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OPAC HELP

Titolo:
A laboratory study of the effect of non-phytoplankton diets on the reproduction of Calanus helgolandicus
Autore:
Kang, HK; Poulet, S; Lacoste, A; Kang, YJ;
Indirizzi:
CNRS, Stn Biol Roscoff, F-29682 Roscoff, France CNRS Roscoff France F-29682 S, Stn Biol Roscoff, F-29682 Roscoff, France Univ Paris 06, F-29682 Roscoff, France Univ Paris 06 Roscoff France F-29682 v Paris 06, F-29682 Roscoff, France Pukyong Natl Univ, Dept Marine Biol, Pusan 608737, South Korea Pukyong Natl Univ Pusan South Korea 608737 ol, Pusan 608737, South Korea
Titolo Testata:
JOURNAL OF PLANKTON RESEARCH
fascicolo: 11, volume: 22, anno: 2000,
pagine: 2171 - 2179
SICI:
0142-7873(200011)22:11<2171:ALSOTE>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLANKTONIC COPEPODS; LARVAL DEVELOPMENT; EGG-PRODUCTION; ST-LAWRENCE; OMNIVORY; VIABILITY; FOOD; INVERTEBRATES; FERTILIZATION; ECHINODERMATA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
43
Recensione:
Indirizzi per estratti:
Indirizzo: Poulet, S CNRS, Stn Biol Roscoff, F-29682 Roscoff, France CNRS Roscoff France F-29682 l Roscoff, F-29682 Roscoff, France
Citazione:
H.K. Kang et al., "A laboratory study of the effect of non-phytoplankton diets on the reproduction of Calanus helgolandicus", J PLANK RES, 22(11), 2000, pp. 2171-2179

Abstract

The effect of five non-phytoplankton and one phytoplankton diets on reproduction is described for the copepod Calanus helgolandicus and compared to field fecundity estimates. A fecundity increase followed ingestion of larvaeof the sea urchin Sphaerechinus granularis (LSU) and the oyster Crassostrea gigas (OYS) by copepod females, whereas a decrease followed ingestion of eggs of the copepods Acartia and Temora spp. (COP), as a function of protein concentration in diets. With larvae of the sea urchin Paracentrotus lividus (SSU) and the dinoflagellate Prorocentrum minimum (PM; standard phytoplankton diet), fecundity was identical. Although protein concentrations differed greatly from one food treatment to the other, mean fecundity values were rather low. For unknown reasons, and despite their very high protein concentrations in comparison to in situ, none of these diets could improve female fecundity or reach maximum egg production rates reported in C.helgolandicus. Hatching rates were >80%, stable and similar with both PM and COP diets. With SSU, LSU and OYS diets, egg viability was lower than in situ and with PM, showing a strong and mild decrease with time with LSU and SSU, respectively. Ingestion of zygotes of the brown alga Fucus spiralis (ZYG) led tothe death of females. These results suggest that dense blooms of zygotes of macroalgae and invertebrate embryos and larvae, occurring in the continental shelf as part of copepod diets, could have different effects on the demographic response of C.helgolandicus.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 00:22:27