Respiratory studies on two benthic copepods Acanthocyclops viridis and Eucyclops agilis at environmental temperatures

Laybourn‐Parry, Johanna; Tinson, Stuart

doi:10.1007/bf00379674

Cited by 7 publications

(2 citation statements)

References 18 publications

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“…Furthermore when the respiration rates of some of these species are measured after a period of anoxia there is no detectable respiratory rebound (Laybourn-Parry &Tinson, unpublished) compared to their normal respiration rates (Laybourn-Parry & Tinson, 1985). This situation contrasts with that demonstrated in C. varicans (M. varicans) (Chaston, 1969).…”

Section: Discussionmentioning

confidence: 42%

The behavioural responses and tolerance of freshwater benthic cyclopoid copepods to hypoxia and anoxia

Tinson

Laybourn‐Parry

1985

Hydrobiologia

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The response of four benthic cyclopoid copepods, Acanthocyclops viridis (Megacyclops viridis) (Jurine, 1820), Macrocyclops albidus (Jurine), Eucyclops agilis (Koch, Sars) (Eucyclops serrulatus) (Fischer, 185 1) and Paracyclopsfirnbriatus (Fischer), to hypoxia and anoxia was investigated. All of these species died within six hours when confronted by totally anoxic conditions, but all survived four days at oxygen saturation levels as low as 25%. Males succumbed to the effects of anoxia more rapidly than the larger females of each species, and larger species survived for shorter periods than smaller species. In artificially stratified columns, where the lower layer was anoxic, all four species displayed an upward migratory response towards oxygenated conditions. Where the artificial hypolimnion was hypoxic, however, the migratory response was not observed. The results suggest that some benthic copepods cope with seasonal anoxia in eutrophic stratified lakes by migration rather than the various physiological adaptations shown by planktonic and semi-planktonic species.

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Section: Discussionmentioning

confidence: 42%

The behavioural responses and tolerance of freshwater benthic cyclopoid copepods to hypoxia and anoxia

Tinson

Laybourn‐Parry

1985

Hydrobiologia

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“…Swimming activity affects the metabolism of zooplanktonic organisms (cf., Ikeda et al, 2000). Many studies investigated the rate of oxygen consumption in freshwater cyclopoids (Di Lorenzo & Galassi, 2017; Di Lorenzo et al 2014; Gnaiger, 1993; Gyllenberg & Lundqvist, 1976; Laybourn‐Parry & Strachan, 1980; Laybourn‐Parry & Tinson, 1985; Pasternak et al, 1995) and marine species of the Oithonidae family (including O. davisae ; Atienza et al, 2006; Castellani et al, 2005; Hiromi et al, 1988; Ikeda et al, 2001; Lampitt, 1978; Lampitt & Gamble, 1982; Nakamura & Turner, 1997; Nakata & Nakane, 1987; Svetlichny et al, 2016, 2021). However, the most convincing experimental confirmation of a relationship between respiration rate and swimming speed was obtained in a study of the cyclopoid copepod Dioithona oculata (Buskey, 1998).…”

Section: Introductionmentioning

confidence: 99%

Swimming and respiration in cyclopoid copepods Thermocyclops oithonoides and Oithona davisae and calanoid copepod Paracalanus parvus

2022

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Cyclopoid and calanoid copepods differ in how they move. Cyclopoid copepods use the thoracic legs for cruise and escape swimming while most calanoid copepods use the cephalic appendages for cruise swimming and the thoracic legs for escape reactions. Apart from this gross difference, little is known on the comparative aspects of the locomotor function of copepod appendages. This study investigated the main kinematic patterns of cruise and escape swimming of two small cyclopoid copepods, Thermocyclops oithonoides and Oithona davisae, and a small calanoid copepod, Paracalanus parvus, by video filming at a frame rate of up to 1200 frames/s. During escape swimming, O. davisae and the twice as large P. parvus showed similar movement, jumping at a frequency of 150 Hz and moving at 12 cm s −1 ; however, at a lower jump frequency (∼100 Hz), the cyclopoid T. oithonoides showed an almost two times faster escape swimming than that of P. parvus which has the same body size. This higher speed can be linked to the greater role of the longer abdomen for the flopping strokes in T. oithonoides. In accordance with the Arrhenius law, the kinematic parameters of cruise and escape swimming of T. oithonoides showed temperature dependence in the range of 6.5-27°С. At a temperature of about 20°C, the respiration rate of O. davisae and P. parvus was 1.6 times higher (i.e., ∼1.5 µg O 2 mg −1 h −1 ) than in T. oithonoides during normal swimming; however, in the swarming state, the respiration rate of T. oithonoides increased 3.4 times to 3.0 µg O 2 mg −1 h −1 , which was nine times higher than the respiratory rate of anesthetized individuals of this species. Based on the speed and duration of locomotor acts, the cyclopoid T. oithonoides consumed about the same amount of respiratory energy as the calanoid P. parvus, but the mechanical energy required for movement in jumps mode was 1.5 times higher.

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The distribution and abundance of benthic cyclopoid copepods in Esthwaite Water, Cumbria

Tinson

Laybourn‐Parry

1986

Hydrobiologia

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The spatial and temporal distribution of the benthic cyclopoid copepods, Acanthocyclops viridis, Acanthocyclops bicuspidatus, Eucyclops agilis, Paracyclops fimbriatus and Macrocyclops albidus in a small eutrophic lake Esthwaite Water, Cumbria was investigated in 1982 and 1983. The behavioural and physiological mechanisms by which these organisms cope with the conditions of hypoxia and anoxia prevalent during seasonal stratification of the lake waters was considered. During stratification all of these species, with the exception of resting stage A. bicuspidatus, disappeared from the profundal zone and were limited to the shallower margins of the lake. None of these copepod species entered the plankton and established planktonic populations, none appeared capable of sustained anaerobic respiration, although all can withstand some degree of hypoxia, and only A. bicuspidatus appeared capable of entering resting stages. The data suggest that in eutrophic lakes species normally found in the profundus deal with anoxia by lateral migration to shallow waters where oxygen is available.

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Respiratory studies on two benthic copepods Acanthocyclops viridis and Eucyclops agilis at environmental temperatures

Cited by 7 publications

References 18 publications

The behavioural responses and tolerance of freshwater benthic cyclopoid copepods to hypoxia and anoxia

The behavioural responses and tolerance of freshwater benthic cyclopoid copepods to hypoxia and anoxia

Swimming and respiration in cyclopoid copepods Thermocyclops oithonoides and Oithona davisae and calanoid copepod Paracalanus parvus

The distribution and abundance of benthic cyclopoid copepods in Esthwaite Water, Cumbria

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