Head dimorphism and burrowing speed in the African caecilian Schistometopum thomense (Amphibia: Gymnophiona)

被引:1
作者
Teodecki, EE
Brodie, ED
Formanowicz, DR
Nussbaum, RA
机构
[1] Univ Texas, Dept Biol, Arlington, TX 76019 USA
[2] Utah State Univ, Dept Biol, Logan, UT 84322 USA
[3] Univ Michigan, Museum Zool, Ann Arbor, MI 48109 USA
[4] Univ Michigan, Dept Biol, Ann Arbor, MI 48109 USA
关键词
Gymnophiona; Caecilian; Schistometopum; sexual dimorphism; burrowing; aggression; communication;
D O I
暂无
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
We examined the sexually dimorphic head morphology of Schistometopum thomense, a West African species of caecilian. Morphometric data were correlated with experimentally determined burrowing speeds for each sex to determine the relationship between morphology and. burrowing proficiency. Males had larger heads and slower burrowing speeds. Field-collected individuals of this species bear marks indicative of biting. We examined the frequency, location, and nature of bite marks on a series of field-collected, preserved specimens of S. thomense. Bite marks occurred on the head region more frequently than expected. We discuss hypotheses regarding the potential functions of biting.
引用
收藏
页码:154 / 160
页数:7
相关论文
共 25 条
[1]  
[Anonymous], 1981, Statistical Tables
[2]   Social interactions in two sympatric salamanders: Effectiveness of a highly aggressive strategy [J].
Anthony, CD ;
Wicknick, JA ;
Jaeger, RG .
BEHAVIOUR, 1997, 134 :71-88
[3]  
Arnold S.J., 1977, P141
[4]  
Arnold S. J., 1982, Biochemical Aspects of Evolutionary Biology, P173
[5]  
BADENHORST A, 1978, Annale Universiteit van Stellenbosch Serie A II (Soologie), V1, P1
[6]   MORPHOLOGY AND FUNCTION OF THE FEEDING APPARATUS IN DERMOPHIS-MEXICANUS (AMPHIBIA, GYMNOPHIONA) [J].
BEMIS, WE ;
SCHWENK, K ;
WAKE, MH .
ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, 1983, 77 (01) :75-96
[7]   TENTACLE DEVELOPMENT IN DERMOPHIS-MEXICANUS (AMPHIBIA, GYMNOPHIONA) WITH AN HYPOTHESIS OF TENTACLE ORIGIN [J].
BILLO, R ;
WAKE, MH .
JOURNAL OF MORPHOLOGY, 1987, 192 (02) :101-111
[8]  
BILLO R, 1986, MEM SOC ZOOL FR, V43, P71
[9]   PREDATOR AVOIDANCE AND ANTIPREDATOR MECHANISMS - DISTINCT PATHWAYS TO SURVIVAL [J].
BRODIE, ED ;
FORMANOWICZ, DR ;
BRODIE, ED .
ETHOLOGY ECOLOGY & EVOLUTION, 1991, 3 (01) :73-77
[10]  
BROWN CW, 1968, COPEIA, P728