Translator Disclaimer
18 September 2017 Life History, Growth, Survival, and Secondary Production of Ancyronyx variegatus (Germar, 1824) (Coleoptera: Elmidae) in Elk Creek, Erie County, Pennsylvania, USA
Author Affiliations +
Abstract
Larvae and adults of Ancyronyx variegatus (Germar, 1824) were collected monthly from Elk Creek, Erie County, Pennsylvania, USA. Ancyronyx variegatus has a univoltine life cycle with six instars. Primary recruitment months were April, May, and June, and adults were present throughout the year. The annual secondary production of A. variegata in Elk Creek was 0.55784 g/m2/yr. The mean standing stock biomass was 0.14296 g/m2, and the cohort production/biomass ratio was 3.902. The estimate of secondary production is important because it combines individual growth and population survivorship into a single measurement, which leads to a better understanding of the ecological importance of A. variegatus in the wood-dwelling aquatic insect community.
and Edward C. Phillips "Life History, Growth, Survival, and Secondary Production of Ancyronyx variegatus (Germar, 1824) (Coleoptera: Elmidae) in Elk Creek, Erie County, Pennsylvania, USA," The Coleopterists Bulletin 71(3), (18 September 2017). https://doi.org/10.1649/0010-065X-71.3.627
Received: 27 September 2016; Accepted: 1 June 2017; Published: 18 September 2017
JOURNAL ARTICLE
4 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top