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Structure and early development of an Opisthobranch mollusc, <i>Caloria militaris</i> (Alder and Hancock)

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Title Structure and early development of an Opisthobranch mollusc, Caloria militaris (Alder and Hancock)
 
Creator Rao, K. Virabhadra
Kumari, L. Krishn.
 
Description 32-37
The external and internal morphology, the spawn and early development of C. militaris, obtained locally, have been described. It is a facilinid having elongated oral tentacles, smooth rhinophores, tentacular anterior angles of the foot and clusters of cerata each with a varying number of oblique rows. The presence of oral and salivary glands, paired jaw plates with cutting edges, uniseriate radula with teeth having a prominent pointed median cusp and seven lateral cusps on each side, and a cleioproctic anus opening at about the middle in the second cluster of cerata on the right side are the main features of the alimentary system. The mollusc feeds on the hydroid, Garvia franciscana (Torrey). The nervous, circulatory and renal systems are typically eolidacean in character. The statocysts have each, numerous statoliths. An enlarged convoluted gonoduct into a seminal ampulla, a distinctly separate lobed prostrate gland proximally connected to the vas deferens and an unarmed conical penis are prominent among the reproductive organs. The mucoabuminous glands, the vaginal duct and the spermatheca are normal in character as in most nudibranchs. The spawn string is a flat spiral with two rather irregular linear series of eggs and its attachment to substratum leaves gaps where the string forms loops remaining free. The veliger larva is blind when hatched and the shell is smooth on the surface, spirally ovate and bears an operculum.
 
Date 2017-01-04T05:36:22Z
2017-01-04T05:36:22Z
1973-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/39632
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.02(1) [June 1973]