The possibility of maternal metal transfer to embryos was evaluated. Maternal transfer of flame retardants in sharks from the. 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. Morphology of the mechanosensory lateral line system in.
This study expands on methods previously published for captive maintenance of the lesser electric ray in large recirculating systems and outlines the husbandry. The karyotypes were derived by a squash technique from gill epithelial cells after specimen injection with colchicine. The spiracles are close behind the eyes, the nasal flaps are merged into a flap in front of the mouth. Request pdf feeding behavior and kinematics of the lesser electric ray, narcine brasiliensis elasmobranchii. Files are available under licenses specified on their description page. 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. On the electric powers and sex ratios of foetal narcine brasiliensis olfers volume 25, page 431. Frontiers molecular identification of shark meat from. The electrophysiology of electric organs of marine electric fishes the electrophysiology of electric organs of marine electric fishes bennett, m. Pdf electric organ morphology and function in the lesser. Artisanal fishery is one of the most important economic activities for human populations living in coastal areas.
Diet of the lesser electric ray narcine brasiliensis. Nocardiosis is a rare disease caused by infection with nocardia species, aerobic actinomycetes with a worldwide distribution. A baseline ecotoxicological study in the southeast atlantic and preliminary maternal transfer implications. In 1980, carlson and kelly produced a rabbit antiserum against highly purified synaptic vesicles from the electric organ of the ray narcine brasiliensis.
Toxic and essential metals in narcine brasiliensis. Distribution and abundance of the lesser electric ray. 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. Download as pptx, pdf, txt or read online from scribd.
A lifethreatening case of disseminated nocardiosis due to. The journal of cell biology jcb is a notforprofit publication, edited by scientists, and a leading life sciences journal. Afterwards, in 1988, maroteaux and coworkers used the same antiserum to screen a cdna library constructed with mrna. All structured data from the file and property namespaces is available under the creative commons cc0 license. And it is very informative and very clear and easy to understand. Although closely related to the large piscivorous torpedo rays, it differs in size, habitat, and prey. Narcinidae in southern brazil in relation to environmental factors. Although these vertebrates are mainly affected by unsustainable fishery activities, bycatch is also one of the major threats to sharks and batoids.
Density of the species was higher between the depths of 10 and 20 m, during the summer and autumn. This study aimed to analyse the knowledge of and utilization of fishes by the artisanal fishermen in a fishing community on the coast. Notes on the reproductive biology of the brazilian. Only the innervated surface is electrogenically reactive and the uninnervated surface has a low resistance, as in torpedo electroplaques. Probenecid, a gout remedy, inhibits pannexin 1 channels.
Composition of the stomach contents of 140 individuals of narcine brasiliensis from rio grande do sul, brazil, in february 2005. Narcine brasiliensis 17001880 print iconographia zoologica special collections university of amsterdam uba01 iz14200041. The traditional knowledge that fishermen have of fishes is of utmost importance for the establishment of conservation strategies for many species. A new species of electric ray of the genus narcine henle. Narcine is a genus of electric rays in the family narcinidae. Acetylcholine and atp are coreleased from the electromotor. Narcinidae south african journal of marine science. The lesser electric ray, narcine brasiliensis, is a small, demersal ray capable of generating electricity through its main and accessory electric organs. Slingshot feeding of the goblin shark mitsukurina owstoni. Download pdf download all download jpeg 2000 download text zoologica.
Narcine manta brasiliensis, birostris, skeleton of. Inhabits coastal waters, on sand or mud bottoms ref. Ethnotaxonomical considerations and usage of ichthyofauna. Common along sandy shorelines, sometimes near coral reefs ref. The strike velocities of the lesser electric ray narcine brasiliensis, which employs rapid suction feeding by the extreme jaw protrusion, were only 0. This nonhorizontal configuration is found in narkidae and narcine brasiliensis mceachran et al. Husbandry notes on the lesser electric ray dean 2005.
Although common circumglobally in the wild, this genus does not traditionally fare well in captivity. The tail is longer than the disc and has a lateral fold. Biologi laut marine fishes free download as powerpoint presentation. A guide to the study of fishes by david starr jordan president cf leland stanford with colored and frontispieces in two j uiilor. A new species of electric ray of the genus narcine henle, 1834 from the southwestern indian ocean chondrichthyes. The biodiversity heritage library works collaboratively to make biodiversity literature openly available to the world as part of a global biodiversity community. 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. A rare lifethreatening disseminated nocardia brasiliensis infection is described in an elderly, immunocompromised patient. The electrophysiology of electric organs of marine. The total length at maturity for females was 3189 mm and for males was 2798 mm. All rays were maintained in a 10 gallon aquarium for approximately 1 month, at which point half the cohort was transferred to another 10 gallon tank. Based on these differences, we hypothesized that the main electric organs are used for predator defense rather than feeding and that the.
The brazilian electric ray narcine brasiliensis is a species of electric ray in the family narcinidae. 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 jcb publishes papers on all aspects of cellular structure and function. Functional morphology of jaw trabeculation in the lesser electric ray narcine brasiliensis, with comments on the evolution of structural support in the. Areas of interest include, but are not restricted to, nuclear organization and structure, protein and membrane trafficking, signal transduction, cytoskeleton and molecular motors. The journal of biophysical and biochemical cytology, vol.
Batoidea jaw protrusion is a major functional motif in fish feeding and can occur. 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. Pdf distribution and abundance of the lesser electric. Fish played a key role in the studies in the 1980s that led to the discovery of the first synuclein syn sequence. Distribution and abundance of the lesser electric ray narcine brasiliensis olfers, 1831 elasmobranchii. Iring diagram ebook comprehensive metabolic panel zwiftitaly. The lesser electric ray, narcine brasiliensis, is a small, demersal ray capable. Probenecidsensitive transporters are widespread and are even found in plants 30, 31, 44, 52, 56. 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. 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. If you are generating a pdf of a journal article or book chapter, please feel free to enter the title and author. In the present study, toxic and essential metals in adult and embryonic n. The lesser electric ray narcine brasiliensis is a small member of the electric ray order torpediniformes elasmobranchii. Electric organ morphology and function in the lesser electric ray, narcine brasiliensis.
Microorganism was recovered from bronchial secretions and dermal lesions, and was identified using molecular assays. 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. 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. It inhabits reefs along the western coast of the atlantic ocean and the gulf of mexico from north carolina to northern argentina. Today, elasmobranchs are one the most threatened vertebrate groups worldwide. 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. Please let me know if you have any kind of recommendations or tips for brand new aspiring blog owners. Observations on the electric discharge of narcine brasiliensis olfers volume 28, page 45. Electric organ morphology and function in the lesser. In this report, two independent experimental approaches were taken to establish the source of ach released from the electromotor system of narcine brasiliensis. Genes free fulltext dna barcode reveals the bycatch.
Ten neonate narcine brasiliensis olfers 1831 were born in captivity at vassar college, poughkeepsie, ny, usa. Toxic and essential metals in narcine brasiliensis elasmobranchii. Ecological importance of sharks and rays in a structural. 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. Download pdf download all download jpeg 2000 download text. 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. This page was last edited on 18 january 2019, at 07. A karyotypic study has been made of three species of chondrichthyes of the order rajiformes. Cumulative prey curve for the lesser electric ray narcine brasiliensis caught off the coast of rio grande do sul during summer 2005.