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Population dynamics and habitat sharing of natural populations of Caenorhabditis elegans and C. briggsae

, : Population dynamics and habitat sharing of natural populations of Caenorhabditis elegans and C. briggsae. Bmc Biology 10: 59-59

The nematode Caenorhabditis elegans is a major model organism in laboratory biology. Very little is known, however, about its ecology, including where it proliferates. In the past, C. elegans was mainly isolated from human-made compost heaps, where it was overwhelmingly found in the non-feeding dauer diapause stage. C. elegans and C. briggsae were found in large, proliferating populations in rotting plant material (fruits and stems), in several locations in mainland France. Both species were found to co-occur in samples isolated from a given plant species. Population counts spanned a range from 1 to over 1, Caenorhabditis individuals on a single fruit or stem. Some populations with an intermediate census size (1-1) contained no dauer larvae at all, whereas larger populations always included some larvae in the pre-dauer or dauer stages. We report on associated micro-organisms, including pathogens. We systematically sampled a spatio-temporally structured set of rotting apples in an apple orchard in Orsay over four years. C. elegans and C. briggsae were abundantly found every year, but their temporal distributions did not coincide. C. briggsae was found alone in summer, whereas both species co-occurred in early fall and C. elegans was found alone in late fall. Competition experiments in the laboratory at different temperatures show that C. briggsae outcompetes C. elegans at high temperatures, whereas C. elegans outcompetes C. briggsae at lower temperatures. C. elegans and C. briggsae proliferate in the same rotting vegetal substrates. In contrast to previous surveys of populations in compost heaps, we found fully proliferating populations with no dauer larvae. The temporal sharing of the habitat by the two species coincides with their temperature preference in the laboratory, with C. briggsae populations growing faster than C. elegans at higher temperatures, and conversely at lower temperatures.


PMID: 22731941

DOI: 10.1186/1741-7007-10-59

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Rocinholi, L.F.; Landeira-Fernandez, J., 2011: Anxiety-like behavior in weanling and young adult male and female malnourished rats. The present study determined whether protein-calorie malnutrition alters anxiety-like behavior in weanling and young adult, male and female malnourished rats. On the day of birth, litters of Wistar rats were divided into Control (C) and Malnutriti...

John, C.C.; Niermann, M.; Sharon, B.; Peterson, M.L.; Kranz, D.M.; Schlievert, P.M., 2010: Staphylococcal toxic shock syndrome erythroderma is associated with superantigenicity and hypersensitivity. Staphylococcal toxic shock syndrome (TSS) has rarely been reported without rash and desquamation. This study describes a patient who met all criteria for TSS except erythroderma and desquamation. The associated staphylococcal superantigen was ente...

Jolley R.L., 1990: Waste management trends interfacing engineering with chemical physical and biological sciences. Abstracts of Papers American Chemical Society 200(1-2): ENVR 6

Hu, X.Z.ang, Z.B.o, Y.L.u, W.G.n, Q.A., L., 2002: Production of a functional single-chain Fv protein in transgenic tobacco root exudates. Nicotiana tabacum was transformed with a gene encoding anti-PreS1 of hepatitis B surface antigen single-chain Fv antibody (scFv) and bearing an N-terminal endoplasmic reticulum protein signal peptide sequence. The scFv antibody protein was continu...

Charkviani L.I., 1973: Reduction of morbidity and mortality from cervical cancer. Voprosy Onkologii (St Petersburg) 19(1): 95-101

Peek, S.F.; Apple, F.S.; Murakami, M.Ann.; Crump, P.M.; Semrad, S.D., 2008: Cardiac isoenzymes in healthy Holstein calves and calves with experimentally induced endotoxemia. This paper describes a controlled study designed to establish normal values for cardiac troponins I and T (cTnI and cTnT) and CK-MB mass in healthy newborn Holstein calves, and to compare values for cTnI, cTnT, CK-MB and total creatine kinase (CK)...

Bourrel, P.; Huet, R.; Gourillon, H.; Fillaudeau, G.; Malchair, G.; Chatelan, J.P., 1968: Old traumatic dislocations in the overseas territories. Apropos of 25 cases: shoulder, elbow, metacarpo-phalangeal, hip. Medecine Tropicale 28(4): Suppl:1-21

Satomi, H., 1981: Tests for the control of Melanotus tamsuyensis Bates (Coleoptera, Elateridae) in the adult stage on sugarcane. Proceedings of the Association for Plant Protection of Kyushu 27: 129-131

Hill A., 1980: Hyena crocuta crocuta provisioning of juvenile offspring at the den. Mammalia 44(4): 594-595

M.V.Kalashnik, L.Kh. Ingel, 2013: On several mechanisms of the formation of the compensated thermohaline inhomogeneities in the ocean. The process of the geostrophic adjustment in the stably stratified two-component medium is studied in the framework of a linear approximation. We demonstrate that, at the final stage of that process, a stationary trace is generated by the distribu...