Results 61 to 70 of about 2,581 (229)
The Global Threat to Manta and Mobula Rays [PDF]
, 2010 Manta and mobula rays span the tropics of the world and are among the most captivating and charismatic of marine species. However, their survival is severely threatened by growing fisheries pressure driven by demand for the gill rakers that the animals ...
Shawn Heinrichs
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Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 12, December 2025.ABSTRACT Understanding the impact of human activities on fish communities is critical for the effective conservation of Amazonian ecosystems. In this study, we sampled environmental DNA (eDNA) from 17 sites (lakes and rivers) in two Peruvian national reserves, Pacaya‐Samiria and Allpahuayo‐Mishana, using a metabarcoding approach with four genetic ...
B. Prat +6 more
wiley +1 more source
Morphological and functional abnormality in the spiny butterfly ray Gymnura altavela [PDF]
, 2016 Background: A variety of abnormalities have been described for sharks, rays and skates across different ecoregions. Morphological and functional anomalies in these species, however, were not yet documented in distributions from the Canary Islands, the ...
Narváez, K., Osaer, F.
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Extreme diving behaviour in devil rays links surface waters and the deep ocean [PDF]
, 2014 © The Author(s), 2014. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Nature Communications 5 (2014): 4274, doi:10.1038/ncomms5274.Ecological connections between surface ...
Afonso, Pedro +6 more
core +2 more sources
Environmental DNA, Volume 7, Issue 5, September–October 2025.eDNA was used to assess whether there had been any impacts to an offshore demersal fish community. No major changes due to the seismic experiment were observed. When used in concert with baited remote underwater camera stations (BRUVS), a more comprehensive assessment of the fish community was obtained.
Conrad W. Speed +11 more
wiley +1 more source
Eutetrarhynchid trypanorhynchs (Cestoda) from elasmobranchs off Argentina, including the description of Dollfusiella taminii sp. n. and Parachristianella damiani sp. n., and amended description of Dollfusiella vooremi (São Clemente et Gomes, 1989) [PDF]
, 2014 During a parasitological survey of teleosts and elasmobranchs in the Argentine Sea, 3 species of eutetrarhynchids were collected from the batoids Myliobatis goodei Garman and Psammobatis bergi Marini, and the shark Mustelus schmitti Springer.
Andreeva, Elena +5 more
core +8 more sources
Universitas Scientiarum, 2022 Records about morphological abnormalities in rays of the genus Myliobatis are scarce worldwide. In the present study, three specimens exhibiting different malformations were identified during the monitoring of the reproductive biology of the Chilean ...
Miguel Valderrama Herrera +2 more
doaj +1 more source
Priabonian Sharks and Rays (Late Eocene: Neoselachii) From Minqar Tabaghbagh In The Western Qattara Depression, Egypt [PDF]
, 2012 http://deepblue.lib.umich.edu/bitstream/2027.42/90948/1/Contributions32no06-c04-30-2012 ...
Antar, Mohammad S.M. +5 more
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Acta Scientiarum: Biological Sciences, 2007 Potamotrygonidae constitui o único grupo recente de Chondrichthyes cujo habitat está restrito, exclusivamente, a águas continentais. Na planície de inundação do Alto rio Paraná, espécies desta família estabeleceram-se após o fechamento das comportas da ...
Antonio Guilherme Cândido da Silva +1 more
doaj
Rio Juruá: site 29 of Price’s expedition, and the first record of a Sebecidae (Notosuchia) for the Brazilian Solimões Formation [PDF]
Anais da Academia Brasileira de CiênciasThe Solimões Formation is one of the most fossiliferous units of the Neogene to Pleistocene of South America. Its rocks represent fluvial lacustrine Paleo-Amazon environments providing a rich record of paleovertebrate remains, including fishes (e.g ...
ANDRÉ E. PIACENTINI PINHEIRO +4 more
doaj +1 more source