Prevalence of bacteria in the spermathecae of female snow crab, Chionoecetes opilio (Brachyura : Majidae)

Citation
K. Benhalima et M. Moriyasu, Prevalence of bacteria in the spermathecae of female snow crab, Chionoecetes opilio (Brachyura : Majidae), HYDROBIOL, 449(1-3), 2001, pp. 261-266
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Aquatic Sciences
Journal title
HYDROBIOLOGIA
ISSN journal
0018-8158 → ACNP
Volume
449
Issue
1-3
Year of publication
2001
Pages
261 - 266
Database
ISI
SICI code
0018-8158(200104)449:1-3<261:POBITS>2.0.ZU;2-G
Abstract
The spermathecal contents of primiparous, multiparous and barren female sno w crabs were observed by a scanning electron microscope. Bacteria colonies were observed with a significantly higher frequency in the spermathecae of primiparous and old barren females. Bacteria infect the spermathecae and de stroy the spermatophores and spermatozoa inside. These observations suggest that bacteria in the spermathecae do not exclude opportunistic microbes by modifying pH of the medium as suggested in the literature. The prevalence of bacteria in primiparous and old barren females suggests that they infect individuals with a weak anti-microbial protection. The absence of bacteria in the highly acidic seminal fluid derived from males upon copulation sugg ests that it may provide anti-microbial protection. Bacteria do not seem to be able to survive in an anaerobic environment for a long period.