1967 0 
Wickham, D. A. (1967) Observations on the activity patterns in juveniles of the pink 
shrimp, Penaeus duorarum. Bull. Mar. Sci. . 17(4):769-86. 
[DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] The daily pattern of locomotor 
and burrowing activity of juveniles of Penaeus duorarum was observed in the 
laboratory under constant conditions of light intensity, water current, and water level. 
A bimodal pattern of nocturnal activity with a period of diurnal burrowing was 
observed near the times of the new and the full moon. A daily progression in the times 
of nocturnal activity peaks was observed which appeared to correspond with the 
normal daily tide progression in the area of capture. The rhythmic pattern in the 
behavior of P. duorarum was persistent, but could be modified by experimentally 
changing light regimes and water levels. This study indicated that activity of pink 
shrimp at any given time in the field is probably a resultant of the interaction of the 
environmental stimuli which are present and the rhythmic patterns of the previously 
experienced stimuli. 
1967 0 
Yokel, B. J., M. A. Roessler and E. S. Iversen (1967) Fishes and juvenile stages of pink 
shrimp ( Penaeus duorarum) collected in Buttonwood Canal, Florida, December 1962 to June 
1965. Data Rep. Serv. No. 22. US Fish and Wildlife Service, Washington, DC. 58 pp. 
[NO COPY OF THE PAPER AVAILABLE.] 
1967 - 1968 
Chuensri, C. (1968) A morphometric and meristic study of postlarval brown shrimp, 
Penaeus aztecus Ives, pink shrimp, Penaeus duorarum Burkenroad, and white shrimp, P. 
setiferus (Linneaus). M. S. Thesis. University of Miami., Coral Gables, FL. 108 pp. 
[DATE OF SAMPLING UNKNOWN OR NOT APPLICABLE.] A morphometric and meristic 
study of postlarval brown shrimp, Penaeus aztecus Ives, pink shrimp, P. duorarum 
Burkenroad, and white shrimp, P. setiferus (Linnaeus) was conducted at the Institute of 
Marine Sciences during 1967 and 1968. The purposes of the study were to develop a 
simple method of distinguishing the three species and to quantitatively analyze the 
various characteristics used. A total of 2,201 collected specimens were examined. 
Collection sites included Buttonwood Canal and Little Shark River in Everglades National 
Park, the Dry Tortugas area near Key West, and Upper Matecumbe in Florida; Barataria 
Bay and Vermilion Bay in Louisiana; Mississippi Sound in Mississippi; Bogue Inlet in 
North Carolina; the North Edisto River and Prince Inlet in South Carolina; and Galveston 
Bay in Texas. Twenty one laboratory reared P. aztecus and 3 laboratory reared P. 
duorarum were also examined. The collected specimens ranged from 2.60 mm in total 
length with 1 dorsal rostral spine to 18.45 mm in total length with 10 dorsal and 2 
ventral rostral spines. The maximum number of dorsal and ventral rostral spines of one 
postlarva was 11 and 3 respectively. A new morphological character, the connection 
between the anterior edge of the carapace at the orbit and the lateral side of the 
rostrum, was used to distinguish postlarval P. setiferus from P. aztecus and P. 
duorarum. In the former species, the connection is described as abrupt, and in the 
latter two species, it is described as gradually closing. All of the P. setiferus and 95% 
of the P. duorarum could be distinguished from P. aztecus by the relationship between 
the carapace length and sixth abdominal segment length at the 95% level of confidence. 
The calculations are as follows: 
Y c = b + m 
X 
o 
188 
