A new species of electric ray of the genus narcine henle. In 1980, carlson and kelly produced a rabbit antiserum against highly purified synaptic vesicles from the electric organ of the ray narcine brasiliensis. Nocardiosis is a rare disease caused by infection with nocardia species, aerobic actinomycetes with a worldwide distribution. Cumulative prey curve for the lesser electric ray narcine brasiliensis caught off the coast of rio grande do sul during summer 2005. We also included in the analysis samples from sphyrna lewini n 4, pseudobatos horkelii n 2, rhizoprionodon lalandii n 1, narcine brasiliensis n 1, zapteryx brevirostris n 2, and gymnura altavela n 1, collected from fishing vessels and morphologically identified according to figueiredo 1977, to serve as controls for the. Narcine brasiliensis 17001880 print iconographia zoologica special collections university of amsterdam uba01 iz14200041. The tail is longer than the disc and has a lateral fold. Download pdf download all download jpeg 2000 download text zoologica. The biodiversity heritage library works collaboratively to make biodiversity literature openly available to the world as part of a global biodiversity community. Although common circumglobally in the wild, this genus does not traditionally fare well in captivity. And it is very informative and very clear and easy to understand. Biologi laut marine fishes free download as powerpoint presentation. These species have a rounded pectoral fin disc and two dorsal fins, the first usually smaller than the second and placed behind the pelvic fin bases. It inhabits reefs along the western coast of the atlantic ocean and the gulf of mexico from north carolina to northern argentina.
Only the innervated surface is electrogenically reactive and the uninnervated surface has a low resistance, as in torpedo electroplaques. Morphology of the mechanosensory lateral line system in. Although closely related to the large piscivorous torpedo rays, it differs in size, habitat, and prey. Download pdf download all download jpeg 2000 download text.
All structured data from the file and property namespaces is available under the creative commons cc0 license. In the present study, toxic and essential metals in adult and embryonic n. Application of an electric field changes the transport and optical properties of samarium nickelate submerged in water, making it a suitable passive sensor of weak electric fields in salt water. A guide to the study of fishes by david starr jordan president cf leland stanford with colored and frontispieces in two j uiilor. The traditional knowledge that fishermen have of fishes is of utmost importance for the establishment of conservation strategies for many species. Frontiers molecular identification of shark meat from.
Download as pptx, pdf, txt or read online from scribd. Pdf electric organ morphology and function in the lesser. The journal of cell biology jcb is a notforprofit publication, edited by scientists, and a leading life sciences journal. Functional morphology of jaw trabeculation in the lesser electric ray narcine brasiliensis, with comments on the evolution of structural support in the. Notes on the reproductive biology of the brazilian. Slingshot feeding of the goblin shark mitsukurina owstoni. The electrophysiology of electric organs of marine. Toxic and essential metals in narcine brasiliensis elasmobranchii. The electrophysiology of electric organs of marine electric fishes the electrophysiology of electric organs of marine electric fishes bennett, m. On the electric powers and sex ratios of foetal narcine brasiliensis olfers volume 25, page 431. The journal of biophysical and biochemical cytology, vol. Artisanal fishery is one of the most important economic activities for human populations living in coastal areas. Observations on the electric discharge of narcine brasiliensis olfers volume 28, page 45. This page was last edited on 18 january 2019, at 07.
Request pdf feeding behavior and kinematics of the lesser electric ray, narcine brasiliensis elasmobranchii. The lesser electric ray, narcine brasiliensis, is a small, demersal ray capable. Inhabits coastal waters, on sand or mud bottoms ref. Common along sandy shorelines, sometimes near coral reefs ref. This study provides information on the reproductive biology of narcine brasiliensis based on 105 individuals 72 females and 33 males sampled in sao paulo state, brazil. This study aimed to analyse the knowledge of and utilization of fishes by the artisanal fishermen in a fishing community on the coast. Studies on the electric organs of narcine brasiliensis and particularly of the responses of the electroplaques of the accessory organ confirm and amplify data obtained on the electroplaques of torpedo nobiliana.
Please let me know if you have any kind of recommendations or tips for brand new aspiring blog owners. Based on these differences, we hypothesized that the main electric organs are used for predator defense rather than feeding and that the. Acetylcholine and atp are coreleased from the electromotor. Fish played a key role in the studies in the 1980s that led to the discovery of the first synuclein syn sequence. A baseline ecotoxicological study in the southeast atlantic and preliminary maternal transfer implications. Although these vertebrates are mainly affected by unsustainable fishery activities, bycatch is also one of the major threats to sharks and batoids. A rare lifethreatening disseminated nocardia brasiliensis infection is described in an elderly, immunocompromised patient. Distribution and abundance of the lesser electric ray narcine brasiliensis olfers, 1831 elasmobranchii. Distribution and abundance of the lesser electric ray. Iring diagram ebook comprehensive metabolic panel zwiftitaly.
Today, elasmobranchs are one the most threatened vertebrate groups worldwide. Microorganism was recovered from bronchial secretions and dermal lesions, and was identified using molecular assays. This study expands on methods previously published for captive maintenance of the lesser electric ray in large recirculating systems and outlines the husbandry. The electric ray narcine brasiliensis is captured as bycatch along the brazilian coast and is considered data deficient by the international union for conservation of nature iucn. The torpedine electric fish narcine brasiliensis has two morphologically distinct electric organs main and accessory which also differ with respect to a number of electrophysiological properties. The lesser electric ray, narcine brasiliensis, is a small, demersal ray capable of generating electricity through its main and accessory electric organs. Probenecidsensitive transporters are widespread and are even found in plants 30, 31, 44, 52, 56.
Electric organ morphology and function in the lesser. The mechanism of action of the drug is inhibition of a renal tubular transporter, thereby facilitating the excretion of the disease causative uric acid by blocking reuptake 5, 26, 37. This nonhorizontal configuration is found in narkidae and narcine brasiliensis mceachran et al. In this report, two independent experimental approaches were taken to establish the source of ach released from the electromotor system of narcine brasiliensis. The spiracles are close behind the eyes, the nasal flaps are merged into a flap in front of the mouth. Maternal transfer of flame retardants in sharks from the. The fine structure of the electroplaques of these organs has been examined by electron microscopy and by a histochemical method for localizing esterase activity with a high degree of resolution. Narcine brasiliensis has canals on the dorsal surface with 1 pore per tubule branch, lacks a ventral canal system, and has 810 vesicles of savi in bilateral rows on the dorsal rostrum and numerous vesicles \\bar x 65 \pm 6\ sd per side on the ventral rostrum. The karyotypes were derived by a squash technique from gill epithelial cells after specimen injection with colchicine. Narcine manta brasiliensis, birostris, skeleton of.
Ten neonate narcine brasiliensis olfers 1831 were born in captivity at vassar college, poughkeepsie, ny, usa. Husbandry notes on the lesser electric ray dean 2005. Diet of the lesser electric ray narcine brasiliensis. In fact, at least 90% of elasmobranch species are listed in the international union for conservation of nature iucn red list, while more than 40% are datadeficient. Afterwards, in 1988, maroteaux and coworkers used the same antiserum to screen a cdna library constructed with mrna. Narcine brasiliensis narcine bancroftii length bp min max start codon stop codon at% length bp min max start codon stop codon at% trnaphe forward 70 1 70 70 1 70 12s rrna forward 972 75 1046 966 76 1. Electric organ morphology and function in the lesser electric ray, narcine brasiliensis.
Areas of interest include, but are not restricted to, nuclear organization and structure, protein and membrane trafficking, signal transduction, cytoskeleton and molecular motors. Batoidea jaw protrusion is a major functional motif in fish feeding and can occur. Since atp is colocalized with ach in the cholinergic vesicle, the exocytotic theory predicts the corelease of these two components with a stoichiometry identical to that of the vesicle. The total length at maturity for females was 3189 mm and for males was 2798 mm. Ethnotaxonomical considerations and usage of ichthyofauna. A karyotypic study has been made of three species of chondrichthyes of the order rajiformes. Ecological importance of sharks and rays in a structural. Narcinidae south african journal of marine science. The possibility of maternal metal transfer to embryos was evaluated. Narcinidae in southern brazil in relation to environmental factors. Density of the species was higher between the depths of 10 and 20 m, during the summer and autumn. The jcb publishes papers on all aspects of cellular structure and function.
A new species of electric ray of the genus narcine henle, 1834 from the southwestern indian ocean chondrichthyes. The strike velocities of the lesser electric ray narcine brasiliensis, which employs rapid suction feeding by the extreme jaw protrusion, were only 0. A lifethreatening case of disseminated nocardiosis due to. View enhanced pdf access article on wiley online library html view download pdf for offline viewing. Pdf distribution and abundance of the lesser electric. Toxic and essential metals in narcine brasiliensis. If you are generating a pdf of a journal article or book chapter, please feel free to enter the title and author. The brazilian electric ray narcine brasiliensis is a species of electric ray in the family narcinidae. Composition of the stomach contents of 140 individuals of narcine brasiliensis from rio grande do sul, brazil, in february 2005. Probenecid, a gout remedy, inhibits pannexin 1 channels.
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