scholarly journals Stimulus dependent learning and memory in the neotropical ant Ectatomma ruidum

2021 ◽  
Author(s):  
Andre J. Riveros ◽  
Brian V. Entler ◽  
Marc A. Seid
Keyword(s):  
Learning And Memory ◽  
Visual Information ◽  
Life Histories ◽  
Visual Stimuli ◽  
Mechanical Stimuli ◽  
Resource Exploitation ◽  
Tactile Information ◽  
Ectatomma Ruidum ◽  
History Of ◽  
Dependent Learning

Learning and memory are major cognitive processes strongly tied to the life histories of animals. In ants, chemo tactile information generally plays a central role in social interaction, navigation and resource exploitation. However, in hunters, visual information should take special relevance during foraging, thus leading to differential use of information from different sensory modalities. Here, we aimed to test whether a hunter, the neotropical ant Ectatomma ruidum differentially learns stimuli acquired through multiple sensory channels. We evaluated the performance of workers of the ant E. ruidum when trained using olfactory, mechanical, chemo tactile and visual stimuli under a restrained protocol of appetitive learning. Using the conditioning of the maxilla labium extension response enabled control of the stimuli provided. Our results show that ants learn faster and remember longer when trained using chemo tactile or visual stimuli, than when trained using olfactory and mechanical stimuli separately. These results agree with the life history of E. ruidum, characterized by high relevance of chemo tactile information acquired through antennation as well as the role of vision during hunting.

scholarly journals Clock/Sleep-Dependent Learning and Memory in Male 3xTg-AD Mice at Advanced Disease Stages and Extrinsic Effects of Huprine X and the Novel Multitarget Agent AVCRI104P3

2021 ◽  
Vol 11 (4) ◽  
pp. 426
Author(s):  
Lydia Giménez-Llort ◽  
Mikel Santana-Santana ◽  
Míriam Ratia ◽  
Belén Pérez ◽  
Pelayo Camps ◽  
...  
Keyword(s):  
Learning And Memory ◽  
Advanced Disease ◽  
Active Phase ◽  
Task Demands ◽  
The Novel ◽  
Training Time ◽  
Drug Effectiveness ◽  
Dependent Learning ◽  
Disease Stages

A new hypothesis highlights sleep-dependent learning/memory consolidation and regards the sleep-wake cycle as a modulator of β-amyloid and tau Alzheimer’s disease (AD) pathologies. Sundowning behavior is a common neuropsychiatric symptom (NPS) associated with dementia. Sleep fragmentation resulting from disturbances in sleep and circadian rhythms in AD may have important consequences on memory processes and exacerbate the other AD-NPS. The present work studied the effect of training time schedules on 12-month-old male 3xTg-AD mice modeling advanced disease stages. Their performance in two paradigms of the Morris water maze for spatial-reference and visual-perceptual learning and memory were found impaired at midday, after 4 h of non-active phase. In contrast, early-morning trained littermates, slowing down from their active phase, exhibited better performance and used goal-directed strategies and non-search navigation described for normal aging. The novel multitarget anticholinesterasic compound AVCRI104P3 (0.6 µmol·kg−1, 21 days i.p.) exerted stronger cognitive benefits than its in vitro equipotent dose of AChEI huprine X (0.12 μmol·kg−1, 21 days i.p.). Both compounds showed streamlined drug effectiveness, independently of the schedule. Their effects on anxiety-like behaviors were moderate. The results open a question of how time schedules modulate the capacity to respond to task demands and to assess/elucidate new drug effectiveness.

A comparative study of the life histories of Nematodirus battus and N. filicollis, nematode parasites of sheep

Parasitology ◽  
1959 ◽  
Vol 49 (3-4) ◽  
pp. 374-386 ◽  
Author(s):  
R. J. Thomas
Keyword(s):  
Life History ◽  
Intestinal Mucosa ◽  
Related Species ◽  
Life Histories ◽  
Basic Pattern ◽  
Culture Methods ◽  
Closely Related Species ◽  
Nematode Parasites ◽  
History Of ◽  
Comparative Description

1. The life history of N. battus is described, and a comparative description of the life history of N. filicollis is given.2. The life histories of these two species are compared with those of N. spathiger and N. helvetianus, two closely related species, and are shown to follow the same basic pattern, with minor variations in timing which appear to be specific in nature, and not related to differences in culture methods or host species.3. The pathogenesis of Nematodirus species is discussed and related to the migration of larvae into the intestinal mucosa during development.

III.—The Life-history and Cytology of Didymium nigripes Fr.

1932 ◽  
Vol 57 (1) ◽  
pp. 93-142 ◽  
Author(s):  
Elsie J. Cadman
Keyword(s):  
Life History ◽  
Life Histories ◽  
Important Research ◽  
Great Work ◽  
Animal Kingdom ◽  
History Of ◽  
Natural Groups

Since 1860, in which year De Bary published his great work Die Mycetozoen, the investigation of the life-history of members of the Mycetozoa has aroused a considerable amount of interest, and a great deal of important research has been carried out in this connection. The group of organisms is particularly interesting, because it lies on the borderline between plant and animal kingdoms, and it is very possible that a detailed investigation of several species of the Mycetozoa might be of considerable assistance in elucidating certain obscure points in the life-histories of higher members of both the great natural groups. The term “Mycetozoa,” which we owe to De Bary, will be used throughout in preference to the older term “Myxogastres” invented by Fries (32, p. 2), and that of “Myxomycetes” first employed by Link (32, p. 2). “Mycetozoon,” or “fungus-like animal,” is a very appropriate description of a member of the group, since during part of its life-history it exhibits distinctly animal-like characters, and the individuals move rapidly by means of flagella, whilst later, during the development of the sporangium, a plant-like form is assumed. The combination of plant and animal characters has given rise to much discussion as to the position of the Mycetozoa in plant or animal kingdom, and the group has been claimed by both zoologists and botanists.

A Cultural History of Education in the Modern Age

2020 ◽  
Keyword(s):  
Cultural History ◽  
Life Histories ◽  
History Of Education ◽  
Political Transformation ◽  
Modern Age ◽  
History Of ◽  
Children And Childhood ◽  
Essential Resource ◽  
Literature Culture ◽  
The Many

The twentieth century brought profound and far-reaching changes to education systems globally in response to significant social, economic, and political transformation. This volume draws together work from leading historians of education to present a tapestry of seminal and enduring themes that characterize the many educational developments since 1920. An essential resource for researchers, scholars, and students in history, literature, culture, and education, A Cultural History of Education in the Modern Age presents essays that examine the following key themes of the period: church, religion and morality; knowledge, media and communications; children and childhood; family, community and sociability; learners and learning; teachers and teaching; literacies; and life histories.

scholarly journals The application of life history information to the conservation management of Chrysoritis butterflies (Lepidoptera: Lycaenidae) in South Africa

Koedoe ◽  
2004 ◽  
Vol 47 (1) ◽  
Author(s):  
R.F. Terblanche ◽  
H. Van Hamburg
Keyword(s):  
South Africa ◽  
Life History ◽  
Life Histories ◽  
Host Plants ◽  
Conservation Management ◽  
Aesthetic Value ◽  
Wing Patterns ◽  
In The Wild ◽  
History Of ◽  
Voucher Specimens

Due to their intricate life histories and the unique wing patterns and colouring the butterflies of the genus Chrysoritis are of significant conservation and aesthetic value. Thisoverview probes into practical examples of butterfly life history research applicable to environmental management of this relatively well-known invertebrate group in South Africa. Despite the pioneer work on life histories of Chrysoritis in the past, more should be done to understand the life history of the butterflies in the wild, especially their natural host plants and the behaviour of adults and larvae. A system of voucher specimens of host plants should be introduced in South Africa. Although various host plant species in nature are used by the members of Chrysoritis, including the Chrysoritis chrysaor group, the choice of these in nature by each species is significant for conservation management and in the case of Chrysoritis aureus perhaps even as a specific characteristic.A revision of the ant genus Crematogaster will benefit the conservation management of Chrysoritis species since some of these ant species may consist of a number of specieswith much more restricted distributions than previously thought. Rigorous quantified tudies of population dynamics of Chrysoritis butterflies are absent and the introductionof such studies will benefit conservation management of these localised butterflies extensively.

Syphilitic General Paralysis

1893 ◽  
Vol 39 (165) ◽  
pp. 217-224
Author(s):  
M. J. Nolan
Keyword(s):  
Life Histories ◽  
The Other ◽  
Fin De Siecle ◽  
Short Life ◽  
General Paralysis ◽  
Generic Term ◽  
Fin De Siècle ◽  
History Of ◽  
Vexed Question

At the present time, when our fin de siècle knowledge of “general paralysis” enables us to recognize under that generic term many types of the disorder, and when the relation between it and syphilis continues a rather vexed question, little apology is needed for introducing to notice the following cases. They illustrate unmistakably some of the instances in which syphilis is solely responsible for what. Is termed by Dr. Savage” A process of degeneration which ultimately produces the ruin we recognize as general paralysis.”∗ Whatever may be hereafter formulated from the present evolutionary crisis in the history of the disorder there can be but little doubt that syphilis will be one of its most intimate and important relations. The story of its methods is briefly sketched in the following two short life-histories—in one asserting itself in the offspring of its victims by right of impure heredity, in the other carrying death direct into the vital centres by the force of its malignant virus.

Evolution and environment in the late Silurian-early Devonian: the rise of the pteridophytes

1985 ◽  
Vol 309 (1138) ◽  
pp. 147-165 ◽  
Keyword(s):  
Vascular Plants ◽  
Preliminary Report ◽  
Life Histories ◽  
Early History ◽  
Flora Of Australia ◽  
Early Devonian ◽  
The World ◽  
History Of

A brief review of the major advances since 1979 in Silurian and Devonian palaeobotany is followed by a preliminary report on a Gedinnian assemblage from the Welsh Borderland. This is dominated by rhyniopsids and includes several species of Cooksonia and Salopella . Spores have been isolated from a number of taxa. The assemblage is used to illustrate the problems of recognition and classification of early vascular plants. Parallel sedimentological and palaeogeographical studies permit speculation on the ecology and life histories of the plants that colonized the Old Red Continent. It is concluded that the lack of well preserved and independently dated assemblages from elsewhere in the world (an exception being the Baragwanathia flora of Australia) prevents the detection of any provincialism in the late Silurian and early Devonian and makes generalizations on the early history of vascular plants premature.

scholarly journals Kv4.2 knockout mice have hippocampal-dependent learning and memory deficits

2012 ◽  
Vol 19 (5) ◽  
pp. 182-189 ◽  
Author(s):  
J. N. Lugo ◽  
A. L. Brewster ◽  
C. M. Spencer ◽  
A. E. Anderson
Keyword(s):  
Learning And Memory ◽  
Knockout Mice ◽  
Memory Deficits ◽  
Learning And Memory Deficits ◽  
Dependent Learning

scholarly journals The brain-tumor related protein podoplanin regulates synaptic plasticity and hippocampus-dependent learning and memory

2016 ◽  
Vol 48 (8) ◽  
pp. 652-668 ◽  
Author(s):  
Ana Cicvaric ◽  
Jiaye Yang ◽  
Sigurd Krieger ◽  
Deeba Khan ◽  
Eun-Jung Kim ◽  
...  
Keyword(s):  
Brain Tumor ◽  
Synaptic Plasticity ◽  
Learning And Memory ◽  
Related Protein ◽  
Dependent Learning ◽  
The Brain
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