Izvorni znanstveni članak
https://doi.org/10.48188/so.5.4
Some biological and morphological aspects of Eriphia verrucosa (Forskål, 1775) in the eastern Adriatic Sea
Pave Kuzmanić
; University of Split, University Department of Marine Studies, Split, Croatia
Vedrana Nerlović
; University of Split, University Department of Marine Studies, Split, Croatia
*
* Autor za dopisivanje.
Sažetak
Aim: To investigate and describe the length-weight relationship and sex ratio of the species Eriphia verrucosa in the eastern Adriatic and to determine whether there is external dimorphism by morphometric analysis of the body.
Methods: All samples were collected in the coastal area in the intertidal zone of Kaštela Bay (Split-Dalmatia County, Croatia). The sample catching was done at night after 10 p.m. with a hand net and an LED headlamp; afterwards, each specimen was weighed, prepared for further processing and frozen. The processing of each specimen included sex determination and detailed morphometric measurements. In females, a total of eight morphometric measures were measured and additionally the length of the gonopods in males. For each morphometric measure except gonopod length (GL), the average value and the corresponding 95% confidence interval were determined.
Results: A total of 73 individual specimens of E. verrucose were sampled, of which 35 were males and 38 were females. The gender ratio was 0.92:1 in favor of females (P = 0.726). The largest body weight measured during this research was a male with a mass of 263.6 g, and the smallest was also a male with a weight of 7.3 g. The largest number of individuals belonged to the length class of 45–50 mm. Sexual dimorphism between males and females was recorded for all morphometric measures. According to the b coefficient of length-weight yield, the growth of E. verrucosa can be characterized as negatively allometric.
Conclusions: In this research, the biological characteristics of the species E. verrucosa in the eastern Adriatic were analyzed. The length-weight ratio (CL-W) for the total sample was W = 0.0076 × CL2.5086, for males W = 0.0078 × CL2.5116 and for females W = 0.0169 × CL2.2911. Based on the length-weight ratio, sex ratio and the morphometric analysis of the body, sexual dimorphism is documented, which was not previously found for the warty crab in that area.
Ključne riječi
Crustacea; Decapoda; Eriphia verrucosa; morphometry; dimorphism; Adriatic Sea
Hrčak ID:
317567
URI
Datum izdavanja:
31.5.2024.
Posjeta: 55 *