MORFOMETRI DAN ALOMETRI KEPITING BIOLA UCA PERPLEXA YANG TERDAPAT PADA VEGETASI MANGROVE DI PULAU BAAI, BENGKULU
Abstract: The study of
mophology, morphometry and alometry of Uca perplexa, one of fiddler crabs that
dominated at mangrove vegetation in Pulau Baii of Bengkulu have been conducted.
We measured morphometric characters including body weight and sizes of
carapace, abdomen, chelae, frontal, eyebrow and eye stalk. The result showed
Uca perplexa live at sandy mud substrate and made burrow around mangrove roots.
Uca perplexa have back carapace with some horizontal white strips. Carapace was
acute and straight at anteriolateral part and rounded at dorsolateral. Their
foot color usually brown although some of them were grey, were also found. The
male (2.4±0.96 g) has higher of body weight than female (0.77±0.23 g) caused by
dimorphism of chelae in male. Carapace width of male and female were 14.74±4.42
mm and 10.42±3.24 mm, respectively. As for abdomen width of male was 5.16±1.61
mm and of female was 6.58±1.38 mm. The length of major chelae was 44.66±9.22 mm
as minor chelae was 10.50±0.49 mm. The frontal length of male was 3.44± 0.44 mm
as for female was 2.83±0.69 mm. The eyebrows were narrow with eye stalks length
for male and female were 6.50±2.46 and 4.20±0.92, respectively. Alometric analysis
showed that Uca perplexa either male or female has growth pattern with negative
alometry (b<3). It suggest the increase of body weight in Uca perplexa is
slower than the increase of size of its carapace, abdomen and chelae.
Penulis: Rusdi Hasan
Kode Jurnal: jpbiologidd140209
