Comparative trends in respiration rates, sinking and swimming speeds of copepods Pseudocalanus elongatus and Acartia clausi with comments on the cost of brooding strategy

Svetlichny, Leonid; Hubareva, Elena; Okyar, Melek İşinibilir

doi:10.1016/j.jembe.2016.12.005

Cited by 19 publications

(20 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At 8.0°C the mean speed of escape reaction (167 ± 39 mm/s) was close to that of the similar sized P. elongatus (149 mm/s) and A. clausi (155 mm/s), following the same temperature‐dependent relationship with Q 10 = 1.4 (Svetlichny et al, ). An increase in temperature from 8.0°C to 27.0°C led to an increase in the mean speed of escape reaction to 359 ± 33 mm/s in P. marinus due to a decrease in the duration of kicks and, correspondingly, an increase in their frequency from 64 to 150 Hz.…”

Section: Discussionmentioning

confidence: 54%

“…As discussed for Pseudodiaptomus hessei (Hart & Allanson, ), P. marinus can attach to objects or particles on the bottom, creating faster feeding water currents around the immobile body and, as a result, scanning larger volumes of water for prey per time unit (Kiørboe, ). Despite these species‐specific differences in the locomotion parameters, the trends of temperature dependence in the motor activity of P. marinus turned out to be similar to those of the Black Sea native P. elongatus and A. clausi (Svetlichny et al, ). The Q 10 for the mouthpart beat frequency (2.4) and cruising speed (1.8) in P. marinus were close to those recorded in P. elongatus (1.7 and 2.2, respectively; Svetlichny et al, ).…”

Section: Discussionmentioning

confidence: 91%

“…Despite these species‐specific differences in the locomotion parameters, the trends of temperature dependence in the motor activity of P. marinus turned out to be similar to those of the Black Sea native P. elongatus and A. clausi (Svetlichny et al, ). The Q 10 for the mouthpart beat frequency (2.4) and cruising speed (1.8) in P. marinus were close to those recorded in P. elongatus (1.7 and 2.2, respectively; Svetlichny et al, ).…”

Section: Discussionmentioning

confidence: 91%

“…This is a very small reserve of speed for free movement and nutrition in the water column. For example, non‐ovigerous females of the similar‐sized Pseudocalanus elongatus from the Black Sea were able to ascend at a speed of~3.0 mm/s and swim horizontally at ~5.0 mm/s at 25°C (Svetlichny et al, ). At this temperature the frequency of mouthparts strokes in P. elongatus was on average 45 Hz, whilst in P. marinus this parameter reached 70–80 Hz.…”

Section: Discussionmentioning

confidence: 99%

“…To record the parameters of routine behavior in 20 ml beakers, a Nikon 1 V1 digital camera at a frequency of 59 fps and natural illumination were used during 1 hr. After that, the females were transferred into 2 ml beakers (cuvette 2.0 × 1.5 × 0.7 cm in size), and the normal behavior or the escape reaction stimulated by short electric impulses (as detailed in Svetlichny, Hubareva, & Isinibilir, ) was recorded with a Nikon 1 VI digital camera equipped with long‐focus objective to produce a ﬁeld of view of ~12.0 × 4.0 mm 2 . Video recording was performed with a back collimated beam of light produced by a 5 W light‐emitting diode at 1,200 fps.…”

Section: Methodsmentioning

confidence: 99%

See 4 more Smart Citations

Response to salinity and temperature changes in the alien Asian copepod Pseudodiaptomus marinus introduced in the Black Sea

et al. 2019

Self Cite

View full text Add to dashboard Cite

The salinity tolerance and the effect of temperature were studied on the behavior and motor activity of the nonindigenous Indo‐Pacific calanoid copepod Pseudodiaptomus marinus, first found in Sevastopol Bay (Black Sea) in autumn 2016. According to the index of median lethal salinity (LS50), the salinity tolerance range of adult P. marinus collected at 18.0 psu in November 2016 and subsequently reared in the laboratory amounted to 5.0–44.0 psu, independently of the acclimation regime. Females of P. marinus collected in December 2016 at 12.0°C became torpid at 8.0°C, a value typical of winter–spring Black Sea coastal areas. An increase in temperature from 8.0°C to 27.0°C led to an increase in the beat frequency of mouth appendages, swimming speed, and time spent cruising. However, at the same high temperature, the mean cruising speed in the feeding‐current feeder P. marinus was 2‐fold lower than that of the native, similarly sized cruise feeder Pseudocalanus elongatus. On the contrary, mouthpart beat frequency while cruising was 2‐fold higher reaching 80 Hz, due to the creation of feeding currents in P. marinus. The results of our experiments confirm the euryhaline character of P. marinus, and point to an apparent ability to survive cold temperatures in a torpid state. This suggests the possibility of entering an overwintering stage to survive the adverse cold winter–spring environmental conditions of the Black Sea, similarly to the recent thermophilic Indo‐Pacific invader Oithona davisae which established a successful population in the same area.

show abstract

Section: Discussionmentioning

confidence: 54%

Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Response to salinity and temperature changes in the alien Asian copepod Pseudodiaptomus marinus introduced in the Black Sea

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

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

2022

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Copepod respiration increases by 7% per °C increase in temperature: A meta‐analysis

Heine

Abebe

Wilson

et al. 2019

Limnol Oceanogr Letters

View full text Add to dashboard Cite

Exponential increase in respiration rate with increasing temperature in poikilotherms is well documented, however, the rate of change varies greatly across copepod taxa. Studies often report magnitude of change, but the rate of change in respiration across multiple temperatures is equivocal. We used 32 studies spanning 78 yrs of research and 50 copepod species (three orders) to quantify percent change in respiration rates per one‐unit change in temperature. We found that copepod respiration rates increased by approximately 7% per °C increase in water temperature across the orders Calanoida, Cyclopoida, and Harpacticoida. Neither food availability nor scaling respiration to copepod dry weight affected the rate of change of respiration rates. Studies using Winkler titration to measure oxygen consumption produced significantly larger percent changes in respiration, whereas newer methods such as fiber optics produced smaller effects. These results have far reaching implications for understanding how copepod respiration responds to increasing water temperatures.

show abstract

Comparative trends in respiration rates, sinking and swimming speeds of copepods Pseudocalanus elongatus and Acartia clausi with comments on the cost of brooding strategy

Cited by 19 publications

References 54 publications

Response to salinity and temperature changes in the alien Asian copepod Pseudodiaptomus marinus introduced in the Black Sea

Response to salinity and temperature changes in the alien Asian copepod Pseudodiaptomus marinus introduced in the Black Sea

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

Copepod respiration increases by 7% per °C increase in temperature: A meta‐analysis

Contact Info

Product

Resources

About