Ovarian damage to Channa punctatus after chronic exposure to low concentrations of Elsan, mercury, and ammonia
Journal Article
·
· Ecotoxicol. Environ. Saf.; (United States)
Histopathological changes were induced in the ovary by chronic nonlethal levels of Elsan (211 ppb), mercury (16.7 ppb), and ammonia (15.64 ppm). In the breeding season, treated Channa punctatus revealed a significant decrease in ovarian weight throughout the duration of the experiment. Acute changes were noted in the diameter and percentage occurrence of the different stages of oocytes. In all cases, stage I oocytes revealed no difference in diameter with respect to control although they demonstrated an increase in the percentage occurrence. For stages II and III, a remarkable decrease occurred in both the number and the diameter of these mature oocytes. The preponderance of stage I and destruction of stage II and stage III oocytes in all three treatments indicate that chemically diverse xenobiotics have equal reproductive toxicity in fish, interfering with their breeding.
- Research Organization:
- Visva-Bharati Univ., West Bengal (India)
- OSTI ID:
- 5813764
- Journal Information:
- Ecotoxicol. Environ. Saf.; (United States), Journal Name: Ecotoxicol. Environ. Saf.; (United States) Vol. 17:2; ISSN EESAD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMMONIA
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL INDICATORS
BODY
ELEMENTS
FEMALE GENITALS
FISHES
GERM CELLS
GONADS
HYDRIDES
HYDROGEN COMPOUNDS
MERCURY
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OOCYTES
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANS
OVARIES
PATHOLOGICAL CHANGES
POLLUTION
SENSITIVITY
TOXICITY
VERTEBRATES
WATER POLLUTION
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMMONIA
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL INDICATORS
BODY
ELEMENTS
FEMALE GENITALS
FISHES
GERM CELLS
GONADS
HYDRIDES
HYDROGEN COMPOUNDS
MERCURY
METALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OOCYTES
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANS
OVARIES
PATHOLOGICAL CHANGES
POLLUTION
SENSITIVITY
TOXICITY
VERTEBRATES
WATER POLLUTION