Results 31 to 40 of about 108 (93)

Habitat complexity promotes species richness and community stability: a case study in a marine biogenic habitat

Oikos, Volume 2025, Issue 7, July 2025.
Habitat complexity (HC) promotes species richness and abundance. Aquatic environments are faced with intense pressures that threaten the 3D structure of the seafloor, with cascading effects on ecosystem functioning and biodiversity. Maerl or rhodolith beds are marine biogenic habitats created by few species of free‐living non‐geniculate coralline algae
Victor Leite Jardim, Aurélien Boyé, Vincent Le Garrec, Marion Maguer, Adeline Tauran, Olivier Gauthier, Jacques Grall   +6 more
wiley   +1 more source

Negative ontogenetic allometry of cardinal spines in the early Cambrian arthropod Isoxys volucris indicates their defensive function

Palaeontology, Volume 68, Issue 4, July/August 2025.
Abstract The characteristic cardinal spines of Isoxys, a cosmopolitan bivalved arthropod, have been focal to understanding its role in Cambrian ecosystems. It has been proposed that the spines had either a hydrodynamic function, to aid buoyancy, or a defensive function, to protect against predators.
Morten Lunde Nielsen, Mirinae Lee, Philip R. Wilby, Tae‐Yoon S. Park, Arne T. Nielsen, Jakob Vinther   +5 more
wiley   +1 more source

The Diversity and Phylogenetic Relationships of a Chaetopterus Symbiont Community in Djibouti, with Redescription of Chaetopterus djiboutiensis Gravier, 1906 Stat. Nov. (Annelida: Chaetopteridae)

Diversity
The tubes of polychaetes of the genus Chaetopterus (Annelida: Chaetopteridae) provide habitat for cryptic, symbiotic organisms that are often overlooked when examining diversity.
Shannon D. Brown, Tullia I. Terraneo, Jenna M. Moore, Gustav Paulay, Kristine N. White, Michael L. Berumen, Francesca Benzoni   +6 more
doaj   +1 more source

Defensive Behaviour in Intertidal Crabs

Ethology, Volume 131, Issue 4, April 2025.
Mangrove swimming crab showing defensive behaviour by raising its chelae; ruler and grey card are also shown. ABSTRACT Despite a long roster of prey defences against predators now documented by biologists, any given species utilises only some of them, and we have few a priori predictions as to if, when or where they will be employed.
Manisha Koneru, Tim Caro
wiley   +1 more source

Quantification of endogenous marker acid‐insoluble ash in commercial aquaculture ingredients and feeds

Journal of the World Aquaculture Society, Volume 56, Issue 2, April 2025.
Abstract This study investigates the efficacy of acid‐insoluble ash (AIA) as an endogenous digestibility marker in commercial aquaculture ingredients and feeds. AIA is a naturally occurring, low‐cost alternative to external markers such as chromic oxide and yttrium oxide. External markers are often impractical in the production of small batches of feed
Julio Camperio, Jorge A. Suarez, Brett Glencross, Daniel D. Benetti   +3 more
wiley   +1 more source

Metabolism, Consumption Rates, and Scope for Growth of Porcelain Crab (Petrolisthes galathinus)

Gulf of Mexico Science, 2012
Porcelain crabs Petrolisthes galathinus (Bosc, 1802) can be found at high densities in oyster reefs. To examine effects of diet on metabolism, crabs (N = 32) were fed Artemia salina nauplii, mixed microalgae, or algal biofilm extract, or left unfed. Oxygen consumption, ammonia excretion, food consumption rate, and absorption efficiency were determined ...
McGlaun, Kimberly A., Withers, Kim
openaire   +3 more sources

Polyploidy confers better cold tolerance in Daphnia

Oikos, Volume 2025, Issue 3, March 2025.
Despite decades of studies on the differential distribution of polyploid organisms, the causes of this pattern have yet to be elucidated. This study aimed to explore some of the possible physiological mechanisms explaining the differential northern distribution of polyploid clones of Daphnia pulex compared to the one of the diploid parental species ...
Ivan Pecl, Pierre U. Blier, France Dufresne   +2 more
wiley   +1 more source

Historical Demography and Species Distribution Models Shed Light on Speciation in Primates of Northeast India

Ecology and Evolution, Volume 15, Issue 2, February 2025.
Northeast India's diverse geography has created numerous niches, promoting species evolution, with past climate change playing a significant role in primate speciation. Using climate modeling and genomic data, we studied the demographic history of nine primate species, revealing that climate fluctuations during the Pliocene and Pleistocene influenced ...
Mihir Trivedi, Kunal Arekar, Shivakumara Manu, Lukas F. K. Kuderna, Jeffrey Rogers, Kyle Kai‐How Farh, Tomas Marques Bonet, Govindhaswamy Umapathy   +7 more
wiley   +1 more source

Evaluation of Ethanolic Extract of Red Seaweed (Gracilariopsis lemaneiformis) on Growth and Haematological Parameters of Nile Tilapia (Oreochromis niloticus)

Aquaculture, Fish and Fisheries, Volume 4, Issue 6, December 2024.
ABSTRACT Seaweed is multicellular marine macroalgae that enhances the immunity of aquatic organisms. The study was designed to assess the ethanolic extract (EtOH) extracted from red seaweed (Gracilariopsis lemaneiformis) on Nile tilapia (Oreochromis niloticus) to evaluate growth, immunity and haematological parameters.
A. M. Shahabuddin, Md. Abdul Hannan, Md. Foysul Hossain, Shahrear Hemal, Runi Khanam, Tahmina Afroz, Ahmed Mustafa   +6 more
wiley   +1 more source

Molecular Evaluation of the Mating Dynamics of Snow Crab (Chionoecetes opilio) in the Eastern Bering Sea

Ecology and Evolution, Volume 14, Issue 10, October 2024.
Most snow crab females in the eastern Bering Sea had stored sperm from one or two mates. While single paternity was common, some females had clutches sired by two males. Female snow crab primarily mated with male snow crab, with few instances of interspecies mating.
Laura M. Slater, William Gaeuman, Wei Cheng, Gordon H. Kruse, Christopher Habicht, Douglas Pengilly   +5 more
wiley   +1 more source