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| Registros recuperados: 87 | |
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| Stock, Jan H.. |
| Up to now, the crustacean order Thermosbaenacea contained two genera with only six valid species, five from the panmediterranean region, one from Texas. Two new members of this curious group of “living fossils” have been discovered in the West Indies. The one, from two deep wells not far from the sea coast in Saint Croix (U.S. Virgin Islands), belongs to an undescribed species of the amphiatlantic genus Monodella, and is called M. sanctaecrucis. The other was found in several localities in Curaçao (Netherlands’ Antilles), in coral débris of rubble walls on the shore; it belongs to a new genus, Halosbaena showing several remarkable adaptations, e.g. having a uniramous first pereiopod and reductions in the maxilliped. The presence of very numerous... |
| Tipo: Article / Letter to the editor |
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| Ano: 1976 |
URL: http://www.repository.naturalis.nl/record/503963 |
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| Stock, Jan H.. |
| A single specimen of an ingolfiellid was found in a slightly brackish well (locally called a “pos”) on the Bacuna estate in the island of Bonaire (Netherlands Antilles). The specimen differs from all other 21 ingolfiellid taxa, and is described as a new species, Ingolfiella (Gevgeliella) putealis. The two classification systems in use for the Ingolfiellidea, that of KARAMAN (1959) and that of RUFFO (1970), are compared and both are found not entirely satisfactory in the light of recent discoveries. A new system is devised, in which the suborder is divided into 2 families, together with 3 genera and 5 subgenera. The genera and subgenera do not only represent morphological unities, but also combine species with similar habitat requirements. Within the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1976 |
URL: http://www.repository.naturalis.nl/record/506101 |
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| Stock, Jan H.. |
| STOCK, J. H. 1992. A new species of Hemicyclops (Crustacea, Copepoda, Poecilostomatoida, Clausidiidae) associated with hermit crabs in Curaçao. Stud. Nat. Hist. Caribbean Region 71, Amsterdam 1992: 69-78. Hemicyclops geminatus n. sp. is described from the upper infralittoral zone of Curaçao (Antilles). It is a regular associate of three species of hermit crabs: Calcinus tibicen, Paguristes grayi, and Dardanus venosus. The new taxon appears to be a twin species of Hemicyclops columnaris HUMES, 1984, an associate of a stony coral off the Pacific coast of Panamá. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Hemicyclops geminatus; Copepoda; Curaçao.; Hermit crabs. |
| Ano: 1992 |
URL: http://www.repository.naturalis.nl/record/503174 |
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| Stock, Jan H.. |
| Enalcyonium ciliatum n.sp., a copepod of the family Lamippidae, endoparasitic in Dendronephthia (D.) hemprichi (Klunzinger), is described from the Dahlak Archipelago, Ethiopia. Apart from unnamed, Lamippe-like copepods collected by the Siboga Expedition in Indonesia, these Ethiopian specimens are the first Lamippidae described from the Indo-West Pacific faunal region. |
| Tipo: Article / Letter to the editor |
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| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/504737 |
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| Stock, Jan H.. |
| A new species of the genus Rhipidogammarus, Rh. variicauda, is described from phreatic fresh waters of two wells in the western part of the isle of Mallorca (Mediterranean). The new species has a highly variable third uropod: about 80% of the specimens possesses a typically “parviramus” appendage, but 20% shows the “variiramus” condition. Apparently, a classification based on the structure of the third uropod should be used with caution. |
| Tipo: Article / Letter to the editor |
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| Ano: 1978 |
URL: http://www.repository.naturalis.nl/record/503874 |
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| Stock, Jan H.. |
| A revision of the species belonging to the group of, or confused with “Gammarus” (now Echinogammarus) pungens H. Milne Edwards, 1840 is given. Not less than 7 species have, at one or more occasions, been confused with E. pungens. All of these, and a number of related forms, are described and illustrated in detail, in several cases after consultation of the original or of the type material. In order to stabilize the nomenclature of this group, a neotype is selected to replace the lost types of Gammarus pungens. A key to the species is provided. The subgenera Homoeogammarus and Parhomoeogammarus, as well as the genus Ostiogammarus, are synonymized with Echinogammarus. The subgenus, or genus, Marinogammarus is synonymized with Chaetogammarus. Since the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1968 |
URL: http://www.repository.naturalis.nl/record/504878 |
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| Stock, Jan H.. |
| The Sarathrogammarus-group consists of the genera Sarathrogammarus (7 species, of which 1 new), Neogammarus (2 species, of which 1 new), Comatogammarus (new genus, with 1 species), Rhipidogammarus (new genus, with 2 species, of which 1 new), and Longigammarus (1 species). Keys to genera and species are provided. |
| Tipo: Article / Letter to the editor |
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| Ano: 1971 |
URL: http://www.repository.naturalis.nl/record/504584 |
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| Stock, Jan H.. |
| The diagnosis of a family of groundwater Amphipoda, the Bogidiellidae, is revised. Based on a cladistic analysis, the former genus Bogidiella is subdivided. In its present conception, the Bogidiellidae comprise eleven named genera, seven subgenera, and 50 named species, whereas several other taxa remain unnamed. These are distributed over all major continents (except Antarctica), and some oceanic islands. This distribution pattern is presumably due to at least two major vicariant processes: the breakup of Pangaea in the Mesozoic and the geological regression movements in the Tertiary. A number of West Indian taxa is described, including four new species. |
| Tipo: Article / Letter to the editor |
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| Ano: 1981 |
URL: http://www.repository.naturalis.nl/record/503959 |
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| Botosaneanu, Lazare; Stock, Jan H.. |
| After a review of the morphology of the stygobiont species of Cyathura, five new species are described (one from Cuba, two from Haiti, one from Jamaica, and one from Aruba), and additional details are provided for some other species. Considerations are made on the peculiarities of the geographic distribution of the 11 stygobiont species known at present (forming a circum-Caribbean group and an Indo-Pacific one). A study of the relationships between the various species, and comparison with the non-stygobiont (marine or brackishwater) species of the genus, allows the definition of a subgenus Cyathura s. str. (for all non-stygobiont forms and two marine-interstitial ones) and of a new subgenus, Stygocyathura (containing most of the stygobiont species). In the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1982 |
URL: http://www.repository.naturalis.nl/record/504583 |
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| Stock, Jan H.. |
| Area-species graphs for stygobiont Crustacea Malacostraca of seven islands in the southern Caribbean have been compared. It appears that the “constants” C and z of these graphs are influenced by the geological time elapsed since the island’s emergence. In older islands the values for C and z are higher than in younger islands. The values for z of younger and older islands are much higher (0.79-0.97) than usually obtained in literature for terrestrial animals (0.20-0.40). This may be explained by the very limited dispersal faculties of K-strategists, such as stygobiont Malacostraca. |
| Tipo: Article / Letter to the editor |
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| Ano: 1982 |
URL: http://www.repository.naturalis.nl/record/504256 |
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| Stock, Jan H.. |
| Groundwaters (in wells, springs, caves, macroporous interstitia...) of 29 Caribbean islands have been investigated. Only on the four islands off the coast of Venezuela (viz., Aruba, Curaçao, Bonaire, and Margarita) members of the suborder Ingolfiellidea (Crustacea, Amphipoda) have been encountered, altogether six species, of which three are described here for the first time. The zoogeographical implications of this limited range in the West Indies is discussed. |
| Tipo: Article / Letter to the editor |
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| Ano: 1979 |
URL: http://www.repository.naturalis.nl/record/504061 |
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| Stock, Jan H.. |
| Hadziid Amphipoda are known from inland groundwaters of 14 West Indian islands, Thermosbaenacea from those of 9 islands. Only 4 islands show joint occurrence of both groups. Even in islands of joint occurrence, hadziids occur significantly more often alone in a given locality, than in combination with Thermosbaenacea or Copepoda Cyclopidae. The latter two groups do not show any significant avoidance of each other. Some possible causes for the non-random occurrence of small groundwater Crustacea are discussed; it seems most likely that hadziids predate on other Crustacea, such as Thermosbaenacea or Cyclopidae. This predation may have, or have had, influence on the actual distribution patterns of the groups under consideration. |
| Tipo: Article / Letter to the editor |
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| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/503868 |
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| Stock, Jan H.. |
| In the period 1973-1978 members of the Institute of Taxonomic Zoology (Zoölogisch Museum) have sampled the non-marine fauna of 27 West Indian islands. The present report records the stations in which stygobionts (= groundwater organisms) were collected . The main purpose of the program was to test the value of various biogeographic models for explaining the insular fauna. Since in general the fauna of inland waters yields good results in biogeographic analyses, the program was mainly directed to this fauna. |
| Tipo: Article / Letter to the editor |
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| Ano: 1979 |
URL: http://www.repository.naturalis.nl/record/506322 |
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| Registros recuperados: 87 | |
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