CULLEN, M. F.*; HARRINGTON, S. T.; KAUFMANN, R. S. ; LOWERY, M. S.: Seasonal Changes in Physiological Status of Antarctic Krill, Euphausia superba, from Deception Island, Antarctica Seasonal changes in biochemical indicators of physiological status were analyzed in abdominal muscle of the Antarctic krill, Euphausia superba, collected from Port Foster, Deception Island, in the South […]

TOWNSEND, K.; SPANINGS-PIERROT, C.; HARTLINE, D.K.; KING, S.; HENRY, R.P.; TOWLE, D.W.: Salinity-Related Changes in Crustacean Hyperglycemic Hormone (CHH) mRNA in Pericardial Organs of the Shore Crab Carcinus maenas CHH stimulates sodium influx in isolated gills of the crab Pachygrapsus marmoratus, reaching maximum stimulation within 10 minutes (Spanings-Pierrot et al., Gen. Comp. Endocrinol. 119: 340-350, […]

HEAD, J.M.*; PEQUEUX, A.: Salinity and temperature effects on Na+/K+-ATPase and cytochrome c oxidase activity in the gills of Eriocheir sinensis. Eriocheir sinensis is exposed to wide variations in temperature and salinity. The effects that they have on the gill function of E. sinensis play a major role in determining the crab’s distribution and success. […]

DEATON, L.E.: Response of Bivalve Ventricles to 5HT and FMRFamide: Effects of Protein Kinase Inhibitors Cardiac output in bivalves is controlled by the actions of neurotransmitters and neurohormones. These agents include 5-hydroxytryptamine (5HT), acetylcholine (Ach) and Phe-Met-Arg-Phe-NH2(FMRFamide). 5HT and FMRFamide are cardioexcitatory in some bivalve species and inhibitory in others. The cellular mechanisms that are […]

TSUIHIJI, T.: Primary homologies of cervical muscles in avian and non-avian diapsids Homologies of the cervical muscles in birds and other diapsids have yet to be clearly established due mainly to the highly derived cervical morphology of birds and to different nomenclatures developed for avian and non-avian diapsids. The axial muscles attaching on the lateral […]

HOOGE, M.D.*; HAYE, P.A.; KORNFIELD, I.; LITVAITIS, M.K.; TYLER, S.: Phylogenetic relationships within the Acoela (Acoelomorpha, Platyhelminthes) inferred from 18S rDNA sequences We used newly obtained nuclear 18S rDNA sequences from 18 acoels in combination with sequences obtained from Genbank to create a dataset representing 10 acoel families, in which over 90% of the described […]

SCHACHAT, Fred; BRIGGS, Margaret: Phylogenetic implications of the superfast myosin in extraocular muscles Extraocular muscle (EOM) exhibits higher velocity and lower tension contractions than other vertebrate striated muscles. These distinctive physiological properties are associated with the expression of a novel extraocular myosin heavy chain (MYH). Encoded by the MYH13 gene, the extraocular myosin heavy chain […]

STORZ, Shonna R.: Phylogenetic analysis of socially parasitic paper wasps (Hymenoptera: Vespidae) Social parasites utilize workers of a host species to rear their own progeny. Emery’s rule argues that social parasites are most closely related to their hosts than to non-hosts. Researchers have investigated the evolutionary origin of social parasites in paper wasps using a […]

DALY, M: Phylogenetic Systematics of the Edwardsiidae (Cnidaria: Anthozoa) This study aims to evaluate the competing hypotheses for the evolution of the Edwardsiidae, and to redescribe and revise the genera within the Edwardsiidae. The results of these two investigations provide a way to explore assumptions about the utility and performance of different kinds of characters […]

CASON, E.M.; FARRAR, E.S.; VLECK, D: Passage time through anuran larval intestines Algae and diatoms are passed through the intestine of anuran larvae and remain relatively unscathed. They are in such good condition that they can be identified to species. This provokes questions about tadpole digestive mechanisms and efficiency. As an initial step toward investigating […]