Results 51 to 60 of about 3,109 (199)

The loss of the urea cycle and ornithine metabolism in different insect orders: An omics approach

Insect Molecular Biology, Volume 34, Issue 5, Page 632-644, October 2025.
Among urea cycle enzymes, only the nitric oxide synthase gene is universally present across insect genomes. All Hemiptera species lack the enzymes needed to convert citrulline to arginine, and some also lack the pathway from arginine to ornithine. Putrescine and spermidine synthesis is conserved in all insects, but aphids lack the capability to produce
Jessica Cristina Silva Martins, Héctor Antônio Assunção Romão, Carolina Kurotusch Canettieri, Amanda Caetano Cercilian, Patrícia Rasteiro Ordiale Oliveira, Clelia Ferreira, Walter R. Terra, Renata de Oliveira Dias   +7 more
wiley   +1 more source

Laminar shell structure of Antigonambonites planus (Pander, 1830) (Brachiopoda, Billingsellida) [PDF]

Estonian Journal of Earth Sciences, 2017
The order Billingsellida comprises brachiopods with laminar and fibrous shells, however, the data on their microstructure are scanty and the taxonomic value of differences in their shell structure is uncertain.
Anna Madison
doaj   +1 more source

Biofouling reduction by lantern nets exchange and its relationship with production and survival of Argopecten purpuratus in Samanco Bay, Peru

Journal of the World Aquaculture Society, Volume 56, Issue 5, October 2025.
Abstract The aquaculture of Argopecten purpuratus (Peruvian scallop) is a profitable activity with positive impacts on the local economy. However, the development of biofouling on the culture lantern nets generates negative environmental impacts that affect its sustainability.
Rómulo E. Loayza‐Aguilar, Guillermo B. Saldaña‐Rojas, Fernando Merino, Gustavo E. Olivos‐Ramirez   +3 more
wiley   +1 more source

Biostratigraphy and correlation of the Cambrian Series 2 (Stage 4) to Miaolingian (Wuliuan) Thorntonia Limestone, south‐eastern Georgina Basin (Queensland, Australia)

Papers in Palaeontology, Volume 11, Issue 5, September/October 2025.
Abstract The Australian Cambrian stratigraphic record is one of the most complete for any continent. However, there is a general division, with older Cambrian rocks in South Australia (predominantly Terreneuvian, Stage 2 to Miaolingian, Wuliuan) and younger rocks in northern Australia (mostly latest Series 2, Stage 4 and younger), with minimal ...
Marissa J. Betts, Patrick M. Smith, John R. Paterson, Evelyn M. Mervine, Daniel A. Stirling, James D. Holmes   +5 more
wiley   +1 more source

PHOTOGRAPHY: A CONVENIENT TECHNIQUE FOR RECORDING SERIAL TRANSVERSE SECTIONS OF BRACHIOPODS

Rivista Italiana di Paleontologia e Stratigrafia, 2017
A review of the bibliography coupled with the Authors' personal experience shows that drawing, as a technique for recording serial transverse sections of Brachiopods is inadequate and inaccurate.
CHIARA BENIGNI, CARLA FERLIGA
doaj   +1 more source

Between the Poles: Rethinking Global Patterns in Sea Anemone Biodiversity

Journal of Biogeography, Volume 52, Issue 8, August 2025.
ABSTRACT Aim To assess global sampling coverage of sea anemones and global species richness across four different spatial resolutions, and analyse these along latitudinal gradients to investigate true bimodality and the extent to which these patterns have been influenced by uneven sampling efforts. Location The study encompasses a global scale.
Charlotte Benedict, Michael Broe, Marymegan Daly, Maanas Nukala   +3 more
wiley   +1 more source

Heat limits scale with metabolism in ectothermic animals

Journal of Animal Ecology, Volume 94, Issue 6, Page 1307-1316, June 2025.
We show that the extent to which ectotherms can increase their heat limits is strongly linked to how metabolic rate scales with temperature. This is a new perspective on what sets temperature limits in organisms, and will be important for understanding and predicting how different animals will respond to future warming.
Nicholas L. Payne, Jacinta D. Kong, Andrew L. Jackson, Amanda E. Bates, Simon A. Morley, James A. Smith, Jean‐Francois Arnoldi   +6 more
wiley   +1 more source

Orientation of Telotrematous Brachiopoda [PDF]

Nature, 1953
A STUDY of the development of the rhynchonellid, Tegulorhynchia nigricans, Sowerby, shows the larva to be furnished with two pairs of large tufts of long setae set on the hind margin of the mantle rudiment. The members of one pair lie dorso-laterally, those of the other pair laterally.
openaire   +2 more sources

Cisnerospira (Brachiopoda, Spiriferinida), an atypical Early Jurassic spire bearer from the Subbetic Zone (SE Spain) and its significance

Journal of Paleontology, 2016
. The order Spiriferinida represented a significant group whose extinction is linked to the early Toarcian mass extinction event. The genus Cisnerospira Manceñido, 2004, conspicuous representative of this group in the Early Jurassic of the western Tethys,
J. F. Baeza-Carratalá, M. Manceñido, F. G. Joral   +2 more
semanticscholar   +1 more source

Bipolarity and Antitropicality in Marine Taxa: Understanding the Complexities of Latitudinal Distribution

Journal of Biogeography, Volume 52, Issue 2, Page 454-466, February 2025.
ABSTRACT Aim This systematic review aims to analyse the current status of research on marine bipolar and antitropical distribution patterns by exploring temporal trends, studied taxa, inconsistencies in definitions and the extent of molecular evidence in bipolar and antitropical species.
Emily Yi‐Shyuan Chen, Emilia Trudnowska, Katarzyna Błachowiak‐Samołyk   +2 more
wiley   +1 more source