We slide-mounted antenna, male pleopods
one and two, and male peraeopod seven in glycerin for microscopic examination.
The laboratory protocols were the same as those of Vazzoler (1996); eggs were removed from pleopods
by dissociation in 10% NaClO, and were then vigorous stirred.
exopod proximal circumplumose seta arises from an outer process that is perhaps a rudiment of the first exopod article, as seen in some members of Apseudomorpha, Neotanaidomorpha (Lang 1968), and even in plesiomorphic taxa of Tanaidomorpha (Fig.
Low pleopodal egg counts in female crayfish may be caused by damaged females that have lost eggs, females that have not completed extruding eggs, or failure of eggs to be fertilized or adhere to pleopods
In spiny lobsters of the family Palinuridae, female maturation is usually deduced from "berried" (ovigerous) condition (Groeneveld and Melville-Smith, 1994), the presence of external morphological indicators such as changes in the number of pleopod
setae (Gregory and Labisky, 1981; Montgomery, 1992), relative lengths of abdominal and thoracic segments (Jayakody, 1989), or proportional lengths of segments of walking or egg-bearing appendages at the pubertal molt (George and Morgan, 1979; Grey, 1979; Juinio, 1987; Plaut, 1993; Evans et al.
The form of the male pleopod
in this specimen was essentially the same as that seen in specimens in Zimmerman's collection from several other sites.
The central projection diverges from the mesial process and the central projection length to total length of pleopod
(mean = 44.
Individuals in the female phase (FP) were recognized by the absence of MP pleopod
characteristics and the presence of vitellogenic ovaries or broods of embryos, and especially by characters of the "breeding dress" (Hoglund, 1943; Bauer, 2004).
Young and adult crabs were sorted according to the examination of secondary sexual characters, such as pleopod
morphology, free abdomen and distinct cheliped development in adult male crabs as compared to young male and convex abdomen (forming an incubator chamber) in adult females.
The length and height of the propodus of the largest cheliped, the length of the merus of the second walking leg, and the length of the primary pleopod
of each male crab in Cockburn Sound and Shark Bay were measured to the nearest 0.
As shown in other studies, female crab size was a strong predictor of egg-carrying capacity, which was strongly related to pleopod
size and hence egg-carrying capacity.
Crabs were sexed using abdomen and pleopod
Eggs were then carefully teased off pleopod
setae with jeweler's forceps and stored after being wrapped in cool, damp paper towels to minimize evaporative weight loss.
The steroids were injected in the abdominal muscle, in proximity to the fifth pleopod
, two times a week for 4 weeks.
6G, 11I): Adult-like; pleopod
developed; thorax completely covered by carapace; last five thoracic sternal plates with 2, 2, 0, 1, 1 spines.