. The Biological bulletin. Biology; Zoology; Marine biology. INTERSEXUALITY IN CHERAX Table I Frequency and morphometric description of sexual types in a 7-month-old population o/Cherax quadricarinatus 17 Sample size Body weight Carapace length Propodus length Red patch length Type Total no. harvested («) (g) (ram) (mm) (mra) Male 531 50 ±'' ± 48,1 ± » ± in = 46) Female 514 50 ± ; ± ± ; â Intersex 13 13 ± ; ± ± ; ± (n = 12) Values are means ± SD. Values sharing the same
. The Biological bulletin. Biology; Zoology; Marine biology. INTERSEXUALITY IN CHERAX Table I Frequency and morphometric description of sexual types in a 7-month-old population o/Cherax quadricarinatus 17 Sample size Body weight Carapace length Propodus length Red patch length Type Total no. harvested («) (g) (ram) (mm) (mra) Male 531 50 ±'' ± 48,1 ± » ± in = 46) Female 514 50 ± ; ± ± ; â Intersex 13 13 ± ; ± ± ; ± (n = 12) Values are means ± SD. Values sharing the same superscript letters are not significantly different. of intersex crayfish nor the possibility of sequential her- maphroditism has been fully addressed. To shed more light (from a diSerent angle) on the de- velopment of maleness and femaleness in decapod crus- taceans, we examined intersex individuals from a cultured population of C. quadricarinatus to determine the status of their reproductive system and the presence of andro- genic glands. Morphological, anatomical, and biochemical characteristics were compared among male, female, and intersex crayfish. For the study of possible sequential sex changes, some intersex individuals were grown in the lab- oratory to 19 months of age. Materials and Methods Animals Juvenile crayfish (C quadricarinatus) were hatched at the Department of Aquaculture, Agricultural Research Organization, Bet-Dagan, Israel. At an average age of 1 month and a weight of g, the juveniles were E E SO 20 â male pro ⢠feni pro * isx pro. 6379*car f pro = +*car ipro = +*car 35 40 45 Carapace length (iniii) 50 Figure 1. Regression line for propodus length vs. carapace length in 7-month-old intersex, male, and female Cherax Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectb, booksubjectzoology
