Different diatoms induce contrasting effects on the reproductive success of the copepod Temora stylifera

Ceballos, Sara; Ianora, Adrianna

doi:10.1016/s0022-0981(03)00263-6

Cited by 65 publications

(51 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our results indicate that the concentration affecting hatching success in both copepod species was one order of magnitude lower than those recorded in previous incubation experiments [e.g. 1·g·ml -1 in incubation experiments Ceballos and Ianora, 2003;Taylor et al, 2007)]. Concentrations blocking hatching success in our experiments were much lower in both T. stylifera (97·ng DD) and C. helgolandicus (121·ng DD) considering filtration rates of 0.14·ml·h -1 per copepod (Buttino et al, 2006) and incubation concentrations of 2.9·ng·ml -1 and 3.6·ng·ml -1 DD, respectively, for 10·days.…”

Section: Discussioncontrasting

confidence: 71%

Aldehyde-encapsulating liposomes impair marine grazer survivorship

Buttino

Rosa

Carotenuto

et al. 2008

Journal of Experimental Biology

Self Cite

View full text Add to dashboard Cite

SUMMARYIn the last decade, there has been an increased awareness that secondary metabolites produced by marine diatoms negatively impact the reproductive success of their principal predators, the copepods. Several oxylipins, products of the enzymatic oxidation of fatty acids, are produced when these unicellular algae are damaged, as occurs during grazing. In the past, the dinoflagellate Prorocentrum minimum, which does not produce the oxylipin 2-trans,4-trans-decadienal (DD), has been used as a live carrier to calculate daily ingestion rates of this molecule by copepod crustaceans. However, since the interaction between oxylipins and live carriers is unknown, the question as to how much and for how long ingestion of these molecules affects copepod reproduction remains a critical point to understanding the functional role of such compounds at sea. In the investigation presented here we used giant liposomes (~7·m) as a delivery system for the oxylipin DD, prepared in the same size range as copepod food and containing known amounts of DD. The aim of this work was to relate the ingestion of DD to the reproductive failure of the copepods Temora stylifera and Calanus helgolandicus. Liposomes were very stable over time and after 10·days of feeding, liposomes encapsulating DD reduced egg hatching success and female survival with a concomitant appearance of apoptosis in both copepod embryos and female tissues. Concentrations of DD inducing blockage were one order of magnitude lower that those used in classical feeding experiments demonstrating that liposomes are a useful tool to quantitatively analyze the impact of toxins on copepods.

show abstract

Section: Discussioncontrasting

confidence: 71%

Aldehyde-encapsulating liposomes impair marine grazer survivorship

Buttino

Rosa

Carotenuto

et al. 2008

Journal of Experimental Biology

Self Cite

View full text Add to dashboard Cite

show abstract

“…The diet used for T. longicornis proved insufficient to support metamorphosis of T. stylifera nauplii to the first copepodite stage. We therefore augmented the T. stylifera diet with P. minimum and I. galbana, which are both highquality food for egg production and development of T. stylifera (Carotenuto et al 2002, Ceballos & Ianora 2003. When field-collected individuals reached maturity, they were used in mating experiments.…”

Section: Methodsmentioning

confidence: 99%

Heterospecific mating and species recognition in the planktonic marine copepods Temora stylifera and T. longicornis

Goetze¹,

Kiørboe²

2008

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Many planktonic copepods use diffusible pheromone or hydromechanical signals to remotely detect the presence of potential mates. To determine whether these mating signals also play a role in species recognition and mate choice, we observed and video recorded (3D) mate-finding and pursuit behaviors in heterospecific and conspecific mating crosses in a pair of congeneric, partially sympatric species (Temora stylifera and T. longicornis) in the laboratory. The species appear to have asymmetrical pre-mating isolation, with T. longicornis males readily pursuing T. stylifera females to mate contact and capture, but with little mate-finding activity observed in the reverse cross. Males of T. longicornis pursuing heterospecific females executed a number of behaviors known to facilitate successful pheromone trail following and mate capture in conspecific mating, including accelerated swimming in a 'signal-scanning' mode to recover a lost pheromone trail, reversal of the tracking direction in cases when the male initiated tracking in the incorrect direction, and accelerated swimming speeds when in the presence of a pheromone signal but prior to locating the trail. Detailed analyses of mate-tracking behavior in T. longicornis male × T. stylifera female crosses gave no indication that males were aware they were pursuing heterospecific females prior to mate contact, indicating that diffusible pheromone and hydromechanical signals are not used, either singly or in combination, for species recognition in this mating pair. Heterospecific mating attempts among sympatric, congeneric copepods may commonly proceed to mate capture, and incur fitness costs to either or both mating partners. KEY WORDS: Mate choice · Behavioral isolation · Mating asymmetry · Diffusible pheromone · Hydromechanical signalsResale or republication not permitted without written consent of the publisher

show abstract

“…Hjorth & Nielsen 2011, Kjellerup et al 2012) without apparent detrimental effects on physiology. Nonetheless, this diatom diet has been shown to affect egg production and hatching success in the long term (14 d) in another copepod species (Temora stylifera, Ceballos & Ianora 2003), and feeding of C. helgo landicus on toxic diatom Skeletonema marinoi re sulted in upregulation of genes involved in protein folding or degradation, and re-organization of actin and tubulin filaments (Carotenuto et al 2014). …”

Section: Reliability Of Approachmentioning

confidence: 99%

Contrasting transcriptome response to thermal stress in two key zooplankton species, Calanus finmarchicus and C. glacialis

Smolina¹,

Kollias²,

Møller³

et al. 2015

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Climate change has already led to the range expansion of warm-water plankton assemblages in the northeast Atlantic and the corresponding range contraction of colder-water species. The temperate copepod Calanus finmarchicus is predicted to shift farther northward into polar waters traditionally dominated by the arctic copepod C. glacialis. To identify temperaturemediated changes in gene expression that may be critical for the thermal acclimation and resilience of the 2 Calanus spp., we conducted a whole transcriptome profiling using RNA-seq on an Ion Torrent platform. Transcriptome responses of C. finmarchicus and C. glacialis from Disko Bay, west Greenland, were investigated under realistic thermal stresses (at + 5, +10 and +15°C) for 4 h and 6 d. C. finmarchicus showed a strong response to temperature and duration of stress, involving up-regulation of genes related to protein folding, transcription, translation and metabolism. In sharp contrast, C. glacialis displayed only low-magnitude changes in gene expression in response to temperature and duration of stress. Differences in the thermal responses of the 2 species, particularly the lack of thermal stress response in C. glacialis, are in line with laboratory and field observations and suggest a vulnerability of C. glacialis to climate change.

show abstract

Different diatoms induce contrasting effects on the reproductive success of the copepod Temora stylifera

Cited by 65 publications

References 28 publications

Aldehyde-encapsulating liposomes impair marine grazer survivorship

Aldehyde-encapsulating liposomes impair marine grazer survivorship

Heterospecific mating and species recognition in the planktonic marine copepods Temora stylifera and T. longicornis

Contrasting transcriptome response to thermal stress in two key zooplankton species, Calanus finmarchicus and C. glacialis

Contact Info

Product

Resources

About