摘要:

Linear dimensions and weight of barn owl pellets collected at a hay‐loft and at a roost‐site were examined. Pellets ejected in the hayloft during nocturnal hunting activity were significantly smaller and lighter than those ejected at the roost‐site during resting periods in daylight hours. This observation is in agreement with the “pelote diurne et pelote nocturne” theory suggested by Guerin (1932). Linear dimensions and weight of pellets varied from one to another season. Thus, it was suggested that the feeding tactics exhibited by barn owls may affect the content and the linear dimensions and weight of pellets; moreover, it was pointed out that further studies are necessary on pellet characteristics in habitats where barn owl faces spatial and temporal variations in the availability of its most important food resources.

ISSN:1125-0003    

DOI:10.1080/11250009609356124

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

A newEuplotesmorphospecies,E. margherensisnov. spec, belonging to the group of species characterized by a dorsal silverline system of the ≪double≫ type and a set of 10 frontoventral cirri, is described. It was isolated from a sample collected in a central area of the Lagoon of Venice. It is of small dimensions, about 50 × 40 μm, and is endowed with a small projection on the right ventral front and with an indented margin which bounds the right side of the adoral zone of membranelles.

ISSN:1125-0003    

DOI:10.1080/11250009609356125

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Petrosia pulitzerin. sp. (Demospongiae, Petrosiidae) is described from three specimens collected from totally submerged marine caves from the Island of Crete and the Gulf of Naples. They are massive or encrusting, white or yellowish in conditions of reduced light, and stony hard in consistency. They show a skeleton formed by stout tracts of closely packed spicules (mostly strongyles) with a peripheral mesh condensation. The new species is close toPetrosia ficiformis, but shows spicular and skeletal differences.

ISSN:1125-0003    

DOI:10.1080/11250009609356126

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Forty‐one species (25 Macrodasyida and 16 Chaetonotida) are reported from the coasts of Sicily. Among the Chaetonotida,Chaetonotussp. 3 Valbonesi & Luporini, 1987 is redescribed and redrawn from specimens collected from sublittoral sediments of Giardini Naxos (Taormina), and is namedChaetonotus luporinii.

ISSN:1125-0003    

DOI:10.1080/11250009609356127

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Changes in size and shape in the skull of five species of the African rodent genusArvicanthiswere studied using Geometric Morphometrics, in an attempt to evaluate their systematics and taxonomy which is still confused. Four species endemic to the Horn of Africa (Aabyssinicus, A. dembeensis, A. blickiandA. somalicus)and a population of the’A. niloticus’complex from West Africa (Benin) were investigated. These species are widespread with ranges at very different altitudes, from arid grasslands up to the alpine moorlands at 4300 m a.s.l., and represent one of the major pests in croplands. Size and shape differences between species were compared with phylogeny (deduced from karyotype rearrangements), time of divergence (allozymes) and altitude. Morphometric divergence does not reflect any cladogenetic sequence and neither any association with altitude, but rather adaptive patterns that are unique to each species.

ISSN:1125-0003    

DOI:10.1080/11250009609356128

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

During fieldwork carried out in January‐February 1995 in the Strict Nature Reserve No. 9 ≪Tsingy de Bemaraha≫ (western Madagascar), a new species of dwarf chameleon (genusBrookesia)was discovered on the western slopes of the Antsingy forest. The inaccessible habitat of this new taxon consists of dense subhumid tropophile forest growing among the limestone blocks belonging to the huge karstic complex of the ≪Tsingy de Bemaraha≫ Massif, whereBrookesia exarmatasp. nov. is sympatric withBrookesia perar‐mata, a taxon likely endemic to the Antsingy forest, andBrookesia brygooi. The new taxon, formally described in this paper, is a small‐sized chameleon whose total adult length ranges between 30 and 45 millimetres: this feature, together with the absence of a pelvic shield and the presence of a series of dorsolateral tubercles (or a few small dorsolateral spines), leads toBrookesia exarmatabeing ascribed to theBrookesia minimagroup.Brookesia tuberculataandBrookesia peyrierasiare ressurrected from the synonymy ofBrookesia minimaand a new identification key to these and to the other three species included in theBrookesia minimagroup is proposed.

ISSN:1125-0003    

DOI:10.1080/11250009609356129

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

ISSN:1125-0003    

DOI:10.1080/11250009609356130

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

ISSN:1125-0003    

DOI:10.1080/11250009609356132

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

ISSN:1125-0003    

DOI:10.1080/11250009609356113

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor