Results 11 to 20 of about 31,670 (211)

Neurotoxicity in Marine Invertebrates: An Update

open access: yesBiology, 2021
Invertebrates represent about 95% of existing species, and most of them belong to aquatic ecosystems. Marine invertebrates are found at intermediate levels of the food chain and, therefore, they play a central role in the biodiversity of ecosystems ...
Irene Deidda   +5 more
doaj   +1 more source

DNA Barcoding of Cold-Water Coral-Associated Ophiuroid Fauna from the North Atlantic

open access: yesDiversity, 2022
In this study we focus on the ophiuroid species associated with cold-water corals south of Iceland. The specimens were sampled with the ROV Phoca (GEOMAR) in three different areas, during the recent expedition MSM75 connected to the IceAGE_RR (Icelandic ...
Angelina Eichsteller   +4 more
doaj   +1 more source

Derivedness Index for Estimating Degree of Phenotypic Evolution of Embryos: A Study of Comparative Transcriptomic Analyses of Chordates and Echinoderms

open access: yesFrontiers in Cell and Developmental Biology, 2021
Species retaining ancestral features, such as species called living fossils, are often regarded as less derived than their sister groups, but such discussions are usually based on qualitative enumeration of conserved traits. This approach creates a major
Jason Cheok Kuan Leong   +21 more
doaj   +1 more source

Effects of Ethinylestradiol (EE2) and an Organophosphorus Flame Retardant (TCPP) on Gonadal Maturation in the Sea Urchin, Paracentrotus lividus

open access: yesJournal of Marine Science and Engineering, 2020
The sea urchin (Paracentrotus lividus) was used to test the effects of one of the most abundant flame retardant additives for plastics, tris (1-chloro-2-propyl) phosphate (TCPP), and the synthetic hormone ethinylestradiol (EE2) on gametogenesis and gonad
Pedro Campoy-López   +3 more
doaj   +1 more source

INDEKS KEANEKARAGAMAN ECHINODERMATA DI PANTAI TANJUNG SETIA KABUPATEN PESISIR BARAT SEBAGAI SUMBER BELAJAR BIOLOGI SMA KELAS X

open access: yesBioedukasi: Jurnal Pendidikan Biologi FKIP UM Metro, 2017
Echinoderms are an invertebrate animal consisting of 5 classes, all of its members live in the sea. Echinoderm inhabits the shallow sea to a certain depth.
Dini Arifah   +2 more
doaj   +1 more source

Long-term change in benthopelagic fish abundance in the abyssal northeast Pacific Ocean [PDF]

open access: yes, 2006
Food web structure, particularly the relative importance of bottom-up and top-down control of animal abundances, is poorly known for the Earth's largest habitats: the abyssal plains.
Bailey, D.M., Ruhl, H.A., Smith, K.
core   +1 more source

Global Warming and Mass Extinctions Associated With Large Igneous Province Volcanism

open access: yesGeophysical Monograph Series, Page 83-102., 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.
David P. G. Bond, Yadong Sun
wiley  

+1 more source

Extensive introgression among strongylocentrotid sea urchins revealed by phylogenomics

open access: yesEcology and Evolution, 2023
Gametic isolation is thought to play an important role in the evolution of reproductive isolation in broadcast‐spawning marine invertebrates. However, it is unclear whether gametic isolation commonly evolves early in the speciation process or only ...
Matthew R. Glasenapp, Grant H. Pogson
doaj   +1 more source

Crinoid phylogeny: a preliminary analysis (Echinodermata: Crinoidea) [PDF]

open access: yes, 2004
We describe the first molecular and morphological analysis of extant crinoid high-level inter-relationships. Nuclear and mitochondrial gene sequences and a cladistically coded matrix of 30 morphological characters are presented, and analysed by ...
Ameziane, N.   +3 more
core   +2 more sources

Echinoderm Hybridization [PDF]

open access: yesScience, 1913
Mode of access: Internet.
openaire   +2 more sources

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