Results 121 to 130 of about 211,015 (329)

Investigating heavy metal concentrations in sea snakes (Elapidae: Hydrophiinae) as an outcome of oil spill exposure

open access: yesHeliyon
This study reports the concentration of heavy metals in the tissues of stranded sea snakes that died as a result of exposure to an oil spill on the eastern coast of Sharjah, UAE.
Fadi Yaghmour   +7 more
doaj  

Synapsids and sensitivity: Broad survey of tetrapod trigeminal canal morphology supports an evolutionary trend of increasing facial tactile specialization in the mammal lineage

open access: yesThe Anatomical Record, EarlyView.
Abstract The trigeminus nerve (cranial nerve V) is a large and significant conduit of sensory information from the face to the brain, with its three branches extending over the head to innervate a wide variety of integumentary sensory receptors, primarily tactile.
Juri A. Miyamae   +4 more
wiley   +1 more source

PARTICIPACION DE SEÑALES QUIMICAS EN EL RECONOCIMIENTO Y DISCRIMINACION DE SEXOS EN BOA CONSTRICTOR OCCIDENTALIS (SERPENTES, BOIDAE) PARTICIPATION OF CHEMICAL CUES IN CONSPECIFIC DETECTION AND SEXUAL DISCRIMINATION IN BOA CONSTRICTOR OCCIDENTALIS (SERPENTES, BOIDAE)

open access: yesGayana, 2001
La presencia de una feromona sexual en los ofidios permite el reconocimiento de las especies y estimula el cortejo en los machos. El comportamiento de los boídeos en el contexto de la comunicación quimiosensorial es conocido en representantes del género ...
Margarita Chiaraviglio   +1 more
doaj  

Collectors of Snakes [PDF]

open access: yesScientific American, 1897
n ...
openaire   +1 more source

Histochemical indications for a chemically complex signal produced by the cervical gill slit gland of the pygmy sperm whale (Kogia breviceps)

open access: yesThe Anatomical Record, EarlyView.
Abstract The pygmy sperm whale (Kogia breviceps) possesses an exocrine gland associated with its false gill slit pigmentation pattern. The cervical gill slit gland is a compound tubuloalveolar gland that produces a holocrine secretion and displays maturational changes in size and secretory histology. While the morphology of the cervical gill slit gland
Tiffany F. Keenan   +13 more
wiley   +1 more source

Tracking multiple objects using intensity-GVF snakes [PDF]

open access: yes, 2009
Active contours or snakes are widely used for segmentation and tracking. Multiple object tracking remains a difficult task, characterised by a trade off between increasing the capturing range of edges of the object of interest, and decreasing the ...
Chaerle, Laury   +4 more
core  

Inside the head of Crotalus durissus LINNAEUS, 1758 (Serpentes, Viperidae, Crotalinae): Macroscopic description of the brain with ontogenetic insights

open access: yesThe Anatomical Record, EarlyView.
Abstract Neuroanatomy studies in vertebrates have garnered significant attention in recent years, particularly driven by advancements in computerized tomography imaging techniques. Nonetheless, these advancements remain largely constrained to specific vertebrate groups, notably mammals, birds, and fish, leaving studies in reptiles at an incipient stage.
Giordanna Issa Lucas, Angele Martins
wiley   +1 more source

High prevalence and pathogenicity of Cryptosporidium serpentis in snakes in southern China

open access: yesCurrent Research in Parasitology and Vector-Borne Diseases
In southern China, snakes have cultural and economic significance, serving both as traditional dietary resources and as increasingly popular pets. However, the prevalence and clinical impacts of Cryptosporidium spp.
Falei Li   +4 more
doaj  

Sharpening our understanding of saber‐tooth biomechanics

open access: yesThe Anatomical Record, EarlyView.
Abstract Saber‐teeth are a striking example of convergent evolution in vertebrate predators, having evolved multiple times in mammals and their early ancestors. While there is broad consensus that saber‐toothed taxa employed a distinct biting strategy compared to conical‐toothed carnivores, like the lion, the precise mechanics and variability of this ...
Tahlia Pollock, Philip S. L. Anderson
wiley   +1 more source

The life-cycle and ultrastructure of Sarcocystis ameivamastigodryasi n. sp., in the lizard Ameiva ameiva (Teiidae) and the snake Mastigodryas bifossatus (Colubridae)(1)

open access: yesParasite, 2000
Sarcocysts in muscles of the teiid lizard Ameiva ameivafrom north Brazil were fed to the colubrid snake Mastigodryas bifossatus, the faeces of which had been shown to be devoid of coccidial oocysts or sporocysts.
Lainson R., Paperna I.
doaj   +1 more source

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