TY - JOUR
T1 - Sexual dimorphism in plains minnow, Hybognathus placitus
AU - Ostrand, Kenneth G.
AU - Wilde, Gene R.
AU - Strauss, Richard E.
AU - Young, Randy R.
N1 - Funding Information:
1Cruces University Hospital (UPV/EHU), BioCruces Health Research Institute, Vizcaya, Spain; 2Fetal Medicine Unit, St George’s University Hospitals NHS Foundation Trust, University of London, London, UK; 3Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George’s University of London, London, UK; 4Formerly of the University of California, Irvine, Orange, CA, USA; 5Department of Obstetrics, Jena University Hospital, Jena, Germany; 6Department of Obstetrics and Gynecology, University Hospital, Inselspital, University of Bern, Bern, Switzerland
PY - 2001/5/1
Y1 - 2001/5/1
N2 - Hybognathus placitus collected from several west Texas streams exhibit sexual dimorphism in body form, which is unusual in cyprinids. Seventeen morphological measurements, including standard length, were made on 62 specimens and analyzed for sexual dimorphism. Partial warp scores were used to describe sexual dimorphism in body shape. There was no difference in standard length between males and females (ANOVA, P = 0.9038, F1,60 = 0.0147), but there was a highly significant (MANOVA, F1,60 = 4.78, P < 0.001) sexual dimorphism in body shape. Overall, males have relatively longer first dorsal fin rays, larger heads, and caudal peduncles, whereas females are deeper bodied and have relatively longer trunks, from the pelvic fin insertion to the anal vent. Differences between male and female H. placitus in length of the first dorsal fin ray are readily apparent and can potentially be used for field identification.
AB - Hybognathus placitus collected from several west Texas streams exhibit sexual dimorphism in body form, which is unusual in cyprinids. Seventeen morphological measurements, including standard length, were made on 62 specimens and analyzed for sexual dimorphism. Partial warp scores were used to describe sexual dimorphism in body shape. There was no difference in standard length between males and females (ANOVA, P = 0.9038, F1,60 = 0.0147), but there was a highly significant (MANOVA, F1,60 = 4.78, P < 0.001) sexual dimorphism in body shape. Overall, males have relatively longer first dorsal fin rays, larger heads, and caudal peduncles, whereas females are deeper bodied and have relatively longer trunks, from the pelvic fin insertion to the anal vent. Differences between male and female H. placitus in length of the first dorsal fin ray are readily apparent and can potentially be used for field identification.
UR - http://www.scopus.com/inward/record.url?scp=0035341029&partnerID=8YFLogxK
U2 - 10.1643/0045-8511(2001)001[0563:SDIPMH]2.0.CO;2
DO - 10.1643/0045-8511(2001)001[0563:SDIPMH]2.0.CO;2
M3 - Article
AN - SCOPUS:0035341029
SN - 0045-8511
SP - 563
EP - 565
JO - Copeia
JF - Copeia
IS - 2
ER -