Species–specific crab predation on the hydrozoan clinging jellyfish Gonionemus cf. murbachii Mayer, 1901 (Cnidaria, Hydrozoa), subsequent crab mortality, and possible ecological consequences
ثبت نشده
چکیده
منابع مشابه
Species–specific crab predation on the hydrozoan clinging jellyfish Gonionemus sp. (Cnidaria, Hydrozoa), subsequent crab mortality, and possible ecological consequences
Here we report a unique trophic interaction between the cryptogenic and sometimes highly toxic hydrozoan clinging jellyfish Gonionemus sp. and the spider crab Libinia dubia. We assessed species-specific predation on the Gonionemus medusae by crabs found in eelgrass meadows in Massachusetts, USA. The native spider crab species L. dubia consumed Gonionemus medusae, often enthusiastically, but the...
متن کاملMitochondrial diversity in Gonionemus (Trachylina:Hydrozoa) and its implications for understanding the origins of clinging jellyfish in the Northwest Atlantic Ocean
Determining whether a population is introduced or native to a region can be challenging due to inadequate taxonomy, the presence of cryptic lineages, and poor historical documentation. For taxa with resting stages that bloom episodically, determining origin can be especially challenging as an environmentally-triggered abrupt appearance of the taxa may be confused with an anthropogenic introduct...
متن کاملNatural Mortality in Ne Pacific Coastal Hydromedusae: Grazing Predation, Wound Healing and Senescence
Hydromedusae appear in the coastal plankton during defined species-specific periods. In a predictable succession, some species appear shortly after the spring plankton bloom begins, and others follow as ecological conditions continue to change. Most species also have welldefined seasonal terminations. This study explores the programs of mortality in the field other than whole-animal predation o...
متن کاملDiversity, Phylogeny and Expression Patterns of Pou and Six Homeodomain Transcription Factors in Hydrozoan Jellyfish Craspedacusta sowerbyi
Formation of all metazoan bodies is controlled by a group of selector genes including homeobox genes, highly conserved across the entire animal kingdom. The homeobox genes from Pou and Six classes are key members of the regulation cascades determining development of sensory organs, nervous system, gonads and muscles. Besides using common bilaterian models, more attention has recently been targe...
متن کاملMangrove vegetation and community structure of brachyuran crabs as ecological indicators of Pondicherry coast, South east coast of India
Baseline ecological studies of Pondicherry mangroves are important for monitoring, management and conservation of mangrove ecosystems. A brachyuran crab faunal assemblage at four stations of Pondicherry mangroves is described and monthly samplings were made during September 2008 – August 2009. Totally 22 species of brachyuran crabs belonging to 12 genera and 5 families were recorded crabs bel...
متن کامل