Tamara Rubilar

Tamara Rubilar
Centro para el Estudio de Sistemas Marinos (CESIMAR CCT CENPAT CONICET) · Laboratorio de Quimica de Organismos Marinos (IPAM UNPSJB)

Dr.

About

39
Publications
63,458
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
314
Citations
Citations since 2016
24 Research Items
227 Citations
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
Introduction
With the pandemic we pivoted our research, focusing our efforts on finding solutions for COVID-19 and found the possibility of alleviating symptoms in patients with comorbidity. Since March 2020 we are 100% focused on this issue with the PROJECT EchA al COVID-19 and we have already made great progress that allows us to propose a medical test using Echinochroma A as an active principle, a molecule present in sea urchin eggs. Around this project we have been recognized by the National Senate.
Additional affiliations
January 2010 - January 2012
National University of Patagonia San Juan Bosco
Position
  • Proffesor of Comparative Animal Histology
January 2010 - January 2013
National University of Comahue
Position
  • Proffesor Assitant
April 2005 - present
Centro Nacional Patagonico
Position
  • Researcher

Publications

Publications (39)
Article
Undaria pinnatifida is one of the most successful marine invasive species worldwide. Since its first detection in Nuevo Gulf (Argentina), changes in the species richness and diversity of native algae and macrofauna have been reported. Knowledge of the invasive alga-native grazer interaction is key to better understand ecosystem dynamics and the pot...
Article
Full-text available
The study of benthic communities comprises a valuable resource which can be applied in securing high quality environmental knowledge and data. Benthic communities in the Northwest of San Matías Gulf have been studied as the by-catch of commercial fisheries. The phylum Echinodermata is usually found to be a dominant group within these communities, b...
Article
Full-text available
Background: Echinochrome A (EchA) is a pigment from sea urchins. EchA is a polyhy-droxylated 1,4-naphthoquinone and contains a number of hydroxyl groups appropriate for free-radical scavenging, and for diminishing ROS and preventing redox imbalance. EchA is the most studied molecule of this family and is an active principle approved to be used in h...
Article
Full-text available
Introduction: Sea urchin gonads (roe or uni) are considered a culinary delicacy worldwide. However, only a few species are considered edible and commercialized. The sea urchin Tripneustes depressus has generated the interest of producers in Baja California Sur, Mexico, due to the quality of its gonads. A biological basis for designing a management...
Article
Full-text available
Introducción: El aumento de los valores del CO2 atmosférico y el consecuente calentamiento del agua de mar constituyen factores de estrés para los ecosistemas marinos, renovando el interés en la fisiología de los equinoideos. El equinoideo Arbacia dufresnii es una especie ampliamente estudiada y con amplia distribución en los golfos norpatagónicos....
Article
Full-text available
Introduction: The Three R´s Principle (Refinement, Reduction, and Replacement), postulated more than 60 years ago, is the main ethical framework currently applied for conducting animal research. This principle has never been reviewed applying a philosophical reflection during all of these years, even though a variety of animal ethics studies have p...
Article
Full-text available
Introduction: Density is one of the critical factors in echinoderm larvae for aquaculture purposes. Echinoplutei larvae are very sensitive to overcrowding. High culture density can lead to problems with bacteria or protozoa, decreasing survival and generating abnormal morphotypes. Objective: To evaluate the effect of culture density on survival and...
Article
Full-text available
Introduction: Photoperiod is, together with temperature and food availability, one of the main stimuli in the regulation of gametogenesis in a wide variety of species. Objective: To evaluate the effect of photoperiod on the production of mature gametes in cultured Arbacia dufresnii. Methods: An experiment was carried out with three varying light-da...
Article
Full-text available
Introduction: Embryonic and larval development in sea urchins is highly dependent on maternal nutritional status and on the environmental conditions of the seawater. Objective: To compare the development of Arbacia dufresnii in two different water temperatures and in progeny with varying maternal origins. Methods: We induced A. dufresnii females an...
Article
Full-text available
Introduction: Sea urchin gonads (roe or uni) are considered a culinary delicacy worldwide. However, only a few species are considered edible and commercialized. The sea urchin Tripneustes depressus has generated the interest of producers in Baja California Sur, Mexico, due to the quality of its gonads. A biological basis for designing a management...
Article
Full-text available
Efecto de la temperatura sobre la morfología y reproducción en el erizo de mar Arbacia dufresnii (Echinodermata: Echinoidea) ABSTRACT Effect of temperature on morphology and reproduction of sea urchin, Arbacia dufresnii (Echinodermata: Echinoidea) Introduction: The increase in atmospheric CO 2 values and the consequent warming of seawater constitut...
Article
Full-text available
Introduction: "Blue Economy" refers to ocean-based economies with a sustainable approach. It focuses in smaller carbon footprints and efficiency, principles that can be applied to aquaculture. However, it has been difficult to develop successful blue economy projects in sea urchin aquaculture. Objective: To compare URCHINOMICS (Norway) and ARBACIA...
Preprint
Full-text available
The SARS-CoV-2 outbreak has spread rapidly and globally generating a new coronavirus disease (COVID-19) since December 2019 that turned into a pandemic. Effective drugs are urgently needed and drug repurposing strategies offer a promising alternative to dramatically shorten the process of traditional de novo development. Based on their antiviral us...
Preprint
Full-text available
The SARS-CoV-2 outbreak has spread rapidly and globally generating a new coronavirus disease (COVID-19) since December 2019 that turned into a pandemic. Effective drugs are urgently needed and drug repurposing strategies offer a promising alternative to dramatically shorten the process of traditional de novo development. Based on their antiviral us...
Preprint
Full-text available
In the last few months, several studies have been published regarding the interaction between the Spike protein of the novel coronavirus SARS-CoV-2 and ACE2 receptor in the host cells. In the present work, we evaluated the in silico properties of two sea urchin pigments, Echinochrome A (EchA) and Spinochromes (Spin A) against Spike protein (S) towa...
Preprint
Full-text available
Several studies have been published regarding the interaction between the spike protein of the novel coronavirus SARS-CoV-2 and ACE2 receptor in the host cells. In the presente work, we evaluated the in silico properties of two sea urchin pigments, Echinochrome A (EchA) and Spinochromes (SpinA) against the Spike protein (S) towards finding a potent...
Article
Full-text available
Sea urchin gonads contain nutritive phagocytes (NP) that store nutrients such as protein, lipid and carbohydrates for use during the production of gametes. While there is some information on the role of protein, particularly major yolk protein (MYP), during gametogenesis, very little is known about the role of lipids and their component fatty acids...
Article
Full-text available
There are different ethical approaches regarding Nature, however, invertebrates are rarely considered from an ethical perspective. Invertebrates represent more than 90% of the species that inhabit our entire planet. Since they are easy to breed, reproduce and keep them alive under laboratory conditions, are widely used in scientific research. Inver...
Article
Full-text available
Traditional ethics reflection centers the discussion in conflicts that affect humans. According to epistemology-based ethics, facts are needed to include other living beings as object of ethical consideration. In this sense, huge efforts have been made to demonstrate that animal suffering is real. However, the ethical reflection only reaches large...
Article
Full-text available
Population parameters of the sea urchin Arbacia dufresnii (Blainville, 1825) from North Patagonian gulfs invaded by kelp Undaria pinnatifida (Harvey) Suringar, 1873. The Asian seaweed Undaria pinnatifida invaded Argentina in 1992 (Golfo Nuevo, Patagonia). Its range has expanded and it has changed the native benthic community. Sea urchins are usuall...
Article
Full-text available
The Asian seaweed Undaria pinnatifida invaded Argentina in 1992 (Golfo Nuevo, Patagonia). Its range has expanded and it has changed the native benthic community. Sea urchins are usually generalist herbivores that have a key role in controlling seaweeds. Arbacia dufresnii is the most abundant sea urchin in the coastal areas of northern Patagonia. Th...
Article
Full-text available
Seaurchinshavebeenusedasa sourceoffoodfromprehistorictimesandasaresearchanimalmodelsincethe19th century.Theypresentlyareharvestedinmanypartsoftheworld.InArgentina,seaurchinshavebeenstudiedonlyfrombiological perspectives. Of the 14 species of sea urchins found off the coast of Argentina, Arbacia dufresnii is the most abundant. It is an omnivorous sp...
Poster
Full-text available
Se conocen en todo el mundo alrededor de 1900 especies vivientes de Asteroidea La mayoría de éstas presentan reproducción sexual con presen-cia de larvas, mientras que sólo se conoce la fami-lia Pterasteridae con desarrollo directo Sin embargo , una menor proporción de especies posee reproducción asexual por fisión (aproximadamen-te 24) o porparten...
Chapter
For many biologists the nervous system is a particularly fascinating organ system. The nervous system is involved in or is even responsible for many features that are regarded as being characteristic of animals in general. Since the last comprehensive work was published about 50 years ago, the time has probably come to provide a new review on recen...
Article
Full-text available
Wound healing in the arm tip after amputation in the brittle star Ophioplocus januarii was examined in San José gulf, Argentina, to observe histological and morphological changes. The process of wound healing is described and compared with other brittle stars species. This process in O. januarii involves the closure of the wound, the repair of the...
Article
Full-text available
Many studies have focused on the regeneration rate of arms in Asteroidea but no studies have focused on the regeneration rate after fission. Allostichaster capensis is a fissiparous sea star with a wide range of distribution. In Golfo Nuevo (42°46’49’’ S - 64°59’ 26’’ W) sea stars undergo fission every spring and summer and regenerate the rest of t...
Article
Full-text available
The relative size of the Aristotle’s lantern of most sea urchins varies in relation to the food availability and it is often used to infer the availability of food of the environment. The aim of our study was to evaluate the lantern morphology plasticity of Arbacia dufresnii in populations with different environmental characteristics, either mussel...
Article
Full-text available
This study reports nutrient allocation in different stages of gonadal development for two populations of the sea urchin Arbacia dufresnii off the Patagonian coast of Argentina (Nuevo Gulf and San Jorge Gulf). The biochemical composition of gonads was used to assess nutrient allocation by measuring ash, soluble protein, lipid and trichloroacetic aci...
Chapter
Full-text available
Los equinodermos (ekhinos, erizo; derma, piel) comprenden un grupo exitoso de organismos ex-clusivamente marinos conocidos vulgarmente como estrellas de mar, ofiuras, erizos de mar, pe-pinos de mar y lirios de mar. Estos presentan, en su gran mayoría, hábitos bentónicos y se distribu-yen desde ambientes intermareales hasta fondos profundos y en dif...
Article
Full-text available
The reproductive cycle of Arbacia dufresnii was studied in two contrasting populations on the east coast of Patagonia (Nuevo Gulf and San Jorge Gulf) from January 2008 to August 2010. Sea urchins from San Jorge Gulf had larger test diameter and heavier gonads than sea urchins from Nuevo Gulf. Arbacia dufresnii showed an annual cycle in both populat...
Chapter
Full-text available
We investigated the current patterns of diversity by country and by class of echinoderms, and analyzed their biogeographical, depth, and habitat or substratum affinities, using the database of the appendix of this book. Traditionally, the area has been divided into five biogeographical Regions and nine Provinces that cover a wide climate range. Cur...
Chapter
Full-text available
This chapter reviews the research on echinoderms that occur in the waters of Argentina. One hundred and thirty-four echinoderm species have been recorded. Two species of Crinoidea, 58 Asteroidea, 32 Ophiuroidea, 16 Echinoidea, and 26 species of Holothuroidea. The variety of marine environments and the main oceanographic processes in the region are...
Data
Geographical implications of seasonal reproduction in the bat star Asterina stellifera, Journal of Sea Research (2013), doi: 10.1016/j.seares.2013.05.006 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will underg...
Article
Full-text available
Allostichaster capensis is a fissiparous sea star that displays an annual sexual and asexual reproductive cycle. After fission, individuals spend the rest of the year regenerating the missing arms. To analyze feeding rates, we conducted three experiments with sea stars in different states of regeneration: recently split, regenerating and arms with...
Article
Full-text available
The different stages of embryonic development of the porcellanid crab Pachycheles chubutensis are described, along with the chronology of each stage at 16±1°C. Five different developmental stages (I–V) were recognized including: (i) early cells and 100% of the vitellum; (ii) formation of the embryonic primordium at the animal pole of the egg; (iii)...
Article
Full-text available
seasonal changes in biochemical composition of body compartments are presented for a population of the fissiparous starfish Allostichaster capensis in Bahia Kaiser, Golfo Nuevo, Chubut, Argentina, from June 2000 to May 2002. In Bahia Kaiser, the population displays an annual cycles in both sexual and asexual reproduction. The population undergoes f...
Article
Full-text available
The starfish Cosmasterias lurida was sampled from the pier piles of Almirante Storni in the Golfo Nuevo, northern Patagonia, from November 2001 to November 2003. In this anthropogenically modified site there is an unusually abundant food supply of mussels and large aggregations of starfishes. The reproductive cycle was studied by organ indices and...
Article
Full-text available
Timing of fission in the fissiparous starfish Allostichaster capensis under laboratory conditions is described. A. capensis generally splits across the disc along the fission plane during the spring, and then each half regenerates the missing arms during the rest of the year. The fission process can last eight hours. The healing process starts imme...
Article
Full-text available
Sexual and asexual reproduction of the fissiparous starfish Allostichaster capensis were examined for 24months at Baha Kaiser, Golfo Nuevo, Chubut, Argentina. Gonad indices revealed an annual reproductive cycle, with peak development occurring in late winter (August). Spawning occurred in spring (September). Pyloric caeca indices displayed a clear...

Network

Cited By

Projects

Projects (2)
Project
The aim of the project is to carry out research towards the development of an aquaculture system for the sea urchin Arbacia dufresnii.