title: Dependence between volumes of protoplast and lorica in lugol-fixed tintinnid ciliates.
abstract: The relationship between the volume of tintinnid loricae and protoplasts was studied on the basis of bulk data derived from samples collected in a range of temperate environments: riverine, lacustrine, estuarine, and marine. All organisms were fixed with acid Lugol solution (0.5-1.0%). The dependence was described with the allometric equation: VL=2.74×VP(1.03), where VL and VP are volumes [μm(3)] of loricae and protoplasts, respectively. The dependence was highly significant (p<0.001, n=417, R(2)=0.85). On average, protoplasts occupied 31% of the lorica volume. One species, Helicostomella subulata,was omitted from the calculations and treated separately since this ciliate has a relatively large lorica. The relationship identified between lorica and protoplast volumes permits recalculating incomplete data if protoplasts are the only body part measured.
authors.affiliation: Department of Aquatic Ecology, Institute of Biology and Environmental Protection, Pomeranian University in Słupsk, Poland. krychert@wp.pl
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Rychert
mesh_terms: D048429:Cell Size; D016798:Ciliophora / Q000737:chemistry / Q000166:cytology*; D004777:Environment; D007454:Iodides / Q000737:chemistry; D011523:Protoplasts / Q000737:chemistry / Q000166:cytology*
chemical_list: D007454:Iodides; C010389:Lugol's solution