Results 31 to 40 of about 1,281,546 (311)

The Rearing of Sea Urchins [PDF]

open access: yesNature, 1911
I ENCLOSE a photograph which may interest your readers. It is one of a water-colour painting of a seaurchin, magnified 4 diameters, which has been reared in my laboratory by Dr. Cresswell Shearer. It is a hybrid, a cross between Echinus milearis (male) and E. esculentus (female), both obtained from the Plymouth Marine Laboratory. The cross was effected
openaire   +7 more sources

Digestive Enzyme Activities and Gut Emptying Are Correlated with the Reciprocal Regulation of TRPA1 Ion Channel and Serotonin in the Gut of the Sea Urchin Strongylocentrotus intermedius

open access: yesBiology, 2022
The energetic link in the benthic community is based on physiological characteristics of the low food absorption efficiency of sea urchins. Low food absorption efficiency of sea urchins is correlated with the activity of digestive enzymes and the ...
Jingyun Ding   +8 more
doaj   +1 more source

Identification of sea urchins in melonguane coastal area using Multilayer Perceptron Neural Network

open access: yesIlkom Jurnal Ilmiah, 2022
Sea urchins (Echinoidea) are marine biota that is found in Indonesian waters and there are 950 types of sea urchins scattered throughout the world. This study aims to classify types of sea urchins based on the characteristics contained in sea urchin ...
Andar Alwein Pinilas   +2 more
doaj   +1 more source

Sea urchin granuloma [PDF]

open access: yesRevista do Instituto de Medicina Tropical de São Paulo, 2006
Injuries caused by venomous and poisonous aquatic animals may provoke important morbidity in humans. The phylum Echinoderma include more than 6000 species of starfish, sea urchins, sand dollars, and sea cucumbers some of which have been found responsible for injuries to humans. Initial injuries by sea urchins are associated with trauma and envenomation,
Jamesson de Macedo Mora   +3 more
openaire   +4 more sources

Foraging behavior of the sea urchin Mesocentrotus nudus exposed to conspecific alarm cues in various conditions

open access: yesScientific Reports, 2021
Conspecific alarm cues crushed from Mesocentrotus nudus prevent sea urchins from foraging the kelp, but do not repel them far away from the kelp. However, it remains largely unknown of whether this phenomenon was affected by conspecific alarm cues or by ...
Xiaomei Chi   +7 more
doaj   +1 more source

Variation in purple sea urchin (Strongylocentrotus purpuratus) morphological traits in relation to resource availability [PDF]

open access: yesPeerJ, 2021
Flexible resource investment is a risk sensitive reproductive strategy where individuals trade resources spent on reproduction for basic metabolic maintenance and survival.
Joshua G. Smith, Sabrina C. Garcia
doaj   +2 more sources

Expression Regulation Mechanisms of Sea Urchin (Strongylocentrotus intermedius) Under the High Temperature: New Evidence for the miRNA-mRNA Interaction Involvement

open access: yesFrontiers in Genetics, 2022
In the context of global warming and continuous high temperatures in the northern part of China during summer, the mortality rate of our main breeding species, Strongylocentrotus intermedius, reached 80% in 2020.
Lingshu Han   +14 more
doaj   +1 more source

Species and Abundance of Sea Urchins (Diadematidae) on Different Environmental Pressure Conditions

open access: yesJournal of Tropical Life Science, 2017
Genetic diversity of sea urchin are very high; there are no two organisms of the same species that are exactly alike. Dense aggregation of sea urchin is responsible for the destruction of marine algae communities on coral reef ecosystem.
Pratama Diffi Samuel   +2 more
doaj   +1 more source

The behavior of sympatric sea urchin species across an ecosystem state gradient [PDF]

open access: yesPeerJ, 2023
Background In temperate macroalgal forests, sea urchins are considered as a keystone species due to their grazing ability. Given their potential to shape benthic communities, we monitored the habitat use by three sympatric sea urchin species and compared
Dominic Franco C. Belleza   +5 more
doaj   +2 more sources

The Sea Urchin [PDF]

open access: yesScientific American, 1870
n ...
openaire   +2 more sources

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