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1
Biology Of Fertilization V2: Biology Of The Sperm
Here they remain motionless until an egg is positioned in the internal entrance to
the intertentacular organ just prior to release. At this point the sperm detach
themselves from the tentacles and move rapidly to the external opening of the ...
2
The Annals and Magazine of Natural History: Zoology, Botany, ...
It is situate in an intertentacular plane, its two orifices open on the oral disc, one
on the outer side, the other on the inner of the crown of tentacles; lastly, the
epithelial covering of its bore is strictly ectodermic. Returning to what has been ...
3
Text-book of the embryology of invertebrates
28a) recently observed in some species of Alcyonidium, that this intertentacular
organ was connected with oviposition. In Alcyonidium albidum, the eggs
probably undergo fertilisation within the body- cavity and become surrounded by
a soft ...
4
Recent and Fossil Bryozoa: Papers Presented at the 5th ...
University Park, Los Angeles, CA 90007, U.S.A. The ultrastructure of the
pharyngeal gutter and intertentacular organ is described for the marine bryozoan
Membranipora serrilamella. The pharyngeal gutter is an accessory reproductive ...
Gilbert Powell Larwood, Claus Nielsen, 1981
5
Oceanography and Marine Biology, An Annual Review
spermatozeugmata passed through the intertentacular organ into the coelom of
the maternal zooid, and sperm fused with primary oocytes during or shortly after
ovulation, up to four days prior to oviposition. Observations apparently indicating
...
6
The Light and Smith Manual: Intertidal Invertebrates from ...
Hydrothecae with longitudinal striations; intertentacular web present, studded
with cnidocysts (plate 44H-44J) Aequorea victoria — Hydrothecae with smooth
walls; intertentacular web absent (see key to hydromedusae, couplet 76) (plate
45H) ...
Sol Felty Light, James T. Carlton, 2007
In live material the shape of the lophophore, the extent of the introvert, the
occurrence of an intertentacular organ (ITO, see Fig. 19.1b, c), and any other
unusual characters (such as the stripes on the introvert our A. sp. #2, Fig. 19.1a)
should be ...
Andrej Ernst, Priska Schäfer, Joachim Scholz, 2012
8
Ctenostome Bryozoans: Keys and Notes for the Identification ...
68) sperm enter the intertentacular organ of the spawning autozooid and fertilize
the egg as it is released (Silen, 1966); it is probable that this occurs in
ctenostome species similarly equipped with an intertentacular organ, but has not
been ...
Peter Joseph Hayward, Linnean Society of London, 1985
9
Reproduction of Marine Invertebrates: Echinoderms and ...
the pharynx in Membranipora serrilamella is specialized into a ciliated gutter
leading to the intertentacular organ in functional female zooids (Figs. 13 and 14) (
Hageman, 1981; R.L. Zimmer, pers. comm.). Hageman (1981) reported that this ...
Arthur Charles Giese, John S. Pearse, Vicki Pearse, 1974
10
Living and Fossil Bryozoa: Recent Advances in Research, ...
He has supposed that polypide replacement relates to the way in which
gymnolaematous Bryozoa release ova through a special intertentacular tube or
intertentacular pore. Borg suggested that the formation of an intertantacular
organ is ...
International Bryozoology Association, Gilbert Powell Larwood, 1973
