
PAUL V.A. FINE
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Pacific Coast ◽  
Similar Species ◽  
South American ◽  
Distribution Map ◽  
South American Species ◽  
The Pacific ◽  
A New Species

Protium santamariae is described and illustrated. The new species is restricted to the Pacific Coast of Costa Rica but shares morphological similarities with two South American species, P. kleinii and P. krukoffii. We provide a description, a distribution map, notes on its taxonomy, and a key to distinguish it from morphologically similar species.

Philodendron fibraecataphyllum (Araceae), a new species from the lowlands in Western Colombia and Ecuador

Phytotaxa ◽  
2016 ◽  
Vol 252 (2) ◽  
pp. 159
Author(s):  
M. MARCELA MORA ◽  
THOMAS B. CROAT
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Similar Species ◽  
The Pacific ◽  
A New Species

We describe a new species of Philodendron subgenus Philodendron from the lowlands of the Pacific Coast of Colombia and Ecuador. The new species is compared with P. acuminatissimum and P. balaoanum, two similar species from western Ecuador.

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