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Cause and consequences of Common Snook (Centropomus undecimalis) space use specialization in a subtropical riverscape.
Sci Rep
January 2025
Institute of Environment, Florida International University, Miami, FL, 33199, USA.
Variability in space use among conspecifics can emerge from foraging strategies that track available resources, especially in riverscapes that promote high synchrony between prey pulses and consumers. Projected changes in riverscape hydrological regimes due to water management and climate change accentuate the need to understand the natural variability in animal space use and its implications for population dynamics and ecosystem function. Here, we used long-term tracking of Common Snook (Centropomus undecimalis) movement and trophic dynamics in the Shark River, Everglades National Park from 2012 to 2023 to test how specialization in the space use of individuals (i.
View Article and Find Full Text PDFMicrobothriid (Monogenean) Infection and Treatment in Captive Blacktip Reef Shark ().
Microorganisms
December 2024
Laboratory of Aquatic Biomedicine, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.
Unlike other microbothriid monogenean infections in elasmobranchs, limited information is available on the biology and treatment of . As parasitic infection with was found in 21 juvenile blacktip reef sharks () at the Lotteworld aquarium in Seoul, South Korea, we aimed to investigate the anatomical features and treatment protocols for in this study. The parasites were sampled and fixed in 10% neutral-buffered formalin, and examined using light and scanning electron microscopy.
View Article and Find Full Text PDFBD-freshwater-fish: An image dataset from Bangladesh for AI-powered automatic fish species classification and detection toward smart aquaculture.
Data Brief
December 2024
Faculty of Agricultural Engineering and Technology, Sylhet Agricultural University, Bangladesh.
There are about 33,000 different species of fish and they are visually identified using variety of traits, i.e., size and shape of body, head's size and shape, skin pattern, fin pattern, mouth pattern, scale pattern, and eye pattern etc.
View Article and Find Full Text PDFSharks and Rays of Northern Australia's Roper River, with a Range Extension for the Threatened Speartooth Shark .
Animals (Basel)
November 2024
Research Institute for the Environment and Livelihoods (RIEL), Charles Darwin University, Ellengowan Drive, Darwin, NT 0810, Australia.
Northern Australia is considered a 'lifeboat' region for globally threatened shark and ray species (elasmobranchs), although much of the region is understudied. The Roper River in the Northern Territory's Gulf of Carpentaria has been inadequately surveyed, with most elasmobranch data gained opportunistically through freshwater fish surveys. This study aimed to report the occurrence of elasmobranch species in the Roper River through targeted field surveys conducted between 2016 and 2024 and to review data from other sources.
View Article and Find Full Text PDFArticle Synopsis
- - A rare, critically endangered adult angular rough shark was captured, displaying unusual pale coloration with white-greyish patches due to partial pigmentation reduction, identifying it as leucistic.
- - This case marks the first recognized instance of leucism in this species and the first reported color disorder in the Oxynotidae family.
- - Despite its unusual appearance, the shark's overall health was unaffected, indicating that pigment disorders in deep-sea sharks may not impact their survival or growth, with no significant differences noted when compared to a normally pigmented shark of the same sex from the same region.
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