Plasma chloride and gill epithelial response of channel catfish to infection with ichthyophthirius multifiliis

Margaret S. Ewino, Marsha C. Black, Vicki Suzette Blazer, Katherine M. Kocan

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Because infection with Ichthyophthirius multifiliis has been reported to result in osmotic stress, genesis of the plasma chloride and chloride cell response of channel catfish Ictalurus punctatus to the infection was studied from day 0 to day 7 postexposure (PE). Parasite population densities ranged from 0.08 to 0.22 trophonts per gill filament during days 1-5 PE and increased to 2.1 at day 7 PE. Population increases were the result of infection by a new generation of infective theronts and reproduction by the parasite on the host. Mean plasma chloride concentrations of fish were not significantly different among days 0-5 PE (range of means, 93.01-97.87 meq/L), but by day 7 PE the mean had declined significantly, to 83.73 meq/L. Maintenance of relatively stable plasma chloride concentrations for 5 d was associated with chloride cell proliferation. The number of interlamellar filament chloride cells had significantly increased by day 1 PE, and the number of chloride cells in the lamellae had significantly increased by day 5 PE. No further increase had occurred by day 7 PE. Vacuolization of chloride cells, examined by electron microscopy, became more common as infection progressed, and many chloride cells appeared to be degenerating by day SPE.

Original languageEnglish (US)
Number of pages1
JournalJournal of Aquatic Animal Health
Volume6
Issue number3
DOIs
StatePublished - Jan 1 1994

Fingerprint

Ichthyophthirius multifiliis
Ictalurus punctatus
gills
chlorides
chloride
plasma
infection
cells
parasite
parasites
osmotic stress
electron microscopy
population growth
cell proliferation
population density

All Science Journal Classification (ASJC) codes

  • Aquatic Science

Cite this

Ewino, Margaret S. ; Black, Marsha C. ; Blazer, Vicki Suzette ; Kocan, Katherine M. / Plasma chloride and gill epithelial response of channel catfish to infection with ichthyophthirius multifiliis. In: Journal of Aquatic Animal Health. 1994 ; Vol. 6, No. 3.
@article{a5daee6c70944ec1bc725dd5ec440b21,
title = "Plasma chloride and gill epithelial response of channel catfish to infection with ichthyophthirius multifiliis",
abstract = "Because infection with Ichthyophthirius multifiliis has been reported to result in osmotic stress, genesis of the plasma chloride and chloride cell response of channel catfish Ictalurus punctatus to the infection was studied from day 0 to day 7 postexposure (PE). Parasite population densities ranged from 0.08 to 0.22 trophonts per gill filament during days 1-5 PE and increased to 2.1 at day 7 PE. Population increases were the result of infection by a new generation of infective theronts and reproduction by the parasite on the host. Mean plasma chloride concentrations of fish were not significantly different among days 0-5 PE (range of means, 93.01-97.87 meq/L), but by day 7 PE the mean had declined significantly, to 83.73 meq/L. Maintenance of relatively stable plasma chloride concentrations for 5 d was associated with chloride cell proliferation. The number of interlamellar filament chloride cells had significantly increased by day 1 PE, and the number of chloride cells in the lamellae had significantly increased by day 5 PE. No further increase had occurred by day 7 PE. Vacuolization of chloride cells, examined by electron microscopy, became more common as infection progressed, and many chloride cells appeared to be degenerating by day SPE.",
author = "Ewino, {Margaret S.} and Black, {Marsha C.} and Blazer, {Vicki Suzette} and Kocan, {Katherine M.}",
year = "1994",
month = "1",
day = "1",
doi = "10.1577/1548-8667(1994)006<0187:PCAGER>2.3.CO;2",
language = "English (US)",
volume = "6",
journal = "Journal of Aquatic Animal Health",
issn = "0899-7659",
publisher = "American Fisheries Society",
number = "3",

}

Plasma chloride and gill epithelial response of channel catfish to infection with ichthyophthirius multifiliis. / Ewino, Margaret S.; Black, Marsha C.; Blazer, Vicki Suzette; Kocan, Katherine M.

In: Journal of Aquatic Animal Health, Vol. 6, No. 3, 01.01.1994.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Plasma chloride and gill epithelial response of channel catfish to infection with ichthyophthirius multifiliis

AU - Ewino, Margaret S.

AU - Black, Marsha C.

AU - Blazer, Vicki Suzette

AU - Kocan, Katherine M.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - Because infection with Ichthyophthirius multifiliis has been reported to result in osmotic stress, genesis of the plasma chloride and chloride cell response of channel catfish Ictalurus punctatus to the infection was studied from day 0 to day 7 postexposure (PE). Parasite population densities ranged from 0.08 to 0.22 trophonts per gill filament during days 1-5 PE and increased to 2.1 at day 7 PE. Population increases were the result of infection by a new generation of infective theronts and reproduction by the parasite on the host. Mean plasma chloride concentrations of fish were not significantly different among days 0-5 PE (range of means, 93.01-97.87 meq/L), but by day 7 PE the mean had declined significantly, to 83.73 meq/L. Maintenance of relatively stable plasma chloride concentrations for 5 d was associated with chloride cell proliferation. The number of interlamellar filament chloride cells had significantly increased by day 1 PE, and the number of chloride cells in the lamellae had significantly increased by day 5 PE. No further increase had occurred by day 7 PE. Vacuolization of chloride cells, examined by electron microscopy, became more common as infection progressed, and many chloride cells appeared to be degenerating by day SPE.

AB - Because infection with Ichthyophthirius multifiliis has been reported to result in osmotic stress, genesis of the plasma chloride and chloride cell response of channel catfish Ictalurus punctatus to the infection was studied from day 0 to day 7 postexposure (PE). Parasite population densities ranged from 0.08 to 0.22 trophonts per gill filament during days 1-5 PE and increased to 2.1 at day 7 PE. Population increases were the result of infection by a new generation of infective theronts and reproduction by the parasite on the host. Mean plasma chloride concentrations of fish were not significantly different among days 0-5 PE (range of means, 93.01-97.87 meq/L), but by day 7 PE the mean had declined significantly, to 83.73 meq/L. Maintenance of relatively stable plasma chloride concentrations for 5 d was associated with chloride cell proliferation. The number of interlamellar filament chloride cells had significantly increased by day 1 PE, and the number of chloride cells in the lamellae had significantly increased by day 5 PE. No further increase had occurred by day 7 PE. Vacuolization of chloride cells, examined by electron microscopy, became more common as infection progressed, and many chloride cells appeared to be degenerating by day SPE.

UR - http://www.scopus.com/inward/record.url?scp=0027974831&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027974831&partnerID=8YFLogxK

U2 - 10.1577/1548-8667(1994)006<0187:PCAGER>2.3.CO;2

DO - 10.1577/1548-8667(1994)006<0187:PCAGER>2.3.CO;2

M3 - Article

AN - SCOPUS:0027974831

VL - 6

JO - Journal of Aquatic Animal Health

JF - Journal of Aquatic Animal Health

SN - 0899-7659

IS - 3

ER -