| description of loraxichthys lexa, new genus and species (siluriformes: loricariidae) from the río huallaga basin, central peru, with notes on the morphology of the enigmatic lipopterichthys carrioni norman, 1935. | a new genus and species of armored catfish, loraxichthys lexa, collected in 1955 by the catherwood foundation peruvian-amazon expedition from the vicinity of tingo maría, huánuco, is described herein. loraxichthys is diagnosed by two uniquely derived characters: two to four robust evertible posterior cheek odontodes with hooked tips, longer than odontodes anterior to them but no more than twice their length; and skin folds on dorsal border along first pelvic-fin ray crenulated in mature males. l ... | 2013 | 26000436 |
| genetic structure in the amazonian catfish brachyplatystoma rousseauxii: influence of life history strategies. | the dorado or plateado (gilded catfish) brachyplatystoma rousseauxii (pimelodidae, siluriformes) is a commercially valuable migratory catfish performing the largest migration in freshwaters: from the amazonian headwaters in the andean foothills (breeding area) to the amazon estuary (nursery area). in spite of its importance to inform management and conservation efforts, the genetic variability of this species has only recently begun to be studied. the aim of the present work was to determine the ... | 2014 | 25038864 |
| two new genera of fish blood flukes (digenea: aporocotylidae) from catfishes in the peruvian amazon. | cladocaecum tomasscholzi n. gen., n. sp. infects the heart (lumen of ventricle) of driftwood catfish, ageneiosus inermis linnaeus, 1766 (siluriformes: auchenipteridae) from the nanay river (amazon river basin, near iquitos, peru). it differs from all other aporocotylid genera by having a highly branched intestine comprising a central cecum that terminates immediately anterior to the ovary and that has numerous laterally directed diverticula. kritsky platyrhynchi ( guidelli, isaac, and pavanelli, ... | 2016 | 26859799 |
| tapeworms (cestoda: proteocephalidea) of firewood catfish sorubimichthys planiceps (siluriformes: pimelodidae) from the amazon river. | a survey of proteocephalidean cestodes found in the firewood catfish sorubimichthys planiceps (spix et agassiz) from the amazon river is provided. the following taxa parasitic in s. planiceps are redescribed on the basis of their type specimens and material collected recently in the amazon river, near the type localities in brazil, and in iquitos, peru: monticellia lenha woodland, 1933; nomimoscolex lenha (woodland, 1933) (syn. proteocephalus lenha woodland, 1933); and monticellia megacephala wo ... | 2008 | 18578164 |
| new species of demidospermus (monogenea: dactylogyridae) of pimelodid catfish (siluriformes) from peruvian amazonia and the reassignment of urocleidoides lebedevi kritsky and thatcher, 1976. | three new species of demidospermus suriano, 1983 were found in mixed infections on the gills of 4 pimelodid catfish collected in the amazon river basin around iquitos, peru, namely, demidospermus peruvianus n. sp. from pimelodus ornatus kner, pimelodus blochii valenciennes, pimelodus sp. (type host), and an unidentified pimelodid. demidospermus peruvianus n. sp. (type host, pimelodus sp.) is characterized by the presence of the male copulatory organ with 2 lateral, thickened projections, and the ... | 2011 | 21506840 |
| life-history characteristics of the large amazonian migratory catfish brachyplatystoma rousseauxii in the iquitos region, peru. | the main life-history traits of the dorado brachyplatystoma rousseauxii, a large amazonian catfish undertaking the largest migration known for a freshwater fish species (from the nursery area in the estuary of the amazon to the breeding zones in the head waters of the western amazon basin close to the andes), were determined from a 5 year sampling of >15,000 specimens in the peruvian amazon. the breeding season occurred during the falling and low-water periods, which is hypothesized to be an ada ... | 2009 | 20738506 |