fertilization

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References in periodicals archive ?
The findings show that when eggs from each species are presented with either salmon or trout, they happily allow complete fertilization by either species' sperm.
Lead researcher Prof Matt Gage, from UEA's School of Biological Sciences, said that the salmon-trout system is ideal for studying sperm-egg compatibilities because we are able to conduct controlled fertilization experiments and measure sperm behaviour under conditions to which the gametes are naturally adapted.
To obtain high yields of larvae for culture, in vitro fertilization is a technique that must be developed and optimized.
Data recorded included percentage of fertilization, based on the number of fertilized eggs for each sperm concentration, and percentage of abnormal eggs.
Maximum fertilization occurred at a sperm-to-egg ratio of 100:1 (see Results), and this was used for mixing spawned eggs with sperm in a larger quantity.
In talks and wide-ranging discussions, participants raised serious doubts about the practicality, efficacy, and safety of large-scale iron fertilization.
Martin made his pronouncement jokingly because he knew that he was glossing over several hindrances to using iron fertilization to sequester carbon in the ocean.
What is critical for the effectiveness of iron fertilization schemes is the amount of organic carbon that actually sinks from the surface and is sequestered in the depths (see Page 10).
The group's ethic rules allow in vitro fertilization using sperm and eggs from a married couple.
speaking at a conference on ocean iron fertilization at Woods Hole Oceanographic Institution (WHOI) in September.
Assemble a list of the ways iron fertilization might harm the ocean--as the Scientific Group of the London Convention did earlier this year--and it quickly becomes lengthy and distressing.
KEY WORDS: scallop, assortative fertilization, Chlamys farreri, Patinopecten yessoensis
Whereas, assortative fertilization or gamete preference, which is commonly regarded as a post-mating, pre-zygotic isolating mechanism, has only recently come to prominence and is increasingly accepted as another important possible barrier to hybridization and gene flow between closely related species (Bierne et al.
The iron-rich waters in his study supplied less than one-thousandth as much dissolved iron (per unit area) as artificial fertilizations do, yet plankton use it much more efficiently.
In projecting the future of iron fertilization, scientists use several lines of evidence to augment what they have learned from the 12 small-scale iron-addition experiments they have conducted since 1993 (see Page 10).