Reproductive biology and diet of the grey sharpnose shark Rhizoprionodon oligolinx Springer, 1964 (Chondrichthyes: Carcharhinidae) from the north-eastern Arabian Sea [PDF]
Journal of Fish Biology, 2017 Information on reproductive biology is presented for the grey sharpnose shark Rhizoprionodon oligolinx Springer, 1964 (Chondrichthyes: Carcharhiniformes), collected off the north-west coast of India in the Arabian Sea. A total of 711 individuals, of 27.0
Akhilesh, K V +8 more
core +3 more sources
Review of the Freshwater Sharks of Iran (Family Carcharhinidae)
International Journal of Aquatic Biology, 2015 The systematics, morphology, distribution, biology, economic importance and conservation of the bull shark (Carcharhinus leucas) in Iran are described, the species is illustrated, and a bibliography on this fish in Iran is provided.
Brian W. Coad
doaj +2 more sources
Effects of protection on large-bodied reef fishes in the western Indian Ocean. [PDF]
Conserv BiolAbstract Predatory and large‐bodied coral reef fishes have fundamental roles in the functioning and biodiversity of coral reef ecosystems, but their populations are declining, largely due to overexploitation in fisheries. These fishes include sharks, groupers, Humphead wrasse (Cheilinus undulatus), and Green Humphead parrotfish (Bolbometopon muricatum).
Samoilys M +4 more
europepmc +2 more sources
Limited Evidence for Depth Specialism in Isolated Seamount Reef Predators. [PDF]
Ecol EvolWe investigated how depth influences predatory fish assemblages on seamount reefs in the Coral Sea using remotely operated vehicle surveys across a 100 m depth gradient. Predator abundance and species richness declined significantly with depth; yet assemblage composition remained largely consistent, suggesting many taxa utilise a broad depth range ...
Cresswell BJ +7 more
europepmc +2 more sources
In Situ Thrust Measurement of Fish During Locomotion; Test Case: Sharks. [PDF]
Ecol EvolWe present a novel method that uses in situ video data of fish locomotion to calculate thrust. This methodology was applied to several large elasmobranch species, which are typically challenging to measure. Our findings indicate that coastal pelagic species exhibited lower scaled thrust than benthic species, suggesting that benthic species may be less ...
Payne B, Keller BA, Weihs D, Gurka R.
europepmc +2 more sources
Reconstructing historical catch trends of threatened sharks and rays based on fisher ecological knowledge. [PDF]
Conserv BiolAbstract Small‐scale fisheries often lack historical shark and ray catch information, hampering their management. We reconstructed historical catch trends and current fishing pressure by combining local ecological knowledge, satellite‐based vessel counts, and a short‐term landing‐site survey.
Leurs G +15 more
europepmc +2 more sources
Testicular Morphology and Spermatogenesis in Potamotrygon motoro: Insights Into Reproduction of Freshwater Stingrays. [PDF]
J MorpholElectron microscopy of Potamotrygon motoro spermatozoa. a – Illustration of a schematic sperm cell depicting the helical head, intermediate piece (midpiece), and flagellum. b ‐ Helical heads (Hh) of spermatozoa inserted into the cytoplasm of Sertoli cells (S) through openings in the plasma membrane. Scales: 10 μm.
Delgado MLR +6 more
europepmc +2 more sources
Unveiling the power of environmental DNA: A review of eDNA application to monitoring threatened fish in Indonesian Waters [PDF]
E3S Web of Conferences, 2023 This study examines environmental DNA (eDNA) techniques to detect and monitor threatened fish species in Indonesian waters. By analyzing 17 selected documents out of 284 papers and 310 metadata files, the study identified 30 Indonesian threatened fish ...
Kusumah Ruby Vidia +6 more
doaj +1 more source
Catch Composition, Seasonality, and Biological Aspects of Sharks Caught in the Ecuadorian Pacific
Diversity, 2022 Although sharks have a fundamental role in maintaining the balance of aquatic ecosystems, exerting a great influence on lower levels of the food chain, their populations are declining worldwide due, to a large extent, to overfishing.
Jesús Briones-Mendoza +2 more
doaj +1 more source