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Articles 3991 - 4020 of 4144
Full-Text Articles in Physical Sciences and Mathematics
Un Nouvel Asellide Cavernicole D'Espagne Centrale: Bragaselius Lagari N.Sp. (Crustacea Isopoda Asellota), Jean-Paul Henry, Guy Magniez
Un Nouvel Asellide Cavernicole D'Espagne Centrale: Bragaselius Lagari N.Sp. (Crustacea Isopoda Asellota), Jean-Paul Henry, Guy Magniez
International Journal of Speleology
Description of a new, unpigmented and eyeless Asellid, belonging to the Iberian Genus Bragasellus Henry et Magniez, 1968. The new species lives in the underground stream of the Cueva del Tornero (Checa, province of Guadalajara, central Spain).
Trichoniscidae Della Grotta Di Su Mannau, Sardegna Sub-Occidentale (Crustacea, Isopoda), Roberto Argano
Trichoniscidae Della Grotta Di Su Mannau, Sardegna Sub-Occidentale (Crustacea, Isopoda), Roberto Argano
International Journal of Speleology
Description of three eyeless and apigmented new species of Trichoniscidae which have been found in Su Mannau cave in Sardinia. Two of them belong to the genus Catalauniscus Vandel: Catalauniscus hirundinella n.sp. offering few relationships with the spanish species C. espanoli Vandel, and Catalauniscus puddui n.sp. which has also similar features to an iberian form, C. bolivari Arcangeli. The third (Scotoniscus janas n.sp.) belongs to the endemic genus Scotoniscus Racovitza, until now monospecific and represented by a series of subspecies from the Northern Pyrenees, all nearly related to the specific form S. macromelos Racovitza. The discovery of those three …
Anclote Environmental Project Report 1973, Department Of Marine Science, University Of South Florida
Anclote Environmental Project Report 1973, Department Of Marine Science, University Of South Florida
Reports
This report is one in a continuing series on environmental quality in the Anclote estuary near Tarpon Springs, Florida. Much of the base line ecological data now collected will be outlined here and in subsequent works. Full scale power plant operations are scheduled to commence during the summer of 1974 after which time documentation of the nature and degree of environmental impact by the power plant will begin.
La Colonisation De Quelques Grottes Du Jura Par Niphadobota Alpina Bezzi (Dipt. Tipulidae), M. J. Turquin
La Colonisation De Quelques Grottes Du Jura Par Niphadobota Alpina Bezzi (Dipt. Tipulidae), M. J. Turquin
International Journal of Speleology
Three new localities of Niphadobota (=Chionea) alpina in the French southern Jura allow the author to state that this insect’s climatic requirements explain the biogeography of the species; the origin of the colonization of caves by this dipteran is considered.
Beobachtungen An Markierten Und Unmarkierten Köcherfliegen (Trichoptera) In Der Bärenhöhle Im Lonetal (Schwäbischer Jura), Klaus Dobat
International Journal of Speleology
1.The Bärenhöhle, one of the ten caves situated in the episodically water-bearing valley of the Lone (Swabian Jura), serves as summer quarters for the total of ten species of Trichoptera, most of which are Micropterna nycterobia and Stenophylax permistus. 2.Counts carried out in this cave from 1967-1972 and observations of flood and dry-periods of the Lone during the same years make evident that the number of Trichoptera flying into the cave seems to depend in a large measure on the seasonal activity of the creek: a steady flow of water makes the undisturbed development of larvae possible and results …
Recherches Sur Les Grégarines (Gregarinida: Stenophoridae) Du Diplopode Troglobie Typhloiulus Bureschi Verhoeff En Bulgarie, Vassil Golemansky, Dimitar Taschev
Recherches Sur Les Grégarines (Gregarinida: Stenophoridae) Du Diplopode Troglobie Typhloiulus Bureschi Verhoeff En Bulgarie, Vassil Golemansky, Dimitar Taschev
International Journal of Speleology
A study of the parasitic fauna, particularly the Gregarines, found in a troglobitic diplopod Typhloiulus bureschi Verhoeff, one of the Iulidae from Bulgarian caves is presented. Data on morphology and taxonomy of the Eugregarines are included. There is a description of a new species, Stenophora typhloiuli. This species is compared with other species of the genus Stenophora.
Sur Un Nouvel Amphipode Souterrain De Bulgarie Niphargus Kochianus Melticensis N. Ssp., Dan Dancau, Stoitze Andreev
Sur Un Nouvel Amphipode Souterrain De Bulgarie Niphargus Kochianus Melticensis N. Ssp., Dan Dancau, Stoitze Andreev
International Journal of Speleology
A new subspecies of Amphipode is described, being the first representative of the Niphargus kochianus group in Bulgaria. The new subspecies resembles N. k. tamanini Ruffo, N. k. petrosani Dobr. et Manolache, N. k. labacensis Sket, N. k minor Sket, for the maxille I having one single hair on the internal lobe and a single combed spine on the external lobe. However, it differs neatly from all other subspecies by the length of the nails on the dactyl and by the peculiar form and the chetotaxia of the telson.
Fluorescent Dye Determination Of Groundwater Movement And Contamination In Permeable Rock Strata, Charles P. Giammona
Fluorescent Dye Determination Of Groundwater Movement And Contamination In Permeable Rock Strata, Charles P. Giammona
International Journal of Speleology
A preliminary inquiry to the extent and boundaries of subterranean waterways within the Mystery Cave System was explored. Rhodamine WT dye in 500 ml quantities was used in fluormetry determinations of surface flow to ground water basins. A Turner Model 111 fluorometer was utilized for detection purposes powered by a portable 12 volt, 220 amp hour battery-inverter system. It was shown that water entered underground passageways through sinkholes or highly creviced limestone/dolomite rock strata and reappeared several kilometres downstream. The outflow appears in the form of “springs”. The possibility exists that contaminated surface water may seep through the soil for …
Le Deuxième Colloque International Sur Les Genres Niphargus Et Gammarus - Lyon, 1973 Compte-Rendu De Travail Pour Niphargus, R. Ginet
International Journal of Speleology
Following the First Colloquium held at Verona in 1969, it was planned to hold at Lyon in July, 1973, the Second International Colloquium dealing with the genus Niphargus and also with the genus Gammarus. As subject matter in discussions dealing with the first of these genera, the meeting was devoted mainly the balancing the various viewpoints (based on the European approach) and initiating a collective study of the systematics of these hypogean Amphipoda. The systematics are currently quite confused. Several modifications of the propositions of the Colloquium at Verona (published in 1972) were discussed. A third Colloquium, with the same …
Considerazioni Sui Carabidi Carvernicoli Ed Engogei Dell'asia Minore (Coleoptera, Carabiae), Augusto Vigna Taglianti
Considerazioni Sui Carabidi Carvernicoli Ed Engogei Dell'asia Minore (Coleoptera, Carabiae), Augusto Vigna Taglianti
International Journal of Speleology
The cavernicolous and endogeous Coleoptera Carabidae, actually (1972) known from the Anatolian peninsula (here considered together with Armenia, the Caucasus and the mountains of Lebanon), are examined and discussed. They belong to the tribes of Anillini, Trechini (Neotrechus, Aphaenops and Duvalius lines), Pterostichini, Molopini, Sphodrini. The cavernicolous and endogeous Anillini, Pterostichini and Sphodrini from this region have clear relations with the balkanic groups and may be considered as East-Mediterranean faunistic elements. On the contrary, the Trechini of the Neotrechus line are more related to the Caucasian groups, those of the so-called Aphaenops line are endemic of the Caucasus and of …
Xlix Contribution To The Knowledge Of The Amphipoda. On Three Niphargus Species (Fam. Gammaridae) From The Balkans, Gordan S. Karaman
Xlix Contribution To The Knowledge Of The Amphipoda. On Three Niphargus Species (Fam. Gammaridae) From The Balkans, Gordan S. Karaman
International Journal of Speleology
Three Niphargus species from the Balkans are studied. Niphargus adbiptus, n. sp. is described from Ravanica cave in Serbia. Niphargus stygius ravanicanus S. Kar. 1943 from the same cave (Ravanica) is redescribed. N. valachicus Dobr. Man. 1933, is newly recorded from Bulgaria (Devnja).
Les Populations Naturelles De Stanasellus Virei Dollfus (Crustacé Asellote Troglobie), Guy Magniez
Les Populations Naturelles De Stanasellus Virei Dollfus (Crustacé Asellote Troglobie), Guy Magniez
International Journal of Speleology
Many cavernicolous and phreatic localities are known for the species Stenasellus virei. Some of these, which harbor a rather abundant population have been studied for several years. The endemic populations from permanent waters of some fossil karstic systems seem to have an abnormal composition. They include especially large individuals (juvenile stages being rare). They differ from the phreatic populations, which exhibit a normal distribution in size groups with a normal percentage of juveniles. These differences in the structure of populations may result from physical differences between the habitat in free waters of caves and in phreatic water, and from …
Feeding Efficiency In The Cave Salamander Haideotriton Wallacei, Stewart B. Peck
Feeding Efficiency In The Cave Salamander Haideotriton Wallacei, Stewart B. Peck
International Journal of Speleology
Selection for efficiency in food capture may be a dominant influence in the evolutionary biology of predaceous cave animals. A sample of 8 Haideotriton wallacei from a natural population contained 21 feeding boluses in their digestive tracts. Fourteen of these boluses contained food, demonstrating success in at least 67% of the feeding attempts.
Branchiobdellids (Annelida: Clitellata) From Some Eastern North American Caves, With Descriptions Of New Species Of The Genus Cambarincola, Perry C. Holt
International Journal of Speleology
Branchiobdellids are found as epizoites on crustaceans of the orders Isopoda and Decapoda (cambarine crayfishes) in caves of eastern North America. Species that may be considered as troglobites, since they are not known from epigean waters, appear to be confirmed to truly troglobitic isopods and possibly a few troglobitic crayfishes from Florida and the Tennessee-Kentucky Highland Rim cave belt. The majority of the records of branchiobdellids from caves are of representatives of common epigean forms epizootic un crayfishes. Cross-referenced lists of branchiobdellids, their hosts and cave localities are presented. Some of the new species described are apparently troglobitic or troglophilic, …
Aspetti Ecologici Ed Evolutivi Del Popolamento Di Grotte Temperate E Tropicali: Osservazioni Sul Ciclo Biologico Di Alcune Specie Di Ptomaphagus (Coleoptera Catopidae), Valerio Sbordoni, Marina Cobolli-Sbordoni
Aspetti Ecologici Ed Evolutivi Del Popolamento Di Grotte Temperate E Tropicali: Osservazioni Sul Ciclo Biologico Di Alcune Specie Di Ptomaphagus (Coleoptera Catopidae), Valerio Sbordoni, Marina Cobolli-Sbordoni
International Journal of Speleology
Differences between tropical and temperate cave communities are an important topic in the actual biospeleological thinking. Among the most striking differences is the paucity of terrestrial troglobites in tropical caves. This fact may depend on the higher energy input into tropical caves which lessens the selection pressures for energy-economizing troglobite adaptations. Consequently evolutionary rates would be slowed in tropical caves and, in a date group, troglobites would appear later in such caves than in temperate ones with lower energy input. In order to investigate this point the authors studied the degree of adaptation to the cave environment in two species …
Environmental Status Report - January, February, March/April, May, June 1972, Florida Power Corporation
Environmental Status Report - January, February, March/April, May, June 1972, Florida Power Corporation
Reports
The publication of this issue of the Environmental Status Report incorporates the environmental activities of Florida Power Corporation from January to June, 1972_ As with the last Report, a six-month period is included, rather than two separate quarters, due to a scarcity of time_ It is hoped that the next issue will find the Report back on a Quarterly schedule_ The following is a summarization of the Company's supporting and associated activities from January 1, 1972 to June 30, 1972_ This work has been contributed to by many in the Company, and has been coordinated as a principal responsibility of …
A Propos Du Stenasellus Laticarpus Birstein (Crustacea Isopoda Asellota), Guy Magniez
A Propos Du Stenasellus Laticarpus Birstein (Crustacea Isopoda Asellota), Guy Magniez
International Journal of Speleology
The species Stenasellus laticarpus Birstein is closely related to three west-African Stenasellidae, forming the genus Magniezia Lanza. It belongs to the same genus: Stenasellus laticarpus = Magniezia laticarpa (Birstein).
Optic Regression In A Subterranean Mysid (Crustacea, Mysidacea), C. N. Nath, D. M. Thampy, N. K. Pillai
Optic Regression In A Subterranean Mysid (Crustacea, Mysidacea), C. N. Nath, D. M. Thampy, N. K. Pillai
International Journal of Speleology
The eyes of the blind subterranean mysid, Lepidomysis longipes are stalked and paired in the embryonic condition. They fuse together in the adult and the optic ganglia are enclosed in a single eyeplate. The ganglia are arranged in the form of an arc on either side anterodorsal to the brain inside the single eyeplate.
Diploures Campodéidés Des Grottes Du Pendjab (Simlacampa Clayae), C. Bareth, B. Condé
Diploures Campodéidés Des Grottes Du Pendjab (Simlacampa Clayae), C. Bareth, B. Condé
International Journal of Speleology
Four new specimens of Simlacampa clayae Condé, found in two caves in Pundjab (India), give opportunity to improve the original diagnosis and to describe two males and one immature.
La Migration Des Trichoptères Cavernicoles. Mise En Évidence Par Piégeage Lumineux, Yvette Bouvet
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.
Observations Sur Un Aselle Obscuricole De France: Proasellus Racovitzai N.Sp. (Crustacea Isopoda Asellota), Jean-Paul Henry, Guy Magniez
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.
The Evolution Of The Eastern North American Isopods Of The Genus Asellus (Crustacea: Asellidae). Part I, Laurence E. Fleming
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.
A New Genus Of Bulgarian Cave Spiders (Protoleptoneta Bulgarica N.G., N. Sp., Leptonetidae), Christo Deltshev
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 …
Biospeologica Sovietica.Xlix. Le Premier Représentant Anophtalme Des Trechini (Coléoptères Carabiques) De La Ciscaucasie, S. I. Ljovuschkin
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 …
Le Cinquantenaire Du Premier Institut De Spéléologie Du Monde, Traian Orghidan
Le Cinquantenaire Du Premier Institut De Spéléologie Du Monde, Traian Orghidan
International Journal of Speleology
Description of the activities carried out by the first speleological institute of the world, the Institutul de Spéologie “Emil Racovitza”, founded in 1920 at Cluj in Romania.
On The Food And Feeding Habits Of Lepidomysis Longipes (Pillai & Mariamma) (Crustacea Mysidacea), C. N. Nath, N. K. Pillai
On The Food And Feeding Habits Of Lepidomysis Longipes (Pillai & Mariamma) (Crustacea Mysidacea), C. N. Nath, N. K. Pillai
International Journal of Speleology
The amount of food available to the subterranean mysid, Lepidomysis longipes (Pillai & Mariamma, 1964) in its habitat has been calculated and analysed. Lepidomysis appears to feed mainly on decaying vegetable matter. Lepidomysis shows many modifications in its external morphology. Consequently, the mode of feeding has undergone some marked changes from that of its epigean relatives. L. longipes is a discontinuous feeder.
Deux Stenasellidae Cavernicoles Nouveaux De L'Amerique Centrale: Mexistenasellus Parzefalli N. Sp. Et Mexistenasellus Wilkensi N. Sp. (Crustacea Isopoda Asellota), Guy Magniez
International Journal of Speleology
Description of the females of two new species of the family Stenasellidae (anophthalmous and unpigmented Asellota from underground waters). They were found in a little cave of San-Luis Potosi state (Mexico).
Untersuchungen Über Das Nervensystem Von Hexaurus Merkli J. Frivaldzsky (Coleoptera, Bathysciinae), Michail Kwartirnikov
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.
Note On Lepidoptera From Bulgarian Caves, Andrzej W. Skalski
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.
Les Japygidés Cavernicoles De La Faune Française, Jean Pagés
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.