Results 131 to 140 of about 664 (149)
Journal of Freshwater Ecology, 2005 ABSTRACT The leech, Desserobdella picta is reported for the first time from Nebraska. We found D. picta on five species of amphibians (larvae Ambystoma tigrinum mavortium, tadpoles of Bufo woodhousii, Rana blairi, and R. pipiens, and adult R. catesbeiana) from two eastern counties and one western county in Nebraska.
Matthew G. Bolek, John Janovy
openalex +2 more sources
Canadian Journal of Zoology, 1993 A new species of duck leech, Theromyzon bifarium, is described which, like T. rude and T. maculosum, has the gonopores separated by two annuli. Theromyzon bifarium is distinguished by the presence of a cylindrical male atrium, paired dorsolateral male ducts which enter the atrium separately, and a posteriorly directed loop formed by the long common ...
J. H. Oosthuize, Ronald W. Davies
openalex +2 more sources
Molecular Phylogenetics and Evolution, 2018 Annelids possessing a posterior sucker and a fixed number of somites - most famously leeches (Hirudinida), but also crayfish worms (Branchiobdellida) and salmonid parasites (Acanthobdellida) - form a clade; however, determining the relationships between these orders has proven challenging. Here, we compile the largest molecular phylogenetic dataset yet
Michael Tessler +6 more
openalex +3 more sources
Comparative Parasitology, 2011 One of 4 (25%) white crappie, Pomoxis annularis, specimens from the Ouachita River, Dallas County, Arkansas, was found to be infested with 8 glossiphoniid leeches, Actinobdella inequiannulata Moore, 1901. Leeches were removed from within the operculum on gills and gill arches.
Chris T. McAllister +2 more
openalex +2 more sources
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1990 Abstract 1. Each salivary gland cell of Oosthuizobdella extends a single process (ductule) anteriorly into the proboscis. Secretion occurs at the ductule ending. 2. The cells produce calcium-dependent action potentials, accompanied by secretion, in response to stimulation of the stomatogastric nerve or to addition of 5-hydroxytryptamine (10 −4 M),
Ward F. Cooper, Michael S. Berry
openalex +2 more sources
Comparative Parasitology, 2003 Actinobdella inequiannulata was found on the white sucker, Catostomus commersoni, and less frequently on the longnose sucker, Catostomus catostomus, in Algonquin Provincial Park, Ontario, Canada. Catostomus commersoni parasitized with Act. inequiannulata was collected from July to October 1973 and May to October 1974.
Donald J. Klemm +3 more
openalex +3 more sources
Journal of Morphology, 1995 AbstractMorphological and ultrastructural features of the salivary glands and proboscises of Placobdella ornata, Placobdella parasitica, and Desserobdella picta were studied by light and electron microscopy. Chemical composition of the salivary cells was investigated using a variety of histochemical techniques. Placobdella ornata and P. parasitica have
William E. Moser, Sherwin S. Desser
openalex +3 more sources
Journal of Parasitology, 2015 One of the recalcitrant questions regarding the evolutionary history of clitellate annelids involves the feeding preference of the common ancestor of extant rhynchobdellid (proboscis bearing) and arhynchobdellid (jaw bearing) leeches. Whereas early evidence, based on morphological data, pointed towards independent acquisitions of blood feeding in the 2
Mark E. Siddall +2 more
openalex +3 more sources
Canadian Journal of Zoology, 1990 Desserobdella phalera (Graf, 1899) n.comb. is redescribed. This glossiphoniid leech deposits cocoons directly onto the substratum and belongs, therefore, in the subfamily Glossiphoniinae. It has the following generic characters: diffuse salivary glands, two pairs of coalesced eyes, one pair of mycetomes, and subdivision of primary annuli in complete ...
Simon R. M. Jones, Patrick T. K. Woo
openalex +2 more sources