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Dora Isabel Quirós

Bio: Dora Isabel Quirós is an academic researcher from University of Panama. The author has contributed to research in topics: Panama & Zoology. The author has an hindex of 2, co-authored 6 publications receiving 7 citations.
Topics: Panama, Zoology, Geography, Aphid, Anacardium excelsum

Papers
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Journal ArticleDOI
TL;DR: Assays of extracts composed of low molecular weight metabolites from 28 species of plants from 15 families from Panamanian forest showed variation in toxicity to A. craccivora, hence, the activity probably was due to the toxic proteins, rather than contaminating toxic metabolites.
Abstract: Although aphids remain serious pests, bioassay-guided purification of anti-aphid compounds depends upon assays that are laborious and often have incomplete descriptions of methods. We provide the protocol for a rapid, efficient assay using a 96-well microtiter plate format for testing extracts for activity against the cotton aphid, Aphis gossypii Glover (Sternorrhyncha: Aphididae), and the black bean aphid, Aphis craccivora Koch. Assays of extracts composed of low molecular weight metabolites from 28 species of plants from 15 families from Panamanian forest showed variation in toxicity to A. craccivora. Three metabolite extracts and one protein extract were active, with more than 70% mortality in 72 h, averaged over three independent experiments. For three species of plants with protein extracts having intermediate activity, the metabolite extracts were inactive; hence, the activity probably was due to the toxic proteins, rather than contaminating toxic metabolites.

4 citations

Journal ArticleDOI
30 Apr 2020
TL;DR: A. oblongus is a new record for Panama and was collected in the town of Pirre, Province of Darien, and the pseudoscorpion was found attached to the coxa of the right hind leg of the fly.
Abstract: Some species of pseudoscorpions perform a mechanism known as phoresy, attach themselves to other organisms for transportation. In this work, Americhernes oblongus (Pseudoscorpiones: Chernetidae) is reported as a phoront on a species of fly belonging to the genus Scipopus (Diptera: Micropezidae). A. oblongus is a new record for Panama and was collected in the town of Pirre, Province of Darien. The pseudoscorpion was found attached to the coxa of the right hind leg of the fly. To our knowledge, there are no previous reports of phoresy between A. oblongus and Scipopus sp. as a dispersal method.

2 citations

Journal ArticleDOI
TL;DR: The species Plectris fassli Moser and Pseudothyridium solisi Soula are recorded for the first time for Panama and the distribution map of the new reports is presented.
Abstract: The species Plectris fassli Moser (Melolonthinae: Macrodactylini) and Pseudothyridium solisi Soula (Rutelinae: Rutelini: Anticheirina) are recorded for the first time for Panama. Photographs of adults and male genitalia, as well as the distribution map of the new reports are presented.
Journal ArticleDOI
TL;DR: Among the main causes of damage to fruits, and seeds, Coleoptera of the Curculionidae and Bruchidae families and other groups of beetles stand out.
Abstract: Fruit and seed predators determine plant populations dynamics and community structure of tropical forests. Its impact can have drastic consequences on the development of plants and their ability to reproduce. Among the main causes of damage to fruits, and seeds, Coleoptera of the Curculionidae and Bruchidae families and other groups of beetles stand out. The research was carried out in the Metropolitan Natural Park (PNM), considered as the "lung of the City of Panama" which has deciduous trees that reach up to 36 m in height and an average annual temperature of 28° C. The work consisted of collecting samples of fruits and seeds of all plant species encountered in the fruiting condition in the park from August 2015 to July 2016. Additionally, flower buds of Anacardium excelsum L. attacked by two species of Anthonomus Germar, 1817 were also included in the analyses. A total of 797 beetles were collected from 3091 samples (seeds, fruits, flower buds) reared at environmental conditions. The Curculionidae and Bruchidae families presented the highest abundance of individuals and species richness. One species of Hypothenemus Westwood, 1836 (Scolytinae), was the most abundant within the Curculionidae family and in the Bruchidae family one species of Acanthoscelides Schilsky, 1905. Tree species such as Oenocarpus mapora H. Karst. 1857 and Guazuma ulmifolia Lam presented higher predation of their fruits or seeds. On average only 5% of dissected seeds were predated across 32 host plant species. In total, 31 genera of beetles were reared from flower buds, seeds, and fruits of 17 plant species. Host-specificity was moderated, with 47% of flower bud, fruit and seed predator genera associated with just one plant species. Sixty one percent of the coleopterans were collected in the dry season (December to March).

Cited by
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Ismail Serageldin1
01 Jan 2016
TL;DR: In this article, public investment will be needed, and new and imaginative public-private collaboration can make the gene revolution beneficial to developing countries, which is crucial for the well being of today's hungry people and future generations.
Abstract: Biotechnology can contribute to future food security if it benefits sustainable small-farm agriculture in developing countries. Presently, agrobiotechnology research cites ethical, safety, and intellectual property rights issues. Protection of intellectual property rights encourages private sector investment in agrobiotechnology, but in developing countries the needs of smallholder farmers and environmental conservation are unlikely to attract private funds. Public investment will be needed, and new and imaginative public-private collaboration can make the gene revolution beneficial to developing countries. This is crucial for the well-being of today's hungry people and future generations.

16 citations

Journal ArticleDOI
TL;DR: The results indicate that the insecticidal activity of ConA on R. padi may involve effects on death of the gut epithelial cells and effects on feeding behavior, which can be employed to create plants that are resistant to aphids.
Abstract: The toxicity effect of Concanavalin A ( Canavalia ensiformis lectin, ConA) to bird cherry-oat aphid, Rhopalosiphum padi L. (Hemiptera: Aphididae), was investigated in the laboratory by using artificial diets containing ConA concentrations. Bird cherry-oat aphid performance was affected by the presence of Con A in artificial diets. The lectin added into the liquid diet increased the prereproductive period, mortality, and the average time of generation development ( T ) and decreased fecundity and the intrinsic rate of natural increase ( r m). In attempt to unravel the mode of action of ConA, the interaction of the lectin with insect gut and the effect of ConA on feeding behavior were investigated. Extract of gut of treated grain aphid demonstrated DNA fragmentation, and this was accompanied with an increase in caspase 3 activity. Moreover, addition of ConA to the sucrose–agarose gels reduced salivation and passive ingestion of fluids from the gel. The results indicate that the insecticidal activity of ConA on R. padi may involve effects on death of the gut epithelial cells and effects on feeding behavior. This can be employed to create plants that are resistant to aphids.

10 citations

Book ChapterDOI
01 Jan 2021
TL;DR: Pseudo-corpions constitute an intriguing group of cryptic arachnids, occurring in almost all regions of the world, and belong to the third most diversified order as mentioned in this paper.
Abstract: Pseudoscorpions comprise an intriguing group of cryptic arachnids, occurring in almost all regions of the world, and belong to the third most diversified order. These small arachnids (0.5–10.0 mm) live under the rocks, beneath leaf litter, and in tree trunks, and some species hide in bird nests or in ant and bee colonies. The biology and behavior of pseudoscorpions show numerous peculiar features, testifying the peculiar evolutionary history of this group. Pseudoscorpion represents an important component of arthropod communities and food webs, feeding on small arthropods and serving as feeding resources for other invertebrates and small vertebrates. In order to encourage new studies on pseudoscorpions and broaden the understanding of pseudoscorpion fauna and its importance in different regions of the world, this chapter aimed to summarize the main sampling and collection methods that are applied to pseudoscorpion inventories for diversity studies and behavioral researches. Furthermore, the chapter aimed to evaluate the trends of scientific articles published on pseudoscorpions. Additionally, an identification key for pseudoscorpion families is also included herein. We believe this chapter could motivate new studies on pseudoscorpions by deepening the understanding of the taxonomic and ecological importance of this group.

4 citations

Journal ArticleDOI
TL;DR: This study is a review of the Condamineeae tribe through the acquisition of data from phytochemical studies and evaluation of genera activities that constitute the tribe in order to contribute to chemotaxonomic classification of this tribe in the Rubiaceae family.
Abstract: This study is a review of the Condamineeae tribe, through the acquisition of data from phytochemical studies and evaluation of genera activities that constitute the tribe, in order to contribute to chemotaxonomic classification of this tribe in the Rubiaceae family. This review also states the scarcity of phytochemical investigations of several genera and consequently a lot of species of family.

4 citations

Journal ArticleDOI
30 Apr 2020
TL;DR: A. oblongus is a new record for Panama and was collected in the town of Pirre, Province of Darien, and the pseudoscorpion was found attached to the coxa of the right hind leg of the fly.
Abstract: Some species of pseudoscorpions perform a mechanism known as phoresy, attach themselves to other organisms for transportation. In this work, Americhernes oblongus (Pseudoscorpiones: Chernetidae) is reported as a phoront on a species of fly belonging to the genus Scipopus (Diptera: Micropezidae). A. oblongus is a new record for Panama and was collected in the town of Pirre, Province of Darien. The pseudoscorpion was found attached to the coxa of the right hind leg of the fly. To our knowledge, there are no previous reports of phoresy between A. oblongus and Scipopus sp. as a dispersal method.

2 citations