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Articles 1711 - 1740 of 1880

Full-Text Articles in Earth Sciences

Studies On The Abdominal Musculature Of The Subterranean Mysid, Lepidomysis Longipes (Pillai And Mariamma), C. N. Nath Jan 1974

Studies On The Abdominal Musculature Of The Subterranean Mysid, Lepidomysis Longipes (Pillai And Mariamma), C. N. Nath

International Journal of Speleology

The musculature of the hypogean mysid, Lepidomysis longipes (Pillai and Mariamma) is remarkably modified. It shows the absence of many muscles and poor development of others in the abdominal region. This is correlated with the subterranean nature of the animal.

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Momonisia Phreatica N. Gen., N. Sp. (Momoniidae, Hydrachnellae) Des Eaux Souterraines De Bulgarie, A. Petrova Jan 1974

Momonisia Phreatica N. Gen., N. Sp. (Momoniidae, Hydrachnellae) Des Eaux Souterraines De Bulgarie, A. Petrova

International Journal of Speleology

Recent borings in the Veleka River drainage area (South Eastern Bulgaria) have shown a phreatic fauna with a new representative of Hydracarian of the family Momoniidae which constitute the type of a new genus: Momonisia phreatica n. gen. n. sp. The description is here given by the author. The most closely related Momoniid appears to be Momonia karelica Sokolov from Russian Carelia.

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Un Nouvel Asellide Interstitiel D'Espagne Méridionale Bragasellus Boui N. Sp. (Crustacea Isopoda Asellota) Et Considérations Sur Les Genres Européens D'Asellides, Jean-Paul Henry, Guy Magniez Jan 1974

Un Nouvel Asellide Interstitiel D'Espagne Méridionale Bragasellus Boui N. Sp. (Crustacea Isopoda Asellota) Et Considérations Sur Les Genres Européens D'Asellides, 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. Bragasellus boui, n.sp., lives on the bottom of a river that is a tributary of Guadalquivir River (Southern Spain). Bragasellus, Proasellus, Stygasellus and Synasellus are four genuine phyletic lines of European Asellidae, all of them independent of each other, and the authors confirm their validity as true genera.

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Size And Growth Of The Eyes Of The Troglobitic Salamander Typhiotriton Spelaeus, Joseph C. Besharse, Ronald A. Brandon Jan 1974

Size And Growth Of The Eyes Of The Troglobitic Salamander Typhiotriton Spelaeus, Joseph C. Besharse, Ronald A. Brandon

International Journal of Speleology

The eyes of larval T. spelaeus grow by negative allometry, but in allometric coefficients they are not greatly different from E. lucifuga. The major differences in eye size, both absolute and relative to body size, between T. spelaeus and E. lucifuga are established prior Io the larval growth period. The eyes of T. spelaeus cease to grow at metamorphosis and are reduced in size thereafter. In addition, there is increased individual variability and bilateral asymmetry of eye size in adult T. spelaeus compared to both adult E. lucifuga and larval T. spelaeus. This variability, expressed as relative dispersion …

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Geology And Hydrology Of The El Converto Cave-Spring System, Southwestern Puerto Rico, Barry F. Beck Jan 1974

Geology And Hydrology Of The El Converto Cave-Spring System, Southwestern Puerto Rico, Barry F. Beck

International Journal of Speleology

Whereas the North Coast Tertiary Limestones of Puerto Rico are classic karst locales, their southern counterparts are almost devoid of karst development. The El Convento Cave-Spring System is the most prominent feature of the only large scale karst area developed on the South Coast Tertiary limestones. The karst topography is localized on the middle Juana Diaz Formation, which is a reef facies limestone, apparently because of the high density and low permeability of this zone as compared to the surrounding chalks and marls. In the El Convento System a sinking ephemeral stream combines with the flow from two perennial springs …

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Observations Sur Stenasellus Virei Dans Ses Biotopes Naturels (Crustacea Isopoda Asellota Des Eaux Souterraines), Guy Magniez Jan 1974

Observations Sur Stenasellus Virei Dans Ses Biotopes Naturels (Crustacea Isopoda Asellota Des Eaux Souterraines), Guy Magniez

International Journal of Speleology

Thanks to intensive exploration and to new methods for capturing aquatic underground fauna, 117 localities are now known for Stenasellus virei. The description of some typical biotopes suggests that the species lives as well in karstic waters as in phreatic ones, inside the different environment of the hydrogeological classification of subterranean waters. St. virei buchneri and St. v. hussoni are almost cavernicolous. St. v. angelieri is distributed in the underground waters of Catalonia. St. v. boui is located in the underflow of Salat river basin. St. v. virei is widely distributed in the alluvial water-level of Garonne and Ebro …

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A New Centromerus From Bulgarian Caves (Araneae, Linyphiidae), Christo Deltshev Jan 1974

A New Centromerus From Bulgarian Caves (Araneae, Linyphiidae), Christo Deltshev

International Journal of Speleology

A new species, Centromerus milleri, is described, which was collected in the cave “Karangil” near the town of Kardjali, Bulgaria. Centromerus milleri n. sp. belongs to the group of C. pabulator.

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Un Diploure Japygidé Cavernicole Inėdit De Corse Dipljapyx Beroni N.Sp., J. Pages Jan 1974

Un Diploure Japygidé Cavernicole Inėdit De Corse Dipljapyx Beroni N.Sp., J. Pages

International Journal of Speleology

Dipljapyx beroni n.sp. has been collected from two caves in Corsica. From its antennae with 31 articles, chaetotaxia of urites and subcoxal organs well-characterized, it appears to be an endemic Corsican species, situated between D. humberti Grassi found in the western Alps, and D. italicus Silv. peculiar to the Italian Peninsula. It is closely related to the first of those two species. There is no morphologic feature indicating it as a troglophilic species.

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Un Nouvel Asellide Cavernicole D'Espagne Centrale: Bragaselius Lagari N.Sp. (Crustacea Isopoda Asellota), Jean-Paul Henry, Guy Magniez Jan 1973

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).

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La Colonisation De Quelques Grottes Du Jura Par Niphadobota Alpina Bezzi (Dipt. Tipulidae), M. J. Turquin Jan 1973

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.

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Beobachtungen An Markierten Und Unmarkierten Köcherfliegen (Trichoptera) In Der Bärenhöhle Im Lonetal (Schwäbischer Jura), Klaus Dobat Jan 1973

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 …

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Recherches Sur Les Grégarines (Gregarinida: Stenophoridae) Du Diplopode Troglobie Typhloiulus Bureschi Verhoeff En Bulgarie, Vassil Golemansky, Dimitar Taschev Jan 1973

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.

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A New Troglohyphantes From Bulgarian Caves (Araneae, Linyphiidae), Ch. Deltshev Jan 1973

A New Troglohyphantes From Bulgarian Caves (Araneae, Linyphiidae), Ch. Deltshev

International Journal of Speleology

A new species Troglohyphantes drenskii is described, which was collected in the cave “Suchata pestera” near Velingrad, Bulgaria. Troglohyphantes drenskii n.sp. belongs to the group of T. orpheus and is related to T.salax and T.pademontanus.

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Sur Un Nouvel Amphipode Souterrain De Bulgarie Niphargus Kochianus Melticensis N. Ssp., Dan Dancau, Stoitze Andreev Jan 1973

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.

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Trichoniscidae Della Grotta Di Su Mannau, Sardegna Sub-Occidentale (Crustacea, Isopoda), Roberto Argano Jan 1973

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 …

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Fluorescent Dye Determination Of Groundwater Movement And Contamination In Permeable Rock Strata, Charles P. Giammona Jan 1973

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 …

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Observations Sur La Faune Aquatique Souterraine De Cuba, L. Botosaneanu Jan 1973

Observations Sur La Faune Aquatique Souterraine De Cuba, L. Botosaneanu

International Journal of Speleology

A short account on some achievements of the cubano-romanian biospeleological expeditions to Cuba in the study of the aquatic subterranean faunas. The following divisions of the aquatic subterranean realm are reviewed together with their most characteristic faunal elements: “guano pools” and rimstone pools in the vadose zone of the caves; underground streams; water table (and other) lakes in the caves; “pozzos” carved in the limestone, and “grietas” which are vertical clefts in the limestone of marine terraces, giving access to fresh- or to brackish water; the interstitial of the marine beaches; the underflow of running waters. At present, thorough biospeleological …

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Le Deuxième Colloque International Sur Les Genres Niphargus Et Gammarus - Lyon, 1973 Compte-Rendu De Travail Pour Niphargus, R. Ginet Jan 1973

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 …

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Note Sulla Distribuzione Dei Trichoniscidae In Sardegna (Crustacea, Isopoda, Oniscoidea), Roberto Argano, Mauro Rampini Jan 1973

Note Sulla Distribuzione Dei Trichoniscidae In Sardegna (Crustacea, Isopoda, Oniscoidea), Roberto Argano, Mauro Rampini

International Journal of Speleology

The study of the biogeography of the eight species of Isopoda Trichoniscidae from Sardegna brings to consider the faunistic relationships happened in the past between the island and the Pyrenees. Two of the species are eutroglophilous and rather widespread; the other six are troglobic and endemic to Sardinia. Five of the latter show strong affinity to Pyrenees forms. A detailed description is given of the distribution of the various species. This distribution makes possible some observations on the history of the fauna of the island.

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Breeding And Fecundity In A Subterranean Mysid, Lepidomysis Longipes (Pillai And Mariamma), C. N. Nath Jan 1973

Breeding And Fecundity In A Subterranean Mysid, Lepidomysis Longipes (Pillai And Mariamma), C. N. Nath

International Journal of Speleology

The hypogean mysid, Lepidomysis longipes has a breeding period extending from December to April with the peak period in March. A secondary breeding period appears in August and September. The females have low fecundity and carry a maximum of nine eggs. Development is delayed due to lack of nourishment in the environment. The mysids breed only once a year.

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Considerazioni Sui Carabidi Carvernicoli Ed Engogei Dell'asia Minore (Coleoptera, Carabiae), Augusto Vigna Taglianti Jan 1973

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 …

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Ragni Delle Filippine, 1. Un Nuovo Althepus Cavernicolo Dell'isola Di Mindanao (Araneae, Ochyroceratidae), Paolo Marcello Brignoli Jan 1973

Ragni Delle Filippine, 1. Un Nuovo Althepus Cavernicolo Dell'isola Di Mindanao (Araneae, Ochyroceratidae), Paolo Marcello Brignoli

International Journal of Speleology

Althepus noonadanae n.sp. is described (female; male unknown; loc. typ.: Latuan Cave, Curuan district, Mindanao, Philippines); it can be distinguished from the other known species by the morphology of the chelicerae and of the female genitalia. It is not related to any of the very few described species. A key for the female Althepus is given.

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A New Cavernicolous Species Of The Pseudoscorpion Genus Roncus L. Koch, 1873 (Neobisiidae, Pseudoscorpiones) From The Balkan Peninsula, Božidar P. M. Ćurčić Jan 1973

A New Cavernicolous Species Of The Pseudoscorpion Genus Roncus L. Koch, 1873 (Neobisiidae, Pseudoscorpiones) From The Balkan Peninsula, Božidar P. M. Ćurčić

International Journal of Speleology

Roncus (Parablothrus) pljakici, a new species of cave living pseudoscorpions, is described from the cave ‘Pecina u selu Vrelo’ on Mt. Stara Planina, East Serbia. The problem of its taxonomic position in the subgenus is discussed. The new species is the first representative of Parablothrus to be found in Serbia. It seems possible that R. (P.) pljakici represents an endemic species, specialized for a cavernicolous way of living. The analogies of this and other species of the subgenus point to some similar phenomena which occur in other genera of Balkan false scorpions (Ćurčić 1972). In all these cases, a …

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Xlix Contribution To The Knowledge Of The Amphipoda. On Three Niphargus Species (Fam. Gammaridae) From The Balkans, Gordan S. Karaman Jan 1973

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).

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Description Du Mâle De Mexistenasellus Parzefalli (Crustacea Isopoda Asellota Cavernicole Du Mexique) Et Observations Sur Cette Espèce, Guy Magniez Jan 1973

Description Du Mâle De Mexistenasellus Parzefalli (Crustacea Isopoda Asellota Cavernicole Du Mexique) Et Observations Sur Cette Espèce, Guy Magniez

International Journal of Speleology

Description of the male of the Mexican cavernicolous Stenasellid Mexistenasellus parzefalli Magniez, 1972, from Huizache Cave, San-Luis Potosi State, Mexico. In the female with a brood pouch, the coxopodit of the maxilliped contains two provisional, oostegit-like plates, whereas the ovigerous female of european Stenasellids have only the inner one. This temporary sexual female character is known in other Isopods, such as the cavernicolous Caecosphaeroma burgundum Dollfus.

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Les Populations Naturelles De Stanasellus Virei Dollfus (Crustacé Asellote Troglobie), Guy Magniez Jan 1973

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 …

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Feeding Efficiency In The Cave Salamander Haideotriton Wallacei, Stewart B. Peck Jan 1973

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.

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Branchiobdellids (Annelida: Clitellata) From Some Eastern North American Caves, With Descriptions Of New Species Of The Genus Cambarincola, Perry C. Holt Jan 1973

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, …

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Feeding Behavior Of The Salamander Gyrinophilus Porphyriticus In Caves, David C. Culver Jan 1973

Feeding Behavior Of The Salamander Gyrinophilus Porphyriticus In Caves, David C. Culver

International Journal of Speleology

The feeding responses of salamander larvae (Gyrinophilus porphyriticus) from caves in the Powell Valley in Virginia were investigated in the laboratory. The larvae locate prey by mechanoreception and capture the prey by a rapid sucking action, much like cave-limited salamanders do. Feeding success is greater with the isopod Asellus recurvatus (about 90 per cent) than with the amphipod Crangonyx antennatus (about 50 per cent), and this largely accounts for the higher frequency of A. recurvatus taken in choice experiments. G. porphyriticus readily ingested the unfamiliar isopod Lirceus usdagalun, but it took four weeks before it was digested …

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Ii Popolamento Di Ragni Nelle Grotte Tropicali (Araneae), Paolo Marcello Brignoli Jan 1973

Ii Popolamento Di Ragni Nelle Grotte Tropicali (Araneae), Paolo Marcello Brignoli

International Journal of Speleology

The so called “tropical” caves (most of which are also geographically “tropical”) are distinguished from the “temperate” caves by the much larger trophic resources. Spiders are common in both kinds of caves, but the groups present in one kind are mostly absent in the other (notwithstanding that many families are distributed over at least one temperate and one tropical region). As in all temperate caves more or less the same groups of spiders can be found, so the tropical caves have a typical spider fauna, composed of different groups (often also more than those present in the temperate caves). In …

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