Results 291 to 300 of about 153,621 (333)

Defining ecological roles of sharks on coral reefs

Biological Reviews, EarlyView.
ABSTRACT Sharks have often been perceived to play a critical role in the dynamics of coral reef ecosystems globally. Yet, there is relatively little evidence to support this idea across all but a limited set of species and contexts. Research on the roles and importance of reef sharks has been complicated by logistical challenges in collecting data on ...
Natalie V. Klinard, Christopher G. Mull, Michael R. Heithaus, M. Aaron MacNeil   +3 more
wiley   +1 more source

Phylogeography of the Anaspides richardsoni species clade (Anaspidacea, Anaspidesidae): glaciation and recolonization of the Tasmanian Central Plateau and the question of paraphyletic species

Cladistics, EarlyView.
Abstract We herein present a phylogenetic and population genetic analysis of a Tasmanian Mountain Shrimp clade, based on ddRAD and cytochrome oxidase subunit‐1 data sets. Our data show that the morphologically well‐delineated and widespread Anaspides richardsoni Ahyong, 2016 is paraphyletic with respect to four other species (A. eberhardi Ahyong, 2016,
Christoph G. Höpel, Shane T. Ahyong, Martin Kapun, Martin Schwentner, Stefan Richter   +4 more
wiley   +1 more source

Modeling nature‐based restoration potential across aquatic–terrestrial boundaries

Conservation Biology, EarlyView.
Abstract Today, few watersheds remain untouched by global change processes arising from climate warming, impoundments, channelization, water extraction, pollution, and urbanization. The need for restoration has resulted in a myriad of interventions, generally performed at small scales, which have limited measurable impact in restoring biodiversity and
B. Wegscheider, N. K. Rideout, W. A. Monk, M. A. Gray, R. Steeves, D. J. Baird   +5 more
wiley   +1 more source

Exploring gaps, biases, and research priorities in the evidence for reptile conservation actions

Conservation Biology, EarlyView.
Abstract With over 21% of reptile species threatened with extinction, there is an urgent need to ensure conservation actions to protect and restore populations are informed by relevant, reliable evidence. We examined the geographic and taxonomic distribution of 707 studies that tested the effects of actions to conserve reptiles synthesized in ...
Oliver Speight, William H. Morgan, Thomas B. White, Katie A. Sainsbury, Amos Bouskila, Guy Rotem, Rebecca K. Smith, William J. Sutherland, Maggie J. Watson, Alec P. Christie   +9 more
wiley   +1 more source

Identifying priority areas for conservation to promote connectivity and mitigate the impacts of anthropogenic disturbance

Conservation Biology, EarlyView.
Abstract As nations seek to expand protected area (PA) networks to cover 30% of land and seas by 2030 (30×30), there is an urgent need for systematic conservation planning and spatial prioritization that considers the broad range of ecological and socioeconomic factors influencing the persistence of biodiversity.
Edmond Sacre, Ulf Bergström, Charlotte Berkström   +2 more
wiley   +1 more source

Narcotic for Marine Invertebrates [PDF]

Nature, 1942
THE following method is cheap and simple, and gives excellent results with such soft-bodied marine animals as have been tried (Polychaetes, Doris, Priapulus, Nemertines, Ascidians). Make up 80 gm. of crystalline magnesium chloride in a litre of tap water. Immerse the animals in it. In one to four hours they will be relaxed and expanded.
G. P. Wells, Isabel C. Ledingham
openaire   +1 more source

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Glycolipids of marine invertebrates

Comparative Biochemistry and Physiology, 1970
Abstract 1. 1. Contents of monosaccharides in the lipid extracts of fifty species of marine invetebrates were determined. 2. 2. Glycolipids were found in the invertebrates of all phyla; Spongia and Echinodermata have the highest and Coeleterrata and Arthropoda have the lowest glycolipid contents. 3. 3.
V.I Svetaschev, V.E Vaskovsky, G.P Smirnova, E.Y Kostetsky, I.G Zhukova   +4 more
openaire   +3 more sources

Endogenous opioids in marine invertebrates

Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1985
A study of the presence of opioids in invertebrates was carried out on 11 species of marine organisms, ranging from sponges to tunicates. Delipidized acid-acetone extracts from whole organisms or dissected organs were assayed by receptor binding assays and radioimmuno assays. The extracts from all species tested were found to contain substances capable
PICCOLI, RENATA, D. MELCK, A. SPAGNUOLO, S. VESCIA, L. ZANETTI   +4 more
openaire   +3 more sources

Dominance Hierarchies in Marine Invertebrates

The Biological Bulletin, 2021
AbstractDominance hierarchies have been well studied in myriad terrestrial animals, but surprisingly little is known about hierarchies in marine invertebrates; examples are limited to a few species of decapod crustaceans and cephalopods. Is the marine environment less conducive to the establishment of dominance hierarchy structures, or does this just ...
Ethan Blakely, Melissa J. Morales, Cole M. Carey, Siobhan L. O’Sullivan-Evangelista, Thomas F. Mateo, Joshua P. Lord, Anthony Disipio, Alex P. Granitz, Olivia Lucas, Emily M. Buonocore, Rachel M. Moser, Gabriel J. Chlebove, Emily E. Sylvester   +12 more
openaire   +3 more sources