Results 61 to 70 of about 948 (181)

The relative contributions of species richness and species composition to ecosystem functioning [PDF]

, 2016
How species diversity influences ecosystem functioning has been the subject of many experiments and remains a key question for ecology and conservation biology.
Aebi, Alexandre, Bersier, Louis-Félix, Bruggisse, Odile T., Bruggisser, Odile T., Fabian, Yvonne, Kehrli, Patrik, Naisbit, Russell E., Rohr, Rudolf P., Sandau, Nadine   +8 more
core   +2 more sources

Super‐Tough Silk: The Potential of Knots in Evolved Spiders

Advanced Functional Materials, Volume 35, Issue 15, April 10, 2025.
The toughness of spider silk can be further significantly enhanced if spiders evolved the –currently absent/undiscovered– ability to tie knots in their silk. The results on 393 spiders suggest toughness increments by one or two orders of magnitude and thus a new perspective on how knotting can serve as a key innovation in spider evolution and in ...
Nicola M. Pugno
wiley   +1 more source

Fatty acids in overwintering egg sacs of pirate spiders Ero sp. (Mimetidae) and wasp spiders Argiope bruennichi (Araneidae)

The European Zoological Journal
Egg sacs protect spider eggs and the spiderlings inside them from external factors (e.g. physical conditions, pathogens and predators), providing a form of passive maternal care for the offspring. This protection is based on the structure of the egg sac,
U. Suprunowicz, A. Piotrowska-Niczyporuk, A. Kostro-Ambroziak   +2 more
doaj   +1 more source

Stabilimentum variability in the webs of adult female Argiope bruennichi [PDF]

, 2013
Bei einer Bestandserhebung im Zusammenhang mit der weiteren Ausbreitung der mediterran-subatlantischen Wespenspinne in Nordrhein-Westfalen konnten im Kreis Siegen-Wittgenstein (DIENER in Vorber.) die folgenden Beobachtungen gemacht werden.
Diener, Uwe
core  

Argiope bruennichi (Scopoli, 1772) - rzadki i słabo zbadany gatunek pająka w Polsce [PDF]

Fragmenta Faunistica, 1998
In connection with the expansion of Argiope bruennichion the territories of Central Europe, observations on the behaviour of this spider have been carried out for a long time in the new climatic conditions, its spreading in the northern localities and the range of this expansion.
Beata Barabasz, Andrzej Górz
openaire   +1 more source

Effects of Taxon and Body Size on Mercury Concentrations in Spiders from Two Rivers with Different Levels of Mercury Contamination: Implications for the Use of Riparian Spiders as Sentinels

Environmental Toxicology and Chemistry, Volume 43, Issue 10, Page 2169-2175, October 2024.
Abstract Due to widespread atmospheric deposition of mercury (Hg), all aquatic food webs are contaminated with toxic methyl mercury (MeHg). At high concentrations, MeHg poses a health hazard to wildlife and humans. Spiders feeding in riparian habitats (hereafter referred to as riparian spiders) have been proposed as sentinels of MeHg contamination of ...
Andrew C. Todd, Matthew M. Chumchal, Ray W. Drenner, Chris W. Allender, Benjamin D. Barst, Morgan T. Capone, Andrew P. Degges, Madeline P. Hannappel, Cale R. Perry, Robert A. Peterson, Tori L. Martinez, Iris E. Schmeder, Tyler T. Williams, Macyn G. Willingham   +13 more
wiley   +1 more source

Sequential origin in the high performance properties of spider dragline silk [PDF]

, 2012
Major ampullate (MA) dragline silk supports spider orb webs, combining strength and extensibility in the toughest biomaterial. MA silk evolved ~376 MYA and identifying how evolutionary changes in proteins influenced silk mechanics is crucial for ...
Blackledge, Todd A, Elices Calafat, Manuel, Guinea Tortuero, Gustavo V., Navarro, Andrés, Perea Abarca, Gracia Belén, Plaza Baonza, Gustavo Ramón, Pérez Rigueiro, José   +6 more
core   +3 more sources

Comparative neuroanatomy of the central nervous system in web‐building and cursorial hunting spiders

Journal of Comparative Neurology, Volume 532, Issue 2, February 2024.
In this study, we describe the central nervous system of two cursorial hunting spiders and two stationary hunting spiders. We found major differences in the secondary eye pathway between species that pertain to visual neuropils and higher‐ order neuropils. We also found differences in the proportional volume of neuropils.
Philip O. M. Steinhoff, Steffen Harzsch, Gabriele Uhl   +2 more
wiley   +1 more source

Asymmetric performance in early life stages of hybrid Argiope bruennichi

Peer Community Journal
Hybridisation of different species or isolated populations is an important driver of animal speciation. Hybrid populations oftentimes outperform their parent populations due to novel genetic combinations, exhibiting hybrid vigour. Conversely, hybridisation can also lead to worse performance due to outbreeding depression.
Sebastian Franke, Alina Volquardsen, Jutta M. Schneider   +2 more
openaire   +1 more source

Untersuchungen zur Rolle ausgewählter netzbauender Spinnen (Araneae) im trophischen Beziehungsgefüge von Halbtrockenrasen [Kurzreferat] [PDF]

, 2013
Im Rahmen einer dreijährigen Freilandstudie wurden ausgewählte netzbauende Spinnenarten [Argiope bruennichi (SCOPOLl, 1772);Araneus quadratus CLERCK, 1757; Araneus diadematus CLERCK, 1757; Linyphia triangularis (CLERCK, 1757); Theridion impressum L. KOCH,
Malt, Steffen
core