EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

On the fine structure of spermatozoa of tachypleus gigas xiphosura merostomata


International Journal of Invertebrate Reproduction & Development 9(3): 309-320
On the fine structure of spermatozoa of tachypleus gigas xiphosura merostomata
Among the Arthropoda the Xiphosura are the only group whose spermatozoa resemble the so-called 'primitive type', although even here there are some differences. The spermatozoa of Tachypleus consist of a sperm head, a middle piece, and a long flagellum. Though principally quite similar to the spermatozoa of Limulus polyphemus some characteristics are noticeably different: the axonemal pattern (9 .times. 2 + 0), the shape of the acrosomal vacuole, the different position of the acrosomal filament, and the distribution of mitochondria throughout the cytoplasm. In contrast to what is known from Limulus the nuclear envelope is apparently dissolved over wide areas. Consequences for the interpretation of the acrosomal reaction are discussed. Structural conditions are compared with those in other Chelicerata.


Accession: 006027185

DOI: 10.1080/01688170.1986.10510207



Related references

Comparative assessment of two breeding populations of crabs Tachypleus gigas (Muller) (Merostomata: Xiphosura). Environment and Ecology (Kalyani): 91: 163-166, 1991

Morphometric characteristics in the horseshoe crab Tachypleus gigas (Arthropoda: Merostomata). Indian Journal of Marine Sciences 29(4): 333-335, 2000

Studies on indian king crabs tachypleus gigas carcinoscorpius rotundicauda xiphosura. Proceedings of the Indian National Science Academy Part B Biological Sciences 38(3-4): (1974) 206-211, 1972

A study of the fine structure of the accessory muscle of the horseshoe crab, Tachypleus gigas. Journal Morph47(4): 439-458, 1976

Horse-shoe crabs (Chelicerata: Merostomata) occurring along the south-east coasts of Bangladesh Carcinoscorpius rotundicauda, Tachypleus gigas, ecolocy, morphology, taxonomy. Bangladesh journal of zoology 8(1): 5-13, 1980

Some observations on the breeding biology, and on the swelling, weight, water-content and embryonic movements in the developing eggs, of the Moluccan King-crab, Tachypleus gigas (Muller) (Arthropoda, Xiphosura). Proceedings of the Indian Academy of Sciences, 20 B4: 115-129, 1944

Fine structure of the spermatozoa of Crassostrea gigas. Molecular Reproduction & Development 34(2): 206-211, 1993

Population structure of Tachypleus tridentatus (Chelicerata: Merostomata) at a nursery beach in Puerto Princesa City, Palawan, Philippines. Journal of Natural History 39(25): 2319-2329, 2005

Fine structure of the spermatozoa of Crassostrea gigas (Mollusca, Bivalvia). Molecular Reproduction and Development 34(2): 206-211, 1993

Unit 11, Merostomata Xiphosura, Eurypterida.. 1939