Results 21 to 30 of about 14,205 (202)

Behavioral plasticity of nocturnal marine organisms under interspecific competitive pressure

open access: yesGlobal Ecology and Conservation, 2023
Pacific abalone (Haliotis discus hannai) are typical nocturnal organisms in the marine benthic ecosystem. However, whether their rhythmic behavior is related to the avoidance of interspecific competition for food resources is unknown.
Qi Luo   +6 more
doaj   +1 more source

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 urchinsĀ 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

Sea urchin utilisation in Eastern Indonesia

open access: yesIlmu Kelautan, 2023
Sea urchins have long been an important component of gleaning invertebrate fisheries and are valued for their highly nutritious gonads. Sea urchin fisheries are often unreported and unregulated, despite increasing indications of overexploitation. Data on
Hartati Tamti   +6 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

Turning waste into gold: Sustainable feed made of discards from the food industries promotes gonad development and colouration in the commercial sea urchin Paracentrotus lividus (Lamarck, 1816)

open access: yesAquaculture Reports, 2021
Development of sustainable aquaculture practices is a suitable solution to reduce the pressure on overexploited stocks of the Mediterranean sea urchin, Paracentrotus lividus, and to respond to the increasing market demand. To move forward the Blue Growth
Laura Ciriminna   +5 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

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

Accumulation of Microplastics in the Digestive Tract and Gonads and its Effects on Gonad Quality of Sea Urchins Tripneustes gratilla

open access: yesBiotropika: Journal of Tropical Biology, 2023
Marine plastic debris will move with the flow of water and float and then be fragmented into smaller particles, namely microplastics, sink, and settle on the substrate. Sea urchins, as deposit feeders, can potentially ingest microplastic particles, which
Vanela Chatrin Lekatompessy   +2 more
doaj   +1 more source

Sea Urchin (Echinoidea) Distribution and Abundance in the Intertidal Zone of Bengkayang Regency

open access: yesBiosaintifika: Journal of Biology & Biology Education, 2018
Sea urchins is the member of Echinoidea. This species can be found in tropical marine water to the poles. The study aimed to know the types, the abundance and spread of sea urchins in Bengkayang Regency. The research, used the transect method.
Andi Ristanto   +2 more
doaj   +1 more source

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