Embryonic Mortality and Chromosomal Alterations Caused by Aroclor 1254 in Ring Doves
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Embryonic Mortality and Chromosomal Alterations Caused by Aroclor 1254 in Ring Doves
The breeding success of Ring Doves (Streptopelia risoria) fed Aroclor 1254 at 10 ppm was determined over two generations. Six pairs of birds were fed PCBs for three months, then allowed to incubate their clutch of two eggs. Eggs were then collected again for six months, at which time the birds were allowed to incubate another clutch. Results are given in Table 1. The low-hatching success of the...
متن کاملDevelopmental exposure to Aroclor 1254 produces low-frequency alterations in adult rat brainstem auditory evoked responses.
Developmental exposure of Long-Evans rats to 0, 1, 4, or 8 mg/kg/day Aroclor 1254 (A1254) from Gestational Day 6 through Postnatal Day 21 produces an elevated behavioral threshold for a 1-kHz tone. Brainstem auditory evoked responses (BAERs) were assessed in a subset of these animals (about 1 year old) using filtered clicks at 1 (65 and 80 dB SPL), 4 (60 and 80 dB SPL), 16 (40 and 80 dB SPL), a...
متن کاملEffect of polychlorinated biphenyl, Aroclor 1254 on rat epididymis.
BACKGROUND & OBJECTIVES Polychlorinated biphenyls (PCB), the synthetic chlorinated organic compounds, are known to decrease thyroid function, sperm count and fertility, and increase the risk of testicular cancer may cause serious effect on male reproduction. The objective of the present study was to study the effect of PCB, Aroclor 1254 on rat epididymal structure and function. METHODS Adult ...
متن کاملChromosomal Aneuploidies and Early Embryonic Developmental Arrest
Background Selecting the best embryo for transfer, with the highest chance of achieving a vital pregnancy, is a major goal in current in vitro fertilization (IVF) technology. The high rate of embryonic developmental arrest during IVF treatment is one of the limitations in achieving this goal. Chromosomal abnormalities are possibly linked with chromosomal arrest and selection against abnormal fe...
متن کاملBioaccumulation and Histopathological Alterations in Liver Caused by Endosulfan Toxicity in Oreochromis Niloticus
Objective: The toxic effects of sublethal concentrations of endosulfan on Oreochromis niloticus was examined using bioaccumulation and histopathology studies of the liver as toxicological endpoint. Methods: The Organization for Economic Cooperation and Development #407 recommended static renewal bioassay was employed during the test .The test fish were exposed to sub-lethal concentrat...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 1972
ISSN: 0091-6765,1552-9924
DOI: 10.1289/ehp.7201103