Results 11 to 20 of about 456,099 (413)
Keratins in Invertebrates [PDF]
Nature, 1950 IF the term ‘keratin’ were applied only to those proteins which contain a high proportion of cystine, which give a keratin-type of X-ray diffraction photograph and which dissolve with ease only in alkaline solutions of reducing agents, then keratins, so far as is known, are confined to the epidermis and epidermal appendages of vertebrates, and are ...
C. Hendricks Brown
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Reproduction, Fertility and Development, 2018 Sperm movement has been described in several phyla of invertebrates. Yet, sperm motility has only been quantified using computer-aided sperm analysis (CASA-Mot) in externally fertilising species (broadcast spawners) of two phyla, molluscs and echinoderms. In the present study we quantified in detail the nature of the sperm tracks, percentage motility
van der Horst, Gerhard +2 more
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American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView., 2023 Abstract Dynamin 1 is a GTPase protein involved in synaptic vesicle fission, which facilitates the exocytosis of neurotransmitters necessary for normal signaling. Pathogenic variants in the DNM1 gene are associated with intractable epilepsy, often manifested as infantile spasms at onset, developmental delay, and a movement disorder, and are located in ...
Davide Mei +4 more
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Aggression in invertebrates [PDF]
Current Opinion in Neurobiology, 2003 Invertebrates are outstanding model systems for the study of aggression. Recent advances and promising new research approaches are bringing investigators closer to the goal of integrating behavioral findings with those from other disciplines of the neurosciences.
Edward A. Kravitz, Robert Huber
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Marine invertebrates and noise [PDF]
Frontiers in Marine Science, 2023 Within the set of risk factors that compromise the conservation of marine biodiversity, one of the least understood concerns is the noise produced by human operations at sea and from land. Many aspects of how noise and other forms of energy may impact the natural balance of the oceans are still unstudied.
Marta Solé +21 more
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The Anatomical Record, EarlyView., 2023 Abstract Based on histological cross‐sections, the chondrocranium of the common musk turtle (Sternotherus odoratus) was reconstructed, described, and compared with other turtles. It differs from that of other turtle chondrocrania by possessing elongated, slightly dorsally orientated nasal capsules with three dorsolateral foramina, which might be ...
Luca Leicht +2 more
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Zoology: Invertebrates that Parasitize Invertebrates [PDF]
Current Biology, 2016 The genome of an orthonectid, a group of highly modified parasitic invertebrates, is drastically reduced and compact, yet it shows the bilaterian gene toolkit. Phylogenetic analyses place the enigmatic orthonectids within Spiralia, although their exact placement remains uncertain.
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Scientific Reports, 2021 Ammonite soft body remains are rarely preserved. One of the biggest enigmas is the morphology of the ammonite brachial crown that has, up till now, never been recovered.
C. P. A. Smith +3 more
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Diversity, 2023 Earthworm invasions often reduce biodiversity and affect the ability of ecosystems to perform ecosystem functions. Over the past few decades, European lumbricid species have spread widely in natural habitats in Western Siberia, without completely ...
Elena V. Golovanova +4 more
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Deterrent activities in the crude lipophilic fractions of Antarctic benthic organisms: chemical defences against keystone predators [PDF]
Polar Research, 2014 Generalist predation constitutes a driving force for the evolution of chemical defences. In the Antarctic benthos, asteroids and omnivore amphipods are keystone opportunistic predators.
Laura Núñez-Pons, Conxita Avila
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