Potential for bias in using hybrids between common carp (Cyprinus carpio) and goldfish (Carassius auratus) in endocrine studies: a first report of hybrids in Lake Mead, Nevada, U.S.A

American Midland Naturalist
By: , and 

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Abstract

During a 2008 study to assess endocrine and reproductive health of common carp (Cyprinus carpio) in Lake Mead, Nevada (U.S.A.) we identified two fish, one male and one female, as hybrids with goldfish (Carassius auratus) based on morphology, lateral line scale count, and lack of anterior barbels. Gross examination of the female hybrid ovaries indicated presence of vitellogenic ovarian follicles; whereas histological evaluation of the male hybrid testes showed lobule-like structures with open lumens but without germ cells, suggesting it was sterile. Because common carp/goldfish hybrids are more susceptible to gonadal tumors and may have different endocrine profiles than common carp, researchers using common carp as a model for endocrine/reproductive studies should be aware of the possible presence of hybrids.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Potential for bias in using hybrids between common carp (Cyprinus carpio) and goldfish (Carassius auratus) in endocrine studies: a first report of hybrids in Lake Mead, Nevada, U.S.A
Series title American Midland Naturalist
DOI 10.1674/0003-0031-169.2.426
Volume 169
Issue 2
Year Published 2013
Language English
Publisher University of Notre Dame
Contributing office(s) Coop Res Unit Atlanta
Description 6 p.
First page 426
Last page 431
Country United States
State Nevada
Other Geospatial Lake Mead
Online Only (Y/N) N
Additional Online Files (Y/N) N