Browsing Biological Sciences by Title
Now showing items 48-67 of 121
Genetic differentiation, structure, and a transition zone among populations of the pitcher plant moth Exyra semicrocea: implications for conservation
(2019-05-10)
Pitcher plant bogs, or carnivorous plant wetlands, have experienced extensive habitat loss and fragmentation throughout the southeastern United States Coastal Plain, resulting in an estimated reduction to <3% of their ...
Genetic population structure of an anchialine shrimp, Metabetaeus lohena (Crustacea: Alpheidae), in the Hawaiian Islands
(2019-07-15)
Anchialine habitats in the Hawaiian Islands, characterized as coastal bodies of land-locked salt or brackish water that fluctuate with the tides due to subterranean connections, are the only ecosystems of this type found ...
Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single-nucleotide polymorphism data
(2019-04-29)
Marine systems have traditionally been thought of as "open" with few barriers to gene flow. In particular, many marine organisms in the Southern Ocean purportedly possess circumpolar distributions that have rarely been ...
Hard and Soft Anatomy in Two Genera of Dondersiidae (Mollusca, Aplacophora, Solenogastres)
(2020-02-26)
Phylogenetic relationships and identifications
in the aplacophoran taxon Solenogastres (Neomeniomorpha)
are in flux largely because descriptions of hard parts––
sclerites, radulae, copulatory spicules––and body shape
have ...
Heat-induced maternal effects shapes avian eggshell traits and embryo response to high temperatures
(2021-03-29)
Populations without a sufficient rate of genetic adaptation may risk extinction in the face of rapid environmental change, however, phenotypic plasticity can facilitate their persistence. For example, mothers can prepare ...
Hemichordate Molecular Phylogeny Reveals a Novel Cold-Water Clade of Harrimaniid Acorn Worms
(2022-03-04)
Hemichordates are instrumental to understanding early deuterostome and chordate evolution, yet diversity and relationships within the group have been understudied. Recently, there has been renewed interest in hemichordate ...
High activity before breeding improves reproductive performance by enhancing mitochondrial function and biogenesis
(2022-03-13)
Understanding of physiological responses of organisms is typically based on data collected during an isolated event. Although many fundamental insights have been gained from these studies, evaluating the response to a ...
High-Throughput Sequencing Characterizes Intertidal Meiofaunal Communities in Northern Gulf of Mexico (Dauphin Island and Mobile Bay, Alabama)
(2019-12-20)
Abstract. Meiofauna are important components of food webs and for nutrient exchange between the benthos and water column. Recent studies have focused on these communities in the Gulf of Mexico due to potential impacts of ...
Host preference and habitat segregation among Red Sea anemonefish: effects of sea anemone traits and fish life stages
(2022-03-04)
Competition drives habitat segregation between adults and juveniles in many types of organisms, but little is known about this process in anemonefish that compete for host sea anemones which differ in habitat quality. We ...
Images of natural comb
(2021-04-10)
An in vivo test of the biologically relevant roles of carotenoids as antioxidants in animals
(2022-03-13)
Carotenoids are well known for their contribution to the vibrant coloration of many animals and have been hypothesized to be important antioxidants. Surprisingly few examples of carotenoids acting as biologically relevant ...
Increased cellular free cholesterol in macrophage-specific Abca1 knock-out mice enhances pro-inflammatory response of macrophages
(2021-03-23)
Macrophage-specific Abca1 knock-out (Abca1(-M/-M)) mice were generated to determine the role of macrophage ABCA1 expression in plasma lipoprotein concentrations and the innate immune response of macrophages. Plasma lipid ...
Indirect Impacts of Recreational Scuba Diving: Patterns of Growth and Predation in Branching Stony Corals
(2021-01-27)
The highest recorded rates of recreational SCUBA diving occur on coral reefs
at Eilat in the northern Red Sea, where many scleractinian corals are damaged by
physical contact with divers. We compared coral skeletal growth ...
The influence of maternal nesting behaviour on offspring survival: evidence from correlational and cross-fostering studies
(2019-04-22)
The maternal effect of nesting behaviour is important in oviparous species because choice of microhabitat (e.g. shade cover, temperature) can determine the environment in which embryos develop. In turn, this maternal choice ...
Interspecific combat observed among viperid snakes
(2019-10-22)
Is Pairing with a Relative Heritable? Estimating Female and Male Genetic Contributions to the Degree of Biparental Inbreeding in Song Sparrows (Melospiza melodia)
(2021-07-29)
The degree of inbreeding expressed within populations can profoundly shape evolutionary dynamics. The degree to which individuals inbreed is frequently assumed to evolve in response to selection, for example, resulting ...
Landscape-level influences of terrestrial snake occupancy within the southeastern United States
(2020-04-02)
Habitat loss and degradation are thought to be the primary drivers of species
extirpations, but for many species we have little information regarding specific habitats that
influence occupancy. Snakes are of conservation ...
Life History Aspects of Exyra semicrocea (Pitcher Plant Moth) (Lepidoptera: Noctuidae)
(2022-03-03)
With as little as 3% of southeastern Coastal Plain pitcher plant bogs remaining, it is important to understand the life-history aspects of the endemic organisms that
comprise this community. In this study, we elucidate ...