In echinoderms with obligately
planktotrophic larvae, the ectoderm/endoderm boundary is located below the third cleavage plane at the equator of the embryo (Fig.
Ferric iron can be used as a terminal electron acceptor during the oxidation of organic C by several obligately
anaerobic bacteria, such as Geobacter metallireducens (Ghiorse, 1994).
Korea Research Institute of Bioscience and Biotechnology (Taejon-si, South Korea) has patented a novel obligately
symbiotic thermophile Symbiobacterium toebii SC-1(Accession NO: KCTC 0685BP), and a thermostable L-tyrosine phenol-lyase and L-tryptophan indole-lyase produced by Symbiobacterium toebii SC-1.
Normally, ground-foraging ants collect insects from the leaf litter and ants are not obligately
dependent on myrmecochory, but adding the food resource of elaiosomes can increase a nest's production of gynes (virgin queens) (Morales and Heithaus 1998).
BYDV is a phloem-restricted Luteovirus obligately
vectored by several species of aphids (Kolb et al.
but is more obligately
restricted to calcareous substrates, has a densely white pruinose upper cortex, and lacks zeorin.
Nitrifying bacteria, which are obligately
aerobic, are also an important source of [N.
As a control for this experiment, we employed an obligately
parthenogenetic lineage of D.
1994) and a group of ants obligately
associated with these host trees.
The lizard genus Cnemidophorus includes a number of all-female, obligately
parthenogenetic species (Wright 1993).
Rocky Mountain spotted fever (RMSF) is caused by Rickettsia rickettsii, a small gram-negative bacillus that is an obligately
By that point, he notes, conditions should have turned ideal "for the growth of the obligately
anaerobic sulfate-reducing bacteria, with all the attendant problems of sulfide production and corrosion.