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| Medel, M.D.; Vervoort, W.. |
| Twenty-three species, subspecies or varieties of hydroids of the families Thyroscyphidae and Sertulariidae (Leptolida, Hydrozoa, Cnidaria) are described and figured, originating from north-eastern Atlantic localities visited during the CANCAP and Mauritania-II Expeditions of the Rijksmuseum van Natuurlijke Historie (now Nationaal Natuurhistorisch Museum) in the years 1976-1988 and covering waters around Azores, Canary Islands, Madeira, Cape Verde Islands and the Atlantic off Morocco and Mauritania. Besides notes on the variability of the various species in the large material available, vertical and horizontal distributions are discussed. Observations on the considerable material of Sertularella ellisii (Deshayes & Milne-Edwards, 1836) indicate that... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Leptolida; Sertulariidae; North-eastern Atlantic; Geographical distri- bution.; 42.72. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/317647 |
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| Medel, M.D.; López-González, P.J.. |
| The present study is a first attempt to comparing the hydroid faunas of the various Zoogeographie areas of the Atlantic Ocean. We restricted ourselves to species of the orders Antho- and Leptomedusae, of which 1050 species were taken into account. The classification of zoogeographic areas used follows Ekman and Briggs, with slight modifications; thus, the Strait of Gibraltar is here considered as a separate zoogeographic area due to its character of a transition zone between several areas in the Northeastern Atlantic Region. Species were arranged into Zoogeographic groups to compare the faunal composition of the various Zoogeographic areas. The Dice similarity index was used for each comparison. The fauna of North-eastern Region can be split into three... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Hydrozoa; Zoogeography; Faunal affinities; Atlantic Ocean.; 42.72. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/317893 |
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| Medel, M.D.; Vervoort, W.. |
| Twenty-one (sub)species of Leptolida (Hydrozoa, Cnidaria) of the familes Haleciidae and Campanulariidae are described and figured, originating from collections made during the CANCAP and Mauritania- II expeditions of the Rijksmuseum van Natuurlijke Historie (now Nationaal Natuurhistorisch Museum) to the north-eastern Atlantic in the years 1976-1988, visiting waters around the Azores, Canary Islands, Madeira, Cape Verde Islands and off Morocco and Mauritania. This material largely concerns well known species, the majority of which needs no detailed description. Exceptions are i.a. Halecium liouvillei Billard, 1934, Halecium sibogae marocanum Billard, 1934, Clytia arborescens Pictet, 1893, and Laomedea pseudodichotoma Vervoort, 1959. These species are... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Hydrozoa; Leptolida; Haleciidae; Campanulariidae; North-eastern Atlantic; Geographical distribution; 42.79. |
| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/219433 |
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