摘要:

By means of a morphometric study, worker bees coming from three localities (Ponte Nizza, Ruino and Voghera) in the Oltrepo pavese (Northern Italy) were compared with specimens ofApis mellifera ligusticaSpinola, from the apiary of the ‘Istituto Nazionale di Apicoltura’ of Bologna, situated in Reggio Emilia. The specimens, taken from three colonies in each locality, were measured for five characteristics (length of lower labrum, cubital index of fore-wing, width of yellow strip on tergite 2, width of tomentum band on tergite 4 and length of hairs on tergite 5): the values obtained were submitted to discriminant multivariate analysis.

ISSN:0394-9370    

DOI:10.1080/03949370.1994.10721982

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

The work illustrates the techniques that have been described to date concerning the modes of nesting in Attelabidae. From a synthesis of these behavioural characteristics, a reliable evolutionary framework is developed and used to generate a more natural systematic re-organisation of the family.

ISSN:0394-9370    

DOI:10.1080/03949370.1994.10721983

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

The larval morphology ofGraphipterus serratorrecently described, has been considered from a morphofunctional point of view and as an adaptation to a myrmecophilous life style in arid environments. Since the morphologies vary conspicuously from the first to the third instar, a behavioural pattern is hypothesized for the first, the second and the third instar that allows to each instar to survive inside the ant colonies.

ISSN:0394-9370    

DOI:10.1080/03949370.1994.10721984

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

In November 1991 numerous specimens of the wood-boring isopodSphaeroma terebranswere collected from mangrove forests along the coast of Kenya. The presence of burrows occupied by an adult female or by a couple and several young (1 to 26) was noted. The frequency of these “family burrows” is scarce, only 5% of all inhabited burrows. The dimensions of males and females in the “family burrows” are larger than those living alone. In some of the “family burrows” a mixed brood was present.

ISSN:0394-9370    

DOI:10.1080/03949370.1994.10721985

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

For 2 consecutive years, some observations on gregarious sleeping in the solitary beeAmegilla(s. str.)garrula(Rossi) (Hymenoptera Anthophoridae Anthophorini) were conducted in the Province of Pavia (Northern Italy). During the summer of 1991 a few data were collected concerning size, composition and seasonal dynamics of the sleeping aggregation observed; these data are compared with other available findings on some species ofAmegillaandAnthophora.Furthermore, notes on the behaviour ofA. garrulafrom the assembly flights in the evening until the dispersion flights in the morning are given, and its sleeping posture is described and illustrated.

ISSN:0394-9370    

DOI:10.1080/03949370.1994.10721986

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

Heteromysis harpax(Mysidacea) is an obligate commensal, which lives in pairs inside the shells of various species of tropicalDardanushermit crabs. Preliminary observations with transparent glass shells were carried out in the laboratory in Kenya.Heteromysis harpaxprobably employs both visual and chemical cues to identify suitable shells for habitation. The mysids were not attracted to shells occupied by hermits of a different genus (Calcinus). Usually, the mysids occupy the hindmost portion of the shell, but they will sometimes crawl and swim as far as the shell mouth. Inside the shell, the two partners do not live apart and usually can be found close to each other. Food consists of suspended particles and plankton. The mysids do not appear to perform active cleaning behaviour nor to be faecal feeders. They can easily follow the hermit when it changes shell and also avoid expulsion when the hermit moults.

ISSN:0394-9370    

DOI:10.1080/03949370.1994.10721987

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor