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| Parker, H.W.. |
| Thanks to the courtesy of Drs. Boschma and Brongersma the author has been privileged to examine a large series of West African amphibians from the collections of the Royal Museum of Natural History in Leiden. Of the comparatively easily accessible parts of Africa, Liberia is probably the least known, in so far as its herpetological fauna is concerned, and consequently it is not surprising to find that the present material contains much of interest. The following notes concern some of the more obvious points which arise out of the material examined and do not purport to be in any way exhaustive. The author is indebted not only to the gentlemen already mentioned, but also to M. Angel and Mr. Loveridge who have most generously placed at his disposal material... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.82. |
| Ano: 1936 |
URL: http://www.repository.naturalis.nl/record/319427 |
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| Parker, H.W.. |
| The systematic status of the snakes recorded from the area has been reinvestigated, often in the light of new material. Allometric growth is shown to occur in several species and taxonomic errors arising from its previous non-recognition are rectified. The same feature is also used to determine the respective ontogenetic levels of closely allied forms. The fauna of the Sokotra group is shown to have greater relationships with the Palaearctic and Oriental regions than with the Ethiopian and to consist of mainly primitive types; they are assumed to have been isolated in the islands since the mid-Miocene. The mainland fauna, though predominantly Ethiopian, contains a strong northern admixture and this element predominates in the northern coastal plain which... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.82. |
| Ano: 1949 |
URL: http://www.repository.naturalis.nl/record/317866 |
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| Parker, H.W.; Stott, F.C.. |
| ABSTRACT The inshore shoals of basking sharks that appear in spring off the western seabord of Europe have been variously claimed to be part of a seasonal south to north migration, or local, perhaps nuptial, aggregations. The decline in the catches of the Achill Island Fishery in the last decade suggests that the size of the shoals has diminished there. Size/frequency analysis of available records shows a midsummer peak of specimens with a mean length of 3.09 m and a mid-winter peak at 3.52 m; the difference is significant and is ascribed to growth. From this value, coupled with the recorded maximum and minimum sizes, a hypothetical asymptotic growth-curve is calculated. Comparison of this age/length relationship with the observed relationship between... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.81. |
| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/318027 |
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