Results 41 to 50 of about 6,079 (252)

Literature review of elasmobranch bycatch and retention rate

, 2015
To address growing concern over the effects of fisheries non-target catch on elasmobranchs worldwide, the accurate reporting of elasmobranch catch is essential.
Lewison, Rebecca, Jeffrey Moore (725916), James, Kelsey, Dillingham, Peter, Peter Dillingham (8011592), Curtis, Alexandra, Alexandra Curtis (6965396), Moore, Jeffrey, Kelsey James (8011586), Rebecca Lewison (8011589)   +9 more
core   +1 more source

Fishers' interactions with endangered “rhinorays” in Karimunjawa National Park, and factors influencing willingness to engage in pro‐conservation behavior

Conservation Science and Practice
The “rhinorays” (giant guitarfish‐Glaucostegidae and wedgefish‐Rhinidae) are a critically endangered group of “shark‐like rays,” which have experienced steep global population declines in the past decade due to overfishing.
Faqih Akbar Alghozali, Ashma Hanifah, Muhammad Wiralaga Dwi Gustianto, Maula Nadia, Taufiq Qur'rohman, Kinanti Amalia Niloperbowo, Diah P. Suyanto, Muhammad Ichsan, Andhika Prasetyo, Mahardika Rizqi Himawan, Hollie Booth   +10 more
doaj   +1 more source

Elasmobranch bycatch distributions and mortality: Insights from the European tropical tuna purse-seine fishery

Global Ecology and Conservation, 2020
Despite bycatch of elasmobranch (sharks and rays) being a major concern in most fisheries worldwide, there is a lack of knowledge on their spatio-temporal species distribution, biology (life stage and sex-ratios), as well as their at-haulback mortality ...
Lyndsay Clavareau, Philippe S. Sabarros, Lauriane Escalle, Pascal Bach, Francisco J. Abascal, Jon Lopez, Hilario Murua, Pedro J. Pascual Alayon, Maria Lourdes Ramos, Jon Ruiz, Bastien Mérigot   +10 more
doaj   +1 more source

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

The Anatomical Record, EarlyView.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti, Kenshu Shimada, João Paulo C. B. da Silva   +2 more
wiley   +1 more source

Early evolution of the gular musculature and its innervation in ray‐finned fishes

The Anatomical Record, EarlyView.
Abstract Gular muscles are an important but often overlooked component of cranial anatomy in bony fishes. They are located on the ventral surface of the head and are derived from the mandibular and hyoid arches. We present a comprehensive review of the gular musculature and its innervation across early diverging actinopterygian lineages. By integrating
Aléssio Datovo, Paulo Presti, George Vita, Murilo N. L. Pastana, Luiz A. W. Peixoto   +4 more
wiley   +1 more source

The pit organs of elasmobranchs: a review

Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 2000
Elasmobranchs have hundreds of tiny sensory organs, called pit organs, scattered over the skin surface. The pit organs were noted in many early studies of the lateral line, but their exact nature has long remained a mystery. Although pit organs were known to be innervated by the lateral line nerves, and light micrographs suggested that they were free ...
Peach, M. B., Marshall, N. J.
openaire   +5 more sources

Emerging research and priorities for elasmobranch conservation. [PDF]

, 2022
Over the past 4 decades there has been a growing concern for the conservation status of elasmobranchs (sharks and rays). In 2002, the first elasmobranch species were added to Appendix II of the Convention on International Trade in Endangered Species of ...
Lucifora, LO, Van Houtan, KS, Mangel, JC, Martins, APB, Shea, BD, Hutchinson, M, Mull, C, Ward-Paige, C, Micheli, F, McCauley, DJ, Pazmiño, DA, Cortés, E, Graham, RT, Cardeñosa, D, Worm, B, Caballero, S, Dulvy, NK, Queiroz, N, Andrzejaczek, S, Gilman, E, Heithaus, MR, Natanson, LJ, Roff, G, Britten, GL, Lowe, CG, Arnoldi, NS, Baum, JK, Simpfendorfer, CA, Chapple, TK, Butner, C, Pistevos, JCA, White, TD, MacKeracher, T, Jorgensen, SJ, Gallagher, AJ, Ferretti, F, Clarke, S, Harry, AV, Pauly, D, McClenachan, L, Godley, BJ, Fowler, S, Sims, DW, Alfaro-Shigueto, J, Block, B, Hammerschlag, N, Huveneers, C   +46 more
core   +1 more source

Environmental factors modulate the distribution of elasmobranchs in southern Mozambique

Frontiers in Marine Science
Investigating the spatiotemporal ecology of elasmobranchs is an important precursor to their effective management. Understanding long-term patterns in the movement and habitat use of threatened species can improve management plans so that they yield ...
Calum J. G. Murie, Calum J. G. Murie, Simon P. Oliver, Simon P. Oliver, Livia Gavard, Mario Lebrato, James Brown, Andrew Lawrence   +7 more
doaj   +1 more source

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

Fauna observed at elasmobranch carcasses.

, 2014
Fauna observed at elasmobranch carcasses.
Andrew R. Gates (130334), Daniel O. B. Jones (130339), Nicholas D. Higgs (560621)   +2 more
core   +1 more source