| changes along the pituitary-gonadal axis during maturation of the black carp, mylopharyngodon piceus. | the black carp, mylopharyngodon piceus, is a late-maturing cyprinid reaching sexual maturity at the age of 6-7 years. the present work attempted to define nonfunctional sites along the pituitary-gonadal axis in immature fish utilizing in vivo and in vitro challenge experiments. two- and 3-year old fish injected with salmon gonadotropin-releasing hormone analog (sgnrha; 10 microg/kg) and metoclopramide (20 mg/kg) did not reveal any increase in circulating gonadotropin (cgth) or estradiol (e(2)) l ... | 2000 | 10684563 |
| immunocytochemical identification and localization of apud cells in the gut of seven stomachless teleost fishes. | aim:to study the cell types, localization, distribution density and morphology of apud cells in the intestinal mucosa of stomachless teleost fishes.method:by using the peroxidase antiperoxidase complex (pap) immunocytochemical staining technique the identification, localization and morphology of immunoreactive (ir) endocrine cells seattered in the intestinal mucosa of grass carp (cyenopharyngodon idellus), black carp ( mylopharyngodon piceus ) and common carp (cyprinus carpio) were investigated ... | 2000 | 11819532 |
| scanning electron microscopy of aspidogaster ijimai kawamura, 1913 and a. conchicola baer, 1827 (aspidogastrea, aspidogastridae) with reference to their fish definitive-host specificity. | two species of aspidogastreans, namely aspidogaster ijimai and a. conchicola, were studied by scanning electron microscopy. in nine lakes and an old river course, the tian'ezhou oxbow, investigated in the flood plain of the yangtze river, a. ijimai was obtained from the common carp ( cyprinus carpio) in three lakes, and a. conchicola from the black carp mylopharyngodon piceus in three lakes and the oxbow. in none of the localities, however, were the two species found together. it is suggested th ... | 2003 | 14564509 |
| feeding ecology and food composition of the black carp mylopharyngodon piceus and the grass carp ctenopharyngodon idella inhabiting the fish pond of al-abbassa fish hatchery with emphasis given to vector snails. | stomach contents of m. piceus and c. idella collected from earthen fish ponds at al-abbassa fish hatchery during different seasons were examined. food items were analyzed by three methods; the numerical (n%) percentage of point assessment (p%) and frequency of occurrence (f%). a comparison of the different methods emphasized the importance of snails as the major food resources in the diet of m. piceus during all seasons. during winter, stomachs of the most fish samples collected from fish ponds ... | 2004 | 15287186 |
| in vitro expression and antibody preparation of black carp (mylopharyngodon piceus) gh. | the cdna fragment encoding the mature polypeptide of growth hormone (gh) for the black carp (mylopharyngodon piceus) was pcr amplified and subcloned into pet-28a. the recombinant expression plasmid pet-bcgh was transformed into e.coli bl21(de3) and fusion polypeptide containing a 6xhis-tag at the n-terminus was expressed after iptg induction. the fusion protein band of 23 kda or so showed immunoreactivity to the polyclonal antibody aganist grass carp gh. the recombinant gh for black carp was pur ... | 2005 | 16257900 |
| occurrence of camallanus cotti in greatly diverse fish species from danjiangkou reservoir in central china. | two thousand four hundred fifty-eight fish comprised of 53 species were captured in the danjiangkou reservoir, in the northwestern part of hubei province, central china during 2004, to examine camallanus cotti infections. we found that 19 cypriniform, 3 siluriforme, and 4 perciforme fishes were infected by the nematode. our study revealed the species, hemiculter bleekeri bleekeri, culter oxycephaloide, pseudolaubuca sinensis, acanthobrama simony, mylopharyngodon piceus, ctenopharyngodon idella, ... | 2007 | 17351790 |
| derivation of aquatic predicted no-effect concentration (pnec) for 2,4-dichlorophenol: comparing native species data with non-native species data. | 2,4-dichlorophenol (2,4-dcp) is known as an important chemical intermediate and an environmental endocrine disruptor. there is no paper dealing with the predicted no-effect concentration (pnec) of 2,4-dcp, mainly due to shortage of chronic and site-specific toxicity data. in the present study, toxicity data was obtained from the tests using six chinese native aquatic species. the hc(5) (hazardous concentration for 5% of species) was derived based on the constructed species sensitivity distributi ... | 2011 | 21543105 |
| Derivation of predicted no effect concentrations (PNEC) for 2,4,6-trichlorophenol based on Chinese resident species. | 2,4,6-Trichlorophenol (2,4,6-TCP) is a common chemical intermediate and a by-product of water chlorination and combustion processes, and is a priority pollutant of the aquatic environment in many countries. Although information on the toxicity of 2,4,6-TCP is available, there is a lack of information on the predicted no-effect concentration (PNEC) of 2,4,6-TCP, mainly due to the shortage of chronic and site-specific toxicity data. In the present study, acute and sub-chronic toxicity of 2,4,6-TCP ... | 2012 | 21955353 |
| [overview of the artificial enhancement and release of endemic freshwater fish in china]. | due to declining fishery resources and the growing development of conservation aquaculture, artificial freshwater fish enhancement and releasing have begun to replace traditional means of recovering endemic and rare fish populations. artificial proliferation can be beneficial both to endemic fish conservation and technical bottleneck breakthroughs. this overview presents a review of the latest research and the underlying principles behind the conservation implementation processes, as well as the ... | 2013 | 23913882 |
| the effects of dietary carbohydrate on the growth, antioxidant capacities, innate immune responses and pathogen resistance of juvenile black carp mylopharyngodon piceus. | the present study was focused on the growth, antioxidant capacities, innate immune responses and pathogen resistance in juvenile black carp mylopharyngodon piceus fed with graded levels of dietary carbohydrate (cho) (0.6, 106.5, 194.3, 288.4, 379.1 and 473.8 g kg(-1)) for 9 weeks. results showed that highest weight gain and special growth ratio was obtained at 288.4 g kg(-1) dietary cho. and adequate dietary cho content (288.4 g kg(-1)) could significantly increase the activities of superoxide d ... | 2016 | 26723263 |
| use of black carp (mylopharyngodon piceus) in biological control of intermediate host snails of fish-borne zoonotic trematodes in nursery ponds in the red river delta, vietnam. | the risks of fish-borne zoonotic trematodes (fzt) to human health constitute an important problem in vietnam. the infection of humans with these trematodes, such as small liver trematodes (clonorchis sinensis and opisthorchis viverrini), intestinal trematodes (heterophyidae) and others is often thought to be linked to fish culture in areas where the habit of eating raw fish is common. juvenile fish produced in nurseries are often heavily infected with fzt and since fishes are sold to aquaculture ... | 2013 | 23680382 |
| mx1 of black carp functions importantly in the antiviral innate immune response. | mx (myxovirus resistance) is an important antiviral protein in the innate immune responses of vertebrates to microbial pathogens. in this study, we cloned and characterized mx1 of black carp (mylopharyngodon piceus). the full-length cdna of black carp mx1 (bcmx1) consists of 2781 nucleotides and the predicted bcmx1 protein contains 631 amino acids. bcmx1 contains a gtpase domain at the n-terminnus, a "central interactive domain" in the middle and a gtpase effector domain at the c-terminus. bcmx1 ... | 2016 | 27717902 |
| ifna of black carp is an antiviral cytokine modified with n-linked glycosylation. | type i interferons (ifns) play an important role in the antiviral immune response in teleost fish. in this study, one type i interferon (bcifna) of black carp (mylopharyngodon piceus) has been cloned and characterized. the full-length cdna of bcifna gene consists of 783 nucleotides and the predicted bcifna protein contains 185 amino acids. semi-quantitative rt-pcr analysis demonstrated that bcifna mrna transcription level in all the selected tissues of black carp was greatly increased at 33 h po ... | 2015 | 26208754 |
| predictable effects of dietary lipid sources on the fatty acids compositions of four 1-year-old wild freshwater fish from poyang lake. | the descriptors linking dietary and fish fatty acids (fas) compositions in four 1-year-old wild freshwater fish, mylopharyngodon piceus, ctenopharyngodon idella, hypophthalmichthys molitrix, and hypophthalmichthys nobilis, from poyang lake were studied. m. piceus mainly feeding on crustaceans had the highest relation of polyunsaturated fatty acids (pufas; r = 0.812) and odd-branched chain fatty acids (obcfas; r = 0.742) with spiral shells. correlations between c. idella (herbivore) and aquatic p ... | 2013 | 23181835 |