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PEMANFAATAN Drosophila melanogaster SEBAGAI organism MODEL UNTUK MEMPELAJARI PENGARUH FAKTOR LINGKUNGAN TERHADAP EKSPRESI SIFAT MAKHLUK HIDUP PADA PERKULIAHAN GENETIKA
The interaction between genetic and environmental factors in determining the characters of living organism is one of the main concepts in biology nowadays, and it becomes one of the main topic that students learn in genetics lecture. However, the observation result showed that regulation of gene exp...
Sources of seasonal variability in mesozooplankton aspartate transcarbamylase activity in coastal waters off Plymouth, UK
Some investigators have proposed aspartate transcarbamylase (ATCase) activity as an overall index of mesozooplankton productivity. However, seasonal changes in mesozooplankton species composition have never been investigated as a possible source of variation in ATCase activity. In this study, we inv...
Postmating-prezygotic isolation between two allopatric populations of Drosophila montana: fertilisation success differs under sperm competition
Postmating but prezygotic (PMPZ) interactions are increasingly recognized as a potentially important early-stage barrier in the evolution of reproductive isolation. A recent study described a potential example between populations of the same species: single matings between Drosophila montana populat...
The bird population. Quantitative study test
International audience The avifauna of the Lamto area has been studied during a two year period. 263 species have been recorded and the habitat prefe rences, diet, breeding periodicity and fecundity of the major species studied. 43 % of the birds are forest species. Only very few of them are abundan...
Biology of reproduction of a species threatened on the island of La Réunion (Corymborkis corymbis: Orchidaceae): implications for its preservation
International audience The knowledge of the reproductive biology is an essential step in the building of conservation projects of endangered species . The protected Corymborkis corymbis in La Réunion island is only represented by few populations. lts fecundity in natural conditions is very low ( aro...
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High Wolbachia density correlates with cost of infection for insecticide resistant Culex pipiens mosquitoes.
International audience In the mosquito Culex pipiens, insecticide resistance genes alter many life-history traits and incur a fitness cost. Resistance to organophosphate insecticides involves two loci, with each locus coding for a different mechanism of resistance (degradation vs. insensitivity to i...
Inbreeding load, bet hedging, and the evolution of sex-biased dispersal
Inbreeding load affects not only the average fecundity of philopatric individuals but also its variance. From bet-hedging theory, this should add further dispersal pressures to those stemming from the mere avoidance of inbreeding. Pressures on both sexes are identical under monogamy or promiscuity....
Demographic ageing and family. Approximations from Holguín
Resumen El envejecimiento de la estructura por edades de la población es el resultado de la combinación de una baja fecundidad, mortalidad y las migraciones. Este comportamiento demográfico impacta en diferentes sectores de la vida social y de manera más particular en la familia, donde en la mayoría...
The fecundity of vitorian realism: defence of the rights of man, peoples, international community
Life history of Karualona muelleri (Richard, 1897) (Chydoridae, Aloninae)
Many taxonomic issues still need to be solved for the family Chydoridae, but mainly in the subfamily Aloninae. The species Karualona muelleri is an example of a recent taxonomic redefinition, since it was decoupled from the genus Alona and translocated to another genus. In order to expand our knowle...
Sea cucumbers, Holothuria arguinensis and H. mammata , from the southern Iberian Peninsula: Variation in reproductive activity between populations from different habitats
International audience New fisheries in the western Mediterranean and north eastern Atlantic target the sea cucumbers Holothuria arguinensis and H. mammata; however, lack of biological information hinders management decisions. Here, the reproductive biology of populations the two species was investi...
Male homosexual preference and evolution
Male homosexual preference (MHP) is considered as a Darwinian paradox, as it is partially heritable, induces a reproductive cost, has a prevalence estimated (in western countries) between 2 and 6%, and seems to be specific to humans (excluding domesticated species). Kin selection or sexually antagon...
Effect of Melia azadirchta Fruit extract on the eggs, embryo and Juveniles of the fresh water snail Physa acuta ( Draparnaud) , at different experimental tern per a tures.
(Gastrula, Trochophore& hatching) as the incubation temperature increased and it was very The influence of the alcoholic extract of Melia azadirchta fruit of different concentrations at different experimental temperatures on the fecundity, embryonic development and hatching of Physa. acuta were inve...
Bonga shad ( Ethmalosa fimbriata ) spawning tactics in an upwelling environment
Successful recruitment in small pelagic fish populations inhabiting upwelling zones is subject to variation in fecundity and is driven by spatial and temporal fluctuations in environmental conditions, that is, mainly sea surface temperature, salinity and food availability. These fluctuations in abio...
The Fictional Imaginations of the Terror (1793-1874) From Isabelle de Charrière to Victor Hugo
From Isabelle de Charrière's lettres trouvées dans des portefeuilles d'émigrés ( 1793) to Victor Hugo's Quatrevingttreize(1874), which reinterprets the period in the mirror of the Commune, the Terror fed the imagination of manynovelists. Unprecedented surge of violence or unheard of democratic momen...
The anti-fecundity effect of 5-azacytidine (5-AzaC) on Schistosoma mansoni is linked to dis-regulated transcription, translation and stem cell activities
Uncontrolled host immunological reactions directed against tissue-trapped eggs precipitate a potentially lethal, pathological cascade responsible for schistosomiasis. Blocking schistosome egg production, therefore, presents a strategy for simultaneously reducing immunopathology as well as limiting d...
The use of spatial diffusion models of innovations in the geographical study of fecundity.
Effect of crop plants on fitness costs associated with resistance to Bacillus thuringiensis toxins Cry1Ac and Cry2Ab in cabbage loopers
Fitness costs associated with resistance to Bacillus thuringiensis (Bt) toxins critically impact the development of resistance in insect populations. In this study, the fitness costs in Trichoplusia ni strains associated with two genetically independent resistance mechanisms to Bt toxins Cry1Ac and...
Asian elephant (Elephas maximus) conservation through the study of interactions between human, captive and wild elephant populations : an integrated approach
For thousands of years, the Asian elephant has played an important role in the culture, economy and construction of Asian nations. Almost a quarter of the population of this emblematic and threatened species consists of so-called captive elephants. However, both national legislation and conservation...
The recent invasion of Rutilus rutilus (L.) (Pisces: Cyprinidae) in a large South- Alpine lake: Lago Maggiore
Very recently, a common cyprinid fish species at northern latitude, the roach (Rutilus rutilus L.) has been observed in the large south-alpine Lago Maggiore for the first time. The colonization of the lake has the characteristics of an invasion. In order to investigate this new fish population, bent...
Sense, reference, conceptual script : studies on Frege
Our doctoral thesis addresses the following question : what is the theme of the fregean conceptual script? We answer it in questioning the model-theoretical framework currently used. Our method consists in a close study of the fregean texts, especially the Grundgesetze, and in a comparative approach...
MetaPopGen 2.0: A multilocus genetic simulator to model populations of large size
Multi‐locus genetic processes in subdivided populations can be complex and difficult to interpret using theoretical population genetics models. Genetic simulators offer a valid alternative to study multi‐locus genetic processes in arbitrarily complex scenarios. However, the use of forward‐in‐time si...
The feminine in Irish pre-Christian landscapes
This study deals with the peoples who settled in Ireland before the coming of Chris-tianity (around the 5th century C.E.), and more precisely with both the builders of pas-sage tombs dating from the Neolithic period and the Celts. The analysis revolves around the omnipresence of a symbolical feminin...
National Fertility Survey, 1965
The 1965 National Fertility Survey was the first of three surveys that succeeded the Growth of American Families surveys (1955 and 1960) aimed at examining marital fertility and family planning in the United States. Currently married women were queried on the following main topics: residence history...
Bisphenol A determination in baby bottles by chemiluminescent enzyme-linked immunosorbent assay, lateral flow immunoassay and liquid chromatography tandem mass spectrometry