Now showing items 11-20 of 122
Data subset selection by Boolean calculation
(Elsevier, 1984-11)
In this journal in 1969 the authors described an unconventional method, based on concepts from systematic biology, for storing and retrieving data, whose salient features are: (1) data are stored in such a manner that the ...
Palearctic predator invades North American Great Lakes
(Springer-Verlag, 1987-12)
Bythotrephes cederstroemii Schoedler, a predatory freshwater zooplankter (Crustacea: Cladocera), was first found in the Laurentian Great Lakes in December 1984. The first individuals were from Lake Huron, followed in 1985 ...
Carbon-isotope discrimination by leaves of Flaveria species exhibiting different amounts of C 3 -and C 4 -cycle co-function
(Springer-Verlag, 1988-05)
Carbon-isotope ratios were examined as δ 13 C values in several C 3 , C 4 , and C 3 −C 4 Flaveria species, and compared to predicted δ 13 C, values generated from theoretical models. The measured δ 13 C values were within ...
An ecologically-based approach to the design of intercrop agroecosystems: An intercropping system of soybeans and tomatoes in Southern Michigan
(Elsevier, 1984-10)
A model is developed in which the elementary structure of plant competision is translated into the classical yield-density equation. Using the same reasoning, an interspecific form of the model is formulated to predict ...
The systematic position of the genus Chirobia Fain, 1959 (Astigmata: Sarcoptidae) with a description of Chirobia harpyionycteris n. sp. from the Old World fruit bat Harpyionycteris whiteheadi (Chiroptera: Pteropodidae)
(Kluwer Academic Publishers; Dr W. Junk Publishers ; Springer Science+Business Media, 1987-04)
A new species of Chirobia Fain, 1959, C. harpyionycteris n. sp., parasitic on the Old World fruit bat Harpyionycteris whiteheadi (Chiroptera: Pteropodidae) is described and illustrated, with notes on its ecology. The ...
The 5S ribosomal RNA gene clusters in Tetrahymena thermophila : strain differences, chromosomal localization, and loss during micronuclear ageing
(Springer-Verlag, 1984-11)
The organization of the 5S genes in the genome of Tetrahymena thermophila was examined in various strains, with germinal ageing, and the 5S gene clusters were mapped to the MIC chromosomes. When MIC or MAC DNA is cut with ...
Effects of surfactants, pH, and certain cations on precipitation of proteins by tannins
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1985-04)
Tannic acid and pin oak tannins precipitate large amounts of the abundant leaf protein, ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPC), over a wide pH range (6.15–9.30) in the presence of sodium, potassium, ...
Mating success of male hermit crabs in shell generalist and shell specialist species
(Springer-Verlag, 1989-08)
The reproductive behavior of two species of diogenid hermit crabs was studied in Hawaii. In the shell generalist, Clibanarius zebra , male reproductive success varied little with size, although the largest males were less ...
Communication and mutual resource exchange in north Florida hermit crabs
(Springer-Verlag, 1980-09)
The patterns of shell exchange in three species of hermit crabs which overlap in distribution and shell use were observed in the laboratory. Crabs showed no tendency to initiate more exchanges with conspecifics as compared ...
Antennal sensilla of Magicicada cassini (fisher) (Homoptera : Cicadidae): Fine structure and electrophysiological evidence for olfaction
(Elsevier, 1988-04)
The antennae of Magicicada cassini (Homoptera : Cicadidae) (3-4 mm long) look similar in both sexes and consist of scape, pedicel, and a 5-segmented flagellum. The length of flagellar segment 1 varies independently in ...