Diel feeding rhythm of copepod size-fractions from Coliumo Bay, Central Chile
The feeding behaviour of the size fractionated copepod assemblage was studied over a diel cycle in Coliumo Bay. In this shallow environment the photic layer reached the bottom and salinity, temperature, and food availability were fairly homogeneous ...
Danilo Calliari, Tarsicio Antezana
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Diel feeding chronology of six fish species in Anchuthengu backwater, Kerala [PDF]
The study examined diel feeding chronology of six fish species in Anchuthengu backwater, Kerala. Over the 24h period, more or less same items contributed to the diet of Arius arius. Mugil cephalus exhibited substantial diel variation in diet composition,
Rajukumar, B., Ritakumari, S.D.
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Predator Chemical Cue Effects on the Diel Feeding Behaviour of Marine Protists [PDF]
We have assessed the effect of copepod chemical cues on the diel feeding rhythms of heterotrophic and mixotrophic marine protists. All phagotrophic protists studied exhibited relatively high diurnal feeding rates. The magnitude of the diel feeding rhythm, expressed as the quotient of day and night ingestion rates, was inversely related to the time that
Anna Arias +3 more
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Diel feeding and respiration rhythms in zooplankton1 [PDF]
Diel rhythms in respiration and feeding of zooplankton from three British Columbia lakes were examined in laboratory experiments conducted at constant temperature and in the absence of light. Endogenous rhythms in respiration and feeding were demonstrated at temperatures from 10–22°C and were typically bimodal with maximum rates found at dawn and dusk ...
W. S. Duval, G. H. Geen
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Blue whiting Micromesistius poutassou diel feeding behaviour in the Irminger Sea [PDF]
With warming ocean temperatures, the abundance of blue whiting Micromesistius poutassou is increasing in the waters around Greenland. However, in this region, knowledge about the species’ trophic role in the ecosystem is scarce. Consequently, we investigated the diet composition and diel feeding behaviour of blue whiting in the north-eastern part of ...
Post, Søren +4 more
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Daily feeding rhythm linked to microbiome composition in two zooplankton species.
Host-associated microbial communities are impacted by external and within-host factors, i.e., diet and feeding behavior. For organisms known to have a circadian rhythm in feeding behavior, microbiome composition is likely impacted by the different rates ...
Alaina Pfenning-Butterworth +2 more
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Oxygen minimum zone: An important oceanographic habitat for deep-diving northern elephant seals, Mirounga angustirostris. [PDF]
Little is known about the foraging behavior of top predators in the deep mesopelagic ocean. Elephant seals dive to the deep biota-poor oxygen minimum zone (OMZ) (>800 m depth) despite high diving costs in terms of energy and time, but how they ...
Adachi, Taiki +6 more
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Diel feeding migrations in tropical reef fishes [PDF]
1. Many tropical reef fishes that feed during the day rest at night, whereas many that feed at night rest during the day. The feeding grounds of many are some distance from their resting grounds. Thus they migrate between these two locations during twilight as part of a general changeover between diurnal and nocturnal situations. 2.
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Temporal changes in species richness and fish composition in a submerged vegetation habitat in Veracruz, Mexico [PDF]
Background. Because estuarine fish communities undergo temporal changes in abundance and species composition, the influence of environmental factors on diel and seasonal variation in the structure of a fish community was evaluated.
M. Castillo-Rivera +2 more
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Differences in the trophic ecology of micronekton driven by diel vertical migration. [PDF]
Many species of micronekton perform diel vertical migrations (DVMs), which ultimately contributes to carbon export to the deep sea. However, not all micronekton species perform DVM, and the nonmigrators, which are often understudied, have different ...
Angel M. V. +6 more
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