Meeting Abstract 36.1 Thursday, Jan. 5 Sex determination in a nematode that produces males, females and hermaphrodites PIRES DA SILVA, Andre; Univ. of Texas at Arlington, Arlington apires@uta.edu The evolution of mating systems has fascinated biologists since the time of Darwin, specifically the causes and consequences of a species transition from one mating system (e.g. dioecy) to […]
sessions: Session 36
Plasticity of lung development in frogs
Meeting Abstract 36.7 Thursday, Jan. 5 Plasticity of lung development in frogs ROSE, C.S.*; JAMES, B.; James Madison University rosecs@jmu.edu In contrast to previous attempts to raise frogs in normoxic water without access to air, we found that under such conditions Xenopus laevis tadpoles can routinely complete climax metamorphosis, albeit more slowly and with a higher percentage […]
Novel insights into stem cell activity and angiogenesis from an elasmobranch, Leucoraja erinacea
Meeting Abstract 36.9 Thursday, Jan. 5 Novel insights into stem cell activity and angiogenesis from an elasmobranch, Leucoraja erinacea MCLEOD, L; CACCIATORE, C; LUPICA, N; LUTTON, BV*; Endicott College; Endicott College; Endicott College; Endicott College blutton@endicott.edu In this study we introduce a unique model system that may provide novel insight into the complex bone marrow niche of […]
Mechanism underlying developmental plasticity in echinoid larval form
Meeting Abstract 36.2 Thursday, Jan. 5 Mechanism underlying developmental plasticity in echinoid larval form ADAMS, D.K.*; SEWELL, M.A.; NOWAKOWSKI, N.M.; ANGERER, L.M.; National Institutes of Health, Bethesda, MD; University of Auckland, NZ; American University, Washington, DC; National Institutes of Health, Bethesda, MD adamsdi@mail.nih.gov A mechanistic understanding of developmental plasticity is a key component to determining how phenotypic […]
Maternal size effects on reproduction and development in the mud snail, Ilyanassa obsoleta
Meeting Abstract 36.4 Thursday, Jan. 5 Maternal size effects on reproduction and development in the mud snail, Ilyanassa obsoleta SCHWAB, DB*; ALLEN, JD; College of William and Mary dbschwab@email.wm.edu A maternal effect occurs when the phenotype of an organism is influenced by the phenotype of its mother. When the maternal environment is an accurate predictor of the […]
Indian summer photoperiod alters thermally induced plasticity in life history and morphological traits
Meeting Abstract 36.3 Thursday, Jan. 5 Indian summer: photoperiod alters thermally induced plasticity in life history and morphological traits. HAHN, D.A.*; CLEMMENSEN, S.F.; University of Florida; University of Tennessee dahahn@ufl.edu It is well known that temperature can have substantial effects on morphological and life history traits, like body size and growth rates, especially in ectotherms. Photoperiod covaries […]
Hydraulic stress induced bubble nucleation and growth during pupal metamorphosis
Meeting Abstract 36.6 Thursday, Jan. 5 Hydraulic stress induced bubble nucleation and growth during pupal metamorphosis PRAKASH, Manu; Stanford University manup@stanford.edu Here I describe the role of physical fluid stress during pupal metamorphosis in flies. During early stages of pupation of larvae into adult flies, a physical gas bubble nucleates at a precise spatial and temporal location, as […]
Disruption of Developmental & Epigenetic Programs in Peromyscus Hybrids
Meeting Abstract 36.5 Thursday, Jan. 5 Disruption of Developmental & Epigenetic Programs in Peromyscus Hybrids VRANA, P.B.; University of South Carolina VRANAP@mailbox.sc.edu We use North American rodents of the genus Peromyscus (deer mice) to study the effects of natural genetic variation on epigenetic regulation and development. The P. maniculatus species complex is particularly widespread and varied, consisting […]
Developmental plasticity and the origin of novel forms Unveiling of cryptic genetic variation via ‘use and disuse’
Meeting Abstract 36.8 Thursday, Jan. 5 Developmental plasticity and the origin of novel forms: Unveiling of cryptic genetic variation via ‘use and disuse’ PALMER, A. Richard; University of Alberta rich.palmer@ualberta.ca Natural selection eliminates phenotypic variation from populations, generation after generation … an observation that haunted Darwin. So, how does new phenotypic variation arise, and is it always […]
Wave Energetics in Fiddler Crabs Variability in Signaling Investment
Meeting Abstract 36.5 Friday, Jan. 4 Wave Energetics in Fiddler Crabs: Variability in Signaling Investment DAVIS, M. J.*; SWANSON, B. O.; Gonzaga University; Gonzaga University mdavis6@zagmail.gonzaga.edu Fiddler crabs are a group of small, intertidal crustaceans that exhibit a high degree of sexual dimorphism. Male fiddler crabs are characterized by strong body asymmetry, as the large major claw […]
