Steinernema nematode (image) University of Illinois College of Agricultural, Consumer and Environmental Sciences Share Print E-Mail Caption A newly hatched Steinernema carpocapsae juvenile (shown here, scale bar 50 μm) is only about 0.25 mm (less than 1/100 of an inch) long with a gonad only 0.013 mm in length. During development, the worm will increase over 10 times in length (in comparison, the average human only increases about 4 fold in height from birth to adulthood) and its gonad increases almost 500 times in length. Credit Nathan Schroeder, University of Illinois. Usage Restrictions with attribution Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.