Taxonomic and Serological Researches on the Phymaturus patagonicus Complex

Five subspecies of Phymaturus from Argentine Patagonia are identified: P. patagonicus patagonicus Koslowsky, P. patagonicus indistinctus subsp. nov., both from Chubut, P. patagonicus somuncurensis, subsp. nov. from Rio Negro, P. patagonicus zapaiensis subsp. nov. from Neuquén, and P. patagonicus payuniae subsp. nov. from Southern Mendoza. Their morphological and ecological features are described according to their widespread but isolated distribution. Quantitative immunological analyses emphasize the close affinities of the 5 proposed subspecies and their more distant relationships to P. palluma which is sympatric with P. patagonicus in Mendoza and Neuquén.Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Muse

Taxonomic and Serological Researches on the Phymaturus patagonicus Complex

Five subspecies of Phymaturus from Argentine Patagonia are identified: P. patagonicus patagonicus Koslowsky, P. patagonicus indistinctus subsp. nov., both from Chubut, P. patagonicus somuncurensis, subsp. nov. from Rio Negro, P. patagonicus zapaiensis subsp. nov. from Neuquén, and P. patagonicus payuniae subsp. nov. from Southern Mendoza. Their morphological and ecological features are described according to their widespread but isolated distribution. Quantitative immunological analyses emphasize the close affinities of the 5 proposed subspecies and their more distant relationships to P. palluma which is sympatric with P. patagonicus in Mendoza and Neuquén.Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Muse

Green Root Collective Action for Conservation of Agri-Bio Diversity: a Case Study in Tuscany

The literature on environmental policy shows that institutional arrangements are key in designing effective environmental policies. Besides regulation and market (Coasian) solutions, grass root collective action has been advocated as a possible solution for the provision of agro-environmental public goods. We gauge that the same institutional arrangement can be found in many territorially integrated food chains that aims at re-embedding food production in the local society. Building on this literature, we present a case study - a short supply chain for bread production from ancient local wheat landraces in Tuscany – emphasizing the role played by collective action in maintaining high quality production in a context of severe information asymmetries

The histology of dermal glands of mating Breviceps with comments on their possible functional value in microhylids (Amphibia: Anura)

During mating male and female Breviceps become ‘glued’ together. The distribution of multicellular dermal glands varies between the sexes. The mate has a large number of holocrine glands on the ventrum, while the female has similar glands on the dorsum of the back. II thus appears that both sexes contribute to the ‘glueing’ mechanism. New hypotheses to explain the adhesion between the sexes are proposed, viz., that the shift to terrestrial habils and subterranean laying in Breviceps have secondarily resulted in male si2e diminution. In other microhylids which adhere during aquatic oviposition, yet demonstrate a terrestrial morphology and habits, bouyancy is suggested to be of primary functional value.Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Muse

The histology of dermal glands of mating Breviceps with comments on their possible functional value in microhylids (Amphibia: Anura)

During mating male and female Breviceps become ‘glued’ together. The distribution of multicellular dermal glands varies between the sexes. The mate has a large number of holocrine glands on the ventrum, while the female has similar glands on the dorsum of the back. II thus appears that both sexes contribute to the ‘glueing’ mechanism. New hypotheses to explain the adhesion between the sexes are proposed, viz., that the shift to terrestrial habils and subterranean laying in Breviceps have secondarily resulted in male si2e diminution. In other microhylids which adhere during aquatic oviposition, yet demonstrate a terrestrial morphology and habits, bouyancy is suggested to be of primary functional value.Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Muse

Atlas de los vertebrados inferiores de la Región de Cuyo

The geographical and altimetric distribution of Amphibians, Reptiles and Fishes from the Andean and Subandean regions of Cuyo —Mendoza and San Juan provinces— is summarized in 30 representative maps. The patterns, of species distribution are shown by symbols which point out localities or limited areas;where' specimens or samples have been collected, and photographic or ecological records registered. Short indicative notes emphasize the most important biogeographical traits of the yet reported 9 species of Amphibians, 55 species and subspecies of Reptiles, and 10 species of Fishes. The collections of the Instituto de Biologfa Animal of the Universidad Nacional de Cuyo, Mendoza, and those of the Museo de Historia Natural of the city of San Rafael, Mendoza State, are the basic information sources of maps and reports«Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Muse

Atlas de los vertebrados inferiores de la Región de Cuyo

The geographical and altimetric distribution of Amphibians, Reptiles and Fishes from the Andean and Subandean regions of Cuyo —Mendoza and San Juan provinces— is summarized in 30 representative maps. The patterns, of species distribution are shown by symbols which point out localities or limited areas;where' specimens or samples have been collected, and photographic or ecological records registered. Short indicative notes emphasize the most important biogeographical traits of the yet reported 9 species of Amphibians, 55 species and subspecies of Reptiles, and 10 species of Fishes. The collections of the Instituto de Biologfa Animal of the Universidad Nacional de Cuyo, Mendoza, and those of the Museo de Historia Natural of the city of San Rafael, Mendoza State, are the basic information sources of maps and reports«Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Muse

Datos preliminares sobre las componentes de la herpetofauna de la provincia de San Juan

El presente bosquejo preliminar, además de los datos originales consignados, se propone subrayar el interés herpetofaunístico de la Provincia de San Juan, de transición entre los dominios Chaqueño, del Monte, Andino y Subandino, la que había quedado como una verdadera laguna en los conocimientos zoológicos de los vertebrados inferiores de Argentina. El registro efectuado hasta aquí de seis (6) especies de anfibios y treinta (30) especies de reptiles existentes en la Provincia de San Juan, pone énfasis sobre el carácter de zona árida de la misma y sobre el valor ecológico de las adaptaciones animales en condiciones extremas de vida -humedad relativa, temperatura- como en el caso de las formas psamófilas.A preliminary report on herpetofaunal communities of San Juan province, western Argentina, is given. Four fundamental districts are recognized. They are: the high Andean district, including Cordilleras and the longitudinal highlands of the Calingasta-Angualasto valley; the subandean or precordilleran transition range; the sandy, xerophilous central and eastern district, along the dry Río Bermejo basin; the Valle Fertil subtropical district, covered by the remnants of the Chacoan Schinopsis wood formation.Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Muse

Atlas de los vertebrados inferiores de la Región de Cuyo

The geographical and altimetric distribution of Amphibians, Reptiles and Fishes from the Andean and Subandean regions of Cuyo —Mendoza and San Juan provinces— is summarized in 30 representative maps. The patterns, of species distribution are shown by symbols which point out localities or limited areas;where' specimens or samples have been collected, and photographic or ecological records registered. Short indicative notes emphasize the most important biogeographical traits of the yet reported 9 species of Amphibians, 55 species and subspecies of Reptiles, and 10 species of Fishes. The collections of the Instituto de Biologfa Animal of the Universidad Nacional de Cuyo, Mendoza, and those of the Museo de Historia Natural of the city of San Rafael, Mendoza State, are the basic information sources of maps and reports«Material digitalizado en SEDICI gracias a la colaboración del Dr. Jorge Williams (FCNM-UNLP).Facultad de Ciencias Naturales y Muse