Results 1 to 10 of about 490 (127)

Transcriptomic Diversity in the Livers of South African Sardines Participating in the Annual Sardine Run [PDF]

Genes, 2021
During austral winter, the southern and eastern coastlines of South Africa witness one of the largest animal migrations on the planet, the KwaZulu-Natal sardine run. Hundreds of millions of temperate sardines, Sardinops sagax, form large shoals that migrate north-east towards the subtropical Indian Ocean.
Arsalan Emami-Khoyi, Rynhardt Le Roux, Matthew G Adair   +2 more
exaly   +5 more sources

Important marine areas for endangered African penguins before and after the crucial stage of moulting [PDF]

Scientific Reports, 2022
The population of the Endangered African penguin Spheniscus demersus has decreased by > 65% in the last 20 years. A major driver of this decrease has been the reduced availability of their principal prey, sardine Sardinops sagax and anchovy Engraulis ...
Tegan Carpenter-Kling, Andrew de Blocq, Christina Hagen, Craig Harding, Taryn Morris, Lorien Pichegru, Jennifer Roberts, Peter G. Ryan, Ross M. Wanless, Alistair McInnes   +9 more
doaj   +2 more sources

Effects of Kudoa thyrsites on Proximate Composition and Texture of Merluccius capensis and Zues capensis. [PDF]

J Fish Dis
ABSTRACT Kudoa thyrsites is a myxosporean endoparasite that infects fish, frequently resulting in myoliquefaction, impacting the texture and eating quality of fish muscle. The aim of this study was to investigate the effects of K. thyrsites infection on the proximate composition and texture parameters of raw fillets from two South African economically ...
Henning SSC, Phakathi T.
europepmc   +2 more sources

DNA Metabarcoding Reveals Unexpected Predator-Prey-Microbial Dynamics in the Southern Right Whale (Eubalaena australis). [PDF]

Mol Ecol
ABSTRACT Southern right whale (Eubalaena australis; SRW) populations are recovering from the impacts of commercial whaling, however, recovery has been spatially variable, with strong associations between reproduction and prey availability. The diet of SRWs has not been widely examined, and with SRW foraging shifting away from high‐latitude foraging ...
Parikh A, O'Rorke R, Carroll EL, Vermeulen E, Harcourt R, Plön S, Rayment WJ, Chariton A.   +7 more
europepmc   +2 more sources

Intraspecific variation in prey quality affects the consumption rates of top predators. [PDF]

J Anim Ecol
This study reveals overlooked intraspecific variation in prey quality and its influence on predator energy budgets. By identifying key ecological drivers, we emphasize the need to integrate such variability into bioenergetic models to improve predictions of predator foraging and ecosystem responses to environmental change.
Nehasil SE, Zwolinski JP, Dorval E, Kurle CM.   +3 more
europepmc   +2 more sources

Nutrient Composition of Marine Fish Species From the East African Coast: Implications for Food and Nutrition Security. [PDF]

Food Sci Nutr
This study novel analytical data of 24 commonly consumed marine fish species from East Africa to assess their nutrient content and contribution to Codex nutrient reference values. Results showed that small fish species, typically eaten whole, are richer in key micronutrients compared to larger, filleted species. These findings highlight the nutritional
Nombo MP, Lukwambe B, Markhus MW, Ali TM, Elvevoll EO, Ho QT, Vilanculo JM, Kjellevold M.   +7 more
europepmc   +2 more sources

Head and Whisker Behaviours Observed During Foraging in Northern Elephant Seals (<i>Mirounga angustirostris</i>). [PDF]

Ecol Evol
We observed a range of behaviours during foraging, including forward swimming, vertical diving, swooping, dabbing, sweeping and rotations. Head dabbing was also sometimes accompanied by the seal producing infrasounds, the bouts of which coincided with rhythmic whisker protractions. ABSTRACT Pinnipeds use their whiskers to detect and follow hydrodynamic
Chapman M, Frouin-Mouy H, De Leo FC, Grant RA.   +3 more
europepmc   +2 more sources

Patterns of Population Genomic Variation and Evolutionary History of European Hake in the Northeastern Atlantic. [PDF]

Ecol Evol
We use for the first time whole‐genome sequencing to explore current and historical patterns of genetic diversity in European hake in the Northeastern Atlantic, focusing on the recently expanded distribution range in the North Sea. Genomic data revealed a complex scenario with three populations: North Sea, Celtic Sea and Portugal.
Pujolar JM, Gardiner CEC, von der Heyden S, Robalo JI, Castilho R, Cunha RL, Meldrup D, Henriques R, Nielsen EE.   +8 more
europepmc   +2 more sources

Assessing the South African sardine resource: two stocks rather than one? [PDF]

African Journal of Marine Science, 2015
Sardine Sardinops sagax distributed off the west and south coasts of South Africa have traditionally been assumed to comprise a single well-mixed stock for assessment and management purposes. New research, however, lends weight to the possibility of two stocks in this region.
Carryn L De Moor
exaly   +5 more sources

Microplastics in Commercially Important Small Pelagic Fish Species From South Africa

Frontiers in Marine Science, 2020
This study documented the levels of microplastics in three commercially important small pelagic fish species in South African waters, namely European anchovy (Engraulis encrasicolus), West Coast round herring (Etrumeus whiteheadi) and South African ...
Adil Bakir, Carl D. van der Lingen, Fiona Preston-Whyte, Ashok Bali, Yonela Geja, Jon Barry, Yandiswa Mdazuka, Gcobani Mooi, Denise Doran, Freya Tooley, Rogan Harmer, Thomas Maes, Thomas Maes   +12 more
doaj   +1 more source