Results 51 to 60 of about 2,170 (202)

Neogene Caribbean elasmobranchs: diversity, paleoecology and paleoenvironmental significance of the Cocinetas Basin assemblage (Guajira Peninsula, Colombia) [PDF]

Biogeosciences, 2019
The Cocinetas Basin is located on the eastern flank of the Guajira Peninsula, northern Colombia (southern Caribbean). During the late Oligocene through the Pliocene, much of the basin was submerged.
J. D. Carrillo-Briceño, J. D. Carrillo-Briceño, Z. Luz, A. Hendy, L. Kocsis, O. Aguilera, T. Vennemann   +6 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., Gingerich, Philip D., Hatab, El-Bialy E., Metwally, Mamoud H., Shafy, Ezzat Abd-El, Zalmout, Iyad Saleh   +5 more
core  

The Overlooked Threat of Global Warming on Elasmobranch Fertility

Fish and Fisheries, Volume 27, Issue 1, Page 41-55, January 2026.
ABSTRACT Climate change is increasingly recognised as a critical threat to global biodiversity, yet its impacts on reproductive processes remain poorly understood in many marine taxa. Elasmobranchs (sharks, skates and rays) represent a particularly vulnerable group due to their peculiar life histories, low fecundity, and diverse reproductive modes.
Noémie Coulon, Eric Feunteun, Alexandre Carpentier, Anne Lizé   +3 more
wiley   +1 more source

Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 43 [PDF]

, 1980
A new species of stingray, Hexatrygon bickelli Heemstra and Smith, is described from a specimen washed up on a beach at Port Elizabeth on the south coast of South Africa. This new species differs from all other batoid fishes in having six gill arches and
Heemstra, Phillip C, Smith, Margaret Mary   +1 more
core   +1 more source

Molecular phylogeny, including a new species of Anindobothrium (Cestoda, Rhinebothriidea) from the Southern eagle ray Myliobatis goodei, finally solves the taxonomic enigma of Phyllobothrium myliobatidis [PDF]

Zoosystematics and Evolution
During a parasitological survey of tapeworms from Myliobatis goodei Garman, 1885 (Myliobatiformes: Myliobatidae) in coastal waters off Argentina in the Southwestern Atlantic, a new rhinebothriidean cestode species, Anindobothrium danielae sp.
Guillermina García Facal, Sebastián Franzese, Martín Miguel Montes, Adriana Menoret   +3 more
doaj   +3 more sources

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
core  

Length–Weight and Condition Factor of 14 Elasmobranch Species Caught as Bycatch by Artisanal Shrimp Trawls in a Coastal Lagoon System From Northwest Mexico

Journal of Applied Ichthyology, Volume 2026, Issue 1, 2026.
The lack of biometric data on chondrichthyan species has impeded the implementation of management strategies essential for the conservation of sharks and rays captured using different fishing gears in coastal ecosystems. This study aims to assess morphometric relationships (length–weight [LW], length–dorsal length [DL], and length–disc width [DW]) and ...
Adrián Felipe González-Acosta, Carlos Hiram Rábago-Quiroz, Gorgonio Ruiz-Campos, Juan Antonio García-Borbón, María del Carmen Alejo-Plata, Joaquín David Magaña, Upali S. Amarasinghe   +6 more
wiley   +1 more source

Population Structure of Aetobatus narinari (Myliobatiformes) Caught by the Artisanal Fishery in Northeast Brazil

Diversity
In Brazil, the Whitespotted Eagle Ray Aetobatus narinari is considered data-deficient due to the scarcity of basic information on its biology, ecology, and vulnerability to capture.
Priscila R. V. Araújo, Bautisse D. Postaire, Kevin A. Feldheim, Kim Bassos-Hull, Rosangela Lessa, Matthew J. Ajemian   +5 more
doaj   +1 more source

Anthropogenic Factors Drive the Depletion of Fish Functional Β Diversity Within and Outside Two National Reserves in the Peruvian Amazon

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, C. Mariac, J.‐F. Renno, C. García‐Dávila, C. Angulo, G. Estivals, F. Duponchelle   +6 more
wiley   +1 more source

Myliobatiformes Compagno 1973

Myliobatiformes indet. Plate 7, Figs 11–27 Material. 111 isolated teeth and tooth fragments. NHMW 2025/0177/0031 (18). Description. A selection of various isolated and poorly preserved teeth is given here (Pl. 7, figs 11–24) to show the large interspecific variability that is known among this group. Discussion. Both for lateral teeth (Pl. 7, figs 25–26)
Landau, Bernard. M., Hovestadt, Dirk C., Da Silva, Carlos M.   +2 more
openaire   +1 more source