Results 111 to 120 of about 227 (130)
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Parasitology Research, 2020
A new snail-eating leech, Batracobdelloides bangkhenensis sp. n., was discovered at Kasetsart University, Bangkhen Campus, Bangkok, Thailand. This species is found free living in the benthic zone of ponds; feeds on freshwater snails, including Bithynia siamensis siamensis, Indoplanorbis exustus, Radix rubiginosa, Physella acuta, and Pomacea ...
Krittiya Chiangkul +2 more
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A new snail-eating leech, Batracobdelloides bangkhenensis sp. n., was discovered at Kasetsart University, Bangkhen Campus, Bangkok, Thailand. This species is found free living in the benthic zone of ponds; feeds on freshwater snails, including Bithynia siamensis siamensis, Indoplanorbis exustus, Radix rubiginosa, Physella acuta, and Pomacea ...
Krittiya Chiangkul +2 more
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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
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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
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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
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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
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Journal of Parasitology, 2016
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
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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
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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
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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
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General and comparative endocrinology, 1983
The body water content of Theromyzon tessulatum changes considerably during the life cycle. Water content is low and undergoes little change during the first stages, but it strongly and regularly increases during the last stage prior to reproduction. It is controlled by a water balance factor (FRBH) released by the brain.
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The body water content of Theromyzon tessulatum changes considerably during the life cycle. Water content is low and undergoes little change during the first stages, but it strongly and regularly increases during the last stage prior to reproduction. It is controlled by a water balance factor (FRBH) released by the brain.
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Journal of environmental sciences (China), 2003
The distribution, abundance and intensity of the annelid worm, Piscicola geometra(leeches) infecting Oreochromis niloticus cultured in a rainforest fish pond, South Eastern Nigeria was studied over a 12 months period. Three hundred fish were examined of which 48.3% were infected. Infection occurred throughout the year, with a peak in February.
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The distribution, abundance and intensity of the annelid worm, Piscicola geometra(leeches) infecting Oreochromis niloticus cultured in a rainforest fish pond, South Eastern Nigeria was studied over a 12 months period. Three hundred fish were examined of which 48.3% were infected. Infection occurred throughout the year, with a peak in February.
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