Annual cycle of early developmental stage survival and recruitment in the copepods Temora stylifera and Centropages typicus

Carotenuto, Ylenia; Ianora, Adrianna; Pinto, Mario Di; Sarno, Diana; Miralto, Antonio

doi:10.3354/meps314227

Cited by 28 publications

(28 citation statements)

References 53 publications

(63 reference statements)

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“…Hatching success and production of abnormal larvae did not improve when females were offered a favourable food such as the dinoflagellate Prorocentrum minimum. Carotenuto et al (2006) did not find a relation between diatom concentrations and copepod hatching success during a 1-year study in the Gulf of Naples, Italy, but did report low survivorship of hatched nauplii. They found that hatching success was generally [80% in the copepods Temora stylifera and Centropages typicus, but survivorship of the first naupliar stage was very low, with mean values of 12% in T. stylifera and 67% in C. typicus.…”

Section: Laboratory Studies On Diatom-copepod Interactionsmentioning

confidence: 59%

“…Laboratory experiments showed that maternal feeding on Isochrysis galbana or Prorocentrum minimum for 7 days did not enhance naupliar survival in either copepod species, indicating that the negative effects of maternal diets did not disappear after feeding on a high quality food. Carotenuto et al (2006) explained the more attenuated effects of diatoms on copepod hatching success to the highly diversified and short lasting blooms in the Gulf of Naples compared to the intense, long lasting (3 months) and almost monospecific diatom blooms that characterize the Adriatic Sea . Hence the ''diatom effect'' was diluted and more apparent after hatching, during the nauplius one stage.…”

Section: Laboratory Studies On Diatom-copepod Interactionsmentioning

confidence: 95%

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Toxigenic effects of diatoms on grazers, phytoplankton and other microbes: a review

2009

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Traditionally, diatoms have been regarded as providing the bulk of the food that sustains the marine food chain and important fisheries. However, this view was challenged almost two decades ago on the basis of laboratory and field studies showing that when copepods, the principal predators of diatoms, feed on certain diatom diets, they produce abnormal eggs that either fail to develop to hatching or hatch into malformed (i.e. teratogenic) nauplii that die soon afterwards. Over the years, many explanations have been advanced to explain the causes for reproductive failure in copepods and other marine and freshwater invertebrates including diatom toxicity, or nutritional deficiency and poor assimilation of essential compounds in the animal gut. Here we review the literature concerning the first possibility, that diatoms produce cytotoxic compounds responsible for growth inhibition and teratogenic activity, potentially sabotaging future generations of grazers by inducing poor recruitment. The cytotoxic compounds responsible for these effects are short chain polyunsaturated aldehydes (PUAs) and other oxygenated fatty acid degradation products such as hydroxides, oxo-acids, and epoxyalcohols (collectively termed oxylipins) that are cleaved from fatty acid precursors by enzymes activated within seconds after crushing of cells. Such toxins are suggested to have multiple simultaneous functions in that they not only deter herbivore feeding but some also act as allelopathic agents against other phytoplankton cells, thereby affecting the growth of competitors, and also signalling population-level cell death and termination of blooms, with possible consequences for food web structure and community composition. Some oxylipins also play a role in driving marine bacterial community diversity, with neutral, positive or negative interactions depending on the species, thereby shaping the structure of bacterial communities during diatom blooms. Several reviews have already been published on diatom-grazer interactions so this paper does not attempt to provide a comprehensive overview, but rather to consider some of the more recent findings in this field. We also consider the role of diatom oxylipins in mediating physiological and ecological processes in the plankton and the multiple simultaneous functions of these secondary metabolites.

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Section: Laboratory Studies On Diatom-copepod Interactionsmentioning

confidence: 59%

Section: Laboratory Studies On Diatom-copepod Interactionsmentioning

confidence: 95%

Toxigenic effects of diatoms on grazers, phytoplankton and other microbes: a review

2009

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“…typicus (Carotenuto et al . ), which considers it, evidently, a good prey. Hence, some infochemicals are recognized even at a low concentration, when microalgal cells are broken by various grazers, triggering a rapid attraction response in the copepods.…”

Section: Discussionmentioning

confidence: 99%

Centropages typicus(Crustacea, Copepoda) reacts to volatile compounds produced by planktonic algae

et al. 2015

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Volatile organic compounds (VOCs) may play the role of infochemicals and trigger chemotaxis and ecologically relevant responses in freshwater and marine invertebrates. Aquatic grazers use these signals as chemical cues to trace the presence of their food or to detect their predators. However, detailed data are still needed to fully understand the role of these relationships in marine plankton. We investigated the ability of the copepod Centropages typicus to perceive the odour of three planktonic diatoms (Skeletonema marinoi, Pseudonitzschia delicatissima and Chaetoceros affinis) and a dinoflagellate (Prorocentrum minimum). This information is ecologically relevant for orientation, habitat selection, predator avoidance and communication. In addition, as the pH of the medium influences the perception of chemical cues in aquatic environments, we tested the effect of seawater acidification resulting from increasing levels of CO2, and its influences on the olfactory reactions of copepods. For this reason, our tests were repeated in normal (pH 8.10) and acidified (pH 7.76) seawater in order to simulate future ocean acidification scenarios. Using replicated chemokinetic assays we demonstrated that VOCs produced by Ps. delicatissima and Pr. minimum attract copepods at normal pH, but this effect is lowered in acidified water. By contrast, the odour of S. marinoi mainly induces a reaction of repulsion, but in acidified water and at higher concentrations this toxic diatom becomes attractive for copepods. Our experiments demonstrate, for the first time, that copepods are sensitive to the volatile compounds contained in various microalgae; VOCs prompt chemokinesis according to algal species and odour concentrations. However, seawater acidification induces changes in copepods' perception of odours. These findings highlight the sensitivity of chemically mediated interactions to global changes

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“…Such detrimental effects of the microalgae on pelagic calanoid copepods have been attributed to a range of factors, including nutritional deficiencies, toxic secondary metabolites produced by the algae, and particle sizes too large for ingestion (Carotenuto et al, 2002(Carotenuto et al, , 2006. However, whether these pelagic microalgae induce similar negative effects on benthic copepods is largely unknown.…”

Section: Introductionmentioning

confidence: 96%

“…Some pelagic microalgae can reportedly exert various negative effects on pelagic calanoid copepods, such as for Temora stylifera (Dana) and Centropages typicus (Krøyer) including infertility in adults, retarded embryonic development, hatching failure, deformity, and low survival in larvae (Carotenuto et al, 2002(Carotenuto et al, , 2006. Such detrimental effects of the microalgae on pelagic calanoid copepods have been attributed to a range of factors, including nutritional deficiencies, toxic secondary metabolites produced by the algae, and particle sizes too large for ingestion (Carotenuto et al, 2002(Carotenuto et al, , 2006.…”

Section: Introductionmentioning

confidence: 98%

Pelagic microalgae as suitable diets for the benthic harpacticoid copepod Tigriopus japonicus

Wang

Zeng

et al. 2015

Hydrobiologia

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It has been reported that certain microalgae have the ability to cause various negative effects on pelagic calanoid copepods. However, whether such pelagic microalgae have similar negative effects on benthic copepods has had little attention. The results of the present study indicated that both benthic naupliar and copepodite stages of the harpacticoid copepod Tigriopus japonicus could effectively utilize five species of pelagic microalgae to complete their development. The effects of different concentrations of various microalgae species on naupliar survival were significant; however, no significant effects on copepodite survival were detected. When fed with two diatoms Chaetoceros muelleri and Skeletonema costatum as well as the dinoflagellate Prorocentrum micans and the chrysophyte Isochrysis galbana at high concentrations (C8.50 lgC ml -1 ), the survival of both naupliar and copepodite stages of T. japonicus was more than 90%. However, when the diatom Nitzschia closterium f. minutissima was fed at the high concentrations of 8.50 lgC ml -1 , the naupliar survival was 76.3 ± 3.2 %. Interestingly, the negative effects of N. closterium f. minutissima as a diet in the naupliar stage did not affect the survival of the copepodites, which may be explained by increased mobility of copepodites.

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Annual cycle of early developmental stage survival and recruitment in the copepods Temora stylifera and Centropages typicus

Cited by 28 publications

References 53 publications

Toxigenic effects of diatoms on grazers, phytoplankton and other microbes: a review

Toxigenic effects of diatoms on grazers, phytoplankton and other microbes: a review

Centropages typicus(Crustacea, Copepoda) reacts to volatile compounds produced by planktonic algae

Pelagic microalgae as suitable diets for the benthic harpacticoid copepod Tigriopus japonicus

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