Revista del Museo Argentino de Ciencias Naturales
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Revista del Museo Argentino de Ciencias Naturales

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Acceda a la Revista del Museo Argentino de Ciencias Naturales. Artículos, investigaciones y descubrimientos en biología, geología y paleontología.

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Articles in this Journal

Descriptions of undescribed sexes of Theraphosidae spiders (Mygalomorphae: Plseiopelma, Tmesiphantes) from northern Argentina

Females previously unknown from two Argentinean tarantula (Theraphosidae), Plesiopelma paganoi Ferretti & Barneche, 2014 and Tmesiphantes crassifemur (Gerschman & Schiapelli, 1960) are described for the first time. Both specimens w...

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Astropectinidae (Asteroidea) diversity in the Mar del Plata Submarine Canyon: A deep-water exploration

The family Astropectinidae is one of the most diverse and numerous families of sea stars found in deep waters, particularly well-represented in the Atlantic Ocean. This family comprises 26 genera, with species inhabiting environments rangi...

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Shallow species of Holothuroidea in the collection of the Museo Argentina de Ciencias Naturales “Bernardino Rivadavia” (MACN)

Echinoderms in Argentina are closely associated with the pioneering studies of Irene Bernasconi, particularly regarding sea cucumbers from the collection at the Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN). The Holot...

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Diversity of genus Phromachocrinus Carpenter, 1879 of the National Invertebrates collection, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”

Professor Irene Bernasconi was a pioneer in Antarctic crinoid research in Argentina, with her work on Promachocrinus kerguelensis published in 1932. This study review Promachocrinus material housed in the collection of the Museo Argentino...

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Biodiversity, bathymetric distribution, and reproductive strategies of sea stars (Echinodermata: Asteroidea) in the Argentine Sea

Sea stars (Echinodermata: Asteroidea) are widely distributed across all oceans, with numerous species inhabiting the Argentine Sea. This region is highly productive and sustains a rich diversity of marine invertebrates. The present work ai...

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Ecological role of the sea urchin Austrocidaris canaliculata (Cidaroida: Cidaridae) as a basibiont: Epibiont assemblages in the Marine Protected Area Namuncurá – Burdwood Bank and adjacent deep areas

Organisms that provide settlement sites for sessile fauna play a key role in shaping the structure of benthic communities. Sea urchins of the order Cidaroida can offer these sites for settlement on their primary spines, which lack antifoul...

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Hidden biodiversity in the Southwestern Atlantic Ocean: brittle stars from the Mar 2 del Plata Submarine Canyon, Argentina

Among the phylum Echinodermata, the class Ophiuroidea is the most diverse, with brittle stars being widely distributed across benthic environments worldwide. However, this trend is not consistently observed in the Southwestern Atlantic, wh...

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A century of echinoderm research in Argentina: Irene Bernasconi’s lasting legacy from 1925, with notes on type material and publication chronology

Irene Bernasconi was a pioneering and internationally recognized echinoderm specialist from Argentina. Her career, which spanned nearly six decades, was marked by significant contributions to the taxonomy of echinoderms, particularly those...

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Seasonal population structure of the sea star Anasterias antarctica in intertidal boulders of the Protected Natural Area Puerto Lobos, Atlantic Patagonia

Intertidal boulders are complex marine environments which support unique marine assemblages, including species generally restricted to tide-pools, and also characteristics which make them ideal for experimental studies to further understan...

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Asteroidea (Echinodermata) from Uruguay (SW Atlantic): an annotated checklist and zoogeographic considerations

The diversity of Asteroidea from the Southwestern Atlantic between 30° S and 40° S (southern Brazil, Uruguay, and northern Argentinean waters) has been studied since the late 19thcentury. However, like many other benthic metazoans, the exi...

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Oral brooding (Anasterias antarctica) versus internal brooding (Diplopteraster verrucosus): Contrasting strategies of the brooded juveniles for full development

Both sea star species in this study are brooders from the South Atlantic. Anasterias antarctica displays a complex reproductive cycle involving incubation during eight or nine months and it broods its offspring over the mouth, while Diplop...

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Development patterns and oxidative metabolismof antarctic sea stars

Sea stars exhibit different development patterns that comprise indirect and direct development, including pelagic or benthic larvae, and planktotrophic or lecithotrophic nutrition. The purpose of our research was to study the general param...

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External malformations in the green sea urchin Arbacia dufresnii (Blainville, 1825) in populations from Golfo Nuevo, Patagonia, Argentina

Malformations in sea urchins can manifest in various forms, often influenced by environmental and biological factors. Adult Arbacia dufresnii (Blainville, 1825) exhibit pentaradial symmetry, spines in the ambulacral areas, absence of spine...

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A chronology of the genus Thylamys (Didelphidae, Thylamyini), with emphasis in the forms occurring in Argentina

The genus Thylamys includes several species of small mouse opossums living predominantly in arid and semi-arid regions of South America. In Argentina, where the genus has more species, different species have been recognized (T. bruchi, T....

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The composition of fatty acids in female gametes of Arbacia dufresnii (Arbaciidae: arbacioida) in the population of Bahía Norte, Nuevo gulf indicates good nutritional conditions

Here we study the population of Arbacia dufresnii in two locations within Nuevo Gulf (Bahía Norte and Punta Cuevas), Argentina, focusing on their size, density, and nutritional status through fatty acid (FA) profiles. Sea urchins were coll...

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