Woodard, A.*; Shardo, J.: Morphological changes associated with the development of feeding in red snapper (Lutjanus campechanus). The formation of a functional feeding apparatus in larval teleosts is a finely tuned, functionally integrated set of processes. We examined the formation of the feeding apparatus in the larval red snapper from hatching (22 hr postfertilization) through […]

Maglia, A.*; Buchholz, D.R.: Heterochrony and patterns of osteogenesis in pelobatoid frogs Change in developmental timing is commonly cited as the source of morphological evolution in anurans (and vertebrates in general). Despite the warnings of Fink (1982), very few studies suggesting heterochrony as the cause of variation in anuran morphology have tested their hypotheses in […]

DEAROLF, J.L.*; MCLELLAN, W.A.; PABST, D.A.; HERMANSON, J.W.: Diaphragm muscle development in bottlenose dolphins (Tursiops truncatus) Being born directly into an aquatic environment creates unique challenges for the breathing muscles of neonatal cetaceans. Not only must these muscles be active at the instant of birth to allow for gas exchange, but their activities must also […]

SMITH, M.H.; WILLIAMS, N.L.; STELLWAG, E.J.; SCEMAMA, J.L.*: Characterization of a novel Hox group gene 1 from Morone saxatilis Hox genes are transcription factors that control regional specification of tissues in developing embryos. Our laboratory is working toward the complete characterization of the Hox cluster genes from Morone saxitilis, a member of the order Perciformes. […]

ROMBACH, E.P.*; BARBOZA, P.S.; BLAKE, J.E.: Trace Mineral Reserves during Gestation in Muskoxen We studied a captive population of muskoxen (Ovibos moschatus) that experienced reduced growth and development of young (likely caused by copper, Cu, deficiency) to better understand stages of development where trace minerals are critical for survival of young. We examined the role […]

SCHONDUBE, J.E.*: Nectar digestion by flowerpiercers and hummingbirds Flowerpiercers and hummingbirds are the two most specialized groups of nectar feeding birds in the neotropics. Because species of both groups are syntopic and can even be found feeding on the same plants, they provide a unique opportunity to study how different taxa cope with a nectar […]

BARBOZA, P.S.; JORDE, D.G.: Male and female black ducks respond differently to intermittent feeding in winter Feeding is limited by predation and weather during winter, migration and breeding of black ducks (Anas rubripes). Restricted food intake can affect body composition, molt and egg production of waterfowl. We studied responses of captive birds to restricted feeding […]

CHEDIACK, J.G.; CAVIEDES-VIDAL, E.; KARASOV, W.H.: Intestinal passive absorption of hydrosoluble compounds is size dependent and modulated by luminal nutrients in house sparrows (Passer domesticus). We are characterizing the apparent paracellular permeability of the small intestine in intact birds. We previously found that L-glucose was substantial and enhanced by the presence of sugar in the […]

PIERCE, Barbara/J; MCWILLIAMS, Scott/R: Effects of Food Quality and Digestive Constraints on Recovery of Body Reserves in a Migratory Bird Small songbirds must regularly rest and refuel at stopover sites during migration, in part because they are unable to carry enough fuel reserves for long-distance, non-stop flights. Length of stay at a given stopover site […]

MCWILLIAMS, Scott R.*; KEARNEY, Shannon B. ; KARASOV, William H. : Diet preferences of warblers for specific fatty acids in relation to nutritional requirements and digestive capabilities. During energy-demanding periods of the annual cycle such as migration or during cold days in winter, birds store fat comprised mostly of 16- or 18-carbon unsaturated fatty acids. […]