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Titolo:
INCREASING THE AVAILABILITY OF FOOD AND THE REPRODUCTION OF POECILUS-CUPREUS IN A CEREAL FIELD BY STRIP-MANAGEMENT
Autore:
ZANGGER A; LYS JA; NENTWIG W;
Indirizzi:
UNIV BERN,INST ZOOL,BALTZERSTR 3 CH-3012 BERN SWITZERLAND
Titolo Testata:
Entomologia experimentalis et applicata
fascicolo: 2, volume: 71, anno: 1994,
pagine: 111 - 120
SICI:
0013-8703(1994)71:2<111:ITAOFA>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
BENEFICIAL ARTHROPODS; CARABID BEETLES; EGG-PRODUCTION; DENSITY; POPULATIONS; COLEOPTERA; SURVIVAL; AUGMENTATION; LIMITATION; HABITATS;
Keywords:
POECILUS CUPREUS; CARABIDAE; SATIATION; HABITAT-MANAGEMENT; REPRODUCTION; SEX-RATIO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
37
Recensione:
Indirizzi per estratti:
Citazione:
A. Zangger et al., "INCREASING THE AVAILABILITY OF FOOD AND THE REPRODUCTION OF POECILUS-CUPREUS IN A CEREAL FIELD BY STRIP-MANAGEMENT", Entomologia experimentalis et applicata, 71(2), 1994, pp. 111-120

Abstract

In a 8 ha field the availability of food and the reproduction of the most abundant carabid beetle Poecilus cupreus L. (Carabidae, Coleoptera) was compared between a strip-managed area (cereal area subdivided by strips of weeds and wild flowering herbs) and a conventionally treated cereal area. Data on phenology, biometry, quantity of the gut content and egg production were collected during the main reproduction period (April-July). Females were found to be significantly larger and heavier in the strip-managed area than in the control area. The higher weight (corrected for size) indicated better feeding conditions in the strip-managed area, which was confirmed by having better filled crops. The state of egg development and the numbers of eggs in the ovaries indicated a prolongation of the reproduction period in the strip-managedarea, whereas females caught in the cereal area contained significantly fewer ripe eggs. The results of egg-laying tests in the laboratory showed the same trend but did not confirm any significant differences because of a high rate of individual variation. All measurements from females point to a higher availability of food in the strip-managed area and to an enhanced reproductive potential at this site. For males, on the other hand, the results did not reveal such a uniform trend.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 07:53:43