Results 21 to 30 of about 1,377 (167)

Morphological and histological description of the midgut caeca in true crabs (Malacostraca: Decapoda: Brachyura): origin, development and potential role

BMC Zoology, 2022
Background The decapods are a major group of crustaceans that includes shrimps, prawns, crayfishes, lobsters, and crabs. Several studies focused on the study of the digestive system of the decapods, constituted by the oesophagus, stomach, midgut tract ...
Diego Castejón, Guiomar Rotllant, Javier Alba-Tercedor, Enric Ribes, Mercè Durfort, Guillermo Guerao   +5 more
doaj   +1 more source

The house spider genome reveals an ancient whole-genome duplication during arachnid evolution

BMC Biology, 2017
Background The duplication of genes can occur through various mechanisms and is thought to make a major contribution to the evolutionary diversification of organisms. There is increasing evidence for a large-scale duplication of genes in some chelicerate
Evelyn E. Schwager, Prashant P. Sharma, Thomas Clarke, Daniel J. Leite, Torsten Wierschin, Matthias Pechmann, Yasuko Akiyama-Oda, Lauren Esposito, Jesper Bechsgaard, Trine Bilde, Alexandra D. Buffry, Hsu Chao, Huyen Dinh, HarshaVardhan Doddapaneni, Shannon Dugan, Cornelius Eibner, Cassandra G. Extavour, Peter Funch, Jessica Garb, Luis B. Gonzalez, Vanessa L. Gonzalez, Sam Griffiths-Jones, Yi Han, Cheryl Hayashi, Maarten Hilbrant, Daniel S. T. Hughes, Ralf Janssen, Sandra L. Lee, Ignacio Maeso, Shwetha C. Murali, Donna M. Muzny, Rodrigo Nunes da Fonseca, Christian L. B. Paese, Jiaxin Qu, Matthew Ronshaugen, Christoph Schomburg, Anna Schönauer, Angelika Stollewerk, Montserrat Torres-Oliva, Natascha Turetzek, Bram Vanthournout, John H. Werren, Carsten Wolff, Kim C. Worley, Gregor Bucher, Richard A. Gibbs, Jonathan Coddington, Hiroki Oda, Mario Stanke, Nadia A. Ayoub, Nikola-Michael Prpic, Jean-François Flot, Nico Posnien, Stephen Richards, Alistair P. McGregor   +54 more
doaj   +1 more source

Growth and longevity of the spider crab Libinia ferreirae (Majoidea, Epialtidae)

Nauplius, 2020
We estimated the growth parameters of the spider crab, Libinia ferreirae (age, asymptotic size and growth rate) using the von Bertalanffy growth equation model.
Geslaine Rafaela Lemos Gonçalves, Lizandra Fernandes Miazaki, Eduardo Antonio Bolla Junior, Raphael Cezar Grabowski, Rogério Caetano da Costa, Antonio Leão Castilho   +5 more
doaj   +1 more source

THE ENCRUSTATION OF THE SPIDER CRAB HYASTENUS HILGENDORFI IN RELATION TO ITS REPRODUCTIVE BIOLOGY IN THE SUEZ CANAL, EGYPT [PDF]

Delta Journal of Science, 2013
The encrustation of the spider crab Hyastenus hilgendorfi inhabiting the Suez Canal in relationto its reproductive biology was studied. This species is considered a by-catch in the area of theSuez Canal.
WAFAA S. SALLAM
doaj   +1 more source

Spatial distribution, density, and relative growth of Microphrys bicornutus (Latreille, 1826) (Brachyura: Majidae) in five biotopes in a Thalassia complex

Scientia Marina, 2007
Spatial distribution, population density, number of ovigerous females, and relative growth of Microphrys bicornutus were studied in an extremely shallow Thalassia complex (Buchuaco- Venezuela).
Carlos A. Carmona-Suárez
doaj   +1 more source

Evidence for adaptive explanations of semelparity in animals

Biological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher, Roberto Salguero‐Gómez   +1 more
wiley   +1 more source

Variation in Fluorescence in Some Northeast Atlantic Malacostraca (Pancrustacea)

Diversity
Fluorescence is known to occur on varying surfaces across crustacea but is only cited in sporadic reports, despite being a potentially important visual signal and changing with development and within moult cycles.
Thomas I. Baxter, David M. Paterson, Andrew J. Blight   +2 more
doaj   +1 more source

'Natural experiment' demonstrates top-down control of spiders by birds on a landscape level.

PLoS ONE, 2012
The combination of small-scale manipulative experiments and large-scale natural experiments provides a powerful approach for demonstrating the importance of top-down trophic control on the ecosystem scale.
Haldre Rogers, Janneke Hille Ris Lambers, Ross Miller, Joshua J Tewksbury   +3 more
doaj   +1 more source

Climatic niche divergence and high‐elevation adaptation promoted rapid diversification of Pimoa spiders in Pan‐Himalaya

Ecography, EarlyView.
The Pan‐Himalayan region harbors exceptional biodiversity, yet the origins and underlying mechanisms driving this remarkable diversity remain poorly understood, especially among species‐rich invertebrates. Pimoa spiders exhibit an intercontinental disjunct distribution across three major mountain regions: the Rockies, the Alps, and the Pan‐Himalaya ...
Xiaoqing Zhang, Zhe Zhao, Bingyue Zhu, Tongyao Jiang, Lili Shao, Stefano Mammola, Jiangni Li, Hao Xu, Bing Li, Shuqiang Li   +9 more
wiley   +1 more source

Recent advances in multifunctional soft robots: A materials–structures–systems co‐design perspective for synergistic integration

FlexMat, EarlyView.
Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu, Zicao Peng, Chong Sun, Haitao Yang   +3 more
wiley   +1 more source