Research Library | Digital Repository

Ovarian morphology and early embryology of the pediculate fishes Antennarius and Histrio. Bulletin of the AMNH ; v. 114, article 4

Show simple item record Rasquin, Priscilla. en_US 2005-10-05T21:39:08Z 2005-10-05T21:39:08Z 1958 en_US
dc.description p. 331-371 [28] p. of plates : ill. ; 27 cm. en_US
dc.description Includes bibliographical references (p. 370-371). en_US
dc.description.abstract "The histo-morphology of the ovaries of the pediculates Histrio histrio, Antennarius scaber, and Ogcocephalus vespertilio is described. 2. The ovaries of all three species show similar characteristics: fusion of the two glands at their caudal ends, presence of ovigerous tissue on one side of the lumen only, and considerable quantities of smooth muscle in the walls. 3. The ovaries of Histrio and Antennarius consist of flattened sacs scrolled from the distal lateral tips ventrally towards the midline of fusion; the ovary of Ogcocephalus is scrolled along the longitudinal axis of each ovary, the long edges of the organ rolled ventrally. 4. The structure of the egg raft of Histrio is described. The mucoid material in which the ova are embedded is secreted by the epithelium lining the ovarian walls and covering the lamellae. At ovulation, the mucoid material is cast into the lumen along with the ova which have ruptured from the follicles. The form of the raft is a replica of the internal surfaces of the ovary. 5. Pores in the raft are formed by spaces caused by the junction of lamellae with the ovarian wall where no mucus-producing epithelium is present. When the raft is released, sea water enters the pores, presumably carrying sperm with it. Each ovum is then confined in its own mucoid-walled compartment, free to revolve in the sea water contained within the compartment. 6. The frequency of raft release by mature female Histrio was found to vary between once every three days and intervals of several weeks. 7. The explosive character of the release of the raft is discussed. The central portion of the raft, from the fused part of the ovary immediately above the oviduct, issues from the vent first, followed by the portion from one side of the ovary, followed in turn by the portion from the remaining side. The ovulation takes many hours to complete; the final release is affected by pressure of the mass within the ovary, contractions of the muscular ovarian wall, and contractions of the abdominal muscles. 8. A detailed description of the early embryology of Antennarius is given, with a short comparison with Histrio development. Development of these pelagic larvae shows several deviations from the classic pattern of vertebrate embryology. Up to the time of their death, nine days after having been spawned, the following features were noted to be lacking: vitelline circulation, hemoglobin and blood cells, and nephric tubules. No division of somites into somatopleure and splanchnopleure could be identified. No true proctodeum or stromadeum is developed, as there is no invagination of outside ectoderm in these areas. A simple slit appears in the outer covering. The yolk is absorbed by the liver. 9. The larvae possess large subdermal spaces and specialized structures in the outside ectoderm. The possible relationship of these structures to osmoregulatory functions is considered in the Discussion"--P. 369. en_US
dc.format.extent 47518480 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York : [American Museum of Natural History] en_US
dc.relation.ispartofseries Bulletin of the American Museum of Natural History ; v. 114, article 4 en_US
dc.subject.lcc QH1 .A4 vol.114, art.4, 1958 en_US
dc.subject.lcsh Antennarius. en_US
dc.subject.lcsh Histrio. en_US
dc.subject.lcsh Ovaries. en_US
dc.subject.lcsh Anglerfishes -- Morphology. en_US
dc.subject.lcsh Anglerfishes -- Embryology. en_US
dc.title Ovarian morphology and early embryology of the pediculate fishes Antennarius and Histrio. Bulletin of the AMNH ; v. 114, article 4 en_US
dc.title.alternative Morphology and embryology of fishes en_US
dc.type text en_US

Files in this item

This item appears in the following Collection(s)

  • Bulletin of the American Museum of Natural History
    The Bulletin, published continuously since 1881, consists of longer monographic volumes in the field of natural sciences relating to zoology, paleontology, and geology. Current numbers are published at irregular intervals. The Bulletin was originally a place to publish short papers, while longer works appeared in the Memoirs. However, in the 1920s, the Memoirs ceased and the Bulletin series began publishing longer papers. A new series, the Novitates , published short papers describing new forms.

Show simple item record

Search Entire Repository

Advanced Search


My Account