(n.) Any plant of the genera Asclepias and Acerates, abounding in a milky juice, and having its seed attached to a long silky down; silkweed. The name is also applied to several other plants with a milky juice, as to several kinds of spurge.
Example Sentences:
(1) Experimental vein severance renders milkweed leaves edible to generalist herbivores that do not show vein-cutting behaviors and ordinarily ignore milkweeds in nature.
(2) Many mandibulate insects that feed on milkweeds, or other latex-producing plants, cut leaf veins before feeding distal to the cuts.
(3) The significance of these findings are discussed in light of the recent discovery that the C28-ecdysone, makisterone A, is the predominant molting hormone inthe embryonated egg of the milkweed bug.
(4) Chromosomal fragments and translocations induced by x-rays in the sperm of adult milkweed bugs, Oncopeltus fasciatus (Dallas), were detected in the meiotic cells of F(1), F(2), and F(3), males and caused high levels of sterility in lintreated progeny.
(5) The WWF, which carries out the census of the Mexican colonies in co-ordination with the Mexican government, says the extensive use of herbicides is wiping out vast quantities of the milkweed that provides the butterflies with their main food source and breeding grounds.
(6) But research by Lundgren and his team also found that 60% of the milkweed in their South Dakota study area was contaminated by the pesticide, which even at low levels causes monarch larvae to grow much more slowly and reach much smaller size.
(7) Polinnators are important to a huge portion of our food supply ... anything that flowers.” One reason for the decrease is a drop in the amount of milkweed, which monarch larvae eat, Lundgren said.
(8) Significant amounts of immunoreactive cardiac glycoside were found to be present in the ornamental shrubs: yellow oleander (Thevetia peruviana); oleander (Nerium oleander); wintersweet (Carissa spectabilis); bushman's poison (Carissa acokanthera); sea-mango (Cerbera manghas); and frangipani (Plumeria rubra); and in the milkweeds: redheaded cotton-bush (Asclepias curassavica); balloon cotton (Asclepias fruiticosa); king's crown (Calotropis procera); and rubber vine (Cryptostegia grandifolia).
(9) Several aromatic terpenoid ethers possess a high degree of morpho-genetic activity when assayed on the yellow mealworm Tenebrio molitor L. and the milkweed bug Oncopeltus fasciatus (Dallas).
(10) Cortisol increased growth and differentiation in the large milkweed insect (Oncopeltus fasciatus).
(11) Analysis of the sterols of the milkweed bug, Oncopeltus fasciatus (Dallas) and dietary sunflowerseeds revealed that there is little, if any, conversion of dietary C28 OR C29 phytosterols to cholesterol in this phytophagous insect.
(12) In order to determine whether the genes coding for ribosomal RNA (rRNA) are amplified in the telotrophic ovary of the milkweed bug Oncopeltus fasciatus, the percentages of the genome coding for ribosomal RNA in somatic cells, spermatogenic cells, ovarian follicles, and nurse cells were compared.
(13) The use of herbicides destroying milkweed is directly linked to the mass cultivation in the great plain states of the US of genetically modified soybean and corn crops with inbuilt resistance to chemicals that the rest of the plants in the areas sprayed do not have.
(14) We have analyzed electron micrographs of chromatin-associated fiber arrays from embryos of the milkweed bug, Oncopeltus fasciatus.
(15) Scientists are extremely concerned that monarch populations are declining because the caterpillar's only food source – milkweed – is being eradicated.
(16) The persistence of these fragments through numerous generations of cells confirmed the holokinetic nature of the milkweed bug chromosomes.
(17) SK Films, the American distributor, is encouraging audiences to grow milkweed and also to create their own butterfly gardens by selling seed-packets in cinemas.
Redhead
Definition:
(n.) A person having red hair.
(n.) An American duck (Aythya Americana) highly esteemed as a game bird. It is closely allied to the canvasback, but is smaller and its head brighter red. Called also red-headed duck. American poachard, grayback, and fall duck. See Illust. under Poachard.
(n.) The red-headed woodpecker. See Woodpecker.
(n.) A kind of milkweed (Asclepias Curassavica) with red flowers. It is used in medicine.
Example Sentences:
(1) As a child, it was the sound not just of the latest news and the sharpest comment, but also of my best friend’s dad Brian Redhead, who inspired my love of radio .
(2) It is concluded that photosensitive and photorefractory female redheaded bunting monitor the photoperiodic time by means of a circadian rhythm.
(3) These experiments strongly suggest the involvement of superoxide in the aerobic photolysis of pheomelanin and point out a possible mechanism for ultraviolet-induced cell damage in redheads.
(4) alpha-Melanocyte stimulating hormone failed to increase tyrosinase synthesis in the hair follicles of either group of subjects and in the follicles from the redheads actually produced a decrease.
(5) Previous studies have shown that if domestic mallard ducklings are allowed social interaction with broodmates after their initial exposure to a stuffed mallard (Anas platyrhynchos) hen, they later show a visual preference for the familiar mallard over an unfamiliar redhead (Aythya americana) hen.
(6) Previous studies revealed that if socially reared mallard ducklings actively follow a stuffed mallard (Anas platyrhynchos) hen, they later show a visual preference for the familiar mallard hen over an unfamiliar redhead (Aythya americana) hen.
(7) or that every redhead in New York seems to have been planning to go as Holloway to this year's Halloween party.
(8) In a study of 318 Caucasian college students, obese persons and redheaded men were seen as unattractive compared to the nonobese and other hair colors.
(9) Pink jeans, Ted Nugent T-shirt, always stoned, driving his beloved hot rod and chasing redheads – every small town has a Wooderson.
(10) Early in development (at 48 hr after hatching), they show a visual preference for the mallard over a redhead model, a difficult discrimination that isolated birds do not make (Experiment I).
(11) Princess Diana was recorded telling James Gilbey on the so-called "squidgygate tape": "Jimmy Savile rang me up yesterday, and he said: 'I'm just ringing up, my girl, to tell you that His Nibs [Prince Charles] has asked me to come and help out the redhead [the Duchess of York], and I'm just letting you know, so that you don't find out through her or him; and I hope it's all right by you.'"
(12) The understated, undervalued redhead broke his leg in November and scored the Cup final winner in May.
(13) Pintails and lesser scaup gave the poorest results, and pekin duck, black duck, and redhead duck were intermediate.
(14) How he was released The chain of events which brought Igor Sutyagin to the UK was set in motion in June when FBI agents swooped on 10 "sleeper agents" who were charged with belonging to an espionage ring run by the Russian intelligence service, including the photogenic redhead Anna Chapman.
(15) In 1977, while I was performing in a play in Cardiff, a friend introduced me to a striking redhead called Myfanwy Talog, famed for her appearances on Welsh television with the comedy duo, Rees and Ronnie.
(16) It’s almost like someone has to break that door down for everyone else to go through.” [Racial bias in the music industry] is never going to go away – there are just demons there Jones says that one of her grandmothers was half-Scottish and looked white, and her own granddaughter is a blue-eyed redhead.
(17) Ultra-short photoperiods, of 3 h less than the threshold photoperiodic demand of female redheaded bunting, when used in variable time cycles (T cycles) cause ovarian growth and an increase in body weight depending upon the period of the cycle.
(18) As a result, the UK is a far more kaleidoscopic place than it was when I was listening to Brian Redhead.
(19) Significant amounts of immunoreactive cardiac glycoside were found to be present in the ornamental shrubs: yellow oleander (Thevetia peruviana); oleander (Nerium oleander); wintersweet (Carissa spectabilis); bushman's poison (Carissa acokanthera); sea-mango (Cerbera manghas); and frangipani (Plumeria rubra); and in the milkweeds: redheaded cotton-bush (Asclepias curassavica); balloon cotton (Asclepias fruiticosa); king's crown (Calotropis procera); and rubber vine (Cryptostegia grandifolia).
(20) She has collaborated on a string of brilliantly cinematic videos: Romain Gavras (the son of film-maker Costa-Gavras) directed Bad Girls for her, with its high-speed car chases, and before that Born Free , which tackled the issue of ethnic cleansing by showing redheads being rounded up by police and taken to a desert to be shot.