Nassarius Gibbosulus (Linné 1758 : Buccinum)

Towards a better management of Nassarius mutabilis (Linnaeus, 1758): biometric and biological integrative study

Carl von Linné

translation, four of the most important as lengthy appendices. More than 1200 pages are occupied by 28 Excursuses which discuss the evolution of our knowledge of a particular organ or structure-the heart, the brain, the alimentary canal, and so on. The writings of precursors, contemporaries, and followers have been scrutinized for every possible relevant fact or idea. There are over 2000 printe...

Monitoring of the endangered Pinna nobilis Linné, 1758 in the Mar Grande of Taranto (Ionian Sea, Italy).

The present study aimed to improve the knowledge of the bivalve Pinna nobilis L. population distribution in Mar Grande of Taranto (Ionian Sea). Although historical references report the local abundant presence of this endangered species, there is a lack of updated information about its exact distribution. For this purpose, a visual census of P. nobilis was performed by SCUBA diving in the Mar G...

Sexual stages of the female portion in the scallop Nodipecten nodosus (Linné, 1758) and astaxanthin quantity in each stage.

This work describes the gametogenic cycle of the scallop Nodipecten nodosus kept in a culture system. To this end, during one year, samples were taken from the broodstocks every 30 days to be submitted to macroscopic and microscopic analyses and to measure the amount of astaxanthin. To perform the microscopic evaluation, 5 micro slices from the median portion of the female part of the gonad wer...

The Escape of Veligers from the Egg Capsules of Nassarius Obsoletus and Nassarius Trivittatus (gastropoda, Prosobranchia).

1. The loosening of the egg capsule plug prior to escape of the veligers is shown to be chemically mediated in Nassarius obsoletus and N. trivittatus. 2. The hatching substance is not produced continuously during development, but rather in a short pulse beginning just prior to hatching and ending within 4 hours of escaping from the capsule, for N. obsoletus. 3. The hatching substance produced b...