TOWARDS THE MUMMIFIED OSTRACODA (ARTHROPODA, CRUSTACEA) FOSSILS IN UKRAINE

The History of Sexual Dimorphism in Ostracoda (Arthropoda, Crustacea) Since the Palaeozoic

[19] Tsukagoshi A. Chapter 2: Geobiological history perused by researches for Ostracoda. In: Katakura H., Mawatari S. (eds.) Diversity of Organisms, Organism Science in the 21thCentury Series 2. Tokyo: Baifukan; 2007, p. 37–70. (in Japanese)[20] Athersuch J., Horne DJ., Whittaker JE. Marine and brackish water ostracods. Synopsisof the British Fauna (New Series) 43. Leiden: EJ. B...

Arthropods: Crustacea – Ostracoda and Amphpoda

Cryptic Species in Putative Ancient Asexual Darwinulids (Crustacea, Ostracoda)

BACKGROUND Fully asexually reproducing taxa lack outcrossing. Hence, the classic Biological Species Concept cannot be applied. METHODOLOGY/PRINCIPAL FINDINGS We used DNA sequences from the mitochondrial COI gene and the nuclear ITS2 region to check species boundaries according to the evolutionary genetic (EG) species concept in five morphospecies in the putative ancient asexual ostracod gener...

Living males of the 'ancient asexual' Darwinulidae (Ostracoda: Crustacea).

Three living male darwinulid ostracods of a new species of the genus Vestalenula have been found in Yakushima, Japan. This is the first report of living darwinulid males for over 100 years and their morphology casts doubt on the two previous records from the late 1800' s. The presence of male darwinulids also calls into question the hypothesis that the family Darwinulidae is an exclusively anci...

Chemoreceptors and feeding in calanoid copepods (Arthropoda: Crustacea).

Ultrastructural studies of the mouthparts of the calanoid copepod Diaptomus pallidus have revealed the presence of numerous chemoreceptors, and the apparent absence of mechanoreceptors. The setae contain no muscles, and the setules are noncellular extensions of their chitin wall. This allows a new insight into the selective feeding of zooplankters.