Intraspecific variability in Antarctic tintinnids: the Cymatocylis affinis/convallaria species group |
| |
| Authors: | Boltovskoy Demetrio; Dinofrio Estela O; Alder Viviana A |
| |
| Institution: | 1Departamento de Ciencias Biol?gicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires 1428 Buenos Aires and CONICET
2lnstituto Ant?rtico Argentino Cerrito 1248,1010 Buenos Aires, Argentina |
| |
| Abstract: | Analyses of the morphometry of 630 loricae belonging to thedescribed species Cymatocylis affinis and Cymatocylis convallariaretrieved from 21 samples collected in the Weddel Sea (6O–73?S)strongly suggest that both taxa, including the four formae intowhich C.affinis was originally divided, are members of a singlespecies. The only feature which varies significantly and consistentlyamong the samples surveyed is the total length of the lorica,lowest average lengths being positively correlated with lowestabsolute abundances of this tintinnid in the waters sampled.This relationship points to some unfavorable factor(s) whichaffects both tintinnid reproduction/ survival and growth; thedata analysed suggest that drops in the availability of foodmight be responsible for the size (and abundance) variationsobserved. |
| |
| Keywords: | |
| 本文献已被 Oxford 等数据库收录！ |
|
