Ancylostoma tubaeforme: osmoregulatory ampulla of larvae |
| |
| Authors: | N A Croll L Slater J M Smith |
| |
| Affiliation: | 1. Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Brazil;2. Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem, Rio de Janeiro, Brazil;1. State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou, 730046, Gansu, China;2. Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University College of Veterinary Medicine, Yangzhou, 225009, China;1. Department of Biology and Environmental Protection, Poznań University of Physical Education, Królowej Jadwigi 27/39, 61-871, Poznań, Poland;2. Molecular Biology Techniques Laboratory, Faculty of Biology, Adam Mickiewicz University in Poznań, Umultowska 89, Poznan, Poland;3. Chair of Ecology and Environmental Protection, Faculty of Biology, University of Szczecin, Wąska 13, 71-415, Szczecin, Poland;4. Chair of Biotechnology of Animal Reproduction and Environmental Hygiene, Faculty of Biotechnology and Animal Breeding, West Pomeranian University of Technology Szczecin, Doktora Judyma 6, 71-466, Szczecin, Poland |
| |
| Abstract: | Weinstein's 1952 observations on the osmoregulatory ampulla of Ancylostoma caninum and Nippostrongylus brasiliensis have been reexamined using A. tubaeforme. Weinstein's data have been broadly confirmed, but there are certain differences. Pulsations of the ampulla ceased below 15 C and above 45 C, or when sealed on a slide for 24 hr or in propylene phenoxytol. succinyl choline, or cyanide. The relationship between pulsation rate and osmosity was not linear, as found by Weinstein. It is suggested that larval movement is a necessary part of osmoregulation, and that ampulla contraction is a reflex action occurring when distended. The sheath plays no part in osmoregulation; larvae are unable to regulate in hypertonic conditions; and the ampulla is involved in osmoregulation of preinfective larvae. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
