In many animal species, males direct more intense courtship towards females they have not previously encountered,
than towards females with which they have previously mated. To test the factors responsible for this "Coolidge Effect", we need
studies on a wide range of taxa – including those with mating systems in...
We examined terrestrial amphibians in managed headwater forest stands in western Oregon from 1998 to 2009. We assessed: (1) temporal and spatial patterns of species capture rates, and movement patterns with distance from streams and forest management treatments of alternative riparian buffer widths and upland thinning; (2) species survival and...
RNA silencing is an evolutionarily conserved system that
functions as an antiviral mechanism in higher plants and
insects. To counteract RNA silencing, viruses express
silencing suppressors that interfere with both siRNA- and
microRNA-guided silencing pathways. We used comparative
in vitro and in vivo approaches to analyse the molecular
Morphologically divergent ecotypes arise in fish populations on postglacial time scales, and resource polymorphisms
are often invoked to explain their origin. However, genetic recombination can constrain the ability of divergent selection to produce
reproductive isolation in sympatry. Recombination breaks up favorable combinations of traits (”adaptive suites”) if individual
Nassau grouper Epinephelus striatus are a large bodied, top level predator that is ecologically important throughout
the Caribbean. Although typically solitary, Nassau grouper form large annual spawning aggregations at predictable times in specific
locations. In 2003, The Cayman Islands Marine Conservation Board established protection for a newly rediscovered Nassau
Recent reform initiatives in undergraduate biology call for curricula that prepare
students for dealing with real-world issues and making important links between
science and society. In response to this call, we have developed an issues-based
laboratory module that uses guided inquiry to integrate the concepts of animal
behavior and population...
Quantitative literacy is essential to biological literacy (and is one of the core concepts in Vision and Change in Undergraduate Biology Education: A Call to Action; AAAS 2009). Building quantitative literacy is a challenging endeavor for biology instructors. Integrating mathematical skills into biological investigations can help build quantitative literacy. In...
The famous geneticist and co-founder of the modern theory of evolution, Theodosius Dobzhansky, published an article in this journal in 1973 with the title "Nothing in Biology Makes Sense Except in the Light of Evolution" (Dobzhansky, 1973). In that article he responded to religious attacks on the theory and defended...
Excess fatty acids and sterols are stored as triacylglycerols and sterol esters in
specialized cellular organelles, called lipid droplets. Understanding what determines the cellular
amount of neutral lipids and their packaging into lipid droplets is of fundamental and
applied interest. Using two species of fission yeast, we show that cycling...
Mammalian cysteine dioxygenase (CDO) is a mononuclear non-heme iron protein that catalyzes 2 the conversion of cysteine (Cys) to cysteine sulfinic acid (CSA) by an unclarified mechanism. 3 One structural study revealed a Cys-persulfenate (or Cys-persulfenic acid) formed in the active 4 site, but quantum mechanical calculations have been used...
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