Natura Montenegrina No 3, 2004
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Natura Montenegrina No 3, 2004 |
Dragana
CVETKOVIĆ1), Nataša TOMAŠEVIĆ2),
Ivan
ALEKSIĆ2), Jelka CRNOBRNJA-ISAILOVIĆ2)
ASSESSING
THE PATTERNS OF INTERSEXUAL DIFFERENCE IN BODY SIZE PARAMETERS AND AGE
STRUCTURE: DATA FROM THE COMMON TOAD BUFO
BUFO
Numerous
studies have underlined the complex nature of relationship among age, size and
reproductive traits in anurans. For testing various hypotheses on sexual size
difference (SSD) between the sexes and different life-history strategies, more
data is needed from the variety of species and geographical ranges. In addition,
numerous problems arise concerning accurate estimations of age structure in
particular species, as well as intersexual size differences (e.g. comparability
of data and choice of traits used as indicators of body size). Here, we analyse
these problems with respect to results and experiences from our study on
populations of common toad (Bufo bufo)
from the vicinity of Belgrade.
Keywords:
sexual size dimorphism, age structure,
skeletochronology, Bufo bufo
Brojne
studije istakle su složenu prirodu odnosa između starosti, veličine
tela i reproduktivnih osobina kod bezrepih vodozemaca. Za testiranje hipoteza
koje se tiču razlike u veličini tela među polovima (SSD) i različitih
strategija životne istorije, neophodno je sakupiti podatke o većem broju
vrsta i sa različitih geografskih područja. Takođe, postoji niz
problema vezanih za tačnu procenu uzrasne strukture kod određene vrste,
kao i za procenu razlika u veličini tela među polovima (npr.
komparabilnost podataka i izbor osobina koje se koriste kao indikatori veličine
tela). U ovom radu, analiziramo te probleme s obzirom na naša iskustva i
rezultate proučavanja populacija obične krastače (Bufo
bufo) iz okoline Beograda.
Ključne reči: razlike među polovime,
veličina tela, starosna struktura, skeletohronologija, Bufo bufo.
____________________
1)
Institute of Zoology, Faculty of Biology, Belgrade, Serbia & Montenegro,
e-mail: dragana@bf.bio.bg.ac.yu
2) Department of Evolutionary Biology, Institute for Biological Research, Belgrade, Serbia & Montenegro