What's the difference between ovoviviparous and viviparous?
Ovoviviparous
Definition:
(a.) Oviparous, but hatching the egg while it is within the body, as some fishes and reptiles.
Example Sentences:
(1) The uterine epithelium of the viviparous Salamandra atra and the ovoviviparous Salamandra salamandra was studied in non pregnant and ovulating females and in females during different stages of pregnancy.
(2) The guppy is an ovoviviparous teleost with fertilization and gestation occurring intrafollicularly, and ovulation and hatching at around parturition.
(3) n. from the opossum, Didelphis marsupialis, is distinguished from other genera of the Angoistrongylinae by the structure of the dorsal and lateral rays, complex gubernaculum, and ovoviviparity.
(4) Second-year individuals of Gemma gemma also are randomly distributed, but its total population is aggregated because of its ovoviviparous habit.
(5) These hydrolysing activities were unexpected for an ovoviviparous reptile.
(6) Seasonal modulation in antibody production in relation to the state of lymphoid tissue development was studied in the ovoviviparous fish, S. marmoratus.
(7) The development of the limbs has been studied in 15 embryos of Scelotes gronovii, found in 8 ovoviviparous females collected at Saldanha Bay, in South Africa, Cape Province.
(8) The present investigation describes the fine structural changes that occur during proteid yolk formation in the developing oocytes of the guppy (Lebistes reticulatus), an ovoviviparous teleost.
(9) In this ovoviviparous cockroach, the onset of vitellogenesis may thus not be triggered solely by juvenile hormone, and indolamines may play a role in the uptake of haemolymphatic proteins by oocytes.
(10) In one of them Helisoma duryi was used due to its ecological advantages as compared with the intermediate host (higher growth rhythm and lower generational time), and in the other Tarebia granifera was used, which has biological and ecological advantages upon most mollusks (ovoviviparous, parthenogenetic, longer life cycle and higher growth rhythm).
(11) The central fat body of the ovoviviparous cockroach Nauphoeta cinerea was studied during the first reproductive cycle of the female by means of light microscopy, autoradiography and electron microscopy.
(12) It is easily maintained in the laboratory; the female is ovoviviparous, carries up to 40 embryos in its brood pouch, and young-to-young cycle is about 10 weeks.
Viviparous
Definition:
(a.) Producing young in a living state, as most mammals, or as those plants the offspring of which are produced alive, either by bulbs instead of seeds, or by the seeds themselves germinating on the plant, instead of falling, as they usually do; -- opposed to oviparous.
Example Sentences:
(1) This series of transitions at the embryonic age (up to the time of egg viviparity) is connected with ecological peculiarities of different species.
(2) The uterine epithelium of the viviparous Salamandra atra and the ovoviviparous Salamandra salamandra was studied in non pregnant and ovulating females and in females during different stages of pregnancy.
(3) Based on in vivo and in vitro modulation of immune responses by placental products, it is concluded that: 1) allograft enhancement and high production of IgG1 antibodies are not linked to the same glycoprotein, 2) the immunomodulators in relation to the protection of viviparity appear to be located at the exclusion limits of Sephacryl S-200 (i.e.
(4) Splenic cells from pregnant and non-pregnant viviparous lizards (Chalcides ocellatus) were stimulated in vitro with the mitogens, concanavalin A (Con A), phytohemagglutinin (PHA) and Escherichia coli lipopolysaccharide (LPS).
(5) It therefore appears that in the genus Wuchereria, as in the other viviparous filarioids, the phenomenon of speciation is evident first of all in the morphology of the microfilaria, the stage most susceptible to selection pressures.
(6) A plasma steroid binding protein (SHBP) with medium-high affinity and limited capacity was characterized in the viviparous water snake, Nerodia.
(7) We investigated the regulation of Re by progesterone in a mammalian model (proestrous hamster uterus) and an avian model (DES-primed chick oviduct), under the same assay conditions, in an effort to compare progesterone action in viviparous and oviparous species.
(8) This character opposes these species to the other viviparous Filariae and stresses the originality of the Oswaldofilariinar.
(9) The neurosecretory A cells of the pars intercerebralis of the viviparous fly Glossina fuscipes fuscipes present important changes during the genital cycle.
(10) Viviparity, on the other hand, allows the growth of a much larger fetus, offers great protection and is highly efficient.
(11) Steroid concentrations in plasma and follicular tissues (theca plus granulosa layers) were determined by radioimmunoassay in the aplacental viviparous ray, Torpedo marmorata, during various stages of the reproductive cycle.
(12) Etiology was determined to be a viviparous pinworm-like nematode of the genus Proatractis (Family Atractidae).
(13) In this paper is also presented a discussion about the different modes of reproduction oviparity and viviparity (placental and non-placental) and their variations according to families, genus and species.
(14) The ability of arachidonic acid (AA) and prostaglandins of the two series to induce parturition in vivo and oviducal contraction in vitro was studied in the viviparous lizard Sceloporus jarrovi.
(15) In the viviparous guppy, fertilization and gestation are intrafollicular.
(16) Here we described the emergence of T-cell immune capability in the viviparous lizard (Chalcides ocellatus) throughout embryonic development (stages 36-41 of Zada and El Deeb, 1984) and in newborns.
(17) Uterine contractility was investigated in the viviparous lizard Tiliqua rugosa.
(18) On the basis of these observations we speculate that viviparity might occur in vivo with consequent autoinfections; if so, this might explain some puzzling clinical and epidemiological features of haemonchosis, as well as the incomplete efficacy of current control measures.
(19) In a previous study we characterized an oviduct progesterone receptor in the viviparous snake, Nerodia, and in this study we describe changes in receptor during the reproductive cycle.
(20) The Viviparous-1 (Vp1) gene is required for expression of the C1 regulatory gene of the anthocyanin pathway in the developing maize seed.