(n.) The organ with which many insects and some other animals deposit their eggs. Some ichneumon files have a long ovipositor fitted to pierce the eggs or larvae of other insects, in order to lay their own eggs within the same.
Example Sentences:
(1) Unfertilized eggs of the rose bitterling (Rhodeus ocellatus ocellatus) were squeezed out of females that had an elongated ovipositor and were dechorionated mechanically with fine forceps in physiological saline.
(2) He stared not at the twitching Petrobras P36 with its concrete in the mere, not at its drill ovipositor injecting slippy black rig eggs into England, but at the sea.
(3) To continuously monitor ovipositor movements a new actograph was devised; it was composed of a radioelement glued at the ventral tip of the ovipositor, a scintillation probe to detect ovipositor movements and a microcomputer to store and process data.
(4) Sensilla on legs and ovipositor of the moth Ostrinia nubilalis were investigated by light and scanning electron microscopy.
(5) Electrical recordings from the ovipositor nerves in the isolated nervous system showed spontaneous rhythmical bursting activity.
(6) The eighth and ninth segmental nerves of the terminal abdominal ganglion supply the ovipositor muscles.
(7) In females, the overall structure of the ovipositor appeared flaccid, less sclerotized, and misshapen.
(8) Two model proctolinergic systems are highlighted: motor control of the visceral muscles of the locust oviduct and of the skeletal muscles of the locust ovipositor.
(9) Rhythmical ovipositor movements are produced by the severed abdomen of sexually mature female grasshoppers.
(10) On the basis of a comparative morphological and embryological analysis the author concludes that lower mammals (ovipositors and marsupials) and higher mammals should not be united into a single class.
(11) The little known species, which are redescribed in detail with the illustration of the male genitalia and female ovipositors, and the key, which is revised to the genera and species, are also presented in this paper.
(12) The form of the female ovipositor indicates that other species of Chathamidae utilize starfish species as oviposition hosts.
(13) The female reproductive system consists of bursa copulatrix, ductus bursae, receptaculum seminis, paired ducti receptaculi, ovaries, oviducts, one chorion gland, ovipositor, and oviporus.
(14) The removal of the ovaries did not prevent the onset of ovipositor movements.
(15) The ovipositor is composed of two papillae densely packed with medium length mechanoreceptor sensilla (MRb: 80-160 microns, n = 420-460).
(16) Two classes should be distinguished: 1) lower mammals including modern ovipositor animals and marsupial animals and fossilized Multituberculata, Triconodonta, Symmetrodonta and Pantotheria; and 2) higher mammals or placental animals.
(17) Accumulation of pasture ticks Dermacentor marginatus has been discovered in the wool of sheep, 5-6 cm from the skin surface, the temperature in those sites being permanent 18-20 degrees C. The ticks died either in the course or following ovipositor.
(18) The ovipositor appendages of acridid insects (grasshoppers and locusts) consist of two pairs of shovel-shaped valves that are used to dig a deep chamber in the ground for egg burial, to manipulate the eggs, and to assist in capping the egg-pod with froth.
(19) The hanging ovipositor profile identified an ovipositionally spent female.
(20) It has been established that the first ovipositor was only from autogenically developed oocysts.
Protruding
Definition:
(p. pr. & vb. n.) of Protrude
Example Sentences:
(1) Here we present images of polydeoxyadenylate molecules aligned in parallel, with their bases lying flat on a surface of highly oriented pyrolytic graphite and with their charged phosphodiester backbones protruding upwards.
(2) As a basis for the discussion a possible structure for the DNA complex of the phenylated neutral red is considered in which the extra phenyl ring at N-5 of the phenazinium system, protrudes into the large groove of the DNA helix while the tricyclic part of the ligand is inserted between the DNA base-pairs.
(3) Since deglycosylation decreases the frictional ratio of thyroxine binding globulin, it is concluded that, although sialic acid and other sugar residues are in contact with the protein surface, the hydrated carbohydrate chains protrude partially into the solvent.
(4) There are several known enzymes recognizing the same sequence, although the prototype NarI and isoschizomers NdaI and NunII cleave the substrate to produce 5'-protruding ends, whereas cleavage with isoschizomer BbeI results in 3'-protruding ends.
(5) Of 193 patients suffering from peptic ulcer bleeding identified by emergency gastrointestinoscopy, 52 patients were found to have bleeding gastric ulcer (spurt 5, active oozing 9, fresh clot 11, black clot 17, protruding vessel 4, and clear base without stigmata 6); the other 141 had bleeding duodenal ulcer (spurt 5, active oozing 26, fresh clot 43, black clot 23, protruding vessel 15, and clear base without stigmata 31).
(6) The most frequently registered defects were: os tympanicum (smaller): 23%, os tympanicum (missing): 23%; missing tail: 7%; protruding tongue (15%); none of these defects were seen in the control fetuses.
(7) Light microscopic studies indicate it has an ellipsoidal centre from which catalase-positive filamentous or rod-like processes protrude along its major axis; hence, it is called a phi body.
(8) Numerous long irregular microvilli which are protruded from the supporting cells into the mucous film covering the olfactory epithelium contain no axial filaments.
(9) Comparison of posterior airway space was evaluated radiographically on patients with sleep apnea in a mandibular reposed position vs. a mandibular protruded position.
(10) Moreover, some cells protruded cell processes toward the neighboring cells through the extracellular matrix.
(11) In 20, the 'restrictive' tissue simultaneously protruded into the right atrium and ventricle; only in 12 did it extend exclusively into the right ventricle.
(12) But a missing nucleotide (responsible for one unpaired nucleotide protruding at the 3' or 5' end of the complementary strand) does not stop ligation of the shorter oligodeoxynucleotides between independent duplexes.
(13) Astrocyte endfeet of the GLM became irregular in contour, protruding in a fern-leaf fashion into the pial connective tissue.
(14) This strand forms a protruding 3' over-hang at the chromosomal terminus in three different eukaryotes analyzed.
(15) These included non-union at the trochanteric fracture, protruding pin, partial destruction of the femoral head, subcapital fracture of the femoral neck, and avascular necrosis of the femoral head.
(16) The block was produced by a large fragment of bone which had broken off the inferior end plate of the body of L4 and was protruding into the spinal canal.
(17) By transmission electron microscopy, discontinuity of the basal lamina (of the marginal glia) was found, and some tumor cells were found to have protruded their processes into the spinal cord parenchyma.
(18) An ultrastructural study found not only round, but also elongated and drumstick-shaped alpha-granules and rod-like structures protruding from round alpha-granules.
(19) Through combination with a spherical disc face perpendicular to the axis of rotation, which protrudes only slightly from the hemispherical catheter tip, with a maximum at the center and minimum at the lateral borders, the lathing head has only a slight risk of perforation and no undesired sheering forces (Figures 2a to 2d).
(20) A novel concentric design of double-barrelled Ca2+-selective microelectrode, with an inner pipette tip that protrudes beyond an outer one, has recently been developed and is described.