Results 11 to 20 of about 1,321 (133)

Convergent Evolutionary Dead-End and Breakdown of Hard Chorion in Parental-Egg-Care Fish Reproductive Strategies. [PDF]

Mol Ecol
ABSTRACT Fish exhibit a diverse array of reproductive strategies adapted to various ecological niches. Parental egg‐care, including live‐bearing, mouth‐brooding, and male egg protection by brood pouches, represents an effective strategy for ensuring larval survival and has emerged independently in multiple lineages.
Nagasawa T, Machii N, Aibara M, Kawaguchi M, Yasumasu S, Nikaido M.   +5 more
europepmc   +2 more sources

Submissions of diagnostic samples of two critically endangered species of handfish (Branchionichthys hirsutus and Thymichthys politus) from a public aquarium from 2018 to 2024. [PDF]

J Fish Dis
Abstract Handfish (Family Brachionichthyidae) is the most threatened marine teleost fish family, however, there is little information on handfish health. We reviewed the results of submissions of mortalities from captive and captive bred spotted handfish (Branchionichthys hirsutus (Lacepède, 1804)) and red handfish (Thymichthys politus (Richardson ...
Nowak BF, Knowles G, Handlinger J, Hawkins R, Jantawongsri K, Dang M, Thompson A, van Gelderen R, Bott NJ.   +8 more
europepmc   +2 more sources

Design and Validation of an Open-Close Device for Integrated Environmental DNA Sampling Detects A Depth Gradient in Indian Ocean Deep-Sea Fish Assemblages. [PDF]

Ecol Evol
The goal of this study was to leverage existing survey technology to design and test an eDNA sampler that captures an integrated eDNA sample over the length of a deep‐water transect. We provide a biological interpretation of the resulting data, demonstrating the usefulness of such technology to understand the ocean environments, using fish species as ...
Bessey C, Martini A, Currie A, Ponsonby W, Tyndall A, Crossing R, Salazar VW, Dawkins KL, Pogonoski JJ, Moore G, Mortimer N, Keesing JK.   +11 more
europepmc   +2 more sources

DNA barcoding the ichthyofauna of the Beibu Gulf: Implications for fisheries management in a seafood market hub

Ecology and Evolution, Volume 13, Issue 12, December 2023., 2023
The fish fauna of the beibu gulf, one of the largest sea food hubs in Southeast Asia, is characterized here by DNA barcoding. The 1080 DNA barcodes analyzed show concordance between morphological identifications and DNA‐based species delimitation. Lower level of diversity detected here compared to historical observations is concordant with the stock ...
Changping Jiang, Murong Yi, Zhisen Luo, Xiongbo He, Hung‐Du Lin, Nicolas Hubert, Yunrong Yan   +6 more
wiley   +1 more source

Lymphocyte pathway analysis using naturally lymphocyte‐deficient fish

European Journal of Immunology, Volume 53, Issue 12, December 2023., 2023
Loss of phenotypic characters is often accompanied by degradation of trait‐specific genetic components. Genome analysis of teleosts lacking canonical components of the adaptive immune system distinguishes trait‐specific from pleiotropic genes governing lymphocyte differentiation.
Gaoqun Zhang, Jeremy B. Swann, Marius Felder, Connor O'Meara, Thomas Boehm   +4 more
wiley   +1 more source

Foxn1 is not essential for T‐cell development in teleosts

European Journal of Immunology, Volume 53, Issue 12, December 2023., 2023
In contrast to the situation in mammals, loss of the foxn1 gene in teleosts does not abolish the lymphopoietic capacity of the thymus. This result suggests that in teleosts, genetic control of thymopoiesis is functionally redundant, likely owing to the activity of the Foxn4 transcription factor.
Michael Schorpp, Jeremy B. Swann, Isabell Hess, Hsuan‐Ching Ho, Theodore W. Pietsch, Thomas Boehm   +5 more
wiley   +1 more source

Insights into the diet and trophic ecology of white sharks (Carcharodon carcharias) gained through DNA metabarcoding analyses of cloacal swabs

Environmental DNA, Volume 5, Issue 6, Page 1362-1377, November 2023., 2023
This study explores the diet of one of the world's most recognizable predators, the white shark. Dietary assessments are performed by genomic analysis of cloacal swabs collected from approximately 200 live sharks. Findings from this study provide insights into the trophic ecology and feeding behavior of the white shark and key marine resources ...
Zach S. R. Clark, Jessica J. Fish, Paul A. Butcher, Owen J. Holland, Craig D. H. Sherman, Justin Rizzari, Andrew R. Weeks, Adam D. Miller   +7 more
wiley   +1 more source

Skeletal ontogeny of the Plainfin Midshipman, Porichthys notatus (Percomorphacea: Batrachoidiformes)

Journal of Anatomy, Volume 242, Issue 3, Page 447-494, March 2023., 2023
Description of skeletal ontogeny during early life history of Porichthys notatus. Establishment that the previously described as dorsalmost pectoral radial is homologous to the propterygium. Unique developmental pathway of the posterior basibranchial cartilage, first appearing as paired elements which fuse in later stages.
Diego F. B. Vaz, Eric J. Hilton
wiley   +1 more source

Evolutionary time and species diversity in aquatic ecosystems worldwide

Biological Reviews, Volume 97, Issue 6, Page 2090-2105, December 2022., 2022
ABSTRACT The latitudinal diversity gradient (LDG) is frequently described as the most dramatic biodiversity pattern on Earth, yet ecologists and biogeographers have failed to reach consensus on its primary cause. A key problem in explaining the LDG involves collinearity between multiple factors that are predicted to affect species richness in the same ...
Daniel L. Rabosky
wiley   +1 more source

Update of the risk assessment of hexabromocyclododecanes (HBCDDs) in food

EFSA Journal, Volume 19, Issue 3, March 2021., 2021
Abstract The European Commission asked EFSA to update its 2011 risk assessment on hexabromocyclododecanes (HBCDDs) in food. HBCDDs, predominantly mixtures of the stereoisomers α‐, β‐ and γ‐HBCDD, were widely used additive flame retardants. Concern has been raised because of the occurrence of HBCDDs in the environment, food and in humans.
EFSA Panel on Contaminants in the Food Chain (CONTAM), Dieter Schrenk, Margherita Bignami, Laurent Bodin, James Kevin Chipman, Jesús del Mazo, Bettina Grasl‐Kraupp, Christer Hogstrand, Laurentius (Ron) Hoogenboom, Jean‐Charles Leblanc, Carlo Stefano Nebbia, Elsa Nielsen, Evangelia Ntzani, Annette Petersen, Salomon Sand, Tanja Schwerdtle, Heather Wallace, Diane Benford, Peter Fürst, Martin Rose, Sofia Ioannidou, Marina Nikolič, Luisa Ramos Bordajandi, Christiane Vleminckx   +23 more
wiley   +1 more source