| ontogeny of the bizarre: an osteological description of pipa pipa (anura: pipidae), with an account of skeletal development in the species. | the adult osteology of the direct-developing pipid frog, pipa pipa, is described based on cleared-and-stained and dry skeletal specimens. observations on skeletal development are based on cleared-and-stained embryos and young removed from the backs of preserved females. osteologically, p.pipa is distinguished from its congeners and other pipid anurans by its large size and peculiar skull, which is extremely depressed and hyperossified. skulls of the smallest individuals are not significantly dif ... | 2000 | 10629097 |
| characterization of insulin and atypically processed proglucagon-derived peptides from the surinam toad pipa pipa (anura:pipidae). | electrospray mass spectrometry was used to identify insulin, glucagon and two peptides related to glucagon-like peptide-1 (glp-1) in an extract of the pancreas of the surinam toad, pipa pipa, a species belonging to the same family as the african clawed frog, xenopus laevis. purification and characterization of the peptides established the primary structure of pipa insulin as a-chain: giveqcchss(10)ctllqletyc(20) n and b-chain: fsnqr lcgsh(10) lvealhlvcg(20) drgffyypka(30). this amino acid sequen ... | 2000 | 11072122 |
| aquatic feeding in pipid frogs: the use of suction for prey capture. | inertial suction feeding is the most common method of prey capture among aquatic vertebrates. however, it had been unclear whether the aquatic frogs in the family pipidae also used inertial suction for prey capture. in this study, we examined feeding behavior in four species of pipids, pipa pipa, xenopus laevis, hymenochirus boettgeri and pseudhymenochirus merlini. pressure in the buccopharyngeal cavity was measured during prey capture. these pressure measurements were coupled with high-speed re ... | 2010 | 20511513 |
| development of the ethmoidal structures of the endocranium in the anuran pipa pipa. | investigation of eight developmental stages by means of serial sections and subsequent graphic or wax model reconstructions, as well as by means of cleared-and-stained and dissected material, revealed that the ethmoidal endocranium in pipa pipa consists in early states of a single horizontal ethmoid plate lacking labial cartilages. later in the course of development, structures comparable with those in other anurans appear, though modified and of reduced size. these adult structures arise from t ... | 1989 | 29865644 |
| the suction mechanism of the pipid frog, pipa pipa (linnaeus, 1758). | most suction-feeding, aquatic vertebrates create suction by rapidly enlarging the oral cavity and pharynx. forceful enlargement of the pharynx is powered by longitudinal muscles that retract skeletal elements of the hyoid, more caudal branchial arches, and, in many fish, the pectoral girdle. this arrangement was thought to characterize all suction-feeding vertebrates. however, it does not exist in the permanently aquatic, tongueless pipa pipa, an amazonian frog that can catch fish. correlating h ... | 2017 | 28547886 |
| certain highly developed and phylogenetically significant hemisphere areas of the surinam toad (pipa pipa). | | 1967 | 6062247 |