Results 41 to 50 of about 310 (150)
Natura Croatica : Periodicum Musei Historiae Naturalis Croatici, 2021 We present demographic and reproductive parameters of commercially exploited shark, blackspotted smooth-hound (Mustelus punctulatus), based on samples from 117 males and 108 females from the Adriatic Sea. Calculated size and age at maturity were 83.1 cm in total length (TL) and 6.6 years for males and 100.0 cm TL and 12.5 years for females.
Gračan, Romana +2 more
openaire +4 more sources
Revealing elasmobranch diversity across the Cretaceous-Paleogene boundary in the Central Tethys (Byala, Bulgaria) [PDF]
Fossil RecordExtensive bulk-sampling of the continuous K-Pg succession at Byala (Central Tethys) provides high-resolution insights into elasmobranch responses to the end-Cretaceous mass extinction of a deep-marine environmental setting. The studied section represents
Iris Feichtinger +6 more
doaj +3 more sources
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 +6 more
wiley +1 more source
Diet of the smooth-hound, Mustelus mustelus (Chondrichthyes: Triakidae), in the eastern Adriatic Sea
Cybium, 2007 The diet of the smooth-hound, Mustelus mustelus, in the eastern Adriatic Sea was investigated with respect to fish size and season. Stomach contents of 139 specimens, 67 to 137 cm in TL, collected by bottom-trawl from 2001 to 2003 were analyzed. Of the total number of stomachs examined, 24 were empty (17.2%).
Jardas, Ivan +3 more
openaire +3 more sources
Brazilian Journal of Oceanography, 2007 A total number of 4824 Mustelus schmitti was sampled. Females ranged from 25 to 93 cm in spring and from 28 to 90 cm in summer. Males ranged from 34 to 82 and from 28 to 77 cm, respectively.
María Cristina Oddone +3 more
doaj +1 more source
Shearing Tooth Morphology May Allow Sharks to Access Higher Trophic Levels at Smaller Sizes
Ecology and Evolution, Volume 15, Issue 8, August 2025.Predator morphology imposes limitations on prey selection due to biomechanical constraints, making some prey functionally inaccessible and thereby constraining predator trophic niches. We assessed how two key components of trophic morphology—tooth shape and body size—affect prey selectivity and trophic niche in two sympatric sharks with contrasting ...
Sabrina Riverón +7 more
wiley +1 more source
Preliminary study on age, growth and reproduction of Mustelus mustelus (Elasmobranchii: Carcharhiniformes: Triakidae) inhabiting the Gulf of Iskenderun, north-eastern Mediterranean Sea [PDF]
Acta Ichthyologica et Piscatoria, 2018 Background. Shark populations within the eastern Mediterranean are declining due to overfishing. Unfortunately, our knowledge on the biology of sharks and specifically dogfishes within eastern Mediterranean is extremely limited due to the lack of ...
E.I. Ozcan, N. Başusta
doaj +3 more sources
Journal of Applied Ecology, Volume 62, Issue 6, Page 1392-1405, June 2025.Due to their higher performance and reliability, we consider SSDMs valuable for modelling unobserved discards and advise caution when using conditional joint prediction for continuous response variables such as biomass, especially when overdispersion is likely.
James A. Smith, Daniel D. Johnson
wiley +1 more source
Retention Bans Are Beneficial but Insufficient to Stop Shark Overfishing
Fish and Fisheries, Volume 26, Issue 3, Page 473-487, May 2025.ABSTRACT Sharks are among the most threatened groups of exploited fishes, comprising common bycatch across many fisheries. Management efforts intended to safeguard threatened species have increasingly focused on retention bans to reduce bycatch mortality. However, the population effects of such measures remain unevaluated across species.
Leonardo Manir Feitosa +7 more
wiley +1 more source
A Review of the Status of Sharks, Rays and Chimaeras of Panama to Guide Research and Conservation
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 4, April 2025.ABSTRACT Chondrichthyan fishes (sharks, rays and chimaeras) are a group of high conservation concern globally. Species are impacted by varying threats, although fishing pressure is the primary stressor causing population declines. Panama comprises both Pacific and Caribbean coastlines with a diversity of estuarine and marine habitats supporting small ...
Jorge Manuel Morales‐Saldaña +5 more
wiley +1 more source