title: Impact of the diatom-derived polyunsaturated aldehyde 2-trans,4-trans decadienal on the feeding, survivorship and reproductive success of the calanoid copepod Temora stylifera.
abstract: Many diatoms, a major class of unicellular algae contributing to over 45% of oceanic primary production, are known to induce deleterious effects on reproductive processes in crustacean copepods. This is mainly due to the production of teratogenic oxylipins, including polyunsaturated aldehydes (PUAs). Here we tested the direct effect of the PUA 2E,4E-decadienal (DD) on feeding activity, survivorship and reproductive success of the calanoid copepod Temora stylifera. DD-inoculated cultures induced high mortality at concentrations above 3 μg mL(-1) compared to controls in both males and females, with males having a higher mortality. Low DD concentrations triggered an increase in female filtration and ingestion rates. Egg production rates and hatching times were also higher in the presence of DD, whereas egg hatching success decreased with increasing DD concentration. Our study shows, for the first time, that the presence of diatom PUAs may increase feeding rates in copepods.
authors.affiliation: Institute of Marine Biology, National Taiwan Ocean University, Keelung 202, Taiwan. Electronic address: sambasahelien@gmail.com.
authors.forename: Samba
authors.initials: S
authors.lastname: Kâ
authors.affiliation: Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy. Electronic address: Ylenia.Carotenuto@szn.it.
authors.forename: Ylenia
authors.initials: Y
authors.lastname: Carotenuto
authors.affiliation: Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy. Electronic address: Giovanna.Romano@szn.it.
authors.forename: Giovanna
authors.initials: G
authors.lastname: Romano
authors.affiliation: Institute of Marine Biology, National Taiwan Ocean University, Keelung 202, Taiwan. Electronic address: Jiang-Shiou.Hwang@ntou.edu.tw.
authors.forename: Jiang-Shiou
authors.initials: JS
authors.lastname: Hwang
authors.affiliation: Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy; Italian National Institute for Environmental Protection and Research, Piazzale dei marmi, 12, 57128 Livorno, Italy. Electronic address: Isabella.Buttino@szn.it.
authors.forename: Isabella
authors.initials: I
authors.lastname: Buttino
authors.affiliation: Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy. Electronic address: adrianna.ianora@szn.it.
authors.forename: Adrianna
authors.initials: A
authors.lastname: Ianora
mesh_terms: D000447:Aldehydes / Q000378:metabolism / Q000494:pharmacology*; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D033342:Copepoda / Q000187:drug effects*; D017377:Diatoms / Q000378:metabolism*; D004435:Eating / Q000187:drug effects; D005260:Female; D008297:Male; D009812:Odorants; D012098:Reproduction / Q000187:drug effects
chemical_list: D000447:Aldehydes; C057349:2,4-decadienal
keywords: Apoptosis; Copepod; Diatom polyunsaturated aldehydes; Feeding; Inhibition; Mortality