Results 111 to 120 of about 34,943,504 (266)

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

Tooth histotype and enameloid microstructure of Priohybodus arambourgi d'Erasmo, 1960 (Elasmobranchii: Hybodontiformes) from the Late Jurassic of northeastern Brazil

The Anatomical Record, EarlyView.
Abstract Sharks possess varied diets and different prey capture mechanisms. As a result, the group exhibits a significant diversity in dental morphology, also reflecting the internal structures of the teeth. Internal dental anatomy points to the existence of three histotypes in elasmobranch phylogeny: orthodont, osteodont, and pseudoosteodont ...
Kelly Roberta da Silva, Valéria Gallo, Estevan Eltink   +2 more
wiley   +1 more source

Marine Institute's Monitoring Programme for Contaminants in Fish and Shellfish [PDF]

, 2006
The Marine Institute monitors the levels of priority hazardous substances in a range of commercial fish species landed at Irish ports and also in shellfish from selected sites around the Irish coast.Funder: Marine ...
Marine Institute
core   +1 more source

National marine science plan 2015-2025: driving the development of Australia's blue economy

, 2015
Australia’s vast oceans are a vital part of the heritage, heart and economic future of our country. The value of this marine estate, from a source of recreation, to energy and food production, to safety and security for all Australians is matched only by
National Marine Science Committee
core  

Osteohistological evidence for terrestrial adaptation and an extended growth period in mekosuchine crocodylians and its potential role in their extinction

The Anatomical Record, EarlyView.
Abstract The Australasian crocodylian fossil record is dominated by the extinct endemic clade Mekosuchinae, with known members spanning the Eocene‐to‐Holocene. This diverse clade exhibited high morphological disparity, from early members superficially similar to Crocodylus, to more terrestrial forms later in the clade's evolutionary history.
Devin K. Hoffman, Cecily S. C. Nicholl, Oliver Bradley, Sreya Magar, Marie Sofia Sebaratnam, Alexandra Houssaye, Ryan N. Felice, Adam M. Yates, Stephen F. Poropat, Philip D. Mannion   +9 more
wiley   +1 more source

Histological Characterization and Comparative Transcriptomic Analysis of Gonads During Early Sex Differentiation in the Northern Snakehead (Channa argus)

Animal Research and One Health, EarlyView.
This study delineates the early sex differentiation timeline in the northern snakehead (Channa argus). These findings provide a foundation for future sex‐control breeding in this economically important species. ABSTRACT The northern snakehead (Channa argus) is an economically important aquaculture species in China.
Chaonan Sun, Donglei Sun, Haishen Wen, Xin Qi, Chao Li, Xiaoyan Zhang, Yun Li   +6 more
wiley   +1 more source

An innovative method for the preservation and exhibition of four plastination specimens from a single minke whale (Balaenoptera acutorostrata)

Frontiers in Marine Science
Plastination represents the most advanced technique for preserving biological specimens, widely adopted in education, scientific research, and popular science.
Wen-Bin Jiang, Xue Song, M. Adeel Alam Shah, Jian Han, Xue-Wei Ma, Hong-Jin Sui, Hong-Jin Sui   +6 more
doaj   +1 more source

Results from a Consciousness Survey of Marine Science Education; Marine Educators in Japan and the US

Results from a Consciousness Survey of Marine Science Education; Marine Educators in Japan and the US
Survey of the differences of understanding towards marine science education between USA and Japanese marine educators was conducted using questionnaire method. Both sides think that marine science education is important for citizens to have a concern of the ocean, K-12 educations are also needed, but both citizens don't concern about the ocean and ...
openaire   +1 more source

Integrating One Health to Mitigate the Emergence and Spread of Antimicrobial Resistance in Livestock and Aquaculture

Animal Research and One Health, EarlyView.
Antimicrobial resistance (AMR) is an escalating global threat driven by antimicrobial use in aquaculture and livestock. Resistant pathogens and genes can spread across humans, animals, and the environment through interconnected ecosystems. Using a One Health approach, this review emphasizes antimicrobial stewardship, regulatory strengthening, enhanced ...
Mir Mohammad Ali, Delower Hossain, Ridwan Olamilekan Adesola, Anum Hanif, Shamsaldeen Ibrahim Saeed, Muhammad Abdul Mannan, Anoar Jamai Masroure, Kazi Estieque Alam, Md Kamal Hossain, Sabiha Zarin Tasnim Bristi, Md Jisan Ahmed   +10 more
wiley   +1 more source

Quinolone Resistance and Prevalence of the Related Genes in Photobacterium damselae subsp. damselae Recovered from Diseased Fish in Eastern China

Fishes
Photobacterium damselae subsp. damselae is a well-recognized marine animal pathogen. Herein, 70 P. damselae subsp. damselae isolates were investigated for quinolone susceptibility and prevalence of the genes including quinolone resistance-determining ...
Xiangyun Yang, Chen Shen, Suming Zhou, Liyun Jin, Yajun Wang, Fei Yin   +5 more
doaj   +1 more source