keyword
MENU ▼
Read by QxMD icon Read
search

Cannibalism

keyword
https://www.readbyqxmd.com/read/28515331/cannibalism-by-damselflies-increases-with-rising-temperature
#1
Denon Start, Devin Kirk, Dylan Shea, Benjamin Gilbert
Trophic interactions are likely to change under climate warming. These interactions can be altered directly by changing consumption rates, or indirectly by altering growth rates and size asymmetries among individuals that in turn affect feeding. Understanding these processes is particularly important for intraspecific interactions, as direct and indirect changes may exacerbate antagonistic interactions. We examined the effect of temperature on activity rate, growth and intraspecific size asymmetries, and how these temperature dependencies affected cannibalism in Lestes congener, a damselfly with marked intraspecific variation in size...
May 2017: Biology Letters
https://www.readbyqxmd.com/read/28479694/emperipolesis-entosis-and-cell-cannibalism-demystifying-the-cloud
#2
REVIEW
Nidhi Gupta, Kiran Jadhav, Vandana Shah
There are intense published data in literature related to cell engulfment phenomena such as emperipolesis, entosis and cell cannibalism. All these are closely related phenomena with a very fine line of differences. Its correct identification has a significant diagnostic and prognostic value. After extensive literature search, a gap of knowledge was found in concept designing and clarity about understanding of aforementioned terminologies. The authors have attempted to review data of these closely knit terminologies and further organize its characteristic appearances, pathogenetic aspects and prognostic implications...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28407853/effects-of-environmental-enrichment-on-reproductive-performance-and-quantity-and-morphology-of-cumulus-oocyte-complexes-obtained-from-rattus-norvegicus
#3
Joana Fisch, Iáskara Vieira de Oliveira, Juliana Fank, Lia Mara Gomes Paim, Marília Remuzzi Zandoná, Eliana Franco Lopes, Fernanda Bastos de Mello, Alexandre Tavares Duarte de Oliveira
Several researchers have observed that environmental enrichment (EE) can be effective in reducing stressful conditions and abnormal behavior and may provide better reproductive performance in rodents. In this context, this study aimed to evaluate the reproductive performance of Wistar rats reared in three different housing conditions. Animals were separated into breeding pairs, one pair per cage and pairs randomly assigned to three experimental groups (ten couples per group): control group were provided cages without any environmental enrichment; PVC group with PVC pipe; and cardboard roll group with a commercially available cardboard tube...
May 2017: Theriogenology
https://www.readbyqxmd.com/read/28405376/a-test-of-male-infanticide-as-a-reproductive-tactic-in-a-cichlid-fish
#4
Shagun Jindal, Aneesh P H Bose, Constance M O'Connor, Sigal Balshine
Infanticide and offspring cannibalism are taxonomically widespread phenomena. In some group-living species, a new dominant individual taking over a group can benefit from infanticide if doing so induces potential mates to become reproductively available sooner. Despite widespread observations of infanticide (i.e. egg cannibalism) among fishes, no study has investigated whether egg cannibalism occurs in fishes as a result of group takeovers, or how this type of cannibalism might be adaptive. Using the cooperatively breeding cichlid, Neolamprologus pulcher, we tested whether new unrelated males entering the dominant position in a social group were more likely to cannibalize eggs, and whether such cannibalism would shorten the interval until the female's next spawning...
March 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28385628/application-of-stable-isotope-analysis-for-detecting-filial-cannibalism
#5
Atsushi Sogabe, Hideki Hamaoka, Atsushi Fukuta, Jun-Ya Shibata, Jun Shoji, Koji Omori
A novel type of filial cannibalism has been reported in pipefishes, in which the eggs are absorbed through the male's brood-pouch epithelium. The present study explored the applicability of stable isotope analysis for the detection of paternal brood cannibalism in the seaweed pipefish Syngnathus schlegeli. As expected, the δ(15)N values for liver, which conveys short-term dietary information about the recent reproductive season, were higher in males than in females. In contrast, the δ(15)N values for muscle, which reflects longer-term feeding habits that span both the reproductive and non-reproductive seasons, did not significantly differ between the sexes...
April 4, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28383521/assessing-the-calorific-significance-of-episodes-of-human-cannibalism-in-the-palaeolithic
#6
James Cole
Episodes of Palaeolithic cannibalism have frequently been defined as 'nutritional' in nature, but with little empirical evidence to assess their dietary significance. This paper presents a nutritional template that offers a proxy calorie value for the human body. When applied to the Palaeolithic record, the template provides a framework for assessing the dietary value of prehistoric cannibalistic episodes compared to the faunal record. Results show that humans have a comparable nutritional value to those faunal species that match our typical body weight, but significantly lower than a range of fauna often found in association with anthropogenically modified hominin remains...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28379558/orientation-of-navel-orangeworm-lepidoptera-pyralidae-larvae-and-adults-toward-volatiles-associated-with-almond-hull-split-and-aspergillus-flavus
#7
Daniel S Bush, Allen Lawrance, Joel P Siegel, May R Berenbaum
The navel orangeworm Amyelois transitella (Walker, 1863, Lepidoptera: Pyralidae), a pest of California tree nuts, is associated with the fungus Aspergillus flavus, and previous research suggests these species are facultative mutualists. Because navel orangeworm larvae exhibit improved performance on diets containing this fungus, orientation toward hostplants infected with A. flavus may be adaptive. We conducted behavioral assays to determine if larvae respond to chemical cues produced by almond hull split and fungal infection...
June 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28377008/of-mechanisms-for-reduced-excess-sludge-production-in-the-cannibal-process-m-a-labelle-p-l-dold-y-comeau-87-8-687-696-2015
#8
Coenraad F Pretorius
No abstract text is available yet for this article.
April 1, 2017: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28367821/-the-yin-and-the-yang-of-autophagy-in-cancer-cells
#9
Carine Joffre, Mojgan Djavaheri-Mergny, Sophie Pattingre, Sylvie Giuriato
Autophagy is a self-cannibalism process essential for tissue homeostasis, which can be activated following different environmental stressful conditions. In normal cells, autophagy could act as a brake to prevent tumorigenesis, but cancer cells are able to hijack this process to their own benefit, to promote tumor growth and/or tumor resistance to anti-cancer therapies. Scientists and clinicians attempt to modulate this process to improve therapies, using autophagy inhibitors or activators, some of them being tested currently in clinical trials against several types of tumors...
March 2017: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28349917/emperipolesis-an-unreported-novel-phenomenon-in-oral-squamous-cell-carcinoma
#10
Gargi S Sarode, Sachin C Sarode, Shankargouda Patil
Emperipolesis is a phenomenon characterized by engulfment of hematopoietic cells by megakaryocytes, monocytes, fibroblasts, and malignant cells within their cytoplasm. This phenomenon has been reported in various physiological and pathological conditions including malignancies. However, emperipolesis has never been reported in oral squamous cell carcinoma (OSCC) till date. We have analyzed histopathological slides of 56 cases of OSCC to see lymphocyte engulfment by tumor cells. Five cases showing features of this phenomenon were observed...
April 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28343229/cytological-findings-of-ascitic-fluid-with-a-malignant-ovarian-steroid-cell-tumor-a-case-report-and-literature-review
#11
Nobuaki Kosaka, Kiyoshi Hasegawa, Kaori Kiuchi, Shoko Ochiai, Tamiko Nagai, Hiromi Machida, Yasuo Imai, Ichio Fukasawa
BACKGROUND: Ovarian steroid cell tumors (SCTs) are rare and usually benign, although 25-43% are reportedly malignant. The cytologic findings of these rare ovarian tumors have almost never been reported. CASE: We report a rare case of a malignant ovarian SCT with peritoneal dissemination and malignant ascites in a 40-year-old woman. Her tumor was classified as stage IIB (pT2bNoM0) according to the FIGO (International Federation of Gynecology and Obstetrics) classification system, and she was treated with adjuvant chemotherapy following staging laparotomy...
2017: Acta Cytologica
https://www.readbyqxmd.com/read/28338659/intercellular-cannibalism-fuels-tumor-growth
#12
Ernesto Pérez, Andreas Bergmann
No abstract text is available yet for this article.
May 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28327257/determining-the-mechanism-for-low-sludge-yields-in-the-cannibal%C3%A2-solids-reduction-system
#13
Steven W Van Ginkel Joseph Miceli Bi-O Kim Ziming Yang Michelle Young Andrew Marcus And Bruce E Rittmann
Extracellular polymeric substances (EPS) and solids concentrations in samples from the Interchange Bioreactor (IBR) andreturn activated sludge (RAS) from Cannibal® plants having low and high sludge yields were analyzed to understand the mechanisms behind low sludge production. Low sludge yields correlated to more EPS degradation, higher concentrations of iron, and reducing conditions in the IBR. In the low-yield plants, iron was reduced when the RAS passed through the anaerobic and reducing conditions of the IBR, and this led to more EPS solubilization and degradation...
March 16, 2017: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28323034/co-targeting-of-egfr-and-autophagy-signaling-is-an-emerging-treatment-strategy-in-metastatic-colorectal-cancer
#14
Evangelos Koustas, Michalis V Karamouzis, Chrysovalantou Mihailidou, Dimitrios Schizas, Athanasios G Papavassiliou
The epidermal growth factor receptor (EGFR) and its associated pathway is a critical key regulator of CRC development and progression. The monoclonal antibodies (MoAbs) cetuximab and panitumumab, directed against EGFR, represent a major step forward in the treatment of metastatic colorectal cancer (mCRC), in terms of progression-free survival and overall survival in several clinical trials. However, the activity of anti-EGFR MoAbs appears to be limited to a subset of patients with mCRC. Studies have highlighted that acquired-resistance to anti-EGFR MoAbs biochemically converge into Ras/Raf/Mek/Erk and PI3K/Akt/mTOR pathways...
March 18, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28316398/a-note-on-the-haematophagous-nature-of-poultry-shaft-louse-menopon-gallinae-amblycera-phthiraptera
#15
Surendra Kumar, Aftab Ahmad, Rehmat Ali, Vijay Kumar
An analysis of the crop contents of the poultry shaft louse, Menopon gallina indicates that 67 % of adult males and 72 % of the adult females examined carried red content compatible to host blood, along with feather barbules. The percentage of nymphal instars carrying red content in the crop was quite low. On the basis of crop contents the louse does not seem to harbor any triturating agent and is also not involved in cannibalism or predation. SEM studies on the ventral side of head do not indicate the presence of any pointed structure which can be used to pierce the skin...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28295548/interaction-between-stress-induced-by-competition-predation-and-an-insecticide-on-the-response-of-aquatic-invertebrates
#16
Paul J Van den Brink, Sylvan L Klein, Andreu Rico
This study investigated effects of species interactions like competition and (intraguild) predation on the sensitivity of aquatic organisms to the insecticide chlorpyrifos. In the first experiment, combined effects of chlorpyrifos and different levels of intra- and inter-specific interaction were assessed on Gammarus pulex survival using Asellus aquaticus as an interacting species. Intra- and inter-specific interactions increased the time to extinction of G. pulex up to a factor of two, most likely due to the cannibalistic nature of G...
March 10, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28283740/two-parameter-bifurcations-in-lpa-model
#17
Veronika Hajnová, Lenka Přibylová
The structured population LPA model is studied. The model describes flour beetle (Tribolium) population dynamics of four stage populations: eggs, larvae, pupae and adults with cannibalism between these stages. We concentrate on the case of non-zero cannibalistic rates of adults on eggs and adults on pupae and no cannibalism of larvae on eggs, but the results can be numerically continued to non-zero cannibalism of larvae on eggs. In this article two-parameter bifurcations in LPA model are analysed. Various stable and unstable invariant sets are found, different types of hysteresis are presented and abrupt changes in dynamics are simulated to explain the complicated way the system behaves near two-parameter bifurcation manifolds...
March 10, 2017: Journal of Mathematical Biology
https://www.readbyqxmd.com/read/28280638/a-giant-cell-lesion-with-cellular-cannibalism-in-the-mandible-case-report-and-review-of-brown-tumors-in-hyperparathyroidism
#18
Lorenzo Azzi, Laura Cimetti, Matteo Annoni, Diego Anselmi, Lucia Tettamanti, Angelo Tagliabue
A small radiolucent area in the mandible was discovered in a 58-year-old woman with no oral complaints. The patient's history included only hypertension. The lesion was considered as an inflammatory cyst and was enucleated. Three months later, a CT revealed the presence of a cyst-like lesion in the mandible with thin expanded buccal cortical plate, localized erosion, and a polylobate appearance on the lingual aspect of the cortical plate. The histological diagnosis of the lesion was central giant-cell granuloma (CGCG)...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28272003/assessment-of-tumor-cell-cannibalism-as-a-predictor-of-oral-squamous-cell-carcinoma-a-histopathologic-correlation
#19
Megha Jain, Swati Saawarn, Anish Gupta, Sahana Ashok, Shubhangi Mhaske, Samark Khan, Manish Jain
AIM: Cellular cannibalism is defined as the ability of a cell to engulf another cell of its own type or any other. It has been recognized in various malignancies and is linked well with the aggressiveness, degree of anaplasia, invasiveness and metastatic potential. Literature search fetched up very few studies related to the presence and significance of cannibalism with respect to Oral squamous cell carcinoma [OSCC]. The present study was aimed to detect tumor cell cannibalism in OSCC and to validate its role as a prognosticator of OSCC in relation to metastasis and degree of differentiation...
January 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28262803/adopt-ignore-or-kill-male-poison-frogs-adjust-parental-decisions-according-to-their-territorial-status
#20
Eva Ringler, Kristina Barbara Beck, Steffen Weinlein, Ludwig Huber, Max Ringler
Systematic infanticide of unrelated young has been reported in several animal taxa. Particular attention has been given to carnivores and primates, where infanticide is a sexually selected strategy of males to gain increased access to female mating partners. Cannibals must ensure avoiding their own offspring and targeting only unrelated young. Therefore, decision rules are needed to mediate parental and cannibalistic behaviour. Here we show experimentally that male poison frogs adjust their parental responses - care or infanticide - towards unrelated clutches according to their territorial status...
March 6, 2017: Scientific Reports
keyword
keyword
19561
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"