Results 61 to 70 of about 2,860 (207)

Management Can Make Shark Fisheries Sustainable: Evidence From Long‐Term Surveys

Fisheries Management and Ecology, EarlyView.
ABSTRACT Sustainable management of shark fisheries is challenging because sharks are highly vulnerable to fishing mortality. By analysing data from three independent scientific surveys between the early 1970s and late 2000s across three fishing regions in southern Australia, we show that conservative fisheries management following severe depletion ...
Achmad N. Al Ashad, Terence I. Walker, Robert W. Day   +2 more
wiley   +1 more source

Some Pennsylvanian Chondrichthyan Spines from Nebraska [PDF]

, 1983
Fragmentary, dermal spines of Pennsylvanian chondrichthyans from Cass and Sarpy counties, Nebraska, are described. Forms that have been identified include the genera Acondylacanthus, Amelacanthus, Bythiacanthus, and Physonemus and an indeterminate ...
Maisey, John G.
core  

Famennian chondrichthyan microremains from Morocco and Sardinia

, 2008
New material from the Famennian of Morocco in the southern Maider comprises chondrichthyan teeth (Thrinacodus, Cobelodus, Denaea, Stethacanthus), actinopterygian remains (scales, teeth and hemilepidotrichium) and one acanthodian scale.
CORRADINI C, SPALLETTA C, PERRI M.C, DERYCKE-KHATIR C, Corradini C., SPALLETTA, CLAUDIA, Derycke Khatir C., PERRI, MARIA CRISTINA, Claire Derycke, Claudia Spalletta, Carlo Corradini, Maria Cristina Perri   +11 more
core   +1 more source

The effects of wear on the morphology and puncture force of shark teeth

Journal of Fish Biology, EarlyView.
Abstract Sharks continuously replace their teeth throughout their lives, replacing an entire row of teeth every one to 5 weeks. It has been hypothesized that this is due to tooth wear, rather than tooth breakage. However, little is known about how quickly teeth wear and what affect this wear has on tooth puncture performance.
Ryan L. Sesler, Lisa B. Whitenack
wiley   +1 more source

Nodular Lesions in the Pyloric Caeca of Sardinella aurita (Teleostei) Associated With the Cestode Anthobothrium sp. 1 Larvae (Platyhelminthes: Eucestoda) Off Tunisia, Mediterranean Sea

Journal of Fish Diseases, EarlyView.
ABSTRACT Examination of round sardinella Sardinella aurita Valenciennes, 1847 (Clupeidae) from the Gulf of Tunis (Tunisia) revealed the first local and Mediterranean record of Anthobothrium sp. 1 sensu Jensen & Bullard, 2010 (Tetraphyllidea incertae sedis, Anthobothrium).
Chiraz Ben Saad, Jean‐Lou Justine, Jihene Jouini, Delphine Gey, Stefan Theisen, Harry W. Palm, Lamia Gargouri   +6 more
wiley   +1 more source

Pectoral Morphology inDoliodus: Bridging the ‘Acanthodian’-Chondrichthyan Divide

, 2017
Maisey, John G., Miller, Randall, Pradel, Alan, Denton, John S.S., Bronson, Allison, Janvier, Philippe (2017): Pectoral morphology in Doliodus: bridging the 'acanthodian'-chondrichthyan divide.
John S.S. Denton, Pradel, Alan, John G. Maisey, Maisey, John G., Maisey, John, Bronson, Allison, Alan Pradel, Philippe Janvier, Allison Bronson, Janvier, Philippe, Denton, John S.S., Miller, Randall, Randall Miller   +12 more
core   +1 more source

A symmoriiform chondrichthyan braincase and the origin of chimaeroid fishes [PDF]

, 2017
Chimaeroid fishes (Holocephali) are one of the four principal divisions of modern gnathostomes (jawed vertebrates). Despite only 47 described living species1, chimaeroids are the focus of resurgent interest as potential archives of genomic data2 and for ...
Katharine E. Criswell, Gess, Robert W, John A. Finarelli, Coates, Michael I, Kristen Tietjen, Surname, Name - one for each creator, Michael I. Coates, Criswell, Katharine E, Tietjen, Kristen, Robert W. Gess, Finarelli, John A   +10 more
core   +1 more source

Modeling scale morphogenesis in a Devonian chondrichthyan and scale growth patterns in crown gnathostomes

, 2021
Early chondrichthyans (cartilaginous fishes) possess a rich record of scale fossils that have impacted on taxonomic and phylogenetic studies of early jawed vertebrates, but the significance of these scales remains elusive due to the lack of well-defined ...
Xindong Cui (8447586), Plamen S. Andreev (4682077), Qiang Li (8118), Qingming Qu (327698), Huijuan Mai (3778186), Min Zhu (168912)   +5 more
core   +1 more source

Using baited remote underwater videos (BRUVs) to characterize chondrichthyan communities in a global biodiversity hotspot - Fig 2

, 2019
Max N summed for all chondrichthyans species in each family over all BRUVs by (a,b) protection level in each region and (c,d) by habitat. (a, c) The most commonly observed chondrichthyan family, the scyliorhinid catsharks.
Julia K. Baum (8082281), Geoffrey J. Osgood (3377162), Meaghen E. McCord (8082278)   +2 more
core   +1 more source

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

The Anatomical Record, Volume 309, Issue 12, Page 3571-3587, December 2026.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti, Kenshu Shimada, João Paulo C. B. da Silva   +2 more
wiley   +1 more source