Mosquito mating mechanism could lead to new attack on dengue and yellow fever
Cornell researchers have identified a
mating mechanism that possibly
could be adapted to prevent female mosquitoes from spreading the
viruses that cause dengue fever, second only to malaria as the most
virulent mosquito-borne disease in the tropical world.
Specifically, they have discovered 63 ...
Study garners unique mating photos of wild gorillas
Scientists from the Wildlife Conservation Society and Max Planck Institute for Evolutionary Anthropology have released the first known photographs of gorillas performing face-to-face copulation in the wild. This is the first time that western gorillas have been observed and photographed
mating in...
Fishes Use Threat of Punishment in Mating Process
Australian marine scientists has found that fishes use the threat of punishment to keep would-be jumpers in the
mating queue firmly in line and the social order stable.
Their discovery, which has implications for the whole animal kingdom including humans, has been hailed by some of the world...
Fruit Crop Fungicide Induces Permanent Changes in Mating Behavior
Austin— Researchers from The University of Texas have discovered the intuitive ability of female rats, who simply give a cold shoulder to male rats// whose descent is contaminated by a common fruit crop fungicide; instead they showed a preference to male rats whose ancestors were untainted.
...
Strong Evidence Suggests Incidence Of Mating Of Ancestors With Neanderthals
A recent scientific study conducted at the Howard Hughes Medical Institute and the University of Chicago led by Bruce T. //Lahn suggests that human evolution may not be all about unprompted mutations that occurred on the spur of a moment but because of interbreeding with related species on the verg...
Amorous African Fish Exchange Electric Pulses While Mating
Some African fish signal their amorous intentions by exchanging bursts of electrical impulses, a new study has found .
Scientists describe this behavior as being somewhat similar to the courtship duets of songbirds.
According to the study, which has been reported by National Geogra...
Discovery in amber reveals ancient biology of termites
...found in amber. It was just published in Parasites and Vectors , a professional journal.
This particular termite was probably flying around while
mating in a wet, humid tropical forest in what is now Myanmar during the Early Cretaceous period the age of the dinosaurs. It may have been attacked by a bi...
Meat for sex in wild chimpanzees
...S ONE April 8, 2009.
How females choose their
mating partners and why males hunt and share meat with th...hesis, whereby males and females exchange meat for
mating access. However, there has been little evidence in...g that sharing meat with females improves a males'
mating success. Although males were more likely to share ...
Fish in U.S. Rivers Tainted With Common Medications
...ife. This study is part of a federal strategy to address the issue.
Previous research has concluded that behavior vital for fish survival, such as
mating and fighting, can be affected if too much antidepressant residue collects in their systems.
While other studies have found pharmaceuticals and pers...
This February Discovery en Espanol Delves Into The Subconscious World of Attraction in 'Science of Sex Appeal'
...ho are not ovulating,
while women shoot back with copulins, which makes men find all of them sexy.
The truly tantalizing mix and varied signals in the
mating dance of life, as
explored in SCIENCE OF SEX APPEAL, lifts the covers to reveal the astounding
science behind what makes us click with one another.
...
Mating in Medical Technology
New England Journal of Medicine Publishes New Data on Gardasil,
Merck's Cervical Cancer Vaccine
... rats at a dose of 120 mcg total
protein, which corresponds to approximately 300-fold excess relative
to the projected human dose, had no effects on
mating performance,
fertility, or embryonic/fetal survival.
Pregnancy
Pregnancy Category B:
Reproduction studies have been performed in female rat...
Data Published in The Lancet Show Gardasil was 100 Percent
Effective in Preventing High-Grade Vulvar and Vaginal Lesions
Caused by HPV Types 16 and 18
... rats at a dose of 120 mcg total
protein, which corresponds to approximately 300-fold excess relative
to the projected human dose, had no effects on
mating performance,
fertility, or embryonic/fetal survival.
Pregnancy
Pregnancy Category B:
Reproduction studies have been performed in female rat...
Late Breaking Data Released at ADA Showed that the Investigational
Use of Januvia and Metformin as Initial Combination Therapy
Provided Significant Glucose Lowering Efficacy over 54 Weeks in
Patients with Type 2 Diabetes
...ated for 4 weeks prior to mating, during
mating, up to scheduled termination (approximately 8 weeks total) and
females were treated 2 weeks prior to
mating through gestation day 7.
No adverse effect on fertility was observed at 125 mg/kg
(approximately 12 times human exposure at the MRHD of 100 mg/day b...
An Investigational Study Released at ADA Showed that Initial
Combination Therapy with Januvia (sitagliptin) and Metformin Led to
Improvement in Markers of Beta Cell Function in Patients with Type
2 Diabetes
...ated for 4 weeks prior to mating, during
mating, up to scheduled termination (approximately 8 weeks total) and
females were treated 2 weeks prior to
mating through gestation day 7.
No adverse effect on fertility was observed at 125 mg/kg
(approximately 12 times human exposure at the MRHD of 100 mg/day b...
Mating in Medical Products
Fisherbrand* Microslide Cabinets
Features:...cope slide holders Includes inside door stop to prevent spills, lock compressor to keep slide holders in place Gray enamel finish Have interlocking
mating slots for stacking for modular storage system Equipped with rubber feet for placement on lab bench ...
Company:ThermoFisher Scientific
Consensus Knee System
Features:... Congruent (dished) design enhances joint stability and wear reduction through increased contact area.
mating "dovetail" locking feature facilitates proper insertion of insert into baseplate provides resistance to insert micromotion and dislocation....
Company:Hayes Medical, Inc.
Mating in Biological News
1 missing gene leads to fruitless mating rituals
DURHAM, N.C. Male fruit flies missing a gene for one particular odor receptor become clueless in matters of love, scientists at Duke University Medical Center have discovered.
Because they lack the ability to read important chemical cues, these flies will indiscriminately attempt to have sex...
Killer whales, blind bats, discriminating dolphins, mating birds
June 25, 2008 -- Meek and mighty animal sounds are all around us. In a few weeks, some of the most interesting among them will be discussed and heard at the largest meeting ever devoted to acoustical science, the Acoustics '08 Paris meeting, to be held Monday June 30 through Friday July 4 at the P...
Science, not romance, controls mating at Smithsonian's National Zoo
This Valentines Day, Cupid wont be making a stop at the Smithsonians National Zoo. Unlike the spontaneous attraction that most humans equate with love and romance,
mating and dating at the National Zoo is planned, strategic and science-basedquite an unromantic encounter.
Successful breeding is ...
For honey bee queens, multiple mating makes a difference
The success of the reign of a honey bee queen appears to be determined to a large degree by the number of times she mates with drone bees.
That is what research by scientists in the Department of Entomology and W.M. Keck Center for Behavioral Biology at North Carolina State University suggests...
Three-way mating game of North American lizard found in distant European relative
SANTA CRUZ, CA--An intricate three-way
mating struggle first observed in a species of North American lizard has been discovered in a distant relative, the European common lizard. The two species are separated by 5,000 miles and 175 million years of evolution, yet they share behavioral and reproduc...
Fruit flies sick from mating
Mating can be exhausting. When fruit flies mate, the females' genes are activated to roughly the same extent as when an immune reaction starts. This is shown in a study at Uppsala University that is now appearing in the scientific publication, Journal of Evolutionary Biology .*
Using a combin...
The price of vanity: Mating with showy males may reduce offspring's ability to fight off pathogens
In many animals, males advertise to potential mates with showy traits, many of which are linked to testosterone levels. However, a new study suggests that, in fish, choosing a flashier mate may cause future generations to be more susceptible to pathogens.
In the January 2007 issue of The American...
Microfluidic chip helps solve cellular mating puzzle
Using a biochemical version of a computer chip, a team led by Johns Hopkins researchers has solved a long-standing mystery related to the
mating habits of yeast cells.
The findings, described in the Feb. 18 Advance Online Publication of the journal Nature, shed new light on the way cells send a...
Male chimpanzees prefer mating with old females
Researchers studying chimpanzee
mating preferences have found that although male chimpanzees prefer some females over others, they prefer older, not younger, females as mates. The findings uncover a stark contrast between chimpanzee behavior and that of humans, their primate cousins. The basis for ...
Same-sex mating by fungi spawned infection outbreak, evidence suggests
Same-sex
mating between two less harmful yeast strains might have spawned an outbreak of disease among otherwise healthy people and animals on Vancouver Island, British Columbia, Howard Hughes Medical Institute geneticists at Duke University Medical Center have reported. The fungus, Cryptococcus ga...
More>>
Mating in Biological Technology
The Industry Impact of Two Big Pharmas Mating
CHICAGO Early this year, the ongoing saga of the consolidating pharmaceutical industry began. For those of you who havent been following the news over the last two weeks, were talking about the hostile bid by French pharmaceutical giant Sanofi-Synthelabo to take over French-German pharmaceutical...
MonoSol Rx and Midatech Group Enter Collaboration Agreement to Unite Nanoparticle and Thin Film Drug Delivery Technologies
... and compelling drug candidates with the
potential for greater convenience, efficacy at lower doses, and faster
onset of action. Most importantly, the
mating of MonoSol Rx's and
Midatech's technologies will enable the oral delivery of many challenging
drugs that up to now could not be delivered orally."
M...
First documented case of pest resistance to biotech cotton
... resistant insects are rare, the only mates they are likely to encounter would be susceptible insects from the refuges. The hybrid offspring of such a
mating generally would be susceptible to the toxin. In most pests, offspring are resistant to Bt toxins only if both parents are resistant.
In bollworm, h...
The world's largest factory
...ies and surplus raw materials. The remaining nations pray and hope that the
mating of these two elephants will result in true love. The trade imbalances are w...aw materials. The other remaining 200 nations simply pray and hope that the
mating of these two elephants will result in some romance with true love. The trad...
Sub-Micron Gold Particles Are Superior to Larger Particles for Efficient Biolistic Transformation of Organelles and Some Cells
...a lacking uracil. Mitochondrial transformants were
identified by
mating the [rho o ] Ura + nuclear transformants with a respiration-deficient
...sformants were then analyzed for mitochondrial transformation
by
mating to S. cerevisiae strain 161 on glucose-containing media (Anziano
...
The Bio-Rad Silver Stain, Rev E
...use interleukin-2 by Saccharomyces
cerevisiae: use of a general secretion vector containing promoter and
leader sequences of the
mating pheromone α-factor, Gene 37, 155161
(1985)
60. Mogi M et al., Detection of inactive or less active forms of tyrosine
...
Mating in Biological Products
Mating in Biological Definition
Bacterial conjugation
... Bacterial conjugation is the often regarded as the bacterial equivalent of sexual reproduction or
mating ; however it is not actually sexual as it does not involve the fusing of gametes and the creation of a zygote , it is merely the exchange of geneti...
Evolution
...cannot be ascribed to selective pressures, but are due instead to events that are unrelated to inherited traits. This is especially important in small
mating populations, where chance fluctuations from generation to generation can be large. Such fluctuations in allele frequency between successive generation...
Fungus
... Sexual
Fungal mycelia are typically haploid . When mycelia of different
mating types meet, they produce two multinucleate ball-shaped cells, which form a
mating bridge. The result is that nuclei move from one mycelium into the other, fo...
Hardy-Weinberg principle
...ertain conditions, after one generation of random
mating , the genotype frequencies at a single gene locu...etic drift )
sexually reproducing
randomly
mating
diploid
and experience:
no selecti...y the Wahlund effect , inbreeding , assortative
mating , selection , or genetic drift . Assortative...
Hermaphrodite
...rious for many reasons, including that they seem to be evolving into different species quite rapidly. Unlike other fishes, hamlets seem quite at ease
mating in front of divers, allowing observations in the wild to occur readily. They do not practice self fertilization, but when they find a mate, the pair ...
Isozyme
...s to develop, and remain (as of 2005 ) an excellent choice for projects that only need to identify low levels of genetic variation, e.g. quantifying
mating systems .
References
Hunter, R. L. and C.L. Merkert. (1957) Histochemical demonstration of enzymes separated by zone electrophoresis in sta...
Molecular evolution
...cannot be ascribed to selective pressures, but are due instead to events that are unrelated to inherited traits. This is especially important in small
mating populations, which simply cannot have enough offspring to maintain the same gene distribution as the parental generation.
Gene flow : or gene ad...
Muller's ratchet
...ne animal has the deleterious mutation in one gene and the advantageous mutation in another, while another animal has two normal copies of the gene, a
mating of these animals can produce offspring with the advantageous mutation and without the deleterious one. Thus, a deleterious mutation coupled with an a...
Parthenogenesis
...oduction in these asexual whiptail lizards is that
mating behaviors are still seen even though the populatio...species lack males, activation of the egg requires
mating with males of a cloesly related species. Some sal...lamanders may be due to the rare (perhaps only one
mating out of a million) actual fertilization of eggs by ...
Speciation
...ecies emerge alongside the old. This might occur if, say, subpopulations become dependent on different plants in the same area; and if variations in
mating lead one subpopulation to become reproductively isolated from the other. Many examples of this kind of speciation are found in the invertebrates , ...
Mating in Biological Dictionary
Mating
In biology,
mating is the pairing of opposite-sex or hermaphroditic organisms for copulation and, in social animals, also to raise their offspring. For animals,
mating methods include random
mating , disassortative
mating ,... One of the world's largest video sites, serving the best videos...
Random mating
(Redirected from Random
mating ) Jump to: navigation, search ... Random
mating is a factor assumed in the Hardy-Weinberg principle and is ... Assortative
mating takes place when sexually reproducing organisms tend to mate with individuals that are like themselves in some respect...
Assortative mating
Assortative
mating takes place when sexually reproducing organisms tend to mate with individuals that are like themselves in some respect or dissimilar . In evolution, these two types of assortative
mating have the effect, respectively, of reducing and increasing the range of variation, or ...
Zygospore
... A zygospore is a reproductive part of a fungus, a chlamydospore that is created by the nuclear fusion of haploid hyphae of different
mating types. Definition of zygospore from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games....
Turbellarian
... The turbellarian Pseudoceros dimidiatus. Two turbellarians
mating by penis fencing. ... However turbellarian statocysts have no sensory cilia, and it is unknown how ... ... of tiny Genus Paravortex member tu...
Transgenic mouse
...e desired transgenic mice . ... ... with proven tissue specific expression in transgenic mice where possible. ... must be reiterated by
mating with non- transgenic mice to demonstrate germ ... Transgenic mice have become powerful reagents for modeling genetic disorders, ... To gene...
Sex cells
... cells . ... In the broad sense it includes everything from the sex cells to sexual behaviour. ... Sex cells . Sexuality: complementary
mating types. The adaptive ... 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33....
Population genetics
... of Population Genetics . 1.1 Replication of Populations. 1.2 Template Mutations ... Concept 1: A Large Breeding Population . Concept 2: Random
mating ... Population Genetics and Evolution. by Theresa Knapp Holtzclaw. Introduction ... Population Genetics . Genetic Drift: Blood Type Populati...
Oviducts
...It is within the oviducts that fertilization (the union of the sperm cell and ovum) occurs. ... Adding another layer of competition to the
mating game, scientists are reporting possible biochemical proof that the ... in the oviducts that control sperm ... Owners of mares should know co...
Outbreeding
...down of biochemical ... Outbreeding is the
mating of two dogs who not only are the products of two ... when available, background ... outbreeding - A
mating system characterized by the inter ... outbreedin... outbreeding /out·breed·ing/ (out'brēd′′ing) the
mating of unrelated ... Amazon.com: The Natural Histo...