Results 161 to 170 of about 1,328 (184)
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Hydrobiologia, 2004
Erpobdella (Dina) parva complex (E. parva, E. dubia, and E. lahontana) were analyzed by species distribution, pigmentation, size, number and position of the labial eyes, tubercle presence, annulus width, gonopore position, and male genital atrium shape. I concluded that E. parva and E. dubia are conspecific, with the priority name of E. parva.
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Erpobdella (Dina) parva complex (E. parva, E. dubia, and E. lahontana) were analyzed by species distribution, pigmentation, size, number and position of the labial eyes, tubercle presence, annulus width, gonopore position, and male genital atrium shape. I concluded that E. parva and E. dubia are conspecific, with the priority name of E. parva.
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Comparative Biochemistry and Physiology Part A: Physiology, 1980
Abstract 1. 1. The ability of two species of freshwater leech to regulate their weight was examined in media between 6 and 900 mOsm/l. 2. 2. Nephelopsis obscura was able to maintain its weight from 100–207 mOsm/l while Erpobdella punctata could regulate between 58 and 200 mOsm/l and at 900 mOsm/l reached equilibrium at 1.8 times its ...
Trefor B Reynoldson, Ronald W Davies
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Abstract 1. 1. The ability of two species of freshwater leech to regulate their weight was examined in media between 6 and 900 mOsm/l. 2. 2. Nephelopsis obscura was able to maintain its weight from 100–207 mOsm/l while Erpobdella punctata could regulate between 58 and 200 mOsm/l and at 900 mOsm/l reached equilibrium at 1.8 times its ...
Trefor B Reynoldson, Ronald W Davies
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Octopamine in leeches—I. Distribution of octopamine in Macrobdella decora and Erpobdella octoculata
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1980Abstract 1. The nervous and other tissues of the leeches M. decora and E. octoculata were asayed for octopamine using a radiochemical-enzymatic technique. 2. Octopamine was found at mean concentrations of 12–40 ng/mg tissue protein in the ganglionated nervous tissue; lesser amounts of 7.4–19 ng/mg tissue protein were observed in the non-ganglionated
Rodney A. Webb, I. Orchard
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Transactions of the American Microscopical Society, 1986
Sensilla of the predaceous fresh-water leech Erpobdella montezuma were examined by scanning and transmission electron microscopy. Densities of sensilla and cilia within each sensillum were highest in the anterior-most annulus and were less in more posterior annuli.
Dean W. Blinn +2 more
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Sensilla of the predaceous fresh-water leech Erpobdella montezuma were examined by scanning and transmission electron microscopy. Densities of sensilla and cilia within each sensillum were highest in the anterior-most annulus and were less in more posterior annuli.
Dean W. Blinn +2 more
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Comparative Biochemistry and Physiology Part A: Physiology, 1974
Abstract 1. 1. The high content of proline and of bulky amino acid residues and the amorphous X-ray diffraction pattern suggest that much of the protein of the egg capsule of Erpobdella octoculata is amorphous. 2. 2. The sharp thermal transition, the presence of banded fibrils apparently composed of 15 A filaments and the amino acid ...
D P, Knight, S, Hunt
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Abstract 1. 1. The high content of proline and of bulky amino acid residues and the amorphous X-ray diffraction pattern suggest that much of the protein of the egg capsule of Erpobdella octoculata is amorphous. 2. 2. The sharp thermal transition, the presence of banded fibrils apparently composed of 15 A filaments and the amino acid ...
D P, Knight, S, Hunt
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Hydrobiologia, 1988
In laboratory experiments, eleven out of twenty-one invertebrate species and all of the three fish species tested fed on freshly laid flaccid cocoons of Erpobdella octoculata, though predation was only severe from a dytiscid beetle, E. octoculata and the fish species. There was a tendency for more cocoons to be eaten by starved than fed predators. Only
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In laboratory experiments, eleven out of twenty-one invertebrate species and all of the three fish species tested fed on freshly laid flaccid cocoons of Erpobdella octoculata, though predation was only severe from a dytiscid beetle, E. octoculata and the fish species. There was a tendency for more cocoons to be eaten by starved than fed predators. Only
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Seasonal Variation in the Respiratory Acclimatization of the Leech Erpobdella Testacea (Sav.)
Journal of Experimental Biology, 1958ABSTRACT In a preliminary study of the oxygen consumption of leeches (Mann, 1956), it was shown that Erpobdella testacea has an oxygen consumption which is independent of the oxygen concentration in the water, over the range 2–6 ml./l., provided that it has been acclimatized overnight to the oxygen concentration of the experiment.
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The Feeding Strategies of the Leech Erpobdella octoculata (L.): A Laboratory Study
International Review of Hydrobiology, 2003AbstractThe feeding behaviour of the freshwater leech Erpobdella octoculata was analysed by exposing potential invertebrate and vertebrate prey organisms (alive, wounded or dead) to leech attack in dishes, in the laboratory. The fact that E. octoculata is a macrophagous feeder that swallows living prey organisms whole (preferentially Chironomus larvae)
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The Feeding Strategies of the LeechErpobdella octoculata (L.): A Laboratory Study
International Review of Hydrobiology, 2003Ulrich Kutschera
exaly