Results 21 to 30 of about 1,054 (181)

Diversity and distribution patterns of Sea Urchins (echinoidea) in the waters of Doreng Beach, Sikka Regency, Indonesia

open access: yesJurnal Mangifera Edu
Echinoidea is a marine biota with many important roles in life. Echinoidea can be found in various sea and water areas, one of which is in the waters of Doreng Beach.
Yohanes Boli Tematan   +3 more
doaj   +1 more source

Gonadal growth and reproduction in the sea urchin Sphaerechinus granularis (Lamarck 1816) (Echinodermata: Echinoidea) in southern Spain

open access: yesScientia Marina, 2008
The gonadal index and reproductive state of the sea urchin Sphaerechinus granularis were studied for a year in three populations from southeast Spain.
Inés Martínez-Pita   +2 more
doaj   +1 more source

Biodiversitas Echinodermata pada Ekosistem Lamun di Perairan Pulau Karimunjawa, Jepara

open access: yesJurnal Kelautan Tropis, 2020
The seagrass ecosystem is an important ecosystem as the place of feeding ground, nursery ground, and spawning ground. One of the biotas living in the seagrass was Echinoderms.
Reni Ria Yunita   +2 more
doaj   +1 more source

The Affinities of the Echinoidea [PDF]

open access: yesThe American Naturalist, 1909
THE recent discovery that the crinoids in their ontogeny increase the number of their anibulacral post-radial ossicles by the interpolation of numerous ossicles (in pairs) between the first two primitive brachials and the radial, forming what are known as "interpolated division series, " as well as by the addition of brachials in a linear series at the
openaire   +1 more source

Echinoidea from Western Persia [PDF]

open access: yesGeological Magazine, 1920
THE Geological Department of Glasgow University has recently received from Dr. W. R. Smellie and Mr. J. V. Harrison some fossils collected by them which throw further light on the age of the limestones of the Persian arc at the north-western end of Luristan, about 100 miles north-east of Baghdad.
Gregory, J. W., Currie, Ethel
openaire   +2 more sources

Morphological and Morphometric Characterisation of Selected Camarodont Sea Urchin (Echinoidea: Camarodonta) Pedicellariae (Paracentrotus lividus, Psammechinus miliaris and Echinus esculentus)

open access: yesActa Zoologica, EarlyView.
ABSTRACT Pedicellariae are small appendages on the surface of the echinoid test, involved in defence, cleaning, and locomotion. Pedicellariae in three species of camarodont sea urchins common in UK waters (Paracentrotus lividus [Lamarck, 1816], Psammechinus miliaris [P.L.S Müller, 1771] and Echinus esculentus [Linnaeus, 1758]) are the focus of this ...
H. C. Reinardy   +6 more
wiley   +1 more source

On the Perignathic Girdle of the Echinoidea.

open access: yesJournal of the Linnean Society of London, Zoology, 1885
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

The thermal responses of barren‐forming urchins: Common patterns and knowledge gaps

open access: yesEcosphere, Volume 17, Issue 9, September 2026.
Abstract As climate change accelerates, there is increasing need to understand how species and ecosystems respond to warming. The challenge we face is the huge diversity of responses among species, and their variability across biological, temporal, and spatial scales.
Claire Butler   +7 more
wiley   +1 more source

First comprehensive taxonomic account of Salmacis bicolor L. Agassiz in L. Agassiz & Desor, 1846 (Echinodermata: Echinoidea) from Manbar Island, Makran Coast, Pakistan

open access: yesJournal of Fauna Biodiversity
The present study provides the first comprehensive morphological and taxonomic account of Salmacis bicolor L. Agassiz in L. Agassiz & Desor, 1846 from Pakistan, based on recently collected specimens from the intertidal rocky shore of Manbar Island along ...
Quratulan Ahmed   +3 more
doaj   +1 more source

Contribution to the knowledge of echinoid fauna from ‎Persian Gulf (Echinodermata: Echinoidea)‎ [PDF]

open access: yesIranian Journal of Animal Biosystematics, 2016
Species identification is always important. Records of sea urchins and sand dollars species ‎‎(Echinodermata, Echinoidea) is given from Iranian waters. Nine Species of Echinoderms were ‎identified through the study.
Seyed Afshin Nateghi Shahrokni   +3 more
doaj   +1 more source

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