Swimming behaviour of developmental stages of the calanoid copepod Temora longicornis at different food concentrations

The article deals with the data about new find of the rare suctorian species Acineta euchaetae Sewell, 1951 on calanoid copepod host Euchaeta marina (Prestandrea, 1833) from the Arabian Sea. Seven young (sub-adult) individuals of the ciliate were observed on rear part of cephalothorax and on abdomen of adult male of copepod. The data about all known finds of A. euchaetae are discussed as well as the information on different developmental stages of the ciliate species. It is suggested that A. euchaetae is euryhaline species distributed in Eurasian coastal and inland waters and have preference for calanoid copepod hosts, but do not show specificity to any calanoid genus or species. The summarized diagnosis and refined systematic position of A. euchaetae are also provided.

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The postembryonic developmental stages of a fresh-water calanoid copepod, epischura massachusettsensis pearse

Journal of Morphology ◽

10.1002/jmor.1050960303 ◽

1955 ◽

Vol 96 (3) ◽

pp. 441-471 ◽

Cited By ~ 7

Author(s):

Arthur G. Humes

Keyword(s):

Fresh Water ◽

Calanoid Copepod ◽

Developmental Stages

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Distribution and structure of sub-cuticular glands in the copepod Temora longicornis

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315400032665 ◽

1993 ◽

Vol 73 (1) ◽

pp. 97-107 ◽

Cited By ~ 7

Author(s):

N. J. Bannister

Keyword(s):

Secretory Cell ◽

Calanoid Copepod ◽

Duct Cell ◽

The Body ◽

Temora Longicornis ◽

Pore Opening ◽

Secretory Glands

The calanoid copepod Temora longiornis (Müller) has sub-cuticular secretory glands located on both the body and swimming legs. The glands are tri-cellular, consisting of a secretory cell (producing a proteinaceous secretion) opening through a cuticular pore, a collar cell surrounding the neck of the secretory cell, and a duct cell which lines the pore opening. The possible function of the secretion is discussed.

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Intoxicated copepods: ingesting toxic phytoplankton leads to risky behaviour

Proceedings of The Royal Society B Biological Sciences ◽

10.1098/rspb.2016.0176 ◽

2016 ◽

Vol 283 (1829) ◽

pp. 20160176 ◽

Cited By ~ 7

Author(s):

Rachel S. Lasley-Rasher ◽

Kathryn Nagel ◽

Aakanksha Angra ◽

Jeannette Yen

Keyword(s):

Egg Production ◽

Harmful Algal Bloom ◽

Swimming Behaviour ◽

Risky Behaviour ◽

Alexandrium Fundyense ◽

Marine Systems ◽

Treatment Models ◽

Temora Longicornis ◽

The Common ◽

Hab Species

Understanding interactions between harmful algal bloom (HAB) species and their grazers is essential for determining mechanisms of bloom proliferation and termination. We exposed the common calanoid copepod, Temora longicornis to the HAB species Alexandrium fundyense and examined effects on copepod survival, ingestion, egg production and swimming behaviour. A. fundyense was readily ingested by T. longicornis and significantly altered copepod swimming behaviour without affecting copepod survival or fitness. A. fundyense caused T. longicornis to increase their swimming speed, and the straightness of their path long after the copepods had been removed from the A. fundyense treatment. Models suggest that these changes could lead to a 25–56% increase in encounter frequency between copepods and their predators. This work highlights the need to determine how ingesting HAB species alters grazer behaviour as this can have significant impacts on the fate of HAB toxins in marine systems.

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