scholarly journals Ecotoxicity in the Reconquista River, Province of Buenos Aires, Argentina: A Preliminary Study

1996 ◽  
Vol 104 (2) ◽  
pp. 186 ◽  
Author(s):  
Jorge Herkovits ◽  
Cristina Silvia Perez-Coll ◽  
Francisco Damian Herkovits
Keyword(s):  
Buenos Aires ◽  
Reconquista River ◽  
Preliminary Study

scholarly journals Ecotoxicity in the Reconquista River, province of Buenos Aires, Argentina: a preliminary study.

1996 ◽  
Vol 104 (2) ◽  
pp. 186-189 ◽  
Author(s):  
J Herkovits ◽  
C S Perez-Coll ◽  
F D Herkovits
Keyword(s):  
Buenos Aires ◽  
Reconquista River ◽  
Preliminary Study

scholarly journals Galls of Cecidoses eremita Curtis and Eucecidoses minutanus Brèthes (Lepidoptera: Cecidosidae) in Magdalena, Buenos Aires Province: preliminary study and associated fauna

2016 ◽  
Vol 16 (4) ◽  
Author(s):  
Veronica Loetti ◽  
Alejandra Valverde ◽  
Diana Nora Rubel
Keyword(s):  
Wall Thickness ◽  
Buenos Aires ◽  
Maximum Diameter ◽  
Buenos Aires Province ◽  
Associated Fauna ◽  
The Family ◽  
Preliminary Study

Abstract In Argentina, five galling species of the family Cecidosidae (Lepidoptera), including Cecidoses eremita Curtis and Eucecidoses minutanus Brèthes, have been cited. This note reports a preliminary study of their galls in "molles" (Schinus longifolius (Lindl.) Speg.) of Magdalena (Buenos Aires, Argentina). In April 2013, galls of C. eremita and E. minutanus were censused in randomly selected "molles". In April and December 2013, randomly selected galls were then collected and transported to our laboratory in hermetic bags, and conserved at -18 ºC until examination. Maximum diameter and wall thickness of collected galls were measured. About 84% of the observed "molles" (103/123) had galls of C. eremita and/or E. minutanus. The median of galls per tree was 12 (Q1=6; Q3=22). Eucecidoses minutanus had galls with smaller diameter (U11;53= 583; P<0.05) and thinner wall (U10;52=506.5; P<0..05) than C. eremita. In open galls, we found Pseudoescorpionida, Araneae (Segestriidae and Salticidae), and larvae of Lepidoptera and Hymenoptera. Within closed galls, we found adults of Torymidae and Chalcidoidea, and larvae of Ichneumonoidea.

scholarly journals Impact of the Morón stream on water quality of the Reconquista River (Buenos Aires, Argentina)

2000 ◽  
Vol 2 ◽  
pp. 123-130 ◽  
Author(s):  
Laura de Cabo ◽  
Silvana Arreghini ◽  
Alicia Fabrizio ◽  
Alicia Rendina ◽  
Marta Bargiela ◽  
...  
Keyword(s):  
Water Quality ◽  
Buenos Aires ◽  
Reconquista River

418 EFFECT OF SUPEROVULATION INITIATED AT FOLLICULAR WAVE EMERGENCE IN Santa Inês EWES

2010 ◽  
Vol 22 (1) ◽  
pp. 366
Author(s):  
B. D. M. Silva ◽  
T. A. S. N. Silva ◽  
L. Dalcin ◽  
C. M. Lucci ◽  
J. P. Neves
Keyword(s):  
Total Dose ◽  
Buenos Aires ◽  
Ovarian Response ◽  
Corpora Lutea ◽  
Dominant Follicle ◽  
Treatment Groups ◽  
Follicular Wave ◽  
Preliminary Study ◽  
Santa Inês ◽  
Fresh Semen

Superovulation in ewes has been a source of many studies aimed at obtaining high superovulatory response and number of viable embryos recovered. In a protocol called Day 0, superovulatory treatment was initiated at the time of wave emergence in the absence of a dominant follicle (Menchaca A et al. 2002 Theriogenology 58, 1713-1721). The aim of this study was to compare ovarian response and number of embryos recovered after treatment between ewes treated with a Day 0 protocol and those treated with a traditional protocol. Santa InÊs ewes (n= 18) between 2 and 5 years old were randomly distributed into 2 superovulation treatment groups: traditional protocol and Day 0 protocol. Each treatment was repeated twice in a crossover model. The traditional protocol consisted of the intravaginal insertion of a sponge containing 60 mg of medroxiprogesterone acetate (MAP; Progespon®, Tecnopec, São Paulo, Brazil) for 14 days, which was replaced on Day 7, followed by 150 μg of cloprostenol (Prolise®, Tecnopec) i.m. On Day 12, FSH (Folltropin®-V, Bioniche, Belleville, Ontario, Canada) treatment was initiated using a total dose of 200 mg, given in twice-daily i.m. injections that decreased in dose over 4 days. A dose of 200 IU of eCG (Novormon®, Syntex, Buenos Aires, Argentina) i.m. was given at the time of sponge withdrawal. The AI was done by laparoscopy at 48 and 55 h after sponge withdrawal using fresh semen. The Day 0 protocol consisted of a previous 9-day synchronization treatment with a sponge containing 60 mg of MAP, followed by 150 μ of cloprostenol i.m. and 200 IU of eCG i.m. given on Day 7. A dose of 0.05 mg of GnRH (lecirelin; Gestran Plus®, Tecnopec) i.m. was given 16 h after sponge withdrawal. In a preliminary study, 38 ewes ovulated 42 ± 52 h after sponge withdrawal. Therefore, 48 h after sponge removal was considered as Day 0 and FSH treatment was initiated at that time, with a total dose of 200 mg of Folltropin®-V, given in 6 twice-daily decreasing doses. Two doses of cloprostenol (150 μg) were given i.m. concurrent with the fifth and sixth FSH treatments. Gonadotropin-releasing hormone (0.05 mg of lecirelin i.m.) was given 12 h after the last FSH treatment. Artificial insemination with fresh semen was done by laparoscopy 16 and 26 h after GnRH treatment. Five days after AI, embryos were recovered surgically. Results were evaluated by the parametric t-test. The number of corpora lutea and ova/embryos recovered did not differ (P > 0.05) between the traditional (9.8 ± 5.3; 4.5 ± 4.6) and Day 0 (10.0 ± 6.0; 3.5 ± 4.3) protocols. Similarly, no difference in the number of viable embryos was observed between treatments (1.6 ± 2.0 and 1.7 ± 2.4 for the traditional and Day 0 treatments, respectively). Within viable embryos, the traditional protocol (0.4 ± 1.0) resulted in ahigher (P < 0.05) number of morulae than that of the Day 0 protocol (0.1 ± 0.3). The ewes that had no superovulatory response did not differ (P > 0.05) between the traditional (11.11%) and Day 0 (5.56%) protocols. In summary, there was no difference in the parameters evaluated between both protocols. Financial support: FAPDF, CNPq, Tecnopec.

Impact of human activities on the water quality of the Reconquista River (Buenos Aires, Argentina)

1998 ◽  
Vol 26 (3) ◽  
pp. 1206-1208
Author(s):  
Patricia M. Castañé ◽  
Mirta L. Topalián ◽  
María G. Rovedatti ◽  
A. Salibián
Keyword(s):  
Water Quality ◽  
Human Activities ◽  
Buenos Aires ◽  
Reconquista River

Effect of a reservoir in the water quality of the Reconquista River, Buenos Aires, Argentina

2013 ◽  
Vol 185 (11) ◽  
pp. 9161-9168 ◽  
Author(s):  
Laura N. Rigacci ◽  
Adonis D. N. Giorgi ◽  
Carolina S. Vilches ◽  
Natalia Alejandra Ossana ◽  
Alfredo Salibián
Keyword(s):  
Water Quality ◽  
Buenos Aires ◽  
Reconquista River

Effect of silicate fertilizers on wheat and soil properties in Southeastern Buenos Aires province, Argentina. A preliminary study

2019 ◽  
Vol 195 ◽  
pp. 104412 ◽  
Author(s):  
Celia Frayssinet ◽  
L. Margarita Osterrieth ◽  
L. Natalia Borrelli ◽  
Mariana Fernández Honaine ◽  
Esteban Ciarlo ◽  
...  
Keyword(s):  
Soil Properties ◽  
Buenos Aires ◽  
Buenos Aires Province ◽  
Preliminary Study

Seismic hazard in Buenos Aires, Argentina: A preliminary study on the effects of long-distance earthquakes on tall buildings

2018 ◽  
Vol 47 (11) ◽  
pp. 2333-2339
Author(s):  
Raúl D. Bertero ◽  
Sebastián Vaquero ◽  
Juan M. Mussat ◽  
Agustín Bertero
Keyword(s):  
Seismic Hazard ◽  
Buenos Aires ◽  
Tall Buildings ◽  
Long Distance ◽  
Preliminary Study
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