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You searched for: Author maria Remove constraint Author: maria Subject term Argentina Remove constraint Subject term: Argentina Subject term breeding Remove constraint Subject term: breeding Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Akodon molinae (Rodentia Cricetidae), a new laboratory animal: breeding, management and reproductive performance

Author:
Maria Susana Merani,   et al.   ; Marta Susana Lizarralde;     Show all 2 Author
Source:
Laboratory animals 1980 v.14 no.2 pp. 129-131
ISSN:
1758-1117
Subject:
Cricetidae; breeding; chromosomes; females; fever; laboratory animals; males; mice; monogamy; pregnancy; reproductive performance; sex ratio; sexual maturity; voles; weaning; Argentina
Abstract:
... Akodon molinae, a vole mouse widely distributed in central Argentina, shows remarkable chromosome polymorphisms. It is one of the natural reservoirs of the actiologic agent of haemorrhagic fever, and a laboratory colony could be of great help in investigating this disease. Pregnancy lasted 23 (range 21-25) days. Litters of 4-5 young were born to monogamous breeding pairs about every 30 days, with ...
DOI:
10.1258/002367780780942944

2. Drivers of clutch-size in Fork-tailed Flycatchers (Tyrannus savana) at temperate and tropical latitudes in South America

Author:
Ana Maria Mamani,   et al.   ; Alex E. Jahn; Diego T. Tuero; Vanesa Bejarano; Diego Anibal Masson; Eluney Aguilar;     Show all 6 Authors
Source:
Emu 2014 v.114 no.4 pp. 337-342
ISSN:
1448-5540
Subject:
arthropods; birds; breeding; clutch size; eggs; food availability; geographical variation; grasslands; latitude; life history; nestlings; nests; predation; tropics; Argentina; Bolivia
Abstract:
... Many species of birds exhibit a latitudinal gradient in annual reproductive investment, laying more eggs and producing more nestlings at higher latitudes. However, few studies have evaluated the mechanisms that underlie such patterns and such differences in grassland birds specifically. We monitored nests of Fork-tailed Flycatchers (Tyrannus savana) over two breeding seasons at a tropical site in ...
DOI:
10.1071/MU13084

3. Reproductive behavior of the wild carrots Daucus pusillus and Daucus montanus from Argentina

Author:
Maria S. Ibañez,   et al.   ; Elsa L. Camadro;     Show all 2 Author
Source:
Botany 2015 v.93 no.5 pp. 279-286
ISSN:
1916-2804
Subject:
Daucus carota; autogamy; biological speciation; breeding; carrots; chromosome number; diploidy; ex situ conservation; flowering; fluorescence microscopy; germ cells; hexaploidy; inflorescences; pistil; pollen; reproductive behavior; viability; Argentina
Abstract:
... Diploid Daucus pusillus Michx. (x = 11) and hexaploid Daucus montanus Humb. et Bonpl. ex Schult. (x = 11) are wild taxonomic carrot species, closely related to diploid Daucus carota L. (x = 9), spontaneous in Argentina. For efficient ex situ conservation and potential use in breeding, we investigated their reproductive behavior by (i) carrying out controlled pollinations among D.pusillus accession ...
DOI:
10.1139/cjb-2014-0243

4. Demographic history of the Magellanic Penguin (Spheniscus magellanicus) on the Pacific and Atlantic coasts of South America

Author:
Gabriella Cardoso Maria,   et al.   ; Gisele Pires Mendonça Dantas; Anna Carolina Milo Marasco; Larissa Tormena Castro; Vanessa Simão Almeida; Fabricio Rodrigues Santos; Larissa Rosa Oliveira; Enrique Crespo; Esteban Frere; Anna Milliones; Daniel González-Acuña; João Stenghel Morgante; Juliana A. Vianna;     Show all 13 Authors
Source:
Journal of ornithology 2018 v.159 no.3 pp. 643-655
ISSN:
2193-7192
Subject:
Spheniscus; breeding; climate; climate change; coasts; continental shelf; extinction; gene flow; genes; genetic variation; islands; microsatellite repeats; mitochondrial DNA; oceans; penguins; population growth; population structure; sea level; Argentina; Atlantic Ocean; Chile; Falkland Islands
Abstract:
... Spatial subdivision, local extinction and recolonization influence the genetic variation of natural populations. Different levels of population structure can be identified in nature, from panmictic populations, in which high gene flow homogenizes diversity across localities, to metapopulations, where combinations of moderate to high levels of population differentiation and source-sink population d ...
DOI:
10.1007/s10336-018-1538-z

5. Space Use and Social Mating System of the Hantavirus Host, Oligoryzomys longicaudatus

Author:
Maria Cecilia Provensal,   et al.   ; Ernesto E. Juan; Andrea R. Steinmann;     Show all 3 Authors
Source:
EcoHealth 2018 v.15 no.1 pp. 96-108
ISSN:
1612-9202
Subject:
shrublands; etiological agents; autumn; polygyny; males; breeding; habitats; spring; home range; Andes orthohantavirus; mating systems; Oligoryzomys longicaudatus; females; adults; Argentina; Chile; Andes region
Abstract:
... The long-tailed mouse, Oligoryzomys longicaudatus (Cricetidae: Sigmodontinae), is the major host of Andes hantavirus, the etiological agent of hantavirus pulmonary syndrome in the south of Argentina and Chile. Studying the ecology of this species is necessary to understand how Andes hantavirus is maintained in nature. In this study, we examine the home range size and intra- and intersexual overlap ...
DOI:
10.1007/s10393-017-1301-6