Results 41 to 50 of about 5,132 (191)
Fishes, 2022 Sharks belong to the most primitive group of jawed vertebrates and have some special structural and functional features such as a cartilaginous skeleton, a spiral intestinal valve, and a rectal gland for osmoregulation.
Giampaolo Bosi +3 more
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Biology and ecology of four catshark species in the southwestern Cape, South Africa [PDF]
, 2002 Bibliography : leaves 98-109.This is the first biological study of four endemic catshark species, Haploblepharus edwardsii, H. pictus, Poroderma africanum and P. pantherinum, from the southwestern Cape.
Dainty, Alison M
core +1 more source
Animals, 2021 Despite the growing interest in human-made noise effects on marine wildlife, few studies have investigated the potential role of underwater noise on elasmobranch species.
Giovanni de Vincenzi +9 more
doaj +1 more source
Two's company: Monozygotic twinning in the small-spotted catshark (Scyliorhinus canicula). [PDF]
J Fish BiolAbstractDevelopmental abnormalities in elasmobranchs (sharks and rays) are rarely documented, with reported cases primarily involving fin or cranial deformities. Monozygotic twinning, the formation of identical twins from a single zygote, is particularly rare in these species and has been observed overwhelmingly in viviparous elasmobranchs.
Gajić AA +6 more
europepmc +3 more sources
Quagga Catshark Halaelurus quagga [PDF]
, 2017 The Quagga Catshark (Halaelurus quagga) is a poorly-known catshark recorded from very few specimens. It has a fragmented known distribution occurring off southwestern India, and around the Socotra Archipelago (Yemen). This small shark (reaching ~37 cm
Akhilesh, K V +3 more
core +1 more source
A Developmental Study of the Cerebellar Nucleus in the Catshark, a Basal Gnathostome
Brain, Behavior and Evolution, 2017 The output of the cerebellar cortex is mainly released via cerebellar nuclei which vary in number and complexity among gnathostomes, extant vertebrates with a cerebellum. Cartilaginous fishes, a basal gnathostome lineage, show a conspicuous, well-organized cerebellar nucleus, unlike ray-finned fishes.
Pose-Méndez, Sol +4 more
openaire +3 more sources
Plasma 1α-Hydroxycorticosterone as Biomarker for Acute Stress in Catsharks (Scyliorhinus canicula) [PDF]
Frontiers in Physiology, 2019 Glucocorticoids are pleiotropic steroid hormones mediating redistribution of energy. They induce breakdown of glycogen stores and consequent plasma hyperglycaemia after stressful situations. Glucocorticoid actions in most vertebrate species are exerted by cortisol and corticosterone.
Ignacio Ruiz-Jarabo +7 more
openaire +5 more sources
FishesIn recent years, there has been an increase in the reporting of plastic pollution in the marine environment and its effects on marine animals, especially bony fish.
Susana Torres +4 more
doaj +1 more source
Novel developmental bases for the evolution of hypobranchial muscles in vertebrates
BMC Biology, 2020 Background Vertebrates are characterized by possession of hypobranchial muscles (HBMs). Cyclostomes, or modern jawless vertebrates, possess a rudimentary and superficial HBM lateral to the pharynx, whereas the HBM in jawed vertebrates is internalized and
Rie Kusakabe +5 more
doaj +1 more source
PLoS ONE, 2022 Forms of embryonic nutrition are highly diverse in cartilaginous fishes, which contain oviparity, yolk-sac viviparity and several types of matrotrophic viviparity (histotrophy, oophagy, and placentotrophy). The molecular mechanisms of embryonic nutrition
Yuki Honda +6 more
doaj +3 more sources