Results 31 to 40 of about 384 (156)

Macroscopic Examination of Cownose Rays (Rhinoptera bonasus)

Journal of Anatolian Environmental and Animal Sciences, 2022
The cownose ray, Rhinoptera bonasus, is currently listed as vulnerable and threatened species by the IUCN Red List due to overfishing and bycatch in worldwide resulted declines of the steep population declines of 30-49% in only 43 years. We aimed to present suitable dissection methods for a necropsy of cownose ray with a large, rhomboid-shaped wing ...
Süzer, Bayram, Yalgın, Ferhat, Satıcıoğlu, İzzet Burçin, Taşkın, Merve, Yavaş, Özkan, Duman, Muhammed, Yalgın, Ferhat   +6 more
openaire   +2 more sources

Genome-Wide DNA Methylation Patterns Predict Age in the Zebra Shark (Stegostoma tigrinum) and Provide Insight Into the Evolution of Vertebrate Aging. [PDF]

Mol Ecol
ABSTRACT Epigenomic changes are a hallmark of aging, and DNA methylation (DNAm) has emerged as the most reliable molecular marker of an individual's age. Genome‐wide patterns of age‐associated hypo‐ and hypermethylation have been applied to generate predictive models (i.e., “epigenetic clocks”) capable of estimating chronological age in an increasingly
Bock SL, Lyons K, Yang L, Wyffels J, Adams L, Klerks N, Jeskie A, Leever E, Hartl T, Almunia J, Peterson D, Ferreira A, Okamoto J, Archibald K, Spaulding C, Leyden K, Montano GA, Vasey S, Rowland A, Watson L, Lopez A, Hemdal J, Stafford M, Bronikowski A, Naylor GJP, Parrott BB.   +25 more
europepmc   +2 more sources

Intensive Commercialization of Endangered Sharks and Rays (Elasmobranchii) Along the Coastal Amazon as Revealed by DNA Barcode

Frontiers in Marine Science, 2021
Elasmobranchs represent a well-defined group, composed of about 1,150 species inhabiting diverse aquatic environments. Currently, several of these species have been classified as threaten due to overexploitation.
Thais Martins, Paula Santana, Ítalo Lutz, Raimundo da Silva, Aurycéia Guimarães-Costa, Marcelo Vallinoto, Iracilda Sampaio, Grazielle Evangelista-Gomes   +7 more
doaj   +1 more source

Juvenile Striped Bass consume diverse prey in Chesapeake Bay tributaries

Marine and Coastal Fisheries, Volume 15, Issue 5, October 2023., 2023
Abstract Objective Anadromous Striped Bass Morone saxatilis are dominant predators in estuaries and coastal areas along the U.S. Atlantic coast, with the potential to exert top‐down control on prey populations. Although Striped Bass diets have been studied previously, spatiotemporal patterns of diet across ontogeny remain poorly understood, especially ...
Katrina M. Pagenkopp Lohan, Robert Aguilar, Ruth DiMaria, Keira Heggie, Troy D. Tuckey, Mary C. Fabrizio, Matthew B. Ogburn   +6 more
wiley   +1 more source

Use of a nursery area by cownose rays (Rhinopteridae) in southeastern Brazil

Neotropical Ichthyology, 2018
Using non-lethal methods for data collection of individuals and participatory monitoring by fishermen, we provide the first empirical evidence of the use of a nursery area by neonate and young-of-the-year cownose rays Rhinoptera bonasus and R ...
Bianca S. Rangel, Alexandre Rodrigues, Renata G. Moreira   +2 more
doaj   +1 more source

Diamond Gymnura natalensis and duckbill Aetomylaeus bovinus rays undertake nationwide coastal migrations. [PDF]

J Fish Biol
Abstract Migration is a critical aspect of ocean ecosystems, and understanding this phenomenon answers ecological and management questions. Given the difficulty in tracking ocean animals across large distances, the extent to which different ray species perform long‐distance movements, such as migrations, remains unknown.
Elston C, Murray TS, Rogers T, Parkinson MC, Mann BQ, Daly R, Filmalter JD, Cowley PD.   +7 more
europepmc   +2 more sources

FROZEN STORAGE CHARACTERISTICS OF COWNOSE RAY (RHINOPTERA BONASUS)

Journal of Food Quality, 1988
ABSTRACT Frozen‐stored (‐18°C) vacuum‐packed portions ofcownose ray (Rhinoptera bonasus) flesh, periodically analyzed for quality by chemical tests for ammonia nitrogen, pH, peroxide value, TBA content, extractable protein nitrogen, and by sensory methods, were still acceptable after 60 weeks.
JOSEPH J. LICCIARDELLO, ELINOR M. RAVESI
openaire   +1 more source

The distribution of a rarely encountered stingray, Megatrygon microps, informed by citizen science: A systematic review

Conservation Science and Practice, Volume 8, Issue 5, May 2026.
This study combines literature and online data sources to expand the smalleye stingray's range, highlight ecological interactions and specific threats. Abstract Many chondrichthyan fishes are experiencing alarming population declines primarily due to overfishing, exacerbated by their inherently vulnerable life history traits including slow growth rates
Jennifer Ann Keeping, Artemis Caine, Charlotte Hopkins, David Bailey, Andrew Chin   +4 more
wiley   +1 more source

Sympatric elasmobranchs and fecal samples provide insight into the trophic ecology of the smalltooth sawfish

Endangered Species Research, 2017
Growing concerns about the conservation of elasmobranchs have prompted a surge in research, because scientific studies that can support management actions are needed. Sawfishes are among the most threatened fishes worldwide and epitomize the challenge of
Poulakis, GR, Urakawa, H, Stevens, PW, DeAngelo, JA, Timmers, AA, Grubbs, RD, Fisk, AT, Olin, JA   +7 more
doaj   +1 more source

Relações filogenéticas do gênero Rhinoptera Van Hasselt, 1824 com ênfase nas espécies do Atlântico Sul Ocidental [PDF]

, 2022
Rays of the family Rhinopteridae Bonaparte, 1835 are highly migratory and are distributed in warm waters in tropical and temperate seas. The Brazilian coast records the occurrence of 2 species, Rhinoptera bonasus and Rhinoptera brasiliensis, which, due ...
CUNHA, Yasmim Trindade Carneiro da
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