Results 221 to 230 of about 140,355 (259)

A Maturation Size Threshold and Phenotypic Plasticity of Age and Size at Maturity in Daphnia magna

Oikos, 1994
The combined effects of body-length at birth and juvenile growth on clutch size, age and body-length at maturity were studied in two clones of Daphnia magna. Juvenile growth in 13 food treatments was estimated by the mean juvenile increment, calculated as the ratio of post-moult-length to pre-moult-length, averaged over all juvenile instars.
openaire   +1 more source

Body Size, Maturation Size, and Growth Rate of Crustaceans

2018
AbstractCrustaceans present a remarkable variety of forms that differ greatly in body size and growth strategies (determinate or indeterminate). This diversity reflects the long evolutionary history of this group and the variety of environments a crustacean may inhabit.
Brzeziński, Tomasz, Maszczyk, Piotr
openaire   +1 more source

Relationship between genome size and maturity group in soybean

Theoretical and Applied Genetics, 1994
Previous studies have reported a correlation between genome size and relative maturity among plant species. The objective of this study was to determine whether such a relationship exists in soybean. Twenty cultivars, representing maturity groups ranging from 000 to IX, were analyzed using flow cytometric procedures. A 15% difference in genome size was
A L Rayburn, C D Nickell, Rayburn A L
exaly   +3 more sources

Age and Size at Maturity

2001
Age and size at maturity have been an object of interest to humans since the domestication of animals and plants, for one of the objectives of domestication was to produce an organism that grew fast and matured early at a large size. Selection was also practiced to produce animals that could be used for such purposes as hunting and portaging, and to ...
openaire   +1 more source

Fitness and body size in mature odonates

Ecological Entomology, 2000
Summary The relationship between body size and fitness components in odonates was examined using a meta‐analysis of 33 published studies. There was a positive and significant overall effect of body size on mating rate and lifetime mating success among males. There was also a weaker but still significant positive effect of body size on
Natalia Sokolovska, Locke Rowe, Frank Johansson   +2 more
openaire   +1 more source

Age And Size At Maturity

1998
Abstract This chapter analyses the evolution of age and size at maturity. Maturation divides a life into preparation and fulfilment. Age at maturity is pivotal, for fitness is often more sensitive to changes in this trait than tq changes in any other. With maturation, selection pressures and trade¬ offs change dramatically.
openaire   +1 more source

Mature size and maturing rate in RoC57BL/6 and RoNMRI lines of mice

Journal of Animal Breeding and Genetics, 1996
SummaryIn mammals, between‐species correlation between mature size and maturing rate is high. The within‐species relationship is not so clear. An experiment with 167 mice of small RoC57BL/6 and large RoNMRI lines was set up, to study the influence of animal mature size on maturing rate.
M. Kastelic, A. ŠAlehar, M. Drobnič, M. Kovač   +3 more
openaire   +1 more source

Mature size determination in copepods the adaptive significance of mature size in copepods: output or efficiency selection?

Ecological Modelling, 1997
Abstract Species of small crustaceans show changes in the size of mature females in successive seasonal generations. The proximal factors influencing seasonal variations in mature size may involve environmental conditions such as temperature and food conditions and biological factors such as predation.
openaire   +1 more source

The molecular size of lactate dehydrogenase isozymes in mature testes

Biochimica et Biophysica Acta (BBA) - Protein Structure, 1968
Abstract Lactate dehydrogenase isozymes in mature testes from pigeon, mouse, rabbit and human were applied to a Sephadex G-200 gel-filtration system, and the molecular forms of lactate dehydrogenase ( l -lactate: NAD oxidoreductase, EC 1.1.1.27) in the effluent fractions were resolved by starch gel electrophoresis.
W H, Zinkham, N A, Holtzman, H, Isensee
openaire   +2 more sources

Effects of follicle size and stages of maturation on mRNA expression in bovine in vitro matured oocytes

Molecular Reproduction and Development, 2007
AbstractTranscription in bovine oocytes: The goal of this study was to unravel the dynamics of transcripts thought to be critically involved in oocyte maturation. The relative abundance (RA) of DYNLL1 (cytoplasmic dynein light chain LC8), DYNC1I1 (cytoplasmic dynein 1 intermediate chain), DCTN1 (dynactin 1; pGlued homolog, the activator of the ...
Silvia E, Racedo, Christine, Wrenzycki, Doris, Herrmann, D, Salamone, Heiner, Niemann   +4 more
openaire   +2 more sources