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Articles 4021 - 4050 of 4144

Full-Text Articles in Physical Sciences and Mathematics

Les Japygidés Cavernicoles De La Faune Française, Jean Pagés Jan 1972

Les Japygidés Cavernicoles De La Faune Française, Jean Pagés

International Journal of Speleology

Twelve species of Japygids are cites from France. Six are known with certitude from caves. None of them shows any morphological modification which can be ascribed to cavernicolous life. All of them are found outside caves except Metaj. doderoi Silv. which is known from a unique female from Castel Mouly cave. To take into account the selection which seems to occur among the species, the term “subtroglophile” is proposed to include those which can be found in the caves.

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La Migration Des Trichoptères Cavernicoles. Mise En Évidence Par Piégeage Lumineux, Yvette Bouvet Jan 1972

La Migration Des Trichoptères Cavernicoles. Mise En Évidence Par Piégeage Lumineux, Yvette Bouvet

International Journal of Speleology

The Trichoptera from the group “Stenophylax” are frequent in caves. Until now, following Jeannel’s thought (1926), most authors believed that these animals were found in caves by hazard and were doomed to perish in them. With the use of a light trap it is now demonstrated that cavernicolous Trichoptera not only stay in caves during the entire summer, but also that during autumn (September-October) they leave the caves to lay their eggs in the nearby rivers.

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Untersuchungen Über Das Nervensystem Von Hexaurus Merkli J. Frivaldzsky (Coleoptera, Bathysciinae), Michail Kwartirnikov Jan 1972

Untersuchungen Über Das Nervensystem Von Hexaurus Merkli J. Frivaldzsky (Coleoptera, Bathysciinae), Michail Kwartirnikov

International Journal of Speleology

The central nervous system of the beetle Hexaurus merkli J. Frivaldzsky corresponds to the formulae 2+2 / 0. The relative proportion of the corpora pedunculata reaches 5.5% and that of the olfactive lobes 6.8% of the total mass of the upper-exophagus ganglion. The under-exophagus ganglion corresponds to 29.5% of the total mass of the head-ganglion. It is furthermore demonstrated both in the upper- and under-exophagus ganglion that neurosecretory cells exist. Corpora allata and corpora cardiaca are also present.

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Note On Lepidoptera From Bulgarian Caves, Andrzej W. Skalski Jan 1972

Note On Lepidoptera From Bulgarian Caves, Andrzej W. Skalski

International Journal of Speleology

This paper is a report on Lepidoptera collected in 1960 and 1970 in some caves of the Lakatnik region in the Stara Planina Mts. (Bulgaria). The following species were found: Digitivalva granitella (Tr.), D. pulicariae (Klim.), Thiphosa sabaudiata Dup. and Autophila limbata Stgr. Two species, D. pulicariae (Klim.) and A. limbata Stgr. are new for the cave-fauna and fauna of Bulgaria.

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Observations Sur Un Aselle Obscuricole De France: Proasellus Racovitzai N.Sp. (Crustacea Isopoda Asellota), Jean-Paul Henry, Guy Magniez Jan 1972

Observations Sur Un Aselle Obscuricole De France: Proasellus Racovitzai N.Sp. (Crustacea Isopoda Asellota), Jean-Paul Henry, Guy Magniez

International Journal of Speleology

This paper reports the description of a new species of the genus Proasellus Dudich. Proasellus racovitzai n.sp. is widely depigmented. The eyes are reduced. It lives in the underground stream of the Goueil-di-Her cave system (Haute-Garonne, France). The species is an old, endemic form of the phyletic line of the modern epigean species P. meridianus (Racovitza). Chromosome number of the new species: 2n = 22.

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The Evolution Of The Eastern North American Isopods Of The Genus Asellus (Crustacea: Asellidae). Part I, Laurence E. Fleming Jan 1972

The Evolution Of The Eastern North American Isopods Of The Genus Asellus (Crustacea: Asellidae). Part I, Laurence E. Fleming

International Journal of Speleology

This paper is the first in a three part series concerned with the evolution of North American isopods of the genus Asellus. It contains the descriptions of four new species of isopods and a list of pertinent new range data of presently known species.

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A New Genus Of Bulgarian Cave Spiders (Protoleptoneta Bulgarica N.G., N. Sp., Leptonetidae), Christo Deltshev Jan 1972

A New Genus Of Bulgarian Cave Spiders (Protoleptoneta Bulgarica N.G., N. Sp., Leptonetidae), Christo Deltshev

International Journal of Speleology

A new genus Protoleptoneta (P. bulgarica n. g., n. sp.) is described, which was collected in caves of the Western Balkan mountains - Bulgaria. The new genus unites features of the genera Leptoneta and Paraleptoneta but there are many differences, which divide it from these genera. It differs from Leptoneta as follows: the tarsus of male palp does not possess the characteristic apophysa of Leptoneta; the tarsus is less depressed and does not branch out; the teeth of chelicerae are equable and equidistant. It differs from Paraleptoneta as follows: the femora of male palp is spineless; near the …

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Biospeologica Sovietica.Xlix. Le Premier Représentant Anophtalme Des Trechini (Coléoptères Carabiques) De La Ciscaucasie, S. I. Ljovuschkin Jan 1972

Biospeologica Sovietica.Xlix. Le Premier Représentant Anophtalme Des Trechini (Coléoptères Carabiques) De La Ciscaucasie, S. I. Ljovuschkin

International Journal of Speleology

During a recent exploration of caves in western Ciscaucasia there was collected, among others, a new species representing a new genus of Trechini (Coleoptera, Caraboidea), the description of which is given here; it has been named Birsteiniotrechus ciscaucasiens n.gen., n.sp., in memory of Prof. J.A. Birstein, famous Soviet biospeleologist, the founder and promotor of the “Biospeologica sovietica” series who passed away recently (cf. I.J.S., 4, part.2). The interest of Birsteiniotrechus lies in the fact that, until now no troglobite or endemic species of Trechini was known from the Ciscaucasian mountains; this genus belongs to the phyletic series of Neotrechus and …

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Essai Sur La Faune Cavernicole De Bulgarie. Iii. Résultats Des Recherches Biospéologiques De 1966 À 1970, P. Beron Jan 1972

Essai Sur La Faune Cavernicole De Bulgarie. Iii. Résultats Des Recherches Biospéologiques De 1966 À 1970, P. Beron

International Journal of Speleology

The present research follows two other earlier papers on the Bulgarian cave fauna (1962 and 1967). The three papers regroup the data on 431 Bulgarian karst caves, more or less studied from a biospeleological point of view. In this paper one will find a list of 147 new caves and pits with 293 animal species, of which 154 have not been mentioned in the earlier papers. A reference list containing 55 titles has been attached.

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Environmental Status Report - January-February-March 1971, Florida Power Corporation Jun 1971

Environmental Status Report - January-February-March 1971, Florida Power Corporation

Reports

The publication of this quarterly issue of Environmental Status Report records the development of Florida Power Corporation's environmental activities since January 1, 1971. This report emphasizes those programs investigating the environs of the Crystal River Nuclear Plant now under construction. However, a progress report of the environmental efforts at the proposed Anclote fossil-fired generating site is included in Appendix G. The locations of the Crystal River and Anclote sites are shown in Figure 1 (page 5)_

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Anclote Environmental Project Report 1970, Marine Science Institue, University Ofsouth Florida Jan 1971

Anclote Environmental Project Report 1970, Marine Science Institue, University Ofsouth Florida

Reports

A comprehensive environmental study involves lengthy and complex research and this report presents results which are preliminary in nature. The sampling period was limited to the fall (September-November) of 1970 in an area which shows marked seasonality. The results however represent a considerable body of information on the Anclote environment and valuable conclusions can be drawn from them. Included in the reports of each sub-discipline which follow are comments on future objectives, especially those for the coming year.

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Anclote Environmental Project Report 1971, Marine Science Institute, University Of South Florida Jan 1971

Anclote Environmental Project Report 1971, Marine Science Institute, University Of South Florida

Reports

The sub-discipline reports which follow represent a considerable body of data on the Anclote environment. In general the results provide additional support for many of the conclusions stated or implied in the Annual Report for 1970 (op. cit.). The considerable diversity and complexity of the Anclote estuary and Anchorage including the major role of the grassbeds is now documented in some detail. The overall results also support previous recommendations concerning power plant construction and design (op. cit.).

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Studies On The Biology Of Oligochaetes From The Phreatic Water Of An Exposed Gravel Bed, Michael Ladle Jan 1971

Studies On The Biology Of Oligochaetes From The Phreatic Water Of An Exposed Gravel Bed, Michael Ladle

International Journal of Speleology

More than twenty species of oligochaeta belonging to the families Enchytraeidae, Naididae, Tubificidae and Lumbriculidae were found in the phreatic water of the river bank gravels. Psammoryctes barbatus, Rhyacodrilus coccineus and Styludrilus heringianus were found throughout the year, attaining maturity in the spring. These three species may be univoltine under these conditions. The family Naididae and a few species of Tubificidae show well marked seasons of abundance, chiefly in the summer and autumn.

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Distribution And Dispersion Of The Troglobitic Carabid Beetle Rhadine Subterranea, Robert W. Mitchell Jan 1971

Distribution And Dispersion Of The Troglobitic Carabid Beetle Rhadine Subterranea, Robert W. Mitchell

International Journal of Speleology

Intracave distribution and dispersion patterns within a population of the troglobitic carabid beetle Rhadine subterranea were studied. Distribution was markedly heterogeneous, the beetles being almost entirely restricted to substrata of deep, uncompacted silt. Dispersion of the beetles on the silt substrata did not depart from random expectation. It is shown, however, that this is a functionally emergent pattern resulting from an intrasex repulsion related to feeding which tends to produce regularity counterbalanced by an intersex attraction related to reproduction which tends to produce contagion.

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Note On Lepidoptera From Bulgarian Caves, Andrzej Skalski Jan 1971

Note On Lepidoptera From Bulgarian Caves, Andrzej Skalski

International Journal of Speleology

This paper is a report on Lepidoptera collected in 1960 in some caves of the Stara Planina Mountains (Bulgaria). In three caves in the environs of Lakatnik the following species were found: Acrolepia granitella Tr., Acrolepia pulicariae Klim., Autophila limbata Stgr., and Triphosa sabaudiata Dup. Two species (Acrolepia pulicariae Klim. and Autophila limbtia Stgr.) are new for both the cave fauna of Bulgaria and fauna of Bulgaria.

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Deux Monolistrini Nouveaux (Crustacea, Isopoda) Des Eaux Souterraines De Croatie, Christa L. Deeleman-Reinhold Jan 1971

Deux Monolistrini Nouveaux (Crustacea, Isopoda) Des Eaux Souterraines De Croatie, Christa L. Deeleman-Reinhold

International Journal of Speleology

A new subspecies and a new species are described: Monolistra (Monolistra) caeca meridionalis nov. subspec. was found in three caves in the northern part of Croatia, Yougoslavia. It is distinguishable from the typical form principally by the thin, acuminate form of the protuberance of the protopodite of the 2nd male peraeopod, by the endopodite of the 1st pleopod which bears 3-4 setae (1-2 in M. c. caeca), by the somewhat wider endopodite of the 3rd pleopod and by the shorter, only slightly curved uropods. A sketch shows the situation of 6 newly discovered localities in northern Croatia, 3 of …

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The Subterranean Fauna Associated With The Blind Palaemonid Prawn Typhlocaris Galilea Calman, Moshe Tsurnamal, Francis Dov Por Jan 1971

The Subterranean Fauna Associated With The Blind Palaemonid Prawn Typhlocaris Galilea Calman, Moshe Tsurnamal, Francis Dov Por

International Journal of Speleology

Exploration of the subterranean tract of the spring of En-Nur (at the North end of Lake Tiberias) by scuba diving and by use of new collecting methods, led to the discovery of a living community associated with the blind prawn Typhlocaris galilea. A rich growth of sulphur bacteria and of pigmentless Cyanophyceae from the trophic basis in this peculiar biotope. Representatives of three hypogeic crustacean orders have been found as well as some peculiar gastropods, nematods and oligocaets. The latter are the main food of Typhlocaris galilea.

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A New Cave Amphipod Crustacea From Japan, Masuzo Uéno Jan 1971

A New Cave Amphipod Crustacea From Japan, Masuzo Uéno

International Journal of Speleology

A new eyeless Amphipod Crustacea 5 mm long was found in Himisé-dò Cave in Tokushima Prefecture, Shikoku. The inner ramus of its third uropod is nearly as long as the unijointed outer ramus. The accessory flagellum of the first antenna consists only of a single joint. The first maxilla is distinctive in its small palp which does not extend beyond the apical margin of the outer plate and bears only an apical seta. In these characteristic features the present form is different from any known species of the genera of the Crangonyx and Hadzia groups and seems to belong to …

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Quaire Nouvelles Bathynella (Crustacea, Syncarida) De Roumanie: De Nouveau Sur Le «Dilemme Bathynella Natans Vejd», Eugène Serban Jan 1971

Quaire Nouvelles Bathynella (Crustacea, Syncarida) De Roumanie: De Nouveau Sur Le «Dilemme Bathynella Natans Vejd», Eugène Serban

International Journal of Speleology

The paper presents the diagnosis of 4 new Bathynella species found in Romania: B. paranatans nov. sp., B. boteai nov. sp., B. motrensis nov. sp. and B. plesai nov. sp.; a discussion on B. cf. scythica Botosàneanu et Damian is also given. The morphological features which were used are the general and the fine structure of the genital pereiopode of the male (Pl. 5—8), the chaetotaxy of the maxillula, maxilla, thoracic appendages, uropods and furca. The presence of the distal (coxal) epipodite on the first pereiopod in B. paranatans nov. sp., distinguishes this species from the others (Pl. 1—4). The …

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Food And Feeding Habits Of The Troglobitic Carabid Beetle Rhadine Subterranea, Robert W. Mitchell Jan 1971

Food And Feeding Habits Of The Troglobitic Carabid Beetle Rhadine Subterranea, Robert W. Mitchell

International Journal of Speleology

Food and feeding habits of a population of the troglobitic carabid beetle Rhadine subterranea inhabiting Beck’s Ranch Cave, Williamson Co., Texas, were investigated. Observational and experimental data demonstrate that a primary food source of this beetle is the eggs of cave crickets (Ceuthophilus spp.). The beetles locate eggs by selective digging into substrata where cave crickets have oviposited. Chemoreception and mechanoreception are important in the location of oviposition sites.

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Preference Responses And Tolerances Of The Troglobitic Carabid Beetle, Rhadine Subterranea, Robert W. Mitchell Jan 1971

Preference Responses And Tolerances Of The Troglobitic Carabid Beetle, Rhadine Subterranea, Robert W. Mitchell

International Journal of Speleology

Studies were made on the preference responses and tolerances of the troglobitic carabid beetle Rhadine subterranea to light, temperature, and relative humidity. The beetles are weakly photonegative and appear to have a strong preference for atmospheres of low saturation deficit. Both these responses seem to be orthokineses. They have a strongly developed temperature sense, and their temperature preferendum shifts seasonally. This response seems to be a klinotaxis. They are neither strongly stenothermal nor stenohygrobic. The preference responses, especially that of temperature, are probably mechanisms tending to restrict the beetles to their habitat. The tolerance data suggest that the epigeum could, …

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Stenasellus Skopljensis Thermalis Ssp.N. (Crustacea, Isopoda) D'Une Source Chaude En Bosnie, Milan Meštrov, Romana Lattinger-Penko University Of Zagreb Jan 1971

Stenasellus Skopljensis Thermalis Ssp.N. (Crustacea, Isopoda) D'Une Source Chaude En Bosnie, Milan Meštrov, Romana Lattinger-Penko University Of Zagreb

International Journal of Speleology

The new subspecies Stenasellus skopljensis thermalis, from Banja Luka (Bosnie, Yugoslavia) is described. From the ecological point of view this form differs from the others because it inhabits underground waters of elevated temperature (240°C). Another constantly abundant species, St. hungaricus thermalis Mestrov, also occurs in Yugoslavia under the same ecological conditions, in the warm springs of Podsused near Zagreb. This indicates that these underground waters at elevated temperature are not accidental but preferred habitats for these forms, and confirms once again that thermal waters of this type are the biotopes-refuges in which certain relic forms are retained.

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A New Species Of The Subterranean Amphipod Genus Allocrangonyx (Gammaridae), With A Redescription Of The Genus And Remarks On Its Zoogeography, John R. Holsinger Jan 1971

A New Species Of The Subterranean Amphipod Genus Allocrangonyx (Gammaridae), With A Redescription Of The Genus And Remarks On Its Zoogeography, John R. Holsinger

International Journal of Speleology

The systematics of the North American, subterranean amphipod genus Allocrangonyx are revised and two species are recognized - A. pellucidus (Mackin) and A. hubrichti, new species. Allocrangonyx is critically compared with the European genus Niphargus and several endemic North American genera of the Crangonyx group. Because of its unique morphological position, Allocrangonyx is removed from the Crangonyx group and placed in the newly designated AlIocrangonyx group. Some factors believed to have influenced speciation within the genus are discussed in some detail.

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Durées De La Mue, De L'Intermue Des Adultes, Et Longévité De Stenasellus Virei Dollfus (Crustacé Asellote Troglobie), Guy Magniez Jan 1971

Durées De La Mue, De L'Intermue Des Adultes, Et Longévité De Stenasellus Virei Dollfus (Crustacé Asellote Troglobie), Guy Magniez

International Journal of Speleology

The author’s observations of numerous cases of molting in the hypogean asellid Stenasellus virei Dollfus, 1897 appear to show that the phenomenon occurs in two steps. The loss of the anterior exuvium is separated from that of the posterior exuvium by a period of 8 to 16 days in adults from cavernicolous populations of Stenasellus virei in the Pyrenees and Cantabrian Alps. The intermolts last from 9 to 18 months for the same individuals. One must allow, for this species, a minimun life span of 10 years. Values of the same order of magnitude are anticipated for the two other …

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Contribution À L'Étude Des Mycetophilidae Des Grottes De Roumanie Avec La Description De Deux Espèces Nouvelles, Anca Burghele-Balacesco Jan 1971

Contribution À L'Étude Des Mycetophilidae Des Grottes De Roumanie Avec La Description De Deux Espèces Nouvelles, Anca Burghele-Balacesco

International Journal of Speleology

The study of Mycetophilidae collected in Romanian caves during these past years enables us to add 24 species to those already known from the country, among which two are new for science: Exechia dumitrescui n. sp. and Rhymosia matilei n. sp. Sixteen species belonging to the genus Macrocera, Zelmira, Leia, Exechia, Rhymosia, Allodia, Mycetophila, Zygomyia and Deolpsis have never been mentioned before for the subterranean environment. Some of these species are extremely rare: Exechia januari Lundst., E. parallela Edw., Rhymosia tarnani Dzeid., Phronia kowarzi Dzicd., Mycetophila rudis Winn.

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Les Milieux De Vie De Stenasellus Virei Dollfuss, 1897 (Crustacé Asellote Troglobie): Données Préliminaires, Guy Magniez Jan 1971

Les Milieux De Vie De Stenasellus Virei Dollfuss, 1897 (Crustacé Asellote Troglobie): Données Préliminaires, Guy Magniez

International Journal of Speleology

Stenasellus virei is now known from 77 localities (caves, phreatic waters and underflow of some rivers) of the eastern Aquitanian basin, central and eastern Pyrenees, and of Spain. A classification of the different biotopes of the species is attempted herein, and some of their characteristics are summarily described. This cavernicolous species can now be viewed in a new light, as much ecological as systematic or biogeographic.

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Trichoniscoides Saeroeensis Lohmander, An Isopod Crustacean New To The British Fauna, Edith M. Sheppard Jan 1971

Trichoniscoides Saeroeensis Lohmander, An Isopod Crustacean New To The British Fauna, Edith M. Sheppard

International Journal of Speleology

The terrestial isopod Trichoniscoides saeroeensis Lohmander, new to the British fauna, is recorded fram the dark zone of disused mines in Lancashire; the paper includes notes on its systematic position and certain morphological characters as well as its affinities. The origin and geographical distribution of the species, together with that of the other two species recorded in England [T. albidus (Budde-Lund) and T. sarsi Patience], is discussed.

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Die Isopoda Terrestria Der Höhlen Von Ereğli Am Schwarzen Meer (5. Beitrag Zur Kenntnis Der Türkischen Isopoden), Hans Strouhal Jan 1971

Die Isopoda Terrestria Der Höhlen Von Ereğli Am Schwarzen Meer (5. Beitrag Zur Kenntnis Der Türkischen Isopoden), Hans Strouhal

International Journal of Speleology

Dr. Klaus Dobat (Tübingen) and Madame Dobat have collected the following terrestrial Isopods from caves of Eregli on the coasts of the Black Sea, North of Turkey: 1) Ligidium (Ligidium) assimile sp. nov., trogloxene widely distributed in the northern Anatolian territories; 2) Chasmatoniscus oculatus gen. et sp. nov., troglophile; 3) Trichoniscus (Trichoniscus) heracleotis sp. nov., troglobic; 4) Cylisticus (Platycylisticus) dobati subgen. et sp. nov., troglophile; 5) Cylisticus (Cylisticus) mechthildae sp. nov., troglobic. The author gives the descriptions together with figures of all these new Oniscoidea in this paper, M. Dobat describes the caves of Ereğli and lists the animals herein …

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Problems And Management Of Water Quality In Hillsborough Bay, Fl, Federal Water Pollution Control Administration Dec 1969

Problems And Management Of Water Quality In Hillsborough Bay, Fl, Federal Water Pollution Control Administration

Reports

Full scale filed operations began on June 8, 1967. Since that time, a pattern of pollution, water quality degradation and a complex ecological system has been defined.

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On A New Species Of Earthworm From A Mexican Cave, Gordon Gates Jan 1968

On A New Species Of Earthworm From A Mexican Cave, Gordon Gates

International Journal of Speleology

Eodrilus mexicanus of the megadrile oligochaete family Acanthodrilidae is described along with some data as to development, regeneration and abnormality. Relationships with its American congeners, often inadequately characterized, are discussed and the present state of Eodrilus systematics is criticised. E. mexicanus seems likely to be of unusual interest as the second species of earthworm to have ovaries in segment xii.

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