Imposex measurement in the dogwhelk Nucella lapillus (L.) - temporal aspects of specimen preparation

Authors
Minchin, A Davies, IM
Citation
A. Minchin et Im. Davies, Imposex measurement in the dogwhelk Nucella lapillus (L.) - temporal aspects of specimen preparation, J ENVIR MON, 1(3), 1999, pp. 239-241
Citations number
13
Categorie Soggetti
Environment/Ecology
Journal title
JOURNAL OF ENVIRONMENTAL MONITORING
ISSN journal
14640325 → ACNP
Volume
1
Issue
3
Year of publication
1999
Pages
239 - 241
Database
ISI
SICI code
1464-0325(199906)1:3<239:IMITDN>2.0.ZU;2-X
Abstract
The measurement of the Relative Penis Size Index (RPSI) in the dogwhelk Nuc ella lapillus (L.) depends upon reliable observations of the length of the penis (P-L). Following removal of soft tissue from the shell, P-L increases with time leading to a progressively greater over-estimation of the RPSI. The error is proportionally greater at low RPSI values. To retain comparabi lity with previous data, it is suggested that dogwhelks should be examined as soon as possible after shell crushing.