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Observationson the embryos of the longfin mako, Isurus paucus, and the bigeye thresher, Alopias superciliosus

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Date Issued:
1983
Title: Observationson the embryos of the longfin mako, Isurus paucus, and the bigeye thresher, Alopias superciliosus.
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Name(s): Gilmore, R. G.
Harbor Branch Oceanographic Institute
Type of Resource: text
Genre: Article
Date Issued: 1983
Publisher: American Society of Ichthyologists and Herpetologists.
Place of Publication: New York
Physical Form: pdf
Extent: 9 p.
Language(s): English
Identifier: FA00007105 (IID)
Note(s): Four embryos of Alopias superciliosus and one of lsurus paucus were dissected and examined along with the reproductive organs of adults captured in the Florida Current off the east-central coast of Florida between latitude 26°30'N and 28°30'N. The embryos were found to contain yolk, demonstrating prenatal nutrition through intrauterine oophagy. Various proportions of embryo anatomy considered diagnostic for these species resemble those of adults. The general gonad morphology and presence of egg capsules containing multiple ova resemble the described development stages of other lamnids, alopiids and Odontaspis taurus (Odontaspidae). This is the first documented observation of oophagy in these species.
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution 274
This manuscript is an author version with the final publication available and may be cited as: Gilmore, R. G. (1983). Observations on the embryos of the longfin mako, Isurus paucus, and the bigeye thresher, Alopias superciliosus. Copeia 2, 375-382.
Subject(s): Longfin mako
Isurus paucus
Alopias
Thresher sharks
Embryos
Persistent Link to This Record: http://purl.flvc.org/fau/fd/FA00007105
Host Institution: FAU