| comparative morphology of stingray lateral line canal and electrosensory systems. | elasmobranchs (sharks, skates, and rays) possess a variety of sensory systems including the mechanosensory lateral line and electrosensory systems, which are particularly complex with high levels of interspecific variation in batoids (skates and rays). rays have dorsoventrally compressed, laterally expanded bodies that prevent them from seeing their mouths and more often than not, their prey. this study uses quantitative image analysis techniques to identify, quantify, and compare structural dif ... | 2008 | 18655157 |
| functional consequences of structural differences in stingray sensory systems. part i: mechanosensory lateral line canals. | short range hydrodynamic and electrosensory signals are important during final stages of prey capture in elasmobranchs (sharks, skates and rays), and may be particularly useful for dorso-ventrally flattened batoids with mouths hidden from their eyes. in stingrays, both the lateral line canal and electrosensory systems are highly modified and complex with significant differences on ventral surfaces that relate to feeding ecology. this study tests functional hypotheses based on quantified differen ... | 2009 | 19749095 |
| functional consequences of structural differences in stingray sensory systems. part ii: electrosensory system. | elasmobranch fishes (sharks, skates and rays) possess highly sensitive electrosensory systems, which enable them to detect weak electric fields such as those produced by potential prey organisms. different species have unique electrosensory pore numbers, densities and distributions. functional differences in detection capabilities resulting from these structural differences are largely unknown. stingrays and other batoid fishes have eyes positioned on the opposite side of the body from the mouth ... | 2009 | 19749096 |
| anatomical comparison of the cephalic musculature of some members of the superfamily myliobatoidea (chondrichthyes): implications for evolutionary understanding. | this article describes the anatomy of the dorsal and ventral cephalic musculature of gymnura marmorata, g. micrura, aetobatus narinari, myliobatis californica, m. longirostris, rhinoptera steindachneri, mobula munkiana, and m. thurstoni. it was observed that muscles of the dorsal cephalic region showed little variation among species, with the exception of the dorsal longitudinal bundles and the cucullaris muscle. the ventral cephalic musculature showed wider differences, mainly in the depressor ... | 2003 | 12552642 |
| four new genera and five new species of lecanicephalideans (cestoda: lecanicephalidea) from elasmobranchs in the gulf of california, mexico. | a total of 53 spiral intestines from 3 species of rays collected in the gulf of california, baja, mexico, was examined for cestodes of the order lecanicephalidea. four new genera and 5 new species were discovered as a result of this study. these are aberrapex senticosus n. gen., n. sp., from myliobatis californica, paraberrapex manifestus n. gen., n. sp., from squatina californica and healyum harenamica n. gen., n. sp., healyum pulvis n. sp. and quadcuspibothrium francisi n. gen., n. sp., from m ... | 2001 | 11534651 |