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A history of the British hydroid zoophytes
01 Jan 1868-
About: The article was published on 1868-01-01 and is currently open access. It has received 112 citations till now. The article focuses on the topics: Hydroid (zoology).
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TL;DR: The results of more than 30 years field observations and research work carried out from the Isefjord Laboratory, Vellerup Vig (Zealand, Denmark), which is owned and financed by the author, are represented.
Abstract: This paper represents the results of more than 30 years field observations and research work carried out from the Isefjord Laboratory, Vellerup Vig (Zealand, Denmark), which is owned and financed by the author. The Isefjord complex, 36 km long, including the main fjord and the Roskilde Fjord, and covering about 400 km2, is a shallow (7–10 m, max. 30 m) area dominated by substrata of fine sand to mud with a high content of organic matter. As a guidebook for future research the first part gives information about distribution, systematics, ecology, and breeding of the majority of the 477 animal species described. Nearly 400 species are invertebrates and of the chordates 68 species are true fishes. 63% of all animal species have not previously been recorded from the area, 27 species are new to Danish seas, and one (Polychaeta, Capitellidae) is new to science. The hydrography is treated mainly on the basis of literature. The fjord system may be classified as mixohaline: the Isefjord proper is polyhali...
695 citations
TL;DR: A re-examination of the type material of Eudendrium elsaeoswaldae Stechow, 1921 revealed that it is conspecific with E. ramosum and newly collected material from the type locality confirmed this.
Abstract: The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Filifera Part 4. - This study reviews all European hydroids belonging to the filiferan family Eudendriidae. Two new species occurring in the northeastern Atlantic are described: Eudendrium capillaroides new spec. and Eudendrium unispirum new spec. Eudendrium vaginatum Allman, 1863, is redescribed. It is characterized by a special type of nematocysts and traits of the perisarc. It is distinct from Eudendrium annulatum Norman, 1864, which is a separate, valid species. Eudendrium fragile Motz- Kossowska, 1905 and Eudendrium islandicum Schuchert, 2000 are both recognized as synonyms of E. album Nutting, 1898. Eudendrium stratum Bonnevie, 1898 and E. planum Bonnevie, 1898 are both recognized as synonyms of E. rameum (Pallas, 1766). Eudendrium insigne Hincks, 1861 is indistinguishable from E. ramosum and newly collected material from the type locality confirmed this. Eudendrium insigne must thus be regarded as a synonym of E. ramosum (Linnaeus, 1758). A re-examination of the type material of Eudendrium elsaeoswaldae Stechow, 1921 revealed that it is conspecific with E. ramosum (Linnaeus, 1758), becoming thus a new synonym of the latter. Perigonimus multicornis Allman, 1876 is indistinguishable from Myrio - nema hargitti (Congdon, 1906) and must be regarded as a senior synonym of the latter. Because it seems likely that the original type locality designation "Kattegat" was incorrect, it should not replace M. hargitti or M. amboinense.
202 citations
Cites background from "A history of the British hydroid zo..."
...Cladocoryne pelagica Allman, 1876 was described based on a fertile colony found on floating Sargassum seaweed northwest of Ireland....
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...The name Candelabridae has only recently come into usage (e. g. Bouillon, 1985; Schuchert, 1996; Hewitt & Goddard, 2001), while other used Myriothelidae (e. g. Calder, 1972; Millard, 1975; Petersen, 1990)....
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...SYNONYMS: Myriothelidae Hincks, 1868; Symplectaneidae Fraser, 1941....
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...DISTRIBUTION: North-Eastern Atlantic: Norway (Christiansen, 1972), Great Britain and Ireland (Hincks, 1868; Allman, 1872; Russell, 1953), Sweden (Segerstedt, 1889; Aurivillius, 1898; Kramp, 1935); Denmark (Kramp, 1935); Helgoland (Richters, 1908); Holland (Vervoort, 1946), Belgium (Leloup, 1947),…...
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...DISTRIBUTION: North-Eastern Atlantic: Norway (Christiansen, 1972), Great Britain and Ireland (Hincks, 1868; Allman, 1872; Russell, 1953), Sweden (Segerstedt, 1889; Aurivillius, 1898; Kramp, 1935); Denmark (Kramp, 1935); Helgoland (Richters, 1908); Holland (Vervoort, 1946), Belgium (Leloup, 1947), Atlantic coast of France (Dujardin, 1843; Billard, 1905; Teissier, 1965), Atlantic coast of the Iberian Peninsula (Medel & López-González, 1996)....
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TL;DR: In those families where the reduction of the medusa can be analysed, it is shown that the reduction occurred after all synapomorphies defining the genera had evolved and usually affected individual species within a genus rather than the original species from which the other species in the genus evolved.
139 citations
TL;DR: If gamete and larval dispersal are as limited as has recently been contended, local isolation of populations may be a routine occurence, offering repeated opportunities for speciation.
Abstract: Many symbiotic organisms are narrowly distributed on one or a few host species. These associations are intriguing, as they invite the development of hypotheses regarding the pattern and process of speciation and serve as laboratories for the testing of methods of phylogenetic reconstruction (Kraus, 1978; Futuyma & Slatkin, 1983; Stone & Hawks worth, 1986). The evolution of host-specificity in the sea may be expected to be severely constrained by the difficulty of achieving reproductive isolation in taxa whose gametes are freely released into the water column and/or whose larvae are potentially widely distributed (Scheltema, 1977). Yet this difficulty may well be overestimated, given the recent demonstrations of limited gamete (Pennington, 1985; Yund, in press) and larval dispersal (Knight-Jones & Moyse, 1961; Ryland, 1981; Olsen, 1985; Jackson & Coates, 1986; Grosberg, 1987). Indeed, if gamete and larval dispersal are as limited as has recently been contended (Jackson, 1986), local isolation of populations may be a routine occurence, offering repeated opportunities for speciation.
94 citations
01 Jan 2001
TL;DR: Meddelelser et al. as discussed by the authors dedicated their study on hydrozoan systematics to their wife Christine, in appreciation of all her direct and indirect support which enabled them to pursue their studies.
Abstract: 5 Introduction • 6 Material and Methods • 7 Systematic Part • 8 Acknowledgements • 159 References • 160 Appendix 1 • 172 Appendix 2 • 176 Appendix 3 • 178 Index • 179 Dedicated with much love to my wife Christine, in appreciation of all her direct and indirect support which enabled me to pursue my studies on hydrozoan systematics. 5 Meddelelser om Gronland, Bioscience 53
84 citations