| rapid decline in the behavioral response of paradise fish (macropodus opercularis) to prostaglandin f2 alpha treatment. | prostaglandins (pgs) can affect sexual behavior in a range of vertebrates including goldfish, paradise fish, lizards, frogs, hamsters, and rats. behavioral responsiveness to pg treatment has not previously been reported to correlate with reproductive condition. earlier work (villars et al., 1985) has suggested that in paradise fish, response to pg treatment may be limited to the period immediately following spawning. in the present experiment, prespawned females were tested for their response to ... | 1986 | 3465669 |
| post-embryonic development of camallanus cotti (nematoda: camallanidae), with emphasis on growth of some taxonomically important somatic characters. | in this paper, the quantitative post-embryonic development of the asian freshwater fish nematode camallanus cotti fujita, 1927, is described. larval and adult morphometrics were obtained by following the parasite's life cycle experimentally using copepods macrocyclops albidus (jurine) as intermediate host and guppies poecilia reticulata (peters), southern platyfish xiphophorus maculatus (günther) and paradise fish macropodus opercularis (l.) as definitive host. additionally, adult worms were obt ... | 2002 | 12418817 |
| detection of megalocytivirus from imported tropical ornamental fish, paradise fish macropodus opercularis. | megalocytivirus was detected from paradise fish macropodus opercularis imported from indonesia. four of 11 fish (36%) in 2006 and 40 of 117 fish (34%) in 2008 were found to be pcr-positive for megalocytivirus. phylogenetic analysis based on partial major capsid protein (mcp) gene nucleotide sequences revealed that the sequences detected in paradise fish were classified as genotype ii, which includes freshwater fish isolates from southeast asian countries, closely related to infectious spleen and ... | 2010 | 20815332 |
| correlation of sexual behaviour and ovarian processes in the paradise fish, macropodus opercularis. | changes in ovarian development were described during successive phases of reproductive behaviour defined from an ethological approach in paradise fish, macropodus opercularis. we found this perannial breeder fish to show typical induced ovulation pattern and during the synchronization process each behavioural phase (or maintenance condition) can be characterized by a dominant cell type. our preliminary results suggest, that m. opercularis is an excellant model animal for quantitative studies of ... | 2005 | 550655 |
| behavior-genetic analysis of the paradise fish, macropodus opercularis. i. characterization of the behavioral responses of inbred strains in novel environments: a factor analysis. | | 2014 | 4096678 |
| effect of the components of the physical environment on escape behaviour of the paradise fish (macropodus opercularis). | physical features of a seminatural environment on provoking various defence behaviour elements of the paradise fish were studied. it was found that most escape behaviour forms were under the control of visual stimuli. transparent physical space induced escape and inhibited jumping. while the latter was induced by the presence of vertical untransparent surfaces. dark places usually were avoided by the paradise fish. placed into an unfamiliar environment in the presence of different escape routes ... | 2009 | 2633585 |
| diallel genetic analysis of the elements of paradise fish's (macropodus opercularis l.) behavior in familiar and novel situations. | elements of the paradise fish's ethogram were recorded in 1 familiar and 3 different unfamiliar situations and the inheritance of these behavioral elements was investigated employing a five times replicated diallel cross between 3 inbred strains. a generalized hayman analysis of variance and a variance covariance analysis were performed to estimate genetic effects and parameters, such as, additive genetic variance, different sorts of dominance variance, reciprocal effects, direction and degree o ... | 2009 | 2633583 |
| studies on the peripheral blood cell parameters and morphology of the red paradise fish, macropodus opercularis. effect of food deprivation on erythropoiesis. | | 2015 | 4682842 |
| identification of lymphocystis disease virus from paradise fish macropodus opercularis (lcdv-pf). | iridoviruses are large dna viruses that are subdivided into five genera: ranavirus, megalocytivirus, lymphocystivirus, chloriridovirus and iridovirus. the iridovirus lymphocystis disease virus (lcdv) is an important fish pathogen that can infect marine and freshwater fish worldwide. in this study, we have identified the pathogen in paradise fish (macropodus opercularis) with lymphocystis. on the skin and fins of diseased paradise fish, a large number of nodules were observed. h&e staining showed ... | 2014 | 24705603 |
| ploidy levels and the number of nuclei in cardiomyocytes of the lamprey and fish. | it is well known that polyploidization of cardiomyocytes (cmc) is an essential component of heart growth in the warm-blooded vertebrates. using the feulgen cytophotometry of alkali-dissociated cells, we determined the ploidy in cmc of the lower vertebrates: lamprey lampetra fluviatilis (cyclostomata), skate bathyraja maculata (chondrostei), sterlet acipenser ruthenus, and russian sturgeon acipenser güldenstädti (ganoids), as well as paradise fish macropodus opercularis, amur sleeper perccottus g ... | 2002 | 12149784 |
| form and function of jaws during feeding: ctenopoma acutirostre, anabas testudineus and macropodus opercularis. | | 1979 | 474196 |
| development of gas exchange and ion regulation in two species of air-breathing fish, betta splendens and macropodus opercularis. | aquatic air-breathing anabantoids, a group of fish species characterized by the presence of a labyrinth organ and some gills, exhibit morphological variations. this study aimed to examine whether unequal gill growth begins during the early stages and described the sequence of the early gill developmental events in betta splendens and macropodus opercularis. to determine when the ion regulatory and gas exchange abilities first appear in the gills, mitochondria-rich cells (mrcs) and neuroepithelia ... | 2015 | 25783787 |
| social chemosignals in five belontiidae (pisces) species. | approach behaviors toward conspecific chemical stimuli of the opposite sex were examined in five belontiidae species: betta splendens, macropodus opercularis, colisa labiosa, c. lalia, and trichogaster trichopterus. approach was measured by (a) preference for section 1 of a three-section tank, which contained a vertical tube that introduced the stimulus water, and (b) occupancy of the tube. experiments 1a and 1b showed that (a) approach behaviors were displayed by the isolated male betta only to ... | 1979 | 521526 |
| strength of aggressive display in siamese fighting fish (betta splendens) toward a conspecific, an alien species (macropodus opercularis), and a mirror image as affected by prior conspecific visual experience. | | 1977 | 562154 |
| astronotus ocellatus (cichlidae:pisces) and macropodus opercularis (anabatidae:pisces) as predators of immature aedes fluviatilis (diptera:culicidae) and biomphalaria glabrata (mollusca:planorbidae). | two fish species, astronotus ocellatus (cichlidae) and macropodus opercularis (anabatidae) were tested for predacious behavior toward immature mosquitoes (aedes fluviatilis, diptera:culicidae) and schistosomiasis snail hosts (biomphalaria glabrata, mollusca:planorbidae), in the presence or absence of non-living food and in laboratory conditions. a. ocellatus, a species indigenous to brazil, was a very efficient predator of both organisms (alpha = 0.05); m. opercularis, an exotic species, preyed ... | 2006 | 1842433 |
| effects of forebrain ablation on growth in teleost fishes. | the effect of forebrain extirpation on food uptake and growth was studied in different teleost species. in the case of wild species such as carassius gibelio and macropodus opercularis concolor, a prolonged enhancement of food uptake and body growth was found following forebrain ablation. in the case of domesticated species such as the common goldfish (carassius auratus) and macropodus opercularis, there was no effect of forebrain extirpation on either food uptake or growth. | 1978 | 754418 |
| habituation, reinstatement and recovery of predatory responses in two species of teleosts, carassius auratus and macropodus opercularis. | | 1972 | 4644155 |
| correlation between auditory sensitivity and vocalization in anabantoid fishes. | several anabantoid species produce broadband sounds with high-pitched dominant frequencies (0.8-2.5 khz), which contrast with generally low-frequency hearing abilities in (perciform) fishes. utilizing a recently developed auditory brainstem response recording-technique, auditory sensitivities of the gouramis trichopsis vittata, t. pumila, colisa lalia, macropodus opercularis and trichogaster trichopterus were investigated and compared with the sound characteristics of the respective species. all ... | 1998 | 9631554 |