Results 11 to 20 of about 33,773 (176)

Marine Anoxia and Ocean Acidification During the End‐Permian Extinction

open access: yesGeophysical Monograph Series, Page 325-340., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Ying Cui   +4 more
wiley  

+1 more source

Hæmoglobin in the Crustacea [PDF]

open access: yesNature, 1957
HAEMOGLOBIN in solution in the blood plasma is found in numerous entomostracan Crustacea. Ray Lankester first discovered it in Chirocephalus, observing the absorption bands of oxyhaemoglobin with a microspectroscope1, and soon afterwards found it in Daphnia. The wave-length of the α-band differs among species within the genus Daphnia 2.
openaire   +2 more sources

Spatial distribution, host specificity, and affinity of Branchiura for surface and macrohabitat types in fish species from the Brazilian Amazon [PDF]

open access: yesAnais da Academia Brasileira de Ciências
This study investigated the spatial distribution, parasite interactions, and affinities of Branchiura parasites according to macrohabitat and surface type on fish from the Araguari River, Amapá State, in the Brazilian Amazon.
DRIELLY O. FERREIRA   +4 more
doaj   +1 more source

Mysid subfamily Boreomysinae (Crustacea: Mysida: Mysidae) in the southeast Australian deep-sea

open access: yesRecords of the Australian Museum, 2023
The deep-water mysid crustaceans of Australia have been barely known. Recent explorations of RV Investigator (CSIRO) in the southeast Australian waters discovered a unique fauna. In this special study of the marine subfamily Boreomysinae (family Mysidae)
Mikhail E. Daneliya
doaj   +1 more source

Sexual Selection and Mixed Sex Expression: Adolescent Protandry, Phenotypic Tradeoffs and ‘Unconventional' Sex Allocation Estimates in a Protandric-Simultaneous Hermaphrodite

open access: yesFrontiers in Marine Science, 2018
In protandric-simultaneous (PS) hermaphrodites, individuals invariably reproduce as males first and later in life as simultaneous hermaphrodites. In this study, the shrimp Lysmata wurdemanni (Gibbes, 1850) was used as a model to (i) test for the role of ...
J. Antonio Baeza   +2 more
doaj   +1 more source

Life in the Underworld: Anchialine cave biology in the era of speleogenomics

open access: yesInternational Journal of Speleology, 2016
Anchialine caves contain haline bodies of water with underground connections to the ocean and limited exposure to open air. Despite being found on islands and peninsular coastlines around the world, the isolation of anchialine systems has facilitated the
Jorge L. Pérez-Moreno   +2 more
doaj   +1 more source

Distribution of Cryptopotamon anacoluthon (Kemp, 1918) (Crustacea: Brachyura: Potamidae), a freshwater crab endemic to Hong Kong

open access: yesJournal of Threatened Taxa, 2017
Cryptopotamon anacoluthon Kemp, 1918 is a tropical freshwater crab currently considered endemic to Hong Kong. The species is more widely distributed than previously known and potentially occurs outside Hong Kong. However, its habitat is under threat from
David John Stanton   +2 more
doaj   +1 more source

A New Genus of Ectinosomatidae (Copepoda, Harpacticoida) Symbiont in the Digestive Tract of Eudistoma vannamei Millar, 1977 (Ascidia, Polycitoridae)

open access: yesArthropoda
A new genus of Ectinosomatidae is recorded in association with an Ascidia from a permanent submerged coral community in Barra Beach, Salvador City, Bahia State (Brazil).
Paulo H. Corgosinho   +5 more
doaj   +1 more source

Three new species of Spongiopsyllus Johnsson, 2000 (Copepoda: Siphonostomatoida: Entomolepididae) associated with Aplysina cauliformis (Carter, 1882) (Porifera: Demospongiae) from Todos-os-Santos Bay, Northeastern Brazil

open access: yesEuropean Journal of Taxonomy
Entomolepididae is a small siphonostomatoid family with a distinct shield-like body morphology, comprising 9 genera and 20 species. These genera are divided into two subfamilies, mostly based on their body segmentation, the genera with fused pedigerous ...
Amilcar Farias   +3 more
doaj   +1 more source

Confirmation of hard-substrate predictions in the abyssal Vema Fracture Zone

open access: yesFrontiers in Marine Science
Hydroacoustic mapping has recently challenged the long-held view of a uniform abyssal seafloor by predicting substantial habitat heterogeneity in this environment.
Torben Riehl   +10 more
doaj   +1 more source

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