Publications

TitleAbstractYear(sorted descending)
Filter
PMID
Filter
trifluralin and oryzalin herbicides toxicities to juvenile crawfish (procambarus clarkii) and mosquitofish (gambusia affinis). 19836688742
localization and pattern of the mitotic activity in the central nervous system of developing oviparous and viviparous teleosts.the subject of this work is an analysis of the mitotic activity in the developing spinal cord and rhombencephalon of the oviparous teleost jordanella floridae and the viviparous teleost gambusia affinis (cyprinodontoidei). in gambusia there is considerable and long lasting mitotic activity that decreases gradually and is still present 20 days after birth. in jordanella the mitotic activity is concentrated in the early stages of development, it then decreases drastically and practically disappear ...19836688906
the adrenal gland of the viviparous teleost gambusia affinis (girard). a histochemical study. 19836629221
the ultrastructure of the eye of the mosquitofish gambusia affinis.the ultrastructure of the tissue components of the eye of gambusia affinis, excluding the sensory cells, is described. the cornea consists of two different sections of collagenous layers of different density. the choroid includes an argentea composed of alpha- and beta-melanophores, lipopterinophores and a choriocapillaris associated with the rete mirabile of the choroid body, bruch's membrane, underlying the retinal pigment layer, can develop complex associations with fibroblasts delimiting the ...19827066979
on the relationship between alcohol narcosis and membrane fluidity.we have examined the relationship between membrane fluidity and the alcohol-induced loss of righting reflex at different temperatures using the fish gambusia affinis. the potency of ethanol and hexanol increased dramatically with temperature. ethanol-induced narcosis could be antagonized by a reduction in incubation temperature. both an increase in temperature and the addition of ethanol caused an increase in membrane fluidity. however, membrane fluidity itself did not correlate with narcosis an ...19826897749
size specific predation by herons and its effect on the sex-ratio of natural populations of the mosquito fish gambusia affinis baird and girard.sex-ratios of gambusia affinis populations in freshwater marshes in the camargue (rhône delta), are highly biased in favour of males, whereas the sex-ratios in ditches are close to unity. studies of the diet of free living birds and experimental studies on prey size selection in captivity show that the abnormal sex-ratios in marshes can be attributed to differential heron predation. ditches are relatively free from predation. mature female gambusia are larger, and have an energy content 5-25 tim ...198228311103
bioaccumulation of 95mtc in fish and snails.concentration factors for technetium recommended in radiological assessment models for freshwater biota are default values based on the behavior of iodine in the environment. in this study a small experimental freshwater pond was spiked with 95mtc to obtain data for calculating concentration factors for fish and snails. a model using the pond data was developed to calculate steady-state body burdens for freshwater biota. the concentration factors based on the calculated body burden for carp (cap ...19826896045
feasibility of mosquito larval control in casuarina pits using gambusia affinis. 19826897726
larvivorous efficiency of gambusia affinis baird and girard. 19816895213
persistent vitellogenin-like protein and binding of ddt in the serum of insecticide-resistant mosquitofish (gambusia affinis). 19816113078
acute toxicity of some pesticides & a few inorganic salts to the mosquito fish gambusia affinis (baird & girard). 19807399617
glycogen in the central nervous system of adults and developing anamnia.the distribution of glycogen in the central nervous system of the viviparous teleost gambusia affinis and of the oviparous teleost jordanella floridae during development and in the adults, was examined. it emerged that the glycogen pattern in adults of gambusia and jordanella is very similar, whereas there are considerable differences during development. these differences were related to the different ways in which development takes place in the two species.19807415396
tolerance of low oxygen stress in insecticide-resistant and susceptible populations of mosquitofish (gambusia affinis). 1979583172
bioaccumulation and bioamplification of mercury compounds in a second level consumer, gambusia affinis--temperature effects. 1979486786
a seasonal study of microsomal mixed-function oxidase components in insecticide-resistant and susceptible mosquitofish, gambusia affinis. 1979473193
relative importance of food and water sources to cadmium uptake by gambusia affinis (poeciliidae). 1978679917
control of mosquito breeding in wells by using gambusia affinis and aplocheilus blochii in pondicherry town. 1978582034
the use of uniform labeling with zinc-65 to measure stable zinc turnover in the mosquito fish, gambusia affinis--i. retention. 1977577919
aspects of fitness of a mosquitofish gambusia affinis population exposed to chronic low-level environmental radiation. 1977576741
caudal fin regeneration in the mosquito fish, gambusia affinis. an in vivo system for the study of ultraviolet radiation damage. 1977841002
muscle esterases of the mosquitofish, gambusia affinis.1. muscle esterases of gambusia affinis were separable into 14 electrophoretic bands that formed five groups according to differential physical and chemical properties. 2. nine phenotypic patterns were observed among the populations sampled, based on variation within the est-3 group of carboxylesterases. 3. a model for the molecular and genetic bases of the est-3 polymorphism was proposed on the basis of phenotypic patterns and physicochemical characterization. 4. the isozymes of est-3 are infer ...1977318274
uptake of 36cl-toxaphene in mosquito fish, gambusia affinis.the toxicity syndrome of toxaphene to g. affinis was divided into 5 stages, and the residue level at each stage was determined. by the time fish were exhibiting the first toxicity response (stage 2), 90.3% of the mean fatal residue level had been sorbed. regression analysis indicated that sorption of toxaphene is a linear function with respect to time. excretion was not observed following an 8 hour exposure to 2ppm toxaphene. metabolic alteration of toxaphene during the experiments appeared to b ...1976946771
diel variation in the thermal tolerance of gambusia affinis affinis (pisces:poeciliidae). 19769246
spermiogenesis in the teleost gambusia affinis with particular reference to the role played by microtubules.during nuclear elongation in spermatids of gambusia affinis, a deep fossa is formed at the base of the nucleus in which the centriolar complex and proximal portion of the flagellum reside. to stabilize the positional relationship between the nucleus and centriolar complex, while nuclear morphogenesis is taking place, a series of microtubules develop which emanate from the centriolar complex and extend to the nuclear envelope lining the fossa. buttressing microtubules also develop within the nucl ...19751203975
aldrin and dieldrin uptake in insecticide-resistant and susceptible mosquitofish (gambusia affinis). 19751203585
a comparative cytological study between hepatocytes of insecticide-resistant and susceptible mosquitofish (gambusia affinis).the livers from a naturally occurring insecticide-resistant mosquitofish population were examined cytologically and compared to liver preparations from a susceptible population. there was a marked increase in cell size and lipid inclusions in the hepatocytes of resistant mosquitofish as compared to susceptible mosquitofish. the pronounced lipid inclusions in the liver preparations of resistant mosquitofish remained essentially unchanged in mosquitofish starved for up to 2 weeks. no observable di ...19751173057
predatory behavior of gambusia affinis in relation to different light colors. 19751135303
observations on the use of gambusia affinis holbrooki to control a. stephensi breeding in wells. results of two years' study in greater hyderabad city--india. 19751222962
effect of running water on the predatory efficiency of the larvivorous fish gambusia affinis.effects of standing and running water on the predatory efficiency of the larvivorous fish gambusia affinis was tested at 6 different current speed: 0.0, 0.8, 2.4, 4.5, 8.5 and 10.2 ml/sec. g. affinis predated 25 anopheles stephansi or 21 culex fatigans (iv instar) during the test period of 10 hours. the predatory efficiency of g. affinis decreased remarkably to about 60% and thereafter gradually to about 30% in aquaria containing running water at the speed of 2.4 and 10.2 ml/sec, respectively.197428308612
cyclic amp and adrenergic receptors in gambusia affinis melanophore response in vitro. 19744152106
rhodamine b and other stains as markers for the mosquito fish, gambusia affinis. 19724120248
avoidance of pesticides by untrained mosquitofish, gambusia affinis. 19724118741
selective feeding behaviour of gambusia affinis. 197228307207
ecosystem alteration by mosquitofish (gambusia affinis) predation.in artificial pools gambusia affinis greatly reduced rotifer, crustacean, and insect populations and thus permitted extraordinary development of phytoplankton populations (2x10(8) cells per milliliter). other effects included decreased optical transmissivity and increased temperature of the water, decreased amounts of dissolved inorganic phosphorus, and increased amounts of dissolved organic phosphorus, inhibition of spirogyra, and replacement of one annelid, chaetogaster, by another, aeolosoma.197217808805
further biological and chemical studies on gambusia affinis (baird and girard) in california. 19705530832
estimation of low chlorpromazine concentrations by surfacing and sinking reaction of minnows (gambusia affinis). 19705491476
the effect of temperature on the dose response of gambusia affinis affinis from two natural populations. 19695352949
differential staining of chloride-secretory cells in the gills of gambusia affinis affinis (baird and girard). 19694183834
influence of temperature on the fatty acid pattern of mosquitofish (gambusia affinis) and guppies (lebistes reticulatus).adult male mosquitofish were adapted to 14-15c and 26-27c water temperature over a 14-day period and the fatty acids from their total lipids analyzed by gasliquid chromatography.newly born guppies were raised at the same temperature for eight weeks and analyzed in the same way. some fish in the warm water group were subjected to a sudden drop in temperature and the changes of the fatty acids studied after two and eight days, and after two and four weeks.in all fish the tendency is toward higher ...196617805663
studies with the mosquitofish, gambusia affinis, as a chironomid control. 19665966136
resistance to ddt in the mosquito fish, gambusia affinis.mosquito fish from waters near cotton fields that have had a long history of treatment with chlorinated hydrocarbon pesticides exhibited a marked resistance to ddt compared with fish from areas which had had no past exposure to insecticides.196313997402
incidence of coliform bacteria in the intestinal tract of gambusia affinis holbrooki (girard) and in their habitat water. 196313955523
on the habits of the exotic mosquito-fish gambusia affinis (baird and girard) in the waters of madras. 194818856607
the rate of morphogenesis and regeneration of the gonopodium in normal and castrated males of gambusia affinis. 194718918637
retention of response to ethynyl testosterone in females of gambusia affinis. 194620275388
studies on monogenetic trematodes; urocleidus seculus, a new species of tetraonchinae from the viviparous top minnow, gambusia affinis affinis (baird and girard). 194521006501
sex ratio variation shapes the ecological effects of a globally introduced freshwater fish.sex ratio and sexual dimorphism have long been of interest in population and evolutionary ecology, but consequences for communities and ecosystems remain untested. sex ratio could influence ecological conditions whenever sexual dimorphism is associated with ecological dimorphism in species with strong ecological interactions. we tested for ecological implications of sex ratio variation in the sexually dimorphic western mosquitofish, gambusia affinis. this species causes strong pelagic trophic ca ...026490793
Displaying items 301 - 347 of 347