Results 41 to 50 of about 17,330 (286)

Fatal Hemorrhagic Septicemia in Common Guitarfish (Rhinobatos rhinobatos) Caused by Photobacterium damselae Subsp. damselae in a Controlled Environment. [PDF]

J Fish Dis
ABSTRACT Elasmobranchs, including sharks and rays, are commonly housed in public aquariums due to their ecological significance and educational value. The common guitarfish (Rhinobatos rhinobatos), currently listed as ‘Critically Endangered’ by the IUCN, is particularly susceptible to population declines due to overfishing and bycatch.
Bignami G, Pirollo T, Tedesco P, Caffara M, Fioravanti ML, Campesi E, Da Rugna C, Gridelli S, Quaglio F, Gustinelli A.   +9 more
europepmc   +2 more sources

Age and growth of the highly exploited narrownose smooth-hound (Mustelus schmitti) (Pisces: Elasmobranchii) [PDF]

, 2017
The narrownose smoothhound (Mustelus schmitti) is the most exploited elasmobranch of Argentina, Brazil, and Uruguay and is considered endangered (IUCN Red List of Threatened Species).
Blasina, Gabriela Elizabeth, Lopez Cazorla, Andrea Cecilia, Molina, Juan Manuel   +2 more
core   +1 more source

Evidence for the first multi-species shark nursery area in Atlantic Africa (Boa Vista Island, Cabo Verde)

Frontiers in Marine Science, 2023
This study describes the first potential multi-species shark nursery area in Atlantic Africa (Sal Rei Bay – SRB, Boa Vista Island, Cabo Verde). From August 2016 to September 2019, 6162 neonates and juveniles of 5 different shark species were observed in ...
Rui Rosa, Rui Rosa, Rui Rosa, Emanuel Nunes, Emanuel Nunes, Vasco Pissarra, Vasco Pissarra, Catarina Pereira Santos, Catarina Pereira Santos, Catarina Pereira Santos, Jaquelino Varela, Jaquelino Varela, Miguel Baptista, Joana Castro, Joana Castro, José Ricardo Paula, José Ricardo Paula, Tiago Repolho, Tiago Repolho, Tiago A. Marques, Tiago A. Marques, Tiago A. Marques, Rui Freitas, Catarina Frazão Santos, Catarina Frazão Santos, Catarina Frazão Santos, Catarina Frazão Santos   +26 more
doaj   +1 more source

Foliculogénesis Ovárica en la Raya Marmorada, Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes, Rajidae) [PDF]

, 2011
Los Condrictios se han convertido en un recurso económico importante en las últimas décadas, siendo Argentina uno de los países que más explota tiburones y rayas, incluso a niveles que exceden los límites de varias especies.
Díaz Andrade, María Constanza, Estecondo, Silvia, Galíndez, Elena Juana, Lopez Cazorla, Andrea Cecilia   +3 more
core   +1 more source

Plasma 1α-Hydroxycorticosterone as Biomarker for Acute Stress in Catsharks (Scyliorhinus canicula)

Frontiers in Physiology, 2019
Glucocorticoids are pleiotropic steroid hormones mediating redistribution of energy. They induce breakdown of glycogen stores and consequent plasma hyperglycaemia after stressful situations.
Ignacio Ruiz-Jarabo, Cristina Barragán-Méndez, Ismael Jerez-Cepa, Miriam Fernández-Castro, Ignacio Sobrino, Juan M. Mancera, Johan Aerts, Johan Aerts   +7 more
doaj   +1 more source

Bycatch Estimates From a Pacific Tuna Longline Fishery Provide a Baseline for Understanding the Long-Term Benefits of a Large, Blue Water Marine Sanctuary

Frontiers in Marine Science, 2021
Bycatch on pelagic tuna longlines has contributed to population declines in several far-ranging, oceanic species and presents a conservation challenge that area-based management tools are increasingly promoted to address.
Vanessa Jaiteh, Vanessa Jaiteh, Tom Peatman, Tom Peatman, Steve Lindfield, Eric Gilman, Simon Nicol, Simon Nicol   +7 more
doaj   +1 more source

Geometric factors influencing the diet of vertebrate predators in marine and terrestrial environments [PDF]

, 2014
Predator–prey relationships are vital to ecosystem function and there is a need for greater predictive understanding of these interactions. We develop a geometric foraging model predicting minimum prey size scaling in marine and terrestrial vertebrate ...
Bielby, Jon, Carbone, Chris, Clauss, Marcus, Codron, Daryl, Enquist, Brian, Scofield, Conrad   +5 more
core   +1 more source

A new species of Dermopristis Kearn, Whittington & Evans-Gowing, 2010 (Monogenea: Microbothriidae), with observations on associations between the gut diverticula and reproductive system and on the presence of denticles in the nasal fossae of the host Glaucostegus typus (Bennett) (Elasmobranchii: Rhinobatidae) [PDF]

, 2011
Dermopristis cairae n. sp. (Microbothriidae) is described from the skin and possibly from the nasal fossae of the giant shovelnosed ray Glaucostegus typus (Bennett). The new species is distinguished from D.
EM Perkins, EW Price, GC Kearn, GC Kearn, GC Kearn, GC Kearn, GC Kearn, Graham C. Kearn, Ian D. Whittington, ID Whittington, M Beverley-Burton, NG Sproston, RL Abel, T Tappenden, V Glennon   +14 more
core   +1 more source

An integrated approach to tackling wildlife crime: Impact and lessons learned from the world's largest targeted manta ray fishery

Conservation Science and Practice, 2021
Manta rays (Mobula birostris and M. alfredi) are threatened by overexploitation for international trade. Indonesia was home to the world's largest documented manta fishery—Lamakera, in East Nusa Tenggara.
Hollie Booth, Ulfah Mardhiah, Hanifah Siregar, Jonathan Hunter, Giyanto, Mochamad Iqbal Herwata Putra, Jo Marlow, Andi Cahyana, Boysandi, Apolinardus Yosef Lia Demoor, Sarah Lewis, Dwi Adhiasto, Luky Adrianto, Irfan Yulianto   +13 more
doaj   +1 more source

Conservation Biology of Elasmobranchs [PDF]

, 1993
Elasmobranchs are vital and valuable components of the marine biota. From an ecological perspective they occupy the role of top predators within marine food webs, providing a regulatory control that helps balance the ecosystem.

core