282:, where the maternal circulation provides for the nutritional needs. Distinguishing between the definitions of oviparity and ovuliparity necessarily reduces the number of species whose modes of reproduction are classified as oviparous, as they no longer include the ovuliparous species such as most fish, most frogs and many invertebrates. Such classifications are largely for convenience and as such can be important in practice, but speaking loosely in contexts in which the distinction is not relevant, it is common to lump both categories together as just "oviparous".
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or whether she actively or passively picks it up — the female lays eggs containing zygotes with a substantial quantity of yolk to feed the embryo while it remains in the egg, and in many species to feed it for some time afterwards. The egg is not retained in the body for most of the period of
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is a special form of oviparity where the eggs are retained inside the mother (but still metabolically independent), and are carried internally until they hatch and eventually emerge outside as well-developed juveniles similar to viviparous animals.
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traditionally including any mechanism where young are born live, or where the development of the young is supported by either parent in or on any part of their body.
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recently divided the traditional category of oviparous reproduction into two modes that are distinguished on the basis of the relationship between the
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The traditional modes of reproduction include oviparity, taken to be the ancestral condition, traditionally where either unfertilised
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with little or no embryonic development within the mother. This is the reproductive method used by most animal species, as opposed to
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to support the growth and activity of the embryo after fertilization, and sometimes for some time after hatching as well. Among the
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in proximity to the eggs. In whichever form they are laid, the eggs of most ovuliparous species contain a substantial quantity of
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animals that develop the embryos internally and metabolically dependent on the maternal circulation, until the mother gives
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In all but special cases of both ovuliparity and oviparity, the overwhelming source of nourishment for the embryo is the
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Lode, Thierry (2012). "Oviparity or viviparity? That is the question ...".
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347:Les stratégies de reproduction des animaux
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365:at the U.S. National Library of Medicine
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34:Eggs of various animals (mainly birds)
772:Hypothalamic–pituitary–prolactin axis
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129:or fertilised eggs are spawned, and
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144:(fertilised egg) and the parents:
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66:) in metabolically independent
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322:10.1016/j.repbio.2012.09.001
213:, in which fertilization is
949:(Histotrophic, Hemotrophic)
56:outside the body (known as
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1639:Animal reproductive system
1044:Live-bearing aquarium fish
757:Reproductive endocrinology
230:. Oviparity occurs in all
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959:
825:Human reproductive system
258:) are uniquely oviparous.
367:Medical Subject Headings
238:, some fishes, and most
373:Oviparity – an overview
183:. It also occurs among
136:However, the biologist
985:Internal fertilization
980:External fertilization
847:Diseases and disorders
656:Sexual differentiation
35:
1039:Gastric-brooding frog
926:Modes of reproduction
879:Premature ejaculation
874:Hard flaccid syndrome
544:Human sexual activity
121:Modes of reproduction
115:Modes of reproduction
33:
1504:Egg drop competition
1008:fish (mouthbrooding)
869:Erectile dysfunction
375:at sciencedirect.com
310:Reproductive Biology
77:, which nurture the
648:reproductive system
636:Vaginal lubrication
414:sexual reproduction
270:of the mother (the
268:reproductive system
1499:Egg-and-spoon race
1326:List of egg dishes
1139:Fish and amphibian
1120:List of egg topics
646:Development of the
557:Sexual intercourse
199:and several other
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1559:Ovo vegetarianism
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1064:Pregnancy in fish
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661:Sexual dimorphism
626:Postpartum period
250:(four species of
219:injects the sperm
39:Oviparous animals
16:(Redirected from
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119:Main article:
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1396:Onsen tamago
1242:
1034:Adelphophagy
941:
719:Paternal age
715:Maternal age
688:Tanner scale
671:Virilization
666:Feminization
616:Implantation
602:Insemination
586:Ejaculation
562:Masturbation
478:spermatocyte
450:Luteal phase
435:Menstruation
346:
343:Thierry Lodé
338:
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138:Thierry Lodé
135:
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38:
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1514:Fabergé egg
1069:Trophic egg
1054:Matrotrophy
864:Dyspareunia
859:Dysorgasmia
805:Development
316:: 259–264.
280:matrotrophy
193:echinoderms
189:ctenophores
173:vertebrates
151:, in which
149:Ovuliparity
1633:Categories
1524:HowToBasic
1519:Free range
1494:Easter egg
1489:Decorating
1471:In culture
1361:Deep fried
1282:Components
1162:Cephalopod
947:Viviparity
884:Vaginismus
854:Anorgasmia
708:Adrenarche
703:Spermarche
683:Gonadarche
286:References
254:, and the
248:monotremes
240:arthropods
185:cnidarians
181:amphibians
131:viviparity
94:viviparous
90:hatchlings
86:offsprings
68:incubation
51:fertilized
18:Egg-laying
1479:Balancing
1441:Scrambled
1253:Ovulation
1243:Oviparity
1223:Oogenesis
1182:Pathology
1144:Monotreme
942:Oviparity
810:Lactation
800:Thelarche
777:Andrology
724:Menopause
621:Pregnancy
611:Fertility
566:Erection
522:Germ cell
495:Oogenesis
483:spermatid
445:Ovulation
363:Oviparity
264:nutrients
211:oviparity
179:and most
102:juveniles
88:known as
73:known as
47:reproduce
1605:Category
1406:Powdered
1391:Omelette
1386:Meringue
1336:Benedict
1303:membrane
1203:Egg cell
1176:dinosaur
747:Vivipary
717: /
698:Menarche
693:Pubarche
575:Clitoral
527:gonocyte
500:oogonium
430:Menarche
345:(2001).
330:23153695
256:platypus
242:. Among
236:reptiles
215:internal
206:as well.
197:molluscs
157:external
100:to live
63:spawning
1617:Commons
1586:Tossing
1581:Tapping
1576:Rolling
1564:Pysanka
1549:Organic
1544:Oomancy
1456:Soufflé
1446:Shirred
1411:Pickled
1401:Poached
1366:Deviled
1351:Coddled
1346:Century
1318:As food
1308:Chalaza
1268:Trophic
1238:Oviduct
1228:Ootheca
1198:Allergy
1191:Biology
1172:Reptile
1059:Oophagy
1018:mammals
782:Hormone
678:Puberty
252:echidna
244:mammals
234:, most
209:(True)
161:oocytes
127:oocytes
54:zygotes
43:animals
1644:Oology
1539:Oology
1509:Egging
1484:Carton
1451:Smoked
1436:Scotch
1431:Salted
1416:Quiche
1371:Eggnog
1341:Boiled
1273:Zygote
1218:Oogamy
1208:Embryo
1013:humans
838:Female
792:Breast
595:Female
582:Orgasm
570:Penile
532:gamete
505:oocyte
369:(MeSH)
328:
177:fishes
165:sperms
142:zygote
83:moving
79:embryo
71:organs
58:laying
1426:Salad
1376:Fried
1331:Balut
1299:Shell
1294:White
1263:Tooth
1258:Spawn
1233:Ovary
1127:Types
1003:birds
934:Modes
510:ootid
488:sperm
232:birds
204:phyla
98:birth
81:into
45:that
1534:Hunt
1381:Iron
1301:and
1289:Yolk
1167:Fish
1134:Bird
1111:Eggs
833:Male
742:Ovum
590:Male
515:ovum
326:PMID
169:yolk
75:eggs
41:are
1461:Tea
1421:Roe
734:Egg
412:of
318:doi
155:is
60:or
1635::
609:/
324:.
314:12
312:.
294:^
246:,
195:,
191:,
187:,
104:.
1178:)
1174:(
1103:e
1096:t
1089:v
918:e
911:t
904:v
402:e
395:t
388:v
332:.
320::
20:)
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