Results 21 to 30 of about 15,787 (263)

Biodiversity and Conservation of Marine Mollusks in the Indo-Pacific Convergence Zone. [PDF]

open access: yesEcol Evol
An integrated assessment has identified 11 priority mollusk conservation areas in the Indo‐Pacific Convergence Zone, which harbor 47.9% of species and 58.9% of threatened taxa, though only 18.7% have MPA coverage. Multi‐habitat zones, such as coral–mangrove areas, support 42.3% of molluscan diversity.
Lai X   +6 more
europepmc   +2 more sources

Early Tremadocian cephalopods from Santa Rosita Formation in NW Argentina: the oldest record for South America [PDF]

open access: yesActa Palaeontologica Polonica, 2023
We describe early Tremadocian (Kainella meridionalis Biozone) cephalopods from the Cordillera Oriental, Jujuy, NW Argentina. They consist of numerous small specimens collected at the Quebrada de Arenal, Trancas section, near the town of Tilcara, in the
MARCELA CICHOWOLSKI   +5 more
doaj   +1 more source

Triassic coleoid beaks and other structures from the Calcareous Alps revisited [PDF]

open access: yesActa Palaeontologica Polonica, 2022
We performed comprehensive study of seven Carnian, Late Triassic specimens of a coleoid cephalopod Phragmoteuthis bisinuata, on which Suess based his hypothesis on “beaks of P. bisinuata”. Using SEM/EDS, we found that “beaks of P.
LARISA A. DOGUZHAEVA   +4 more
doaj   +1 more source

A novel metabarcoding primer pair for environmental DNA analysis of Cephalopoda (Mollusca) targeting the nuclear 18S rRNA region [PDF]

open access: yesRoyal Society Open Science, 2021
Cephalopods are pivotal components of marine food webs, but biodiversity studies are hampered by challenges to sample these agile marine molluscs. Metabarcoding of environmental DNA (eDNA) is a potentially powerful technique to study oceanic cephalopod ...
Daniëlle S. W. de Jonge   +5 more
doaj   +1 more source

Impact of Lidocaine on Pain-Related Grooming in Cuttlefish

open access: yesBiology, 2022
Nociception is the neural process of encoding noxious stimuli and is typically accompanied by a reflex withdrawal response away from the potentially injurious stimulus.
Tzu-Hsin Kuo   +3 more
doaj   +1 more source

Non-destructive analysis of pathological belemnite rostra by micro-CT techniques [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Previously, palaeopathological features of fossil hardparts were often difficult to interpret because it was impossible to decipher their internal structure without destroying the specimens. We applied high-resolution computedtomo graphy (CT) to document
René Hoffmann   +4 more
doaj   +1 more source

Pseudogzheloceras—a new genus of Carboniferous nautilids (Cephalopoda) from Europe and North Africa

open access: yesGeo&Bio, 2021
Analysis of morphology, stratigraphic and geographic distribution of the group of nautilid species, mainly from the Westphalian of Western Europe, and the Bashkirian and Moscovian of the Donets Basin (Eastern Ukraine) made it possible to establish a new ...
V. Dernov
doaj   +1 more source

Functional Trait Divergence in Feeding Ecology Between Two Closely Related <i>Upeneus</i> Species in the Beibu Gulf: An Ecological Morphology Analysis. [PDF]

open access: yesEcol Evol
This research not only provides new insights into the niche differentiation and adaptive evolution of closely related species but also offers significant evidence for understanding resource allocation mechanisms within ecosystems. ABSTRACT Closely related species coexisting in the same habitat often undergo niche differentiation or morphological ...
Fu J   +7 more
europepmc   +2 more sources

Biología y ecología del calamar Dosidicus gigas (Cephalopoda) en aguas chilenas: una revisión [PDF]

open access: yes, 2015
Indexación: Web of Science; Scielo.ABSTRACT. The jumbo squid Dosidicus gigas is the most abundant cephalopod species in the southeastern Pacific Ocean, which supports the biggest cephalopod fishery in the world.
Ibáñez, Christian M.   +4 more
core   +9 more sources

Spatial and Temporal Characteristics of Demersal Assemblages in Sığacık Bay, Central Aegean Sea, Turkey

open access: yesÇanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries, 2021
This study aimed to determine the spatial and temporal variation of species diversity and CPUE in trawl fisheries in the Central Aegean Sea (Sığacık Bay). The study also aimed to evaluate changes in some biometric parameters (mean and frequency of length)
Hakkı DERELİ
doaj   +1 more source

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