hologamyn.
/həʊˈlɒɡəmi/ Biology.
a. A mode of reproduction found in certain protozoa and algæ, in which copulation consists in the fusion of whole organisms morphologically similar to the vegetative form.
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the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [noun] > of protozoa and algae: hologamy
hologamy1925
1925 E. B. Wilson Cell (ed. 3) vii. 582 Hologamy or Macrogamy... This condition is seen in various flagellates, rhizopods, ciliates, diatoms, desmids and the Conjugatæ generally.
1940 L. H. Hyman Invertebrates I. iii. 99 Sexual processes are absent except in Scytomonas where hologamy has been observed.
1965 V. A. Dogiel Gen. Protozool. (ed. 2) vii. 308 Hologamy is characterized by an almost complete absence of the preparatory stage of gametocytes.
b. A mode of reproduction found in certain fungi, in which the entire thallus becomes a gametangium and fusion of two mature individuals occurs.
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the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [noun] > of fungi: hologamy
hologamy1928
1928 C. W. Dodge tr. E. A. Gäumann Compar. Morphol. Fungi iv. 12 This special case of gametangial copulation..is called hologamy.
1965 J. Wilkinson tr. M. Langeron Outl. Mycol. (ed. 2) ix. 378 Hologamy is gametangial copulation of holocarps.
Derivatives
ˈhologamete n. a gamete that is morphologically similar to the vegetative cell and is not specially formed by fission.
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the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > gametes
gamete1878
zoogamete1879
planogamete1880
macrogamete1888
microgamete1888
isogamete1891
megagamete1891
oogamete1891
progamete1892
heterogamete1897
ovum1900
non-crossover1914
merogamete1925
hologamete1926
anisogamete-
1926 G. N. Calkins Biol. Protozoa x. 498 In the case of Scytomonas (Copromonas) subtilis..the evidence appears to be fairly convincing that copulation of hologametes actually does occur.
1932 L. A. Borradaile & F. A. Potts Invertebrata ii. 27 Volvox..and related forms have an anisogamy in which the female gamete is a hologamete.
holoˈgamic adj.
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the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [adjective] > protozoa and algae: hologamy
hologamic1925
hologamous1925
1925 E. B. Wilson Cell (ed. 3) vii. 589 Gametes of the hologamic type.
hoˈlogamous adj.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [adjective] > protozoa and algae: hologamy
hologamic1925
hologamous1925
1925 E. B. Wilson Cell (ed. 3) vii. 583 Even when hologamous gametes are alike or closely similar in appearance they often display definite physiological differences that become evident at the time of conjugation.
1965 V. A. Dogiel Gen. Protozool. (ed. 2) vii. 309 Hologamous copulation takes place also in some Phytomonadina belonging to the genus Chlamydomonas.
This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018).
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n.1925