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Biological Sciences: Recent submissions

Now showing items 21-40 of 53

Does season-dependent reproductive value of offspring drive the evolution of life-history traits in Anolis lizards? 

Hall, Joshua M; Mitchell, Timothy S; Tiatragul, Sarin; Pearson, Phillip R; Warner, Daniel A; http://orcid.org/0000-0002-5587-3402 (2019-09-15)
An important component of the reproductive strategy of many animals involves a seasonal shift in reproductive traits (i.e., clutch size, egg quality). Such shifts typically occur because environmental factors that influence ...

Embryological development and global change: how do reptile embryos respond to thermal stress in urban environments? 

Hall, Joshua M; Warner, Daniel A; http://orcid.org/0000-0002-5587-3402 (2019-09-15)
Two components of global change, climate change and urbanization, both contribute to increased ambient temperatures that may induce heat stress or mortality in animals. Each phenomenon independently results in both increased ...

Embryo development and global change: how do reptile embryos respond to ecologically relevant thermal stress? 

Hall, Joshua M; Warner, Daniel A; http://orcid.org/0000-0002-5587-3402 (2019-09-15)
Two components of global change, climate change and urbanization, both contribute to increased ambient temperatures that may induce heat stress or mortality in animals. Each phenomenon independently results in both increased ...

Embryo development and global change: how do reptile embryos respond to ecologically relevant thermal stress? 

Hall, Joshua M; Warner, Daniel A; http://orcid.org/0000-0002-5587-3402 (2019-09-15)
Two components of global change, climate change and urbanization, contribute to increased ambient temperatures that cause heat stress or mortality in animals. Many animals can respond to harmful temperatures behaviorally; ...

Constantly fluctuating in an inconsistent way: comparing the effects of sinusoidal and naturally fluctuating incubation temperatures on embryo development 

Hall, Joshua M; Warner, Daniel A; http://orcid.org/0000-0002-5587-3402 (2019-09-15)
Temperature is a commonly studied environmental factor influencing embryo development in oviparous ectotherms. Though most studies use constant temperature incubation conditions, researchers are aware of the effects of ...

Lizard embryos prioritize post-hatching energy reserves over increased hatchling body size during development 

Murphy, Kaitlyn M; Radder, Rajkumar S; Shine, Rick; Warner, Daniel A; https://orcid.org/0000-0001-7516-6783 (2019-09-09)
Embryonic development in oviparous organisms is fueled by maternally-allocated yolk, with many organisms hatching before that energy store is completely used up; the resultant leftover (residual) yolk is internalized and ...

Data for: Thermal tolerance in the urban heat island: Thermal sensitivity varies ontogenetically and differs between embryos of two sympatric ectotherms 

Hall, Joshua M; Warner, Daniel A; http://orcid.org/0000-0002-5587-3402 (2019-09-09)
Most studies of thermal tolerance use adults, but early-life stages (e.g. embryos) are often more sensitive to thermal agitation. Studies that examine effects on embryos rarely assess the potential for thermal tolerance ...

The players in a mutualistic symbiosis: insects, bacteria, viruses, and virulence genes 

Moran, Nancy A; Degnan, Patrick H; Santos, Scott R; Dunbar, Helen E; Ochman, Howard (2019-08-08)
Aphids maintain mutualistic symbioses involving consortia of coinherited organisms. All possess a primary endosymbiont, Buchnera, which compensates for dietary deficiencies; many also contain secondary symbionts, such as ...

Osmoregulation in the Hawaiian anchialine shrimp Halocaridina rubra (Crustacea: Atyidae): expression of ion transporters, mitochondria-rich cell proliferation and hemolymph osmolality during salinity transfers 

Havird, Justin C; Santos, Scott R; Henry, Raymond P (2019-08-08)
Studies of euryhaline crustaceans have identified conserved osmoregulatory adaptions allowing hyper-osmoregulation in dilute waters. However, previous studies have mainly examined decapod brachyurans with marine ancestries ...

Enhancing Diversity in Undergraduate Science: Self-Efficacy Drives Performance Gains with Active Learning 

Ballen, Cissy J.; Wieman, Carl; Salehi, Shima; Searle, Jeremy B.; Zamudio, Kelly R.; 0000-0002-4693-6117 (2019-08-07)
Efforts to retain underrepresented minority (URM) students in science, technology, engineering, and mathematics (STEM) have shown only limited success in higher education, due in part to a persistent achievement gap between ...

Physiological consequences of an altered flow regime on Alabama bass (Micropterus henshalli) 

Earley, Laurie A.; Sammons, Steven M.; Mendonca, Mary T.; Johnston, Carol J.; 0000-0003-0916-9024 (2019-08-06)
There are numerous studies on the effects of dams on aquatic biota, yet relatively little is known about whether hydropeaking activities cause physiological change in fish. Using Alabama bass (Micropterus henshalli) as a ...

The Adaptive Bleaching Hypothesis: Experimental Tests of Critical Assumptions 

Kinzie, R. A; Takayama, M; Santos, S.R; Coffroth, M. A. (2019-08-02)
Coral bleaching, the loss of color due to loss of symbiotic zooxanthellae or their pigment, appears to be increasing in intensity and geographic extent, perhaps related to increasing sea surface temperatures. The adaptive ...

Molecular genetic evidence that dinoflagellates belonging to the genus Symbiodinium freudenthal are haploid 

Santos, Scott R; Coffroth, Mary Alice (2019-08-02)
Microscopic and cytological evidence suggest that many dinoflagellates possess a haploid nuclear phase. However, the ploidy of a number of dinoflagellates remains unknown, and molecular genetic support for haploidy in this ...

Multiple colonizations lead to cryptic biodiversity in an island ecosystem: comparative phylogeography of anchialine shrimp species in the Ryukyu Archipelago, Japan 

Weese, David A; Fujita, Yoshihisa; Santos, Scott R (2019-08-02)
Archipelagos of the Indo-West Pacific are considered to be among the richest in the world in biodiversity, and phylogeographic studies generally support either the center of origin or the center of accumulation hypothesis ...

Reproduction and development in Halocaridina rubra Holthuis, 1963 (Crustacea: Atyidae) clarifies larval ecology in the Hawaiian anchialine ecosystem 

Havird, Justin C; Vaught, Rebecca C; Weese, David A; Santos, Scott R (2019-08-01)
Larvae in aquatic habitats often develop in environments different from those they inhabit as adults. Shrimp in the Atyidae exemplify this trend, as larvae of many species require salt or brackish water for development, ...

Crossing the Divide: Admixture Across the Antarctic Polar Front Revealed by the Brittle Star Astrotoma agassizii 

Galaska, Matthew P; Sands, Chester J; Santos, Scott R; Mahon, Andrew R; Halanych, Kenneth M (2019-07-31)
The Antarctic Polar Front (APF) is one of the most well-defined and persistent oceanographic features on the planet and serves as a barrier to dispersal between the Southern Ocean and lower latitudes. High levels of endemism ...

Genetic population structure of an anchialine shrimp, Metabetaeus lohena (Crustacea: Alpheidae), in the Hawaiian Islands 

Russ, Atlantis; Santos, Scott R; Muir, C (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 ...

Do Small Classes in Higher Education Reduce Performance Gaps in STEM? 

Ballen, Cissy; Aguillon, Stefanie; Brunelli, Rebecca; Drake, Abby Grace; Wassenberg, Deena; Weiss, Stacey; Zamudio, Kelly; Cotner, Sehoya (2019-07-11)
Performance gaps in science are well documented, and an examination of underlying mechanisms that lead to underperformance and attrition of women and underrepresented minorities (URM) may offer highly targeted means to ...

Reef endemism, host specificity and temporal stability in populations of symbiotic dinoflagellates from two ecologically dominant Caribbean corals 

Thornhill, Daniel J; Xiang, Yu; Fitt, William K; Santos, Scott R (2019-07-01)
BACKGROUND: The dinoflagellate genus Symbiodinium forms symbioses with numerous protistan and invertebrate metazoan hosts. However, few data on symbiont genetic structure are available, hindering predictions of how these ...