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  • 1
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    In:  Zoologische Mededelingen (00240672) vol.72, 1-10 (1998) p.29
    Publication Date: 2007-01-23
    Description: A faunistic study of the family Haleciidae from the Strait of Gibraltar and nearby areas has been made; seven species are described, figured and discussed. Information about the zoogeographical distribution, and conditions of substrates are contributed. A key to distinguish the species of this family from the seas of the Iberian Peninsula is presented, and the Iberian Haleciidae are compared with those from the Mediterranean and the British Isles.
    Keywords: Cnidaria ; Hydrozoa ; Leptolida ; Haleciidae ; Strait of Gibraltar ; geographical distribution ; 42.79
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 2
    Publication Date: 2024-01-12
    Description: 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 described in more detail as their distributional area is extended. Of all species extensive literature references are given and the geographical distribution is discussed in detail.
    Keywords: Cnidaria ; Hydrozoa ; Leptolida ; Haleciidae ; Campanulariidae ; north-eastern Atlantic ; geographical distribution
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
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    In:  Zoologische Mededelingen vol. 72, 1-10, pp. 29-50
    Publication Date: 2024-01-12
    Description: A faunistic study of the family Haleciidae from the Strait of Gibraltar and nearby areas has been made; seven species are described, figured and discussed. Information about the zoogeographical distribution, and conditions of substrates are contributed. A key to distinguish the species of this family from the seas of the Iberian Peninsula is presented, and the Iberian Haleciidae are compared with those from the Mediterranean and the British Isles.
    Keywords: Cnidaria ; Hydrozoa ; Leptolida ; Haleciidae ; Strait of Gibraltar ; geographical distribution
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 4
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    In:  Zoologische Verhandelingen vol. 323 no. 13, pp. 155-168
    Publication Date: 2024-01-12
    Description: 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.\nThe fauna of North-eastern Region can be split into three groups of similarity: 1) that of the Mediterranean and Lusitanian Provinces plus the Boreal Subregion, 2) that of the Strait of Gibraltar and the Mauritanian Province, and 3) that of the Senegalian Subregion (probably due to the lack of knowledge of its fauna). Just like in Senegalian Subregion, the South-eastern Atlantic Region takes an isolated position (presumably at least in part because the vast majority of data is from South Africa alone).\nIn the North-western Region, the North American and Caribbean Provinces are closely related to each other and to the Brazilian Subregion. The Arctic and Antarctic (together with the Argentinian Subregion) are the most isolated regions.\nAs a general rule, widely distributed species dominate in each region. In the North-eastern Region, the number of such species increases from higher latitudes to the Equator. In the Mediterranean, their number decreases in favour of endemic species. The fauna of the Strait of Gibraltar is more related to that of the Atlantic part of the North-eastern Region than to that of the Mediterranean Province. The high number of endemics in the South-eastern Region and in the Caribbean Province is remarkable. It is also noticeable that the Brazilian Province shares more species with the North-western Region than with the South-eastern Region. The Antarctic presents a similar percentage of endemics as the Arctic.\nSome distribution patterns of Antho- and Leptomedusae can be explained by the general current system in the Atlantic Ocean.
    Keywords: Hydrozoa ; zoogeography ; faunal affinities ; Atlantic Ocean.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 5
    Publication Date: 2024-01-12
    Description: 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 this species cannot be separated from Sertularella fusiformis (Hincks, 1861); both species are consequently merged under the oldest available name: Sertularella ellisii (Milne Edwards & Haime, 1836). Also included are the European records of Sertularella gaudichaudi Auct., not to be confused with Sertularella gaudichaudi (Lamouroux, 1824) from the Falkland Islands. Sertularella unituba Calder, 1991, is recorded from many localities in the Cape Verde Islands region; these records represent the first from the eastern Atlantic.
    Keywords: Cnidaria ; Hydrozoa ; Leptolida ; Sertulariidae ; north-eastern Atlantic ; geographical distri- bution.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 6
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    In:  Zoologische Verhandelingen vol. 300 no. 1, pp. 1-72
    Publication Date: 2024-01-12
    Description: Twenty-four species of plumularian hydroids (Cnidaria: Hydrozoa) from the Strait of Gibraltar area are described and figured, including material from the coasts of southern Spain (between El Portil near the Spanish-Portuguese border and Adra, Mediterranean coast of Granada, c. 3\xc2\xb0W) and from Ceuta in northern Africa. The geographical distribution of all species is briefly discussed and where relevant additional notes are added.
    Keywords: Cnidaria ; Hydrozoa ; Hydroida ; Plumularioidea ; Strait of Gibraltar ; relationships.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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