ISSN: 2310-2799
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546,196 artículos
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Año:
2020
ISSN:
1852-6098
Hermosilla, Jorge G.
Fundación Miguel Lillo
Resumen
?Endemism of the dinoflagellate species from Foster Bay, Deception Island, Antarctica?
The endemism of Dinoflagellates found in Foster Bay, Deception Island, Antartic is analyzed. The results reveal an 81% of endemism in this area. Protoperidinium obtusum, P. conicum, P. thulesense and Diplopeltopsis minor are visitor species.
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Año:
2020
ISSN:
1852-6098
Maury, Emilio A.
Fundación Miguel Lillo
Resumen
Notes for a zoogeography of the Argentine scorpion fauna?
The geographical distribution of some taxia of argentine scorpions is commented. Several dispersion limits are demarcated and finally a map with Argentine zoogeographical territories determined by the scorpiofauna is included.
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Año:
2020
ISSN:
1852-6098
Orrego Aravena, Reynaldo
Fundación Miguel Lillo
Resumen
?Reptiles of La Pampa province?
La Pampa province (Argentina) presents several geographic regions characterized by the type of soils, plant covering, rain distribution, temperatures, etc. Vipers and snakes are abundant in the east and center while lacertians and tortoises predominate in the west and south. Snakes attacks are infrequent. Thirty nine species have been recorded.
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Año:
2020
ISSN:
1852-6098
S. de Escudero, Graciela; Arenas, Elvira C.; C. de Rübenacker, Marta
Fundación Miguel Lillo
Resumen
?Action of Parasierola nigrifemur (Ash.) (Hym. Behilidae) on Rhyacionia buoliana (Den & Schiff) (Lep. Tortricidae) in artificial pine forests, I. Period 1976-1977?
In order to control Rhyacionia buoliana (?european pine shoot moth?) biologically, some aspects of the relationship between this lepidopterous and the microhymenopterous Parasierola nigrifemur were studied in the Calamuchita Valley, Córdoba. The dispersion capacity of the latter and its parasitic effectiveness were investigated; the fluctuations of its biological eyele in the field, were simultaneously determinated in three zones at different altitude over sea level.
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Año:
2020
ISSN:
1852-6098
Lopretto, Estela C.
Fundación Miguel Lillo
Resumen
On the basis of the close relationships shown by four species of Argentine freshwater crabs of the genus Aegia (A. humahuaca, A, franca, A. jujuyana, and A, sanlorenzo) —the morphology of the fifth pair of pereiopods— a "noroeste" group is established. Its name is referred to the localization of such species, hich are alternatively registered in the Argéntine provinces of Jujuy, Salta, Tucuman, Catamarca and Santiago del Estero. With this ‘‘noroeste”’. group and those that we have’ previously established ("platensis", "cuyano" and "patagónico") there are in toto four groups in which the twelve Argentine species of Aegia wellknown at the present time are included.
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Año:
2020
ISSN:
1852-6098
Capurro S., Luis F.; Ipinza, J.; Grumberg, J.; Solorza, J.
Fundación Miguel Lillo
Resumen
Natural control of populations of Ormiscdes rufosignata (Lepidoptera) through a process of triple parasitoidism?
The fact that the ichneumonids Habronyx albifrons and Hyposoter niger and the tachinid Parasetigena porteri grow in some metamorphosic steps of the butterfly Ormiscodes rufosignata is interpreted as a mechanism of natural control. The role of the natural control related with the insect pests problem is discussed according to the idea that the host species and its pests set up an ecological system. It is suggested that the integrated pest control must be used instead of pesticides which contribute to the water and soil pollution and are aceumulated in the food chains.
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Año:
2020
ISSN:
1852-6098
Turk, Sonia Z.; Barrera, Mauricio
Fundación Miguel Lillo
Resumen
Northwestern Argentina Acridia, III. Bio-ecological study on seven species of the genus Dichroplus Stal. (Orthoptera, Acrididae)?
The different stadia of the biological cycle and some ecological aspects of D. bergi, D. elongatus, D. exilis, D. pratensis, D. punctulatus, D. schulzi, and D. vtttatus, are described. The appearance of macropterous forms of D. schulzi by laboratory rearings is reported as a novelty for this species.
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Año:
2020
ISSN:
1852-6098
Chani, José M.
Fundación Miguel Lillo
Resumen
Color and drawing pattern variations in Teius teyou cyanogaster Miller, 1928 (Lacertilia, Teiidae).- The present paper describes variations in the general dorsal coloration, as weil as, in the dorsal drawing pattern of Teius teyou cyanogaster Miiller, 1928. The existence of a striking sexual dimorphism in the ventral coloration in also mentioned.
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Año:
2020
ISSN:
1852-6098
Grümberg, J.; Capurro, L.; Ipinza, J.
Fundación Miguel Lillo
Resumen
Detection of organophosphorus pesticides in food chains culminating in man?
Blood samples of three groups of bovids belonging to dairy settlements fed on pastures close to zones sprayed with organo-phosphorus pesticides, were analized. The purpose was to detect possible transferenee of these pesticides to the mentioned animals by measuring the inhibition that they produce in the plasma cholinesterase activity. This activity was measured using Michel?s Electrometric Method.
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Año:
2020
ISSN:
1852-6098
Halloy, Stephan
Fundación Miguel Lillo
Resumen
Cyclestheria hislopi (Baird) is found for the first time in Argentina, near the Parana river. Some ecological data obtained at the collecting site are given. C. Sarsiana Thiele is considered a synonym of C. hislopi (Baird). Its pantropical distribution is supoposed to be a relict of a more continuous Gondwana distribution, on the basis of fossil record, Like in other cases, no males have been found.
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