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Titolo:
Social and population structure of a gleaning bat, Plecotus auritus
Autore:
Entwistle, AC; Racey, PA; Speakman, JR;
Indirizzi:
Univ Aberdeen, Dept Zool, Aberdeen AB24 2TZ, Scotland Univ Aberdeen Aberdeen Scotland AB24 2TZ ol, Aberdeen AB24 2TZ, Scotland
Titolo Testata:
JOURNAL OF ZOOLOGY
, volume: 252, anno: 2000,
parte:, 1
pagine: 11 - 17
SICI:
0952-8369(200009)252:<11:SAPSOA>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
LONG-EARED BATS; PIPISTRELLUS-PIPISTRELLUS; GENETIC-STRUCTURE; MATING SYSTEMS; VESPERTILIONIDAE; CHIROPTERA; SELECTION; BEHAVIOR; FOREST; SUMMER;
Keywords:
Chiroptera; social structure; metapopulation; wing morphology; philopatry;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Entwistle, AC Fauna & FLora Int, Great Eastern House,Tenison Rd, CambridgeCB1 2DT, England Fauna & FLora Int Great Eastern House,Tenison Rd Cambridge England CB1 2DT
Citazione:
A.C. Entwistle et al., "Social and population structure of a gleaning bat, Plecotus auritus", J ZOOL, 252, 2000, pp. 11-17

Abstract

Brown long-eared bats Plecotus auritus occupying 30 summer roosts in north-east Scotland were studied over 15 years. During this time 1365 bats were ringed, and a further 720 recaptures were made. Individual bats showed a high degree of roost fidelity, returning to one main roost site; < 1% of recaptured bats had moved among roost sites, and all recorded movements (n = 5)were < 300 m. Adults of both sexes were loyal to the roost sites at which they were first captured, indicating long-term use of roosts. At least somejuveniles (n = 32) of both sexes returned to the natal roost. Mark-recapture estimates indicated that colonies of this species were substantially larger (c. 30-50 individuals) than assumed in previous studies. Plecotus auritus differs from most other temperate zone, vespertilionid species in that there was no evidence of sexual segregation during summer, with males present in all colonies throughout the period of occupancy. Population structure in summer seems to be consistent with a metapopulation model, with discretesub-populations showing minimal interchange. The group size, colony composition and population structure described in this species may be associated with the wing shape (particularly aspect ratio) and foraging behaviour of P. auritus. It is postulated that relative motility, linked to wing structure, may affect the distribution of individuals, and may have implications for the genetic structure of this species. Correlations between aspect ratio and both colony size and migratory behaviour, across British bat species, indicate that wing shape could be an important factor contributing to patterns of social behaviour and genetic structuring in bats.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 16/07/20 alle ore 18:39:28