Results 171 to 180 of about 3,828 (219)
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Vibration Perception by Chaetognaths
Nature, 1972THE manner in which chaetognaths feed deserves careful examination because they are abundant and cosmopolitan planktonic predators. When these animals feed, they hang motionlessly and then dart at prey which swim near. The exact means by which they perceive or locate prey around them is only partially understood.
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2022
This chapter deals with the luminescent species of Chaetognatha viz. Caecosagitta macrocephala and Eukrohnia fowleri,their emission maxima and mechanism of bioluminescence.
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This chapter deals with the luminescent species of Chaetognatha viz. Caecosagitta macrocephala and Eukrohnia fowleri,their emission maxima and mechanism of bioluminescence.
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Non-carnivorous feeding in Arctic chaetognaths
Progress in Oceanography, 2020Abstract Chaetognaths (arrow worms) are important components of zooplankton communities in terms of abundance, biomass and contribution to carbon export. Though traditionally considered strict carnivores, recent studies have identified “omnivorous” chaetognaths. These may feed on non-animal materials, including algae, detritus or sediments.
Moritz Schmid
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The discovery of acanthocephalans parasitizing chaetognaths
Acta Parasitologica, 2017AbstractA comprehensive literature review shows that 12 types of pathogens, micropredators and parasites are reported to interact with chaetognaths, mostly digenean trematodes, cestodes and nematodes larval stages. Through analysis of 78,152 chaetognaths from a monthly zooplankton time series (Jan 1996–Dec 1998) collected in the Mexican Central Pacific
Horacio, Lozano-Cobo +3 more
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2009
The knowledge of chaetognaths in the two Costa Rican coasts is both scarce and asymmetrical. Less than 20% of the number of potential species (115) have been effectively recorded from this country. The Pacific side has been sur- veyed much more intensely than the Caribbean coast.
Eduardo Suárez-Morales +2 more
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The knowledge of chaetognaths in the two Costa Rican coasts is both scarce and asymmetrical. Less than 20% of the number of potential species (115) have been effectively recorded from this country. The Pacific side has been sur- veyed much more intensely than the Caribbean coast.
Eduardo Suárez-Morales +2 more
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Cryptic tRNAs in chaetognath mitochondrial genomes
Computational Biology and Chemistry, 2016The chaetognaths constitute a small and enigmatic phylum of little marine invertebrates. Both nuclear and mitochondrial genomes have numerous originalities, some phylum-specific. Until recently, their mitogenomes seemed containing only one tRNA gene (trnMet), but a recent study found in two chaetognath mitogenomes two and four tRNA genes.
Barthelemy, Roxane-Marie +1 more
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Paleontological Research, 2011
Abstract. Despite their small sizes (ca. 2–120 mm), chaetognaths, or arrow worms, are the most important planktonic carnivorous predators both in terms of biomass and abundance, and they represent the second most important component of modern marine ecosystems.
David Casenove +2 more
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Abstract. Despite their small sizes (ca. 2–120 mm), chaetognaths, or arrow worms, are the most important planktonic carnivorous predators both in terms of biomass and abundance, and they represent the second most important component of modern marine ecosystems.
David Casenove +2 more
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Chaetognaths in lower Narragansett Bay
Deep Sea Research Part B. Oceanographic Literature Review, 1980A field study of the chaetognaths of lower Narragansett Bay was conducted from March 1975 through May 1976.Sagitta elegans Verrill 1873 was the predominant species, present in all months except August.S. elegans was most abundant in April and May in both 1975 and 1976. Maximum densities exceeded 100 m−3 in May 1976. It appeared thatS.
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A Possible Lower Cambrian Chaetognath (Arrow Worm)
Science, 2002The phylum Chaetognatha (also called arrow worm), with only about 100 living species, is found in oceans throughout the world and plays an important role in the food web as primary predators ([1][1]). Its fossil record, however, is sparse. The Carboniferous Paucijaculum samamithion has been the only definitive fossil chaetognath ([2][2]).
Jun-Yuan, Chen, Di-Ying, Huang
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1991
Abstract All depths of the oceans below 1000 m are considered here as deep sea. There are relatively few samples from this region, and even fewer from more precisely defined depths, so that knowledge of deep sea chaetognaths is incomplete and fragmentary and only single individuals or a few specimens have been caught so far for a number ...
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Abstract All depths of the oceans below 1000 m are considered here as deep sea. There are relatively few samples from this region, and even fewer from more precisely defined depths, so that knowledge of deep sea chaetognaths is incomplete and fragmentary and only single individuals or a few specimens have been caught so far for a number ...
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