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Titolo:
Dynamics of sympatric Paratylenchus nanus and Paratrichodorus minor populations in soil under pasture
Autore:
Bell, NL; Watson, RN;
Indirizzi:
AgRes, Ruakura Res Ctr, Hamilton, New Zealand AgRes Hamilton New Zealand gRes, Ruakura Res Ctr, Hamilton, New Zealand
Titolo Testata:
NEMATOLOGY
, volume: 3, anno: 2001,
parte:, 3
pagine: 267 - 275
SICI:
1388-5545(2001)3:<267:DOSPNA>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEMATODE POPULATIONS; PLANT;
Keywords:
Activity Index; competition; rainfall; seasonal periodicity; temperature; vertical distribution;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Bell, NL AgRes, Ruakura Res Ctr, Private Bag 3123, Hamilton, New Zealand AgRes Private Bag 3123 Hamilton New Zealand milton, New Zealand
Citazione:
N.L. Bell e R.N. Watson, "Dynamics of sympatric Paratylenchus nanus and Paratrichodorus minor populations in soil under pasture", NEMATOLOGY, 3, 2001, pp. 267-275

Abstract

Populations of both Paratrichodorus minor and Paratylenchus nanus in a grazed pasture in Waikato, New Zealand were assessed in single 2.5 em diam. core samples over six successive seasons. Neither seasonal periodicity nor a consistent vertical distribution pattern was observed in the P. minor population. P. nanus had distinct spring and summer population maxima and was more abundant at 0-10 than 10-20 cm depth. P. minor but not P. nanus abundance was significantly correlated with rainfall and an activity index combining rainfall and soil temperature for the week before sampling. Significant correlations among P minor, P. nanus and concentrations of some soil nutrients seemed to reflect soil nutrient interactions with other biotic factors such as plant growth. There was no evidence for competition between these two nematodes. Host root resource, spatial aggregation and differences in morphology that indicate niche differences are discussed as possible reasons for the observed lack of competition.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 08:12:14