I experimentally test the hypothesis that the potential for selfing
increases with plant size in Mertensia ciliata (Boraginaceae), a self-compatible,
profusely-flowering perennial. This follows from the
premises that 1) pollen dispersal by pollinators between flowers is
limited, and 2) individual pollinators, in this study bumblebees, will
visit more flowers per...
The size, shape, and stability of a species’ dietary niche can both influence and reflect a variety of biological patterns, including species interactions, extinction risk, and ecosystem function. This is particularly apparent when dietary changes manifest at ecosystem and clade scales to profoundly affect macroecological and macroevolutionary trajectories. However, many...
The lack of a suitable demembranated cell model has hindered the
study of the mechanisms responsible for the regulation of ciliary
waveform and coordination. In this study procedures for the
isolation of ciliated cells from the newt, Taricha granulosa, by
trypsin dissociation, and their subsequent demembranation with Triton
X-100 and...
A method for isolating the salt gland (SG) from the larval brine
shrimp has been developed. This extra-renal organ is removed from 5-10%
of Stage Inauplii by vortexing after incubating the animals at 37°C for
8 hours in a saline solution buffered with 100 mM sodium phosphate at pH
7.6....
Dipterans of the family Ephydridae (shore and brine flies) are well
known for their ability to tolerate and thrive in a wide variety of
physically harsh circumstances. The immature stages of one such species
of this family, Ephydra hians, are characteristically limited in
distribution as benthic inhabitants of highly alkaline...
In Artemia salina nauplii acclimated in 0.25 M, 0.5 M, 1.0 M, 1.5 M,
2.0 M, and 2.5 M NaCl incorporation of ¹⁴CO₂ into free amino acids was
greatly stimulated in the higher salinities. The ¹⁴C label was found in
aspartic acid, serine, glutamic acid, proline and alanine.
Hypersalinity also...
The benefits of reproduction are clear, but there are also costs. Much is known about the costs of reproduction in females, but only recently have male costs been investigated in any depth. These costs of reproduction may be minimized by appropriately modifying behavior, but there has been little research on...