Now showing items 1-10 of 1208
Hotspot of tadpole abnormality in suburban south-west Florida
(British Herpetological Society, 2019-04)
A high concentration of Cuban treefrog (Osteopilus septentrionalis) tadpoles displaying morphological abnormalities was discovered in an untreated swimming pool in Bonita Springs, Florida. This find initiated a 4-year ...
Amphibian abnormalities: historical records of museum collection in Tucuman province, Argentina
(British Herpetological Society, 2013-10)
We analyze patterns of abnormalities in anurans from Tucumán, Argentina, deposited in the Fundación Miguel Lillo collection. We examined 1651 specimens collected from 1940 to 2010. Overall abnormality prevalence was 4.4% ...
Phenotypic varieties of sperm pathology: Genetic abnormalities or environmental influences can result in different patterns of abnormal spermatozoa
(Elsevier Science, 2018-07)
The present paper reviews in detail ultrastructural and molecular studies addressed to characterize different phenotypes of sperm pathology in sterile men. In each case ultrastructural, immunocytochemical, molecular and ...
Abnormalities in amphibian populations inhabiting agroecosystems in northeastern Buenos Aires Province, Argentina
The occurrence of abnormalities in amphibians has been reported in many populations, and its increase could be related to environmental pollution and habitat degradation. We evaluated the type and prevalence of abnormalities ...
Abnormal emotional behavior in children and its relationship to televised violence
(Universidad del Zulia, 2019)
Abnormalities in flatfishes of the south-west Atlantic Ocean
(Wiley Blackwell Publishing, Inc, 2018-04)
Five adult paralichthyid specimens with various kinds of abnormalities are reported from the south-west Atlantic Ocean. These abnormal flatfish specimens represent the first records of wholly ambicoloured Paralichthys ...
The making of abnormal spermatozoa: Cellular and molecular mechanisms underlying pathological spermiogenesis
Fertilization in mammals occurs via a series of well-defined events in the secluded environment of the female reproductive tract. The mode of selection of the fertilizing spermatozoon nevertheless remains unknown. As has ...
Effect on the growth and development and induction of abnormalities by a glyphosate commercial formulation and its active ingredient during two developmental stages of the South-American Creole frog, Leptodactylus latrans
(Springer Heidelberg, 2016-12)
We evaluated the acute lethal and sublethal effects of technical-grade glyphosate (GLY) and the GLY-based commercial formulation Roundup ULTRA MAX® (RU) on two Gosner stages (Gss) 25 and 36 of the South-American Creole ...
Phenotypic instability and epigenetic variability in a diploid potato of hybrid origin, Solanum ruiz-lealii
(BioMed Central, 2009-02-20)
Background: The wild potato Solanum ruiz-lealii Brüch. (2n = 2x = 24), a species of hybrid origin, is endemic to Mendoza province, Argentina. Recurrent flower malformations, which varied among inflorescences of the same ...
Morphological abnormalities in natural populations of the common South American toad Rhinella arenarum inhabiting fluoride-rich environments
(Academic Press Inc Elsevier Science, 2019-08)
Morphological abnormalities in amphibians may be attributed to contaminants, ultraviolet radiation and trematode parasites, or a synergistic effect between them. In the present study, morphological abnormalities in Rhinella ...