Results 11 to 20 of about 31,260 (265)

Parental investment matters for maternal and offspring immune defense in the mouthbrooding cichlid Astatotilapia burtoni

open access: yesBMC Evolutionary Biology, 2017
Background Parental care, while increasing parental fitness through offspring survival, also bears cost to the care-giving parent. Consequentially, trade offs between parental care and other vitally important traits, such as the immune system seem ...
Isabel S. Keller   +2 more
doaj   +1 more source

Fishery biology of lessepsian immigrant squirrelfishes Sargocentron rubrum (Forsskål, 1775), Eastern Mediterranean Sea, Egypt

open access: yesEgyptian Journal of Aquatic Research, 2018
Lessepsian Sargocentron rubrum has become common in the artisanal and semi-industrial fisheries catch. It was collected monthly from the landing site of Alexandria (Anfoushy) during 2016. Fish specimens ranged from 9.6 to 23 cm (TL) with an average of 17.
Mahmoud M.S. Farrag   +4 more
doaj   +1 more source

Electroreception in marine fishes: chondrichthyans [PDF]

open access: yesJournal of Fish Biology, 2019
AbstractElectroreception in marine fishes occurs across a variety of taxa and is best understood in the chondrichthyans (sharks, skates, rays, and chimaeras). Here, we present an up‐to‐date review of what is known about the biology of passive electroreception and we consider how electroreceptive fishes might respond to electric and magnetic stimuli in ...
Kyle C. Newton   +2 more
openaire   +2 more sources

Anatomical and histological adaptations of digestive tract in relation to food and feeding habits of lizardfish, Synodus variegatus (Lacepède, 1803)

open access: yesEgyptian Journal of Aquatic Research, 2019
The adaptations in anatomical and histological structures of the digestive tract of fish are correlated with their food and feeding habits. An understanding of these habits is essential to emphasize the related functional mechanisms of fish digestive ...
Ahmed N. Alabssawy   +2 more
doaj   +1 more source

DNA barcoding and misidentification of some marine fish species in Nigerian industrial trawl fishery

open access: yesScientific African, 2023
Identification of marine fishes across their geographical distribution is based primarily on morphological features. The ability of marine fishes to adapt to environmental changes sometimes leads to morphological differences that might give rise to wrong
Dunsin Abimbola Bolaji   +2 more
doaj   +1 more source

Evidence of unidirectional gene flow in a fragmented population of Salmo trutta L.

open access: yesScientific Reports, 2021
Selection, genetic drift, and gene flow affect genetic variation within populations and genetic differences among populations. Both drift and selection tend to decrease variation within populations and increase differences among populations, whereas gene
Rafał Bernaś   +6 more
doaj   +1 more source

Size Selective Harvesting Does Not Result in Reproductive Isolation among Experimental Lines of Zebrafish, Danio rerio: Implications for Managing Harvest-Induced Evolution

open access: yesBiology, 2021
Size-selective mortality is common in fish stocks. Positive size-selection happens in fisheries where larger size classes are preferentially targeted while gape-limited natural predation may cause negative size-selection for smaller size classes. As body
Tamal Roy   +4 more
doaj   +1 more source

Evolutionary patterns of diadromy in fishes: more than a transitional state between marine and freshwater

open access: yesBMC Evolutionary Biology, 2019
Background Across the tree of life there are numerous evolutionary transitions between different habitats (i.e., aquatic and terrestrial or marine and freshwater).
Joel B. Corush
doaj   +1 more source

Skin Mucus of Marine Fish as a Source for the Development of Antimicrobial Agents

open access: yesFrontiers in Marine Science, 2020
Fish skin mucus is an important component of the innate immune mechanism and provides a first barrier against pathogens. Although several studies investigated and demonstrated the antimicrobial properties of skin mucus of fishes, most of them tested ...
Francesco Tiralongo   +5 more
doaj   +1 more source

British Marine Fishes [PDF]

open access: yesNature, 1959
The Observer's Book of Sea Fishes By A. Laurence Wells. Pp. 160 + 64 plates. (London and New York: Frederick Warne and Co., Ltd., 1958.) 5s. net.
openaire   +1 more source

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