Studies on the morphometry of Macrobrachium nobilii (Decapoda, Palaemonidae)

Abstract

Fourteen morphometric characters of Macrobrachium nobilii (Henderson and Matthai, 1910), a freshwater prawn were measured from 72 males and 66 females collected at random in field. The growth constant (b) of total length and weight for male (4.28) and female (3.02) differed significantly (P<0.05). Comparison of slopes and elevations of regressions between sexes indicated significant difference in all the studied dependent parameters with carapace length (X), except with carapace width (Y). In males, major and minor chelipeds showed positive allometry while in females the growth was isometric.

Morphometric variation among male populations of freshwater shrimp Macrobrachium vollenhovenii Herklots, 1851 from Côte d’Ivoire Rivers

“…Specimens with missing or regenerating limbs were excluded. In the present study, the carapace length (CL) was used as a reference dimension because it was the easiest, fastest and most reliable length measurement to obtain (Grandjean et al, 1997;Mariappan and Balasundaram, 2004).…”

MORPHOLOGICAL VARIABILITY OF SEVERAL INDONESIAN POPULATIONS OF GIANT FRESHWATER PRAWN, Macrobrachium rosenbergii

“…Morphological characters, selected on the basis of inter-individual consistency and easy measurement, including 10 morphometric and 2 meristic traits (Table 1) were determined following description given by Lindenfelser (1984) and Mariappan & Balasundaram (2004). The traits included were rostrum length (ROSTRUM) and rostrum serration both on the dorsal (DORSER) and the ventral side (VENSER), carapace length and width (CARALENGTH and CARAWIDTH); length and maximum width of the abdomen (ABDLEN and ABDWID); length of the first pereiopod and that of its propodus (FSTLEG and PROP); length and maximum width of the telson (TELLEN) and (TELWID); and length of the antennal scale (ANTSCALE).…”

Biometric analysis of lacustrine and riverine populations of Palemonetes antennarius (H. Milne-Edwards, 1837) (Crustacea, Decapoda, Palaemonidae) from north-western Greece

“…Although Kapiris and Thessalou-Legaki (2001) found the rostrum variability to be correlated to sex, maturity and size, Burukovsky (1972) reported that several shrimp species show strong rostral variability regarding different types of habitats. On the other hand, morphometric characters, such as the height of the abdominal somites, have been related to sex, due to special formations of the caridean female pleon for reproductive purposes (Schram 1996;Mariappan and Balasundaram 2004).…”