Results 81 to 90 of about 4,435 (179)

Friend or foe? The arrival of Stator limbatus (Bruchidae) in South Africa [PDF]

, 2013
Stator limbatus is a generalist seed-feeding beetle (Coleoptera: Bruchidae) whose natural range extends from the southern USA to Latin America. Individuals have recently been collected in the Western Cape province of South Africa in seeds of the invasive
Rink, Ariella
core   +1 more source

Speed‐dependent locomotor patterns during steady swimming in a demersal shark

Journal of Fish Biology, Volume 107, Issue 2, Page 394-405, August 2025.
Abstract Swimming ability is critical for navigating complex benthic habitats, yet the biomechanical strategies demersal sharks employ to modulate body and fin movements across varying speeds remain largely unexplored. This study examines speed‐dependent kinematic patterns in the small‐spotted catshark (Scyliorhinus canicula), a benthic species with ...
Fidji Berio, Camille Morerod, Valentina Di Santo   +2 more
wiley   +1 more source

A novel field method to distinguish between cryptic carcharhinid sharks, Australian blacktip shark Carcharhinus tilstoni and common blacktip shark C. limbatus, despite the presence of hybrids

, 2017
Multivariate and machine-learning methods were used to develop field identification techniques for two species of cryptic blacktip shark. From 112 specimens, precaudal vertebrae (PCV) counts and molecular analysis identified 95 Australian blacktip sharks
Lee, H (15587348), Ovenden, JR (15482318), Clive McMahon (14744029), Buckworth, RC (15660083), Morgan, JAT (15654923), Johnson, GJ (15670082)   +5 more
core   +2 more sources

Life history of the common blacktip shark, Carcharhinus limbatus, from central eastern Australia and comparative demography of a cryptic shark complex [PDF]

, 2019
Common and Australian blacktip sharks (Carcharhinus limbatus and Carcharhinus tilstoni) occur sympatrically in Australia, where they are reported as a complex because of their morphological similarities.
Geraghty, Pascal T., Geraghty, Pascal T, Harry, Alastair V., Morgan, Jess A T, Macbeth, William G., Morgan, Jess A. T., Taylor, Stephen M., Harry, Alastair V, Butcher, Paul A., Butcher, Paul A, Macbeth, William G, Morgan, Jess A.T., Taylor, Stephen M   +12 more
core   +2 more sources

How Fragmented Is eDNA? A Case Study on Shark DNA in Tropical Reef Seawater

Environmental DNA, Volume 7, Issue 4, July–August 2025.
This study quantified mitochondrial eDNA fragment lengths in offshore tropical seawater using qPCR assays targeting amplicons from 119 to 15,727 bp in tiger shark (Galeocerdo cuvier). Copy numbers steeply declined with increasing fragment size, with successful amplification up to 1518 bp and a calculated mean undamaged fragment size of 256 bp.
Katrina M. West, Bruce Deagle
wiley   +1 more source

Scaling of bite force corresponds with ontogenetic niche shifts in coastal elasmobranchs

Frontiers in Marine Science
IntroductionPredators, such as sharks, play important ecological roles in coastal ecosystems when abundant and these roles change over ontogeny. However, these shifts in ecological role are often not evaluated in light of feeding performance.
Joshua A. Cullen, Joshua A. Cullen, Christopher D. Marshall, Christopher D. Marshall   +3 more
doaj   +1 more source

Spatial patterns of the epipelagic species caught incidentally in the tuna fishery on floating objects, in the eastern Pacific Ocean

Ciencias Marinas, 2001
The spatial pattern of the fauna associated with floating objects in the eastern tropical Pacific (ETP) was analyzed. Different presence indexes for the groups of species caught incidentally in log sets were estimated, using information from the Inter ...
R Solana-Sansores
doaj   +1 more source

Patrones de residencia y uso de hábitat del tiburón “punta negra” Carcharhinus limbatus en las Islas Galápagos y la Isla del Coco [PDF]

, 2018
The blacktip shark (Carcharhinus limbatus) is a coastal shark species widely distributed in tropical and subtropical oceans around the world. Its global population is divided in separate subpopulations with particular characteristics, such as the poorly ...
Dávalos Malo, Nicolás Antonio
core  

Baseline Elemental Profile of Juvenile Sharks from a Multispecies Nursery Area off West Africa (Sal Rei Bay, Boa Vista Island, Cabo Verde)

Proceedings
Introduction: Establishing baseline descriptions of inorganic elements in the early life stages of sharks and in their respective nursery areas is essential for assessing anthropogenic impacts and supporting conservation strategies.
Marta Ramalho, Catarina Caldeira-Santos, Melanie Court, Jaquelino Varela, Bernardo Duarte, Rui Rosa   +5 more
doaj   +1 more source

Shark fisheries in Central America a review and update.

Uniciencia, 2000
La demanda por derivados del tiburón, especialmente aletas y cartílago, ha llevado a una expansión de las pesquerías y del comercio a través de la región. El incremento en el esfuerzo pesquero, las escasas referencias biológicas y la falta de manejo, son
José Rodrigo Rojas M., Jorge Campos M., Álvaro Segura, Moisés Mug V., Raúl Campos, Omar Rodríguez   +5 more
doaj