JOZEFOWICZ, C.J.*; MCCLINTOCK, J.M.; PRINCE, V.E.: Duplication and evolution of vertebrate Hox genes: hoxa1a and orthologs In all metazoan species in which it has been investigated, Hox genes are arranged in clusters, with invertebrates having a single cluster and vertebrates having a minimum of 4 clusters. The four cluster organization, until recently thought typical for […]

MCEDWARD, L.R.*; MINER, B.G.: Diversity and evolution of larval patterns in ophiuroid echinoderms Ophiuroids have three larval types: ophiopluteus, vitellaria, and doliolaria, as well as direct developing mesogens. There are four developmental patterns : planktotrophy, pelagic lecithotrophy, benthic lecithotrophy, and direct development. Lecithotrophic development is phylogenetically widespread and occurs in more families (10 of 11) […]

MINER, B.G*; MCEDWARD, L.R.: Diversity and evolution of larval patterns in holothuroid echinoderms Larval types and developmental patterns have been well studied in the echinoderm classes, asteroids and echinoids. In contrast, the other classes of echinoderms, crinoids, holothuroids, and ophiuroids, have been ignored. We have reviewed the literature on 69 species of holothuroids focusing on […]

WRIGHT, M.L.*; DUFFY, J.L.; GUERTIN, C.J.; SZATKOWSKI, M.C.: Diurnal profiles of adrenal cortical steroids in the plasma of bullfrog (Rana catesbeiana) tadpoles. Adrenal cortical steroids may potentiate the action of the thyroid hormones (TH) in metamorphosis. The level of these hormones in bullfrog tadpole plasma has been determined at various metamorphic stages but the diurnal […]

ASAY, M.J.*; BOYD, S.K.: Distribution of arginine vasotocin in the brain of a non-vocalizing anuran (Ascaphus truei) Tailed frogs (Ascaphus truei) are endemic to the Pacific Northwest and are considered the most primitive extant anuran. In addition, unlike most anurans, they do not vocalize. Arginine vasotocin (AVT) is a neuropeptide that modulates many amphibian reproductive […]

ROIG-LOPEZ, J.L.*; SANTIAGO, P.; NIEVES, L.; JIMENEZ, B.; GARCIA-ARRARAS, J.E.: Differential expression of actin isoforms during intestinal regeneration in the sea cucumber Holothuria glaberrima. The regeneration capability of echinoderms is well known, however, few studies have focused on the cellular and molecular events underlying this phenomenon. We are using the sea cucumber Holothuria glaberrima as […]

LARSON, E.T.*; WINBERG, S.; BROWN, C.L.; LARHAMMAR, D.: Differences in distribution of NPY and NPY receptors in a sex changing fish. Saddleback wrasse (Thalassoma duperrey) a protogynous sex-changing fish from the Hawaiian Islands, have behavioral differences based on sex and social roles. Dominant, territorial terminal phase (TP) males can develop from either females or initial […]

GRINDSTAFF, J.L.: Dietary protein restriction does not suppress humoral immune function or maternal antibody transfer in Japanese quail (Coturnix coturnix japonica) The ability to resist infection is an important component of survival and lifetime reproductive success. Many current theories in ecological immunology assume that mounting and maintaining an immunological defense is energetically costly and nutritional […]

Park, S.C.*; Cho, S.J.; Lee, M.S.; Cho, P.Y.; Koh, K. S.: Developmental Changes of Blastema and Proteinase Activities during Earthworm Tail Regeneration Developmental Changes of Blastema and Proteinase Activities during Earthworm Tail Regeneration Sung Jin Cho, Myung Sik Lee, Pyo Hyun Cho and Soon Cheol Park Department of Life Science, Chung-Ang University, Seoul 156-756, Korea […]

ZIVKOVIC, B.D.*; STEELE, C.T.; UNDERWOOD, H.; SIOPES, T.: Critical photoperiod and reproduction in female Japanese quail: Role of the eyes and pineal A previous study showed that removal of the eyes did not alter the stimulatory effect of a long (e.g., LD 14:10) photoperiod on the reproductive response of female Japanese quail. The reproductive response […]