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Structural complexity and vertical zonation of intertidal crabs, with focus on habitat requirements of the invasive asian shore crab, Hemigrapsus sanguineus (de Haan)
Home and Away: Comparisons of Resource Utilization by a Marine Species in Native and Invaded Habitats
The exotic Asian shore crab, Hemigrapsus sanguineus, was recently introduced to the northeastern coast of North America and during the 1990's breeding populations were established throughout southern New England, and climatological and physical similarities between native and invaded regions likely contributed to the successful invasion of H. sanguinus into rocky intertidal habitats in southern New Massachusetts.
Petrologic investigations of the 1995 and 1996 eruptions of Ruapehu volcano, New Zealand: formation of discrete and small magma pockets and their intermittent discharge
Abstract Ruapehu volcano erupted intermittently between September and November 1995, and June and July 1996, producing juvenile andesitic scoria and bombs. The volcanic activity was characterized by…
Mixed Magmas, Mush Chambers and Eruption Triggers: Evidence from Zoned Clinopyroxene Phenocrysts in Andesitic Scoria from the 1995 Eruptions of Ruapehu Volcano, New Zealand
Juvenile ejecta from the September and October 1995 eruptions of mush network. Hence, eroded crystals from the mush were captured Ruapehu volcano, New Zealand, indicate that mixing occurred by the…
CHIMNEY BUILDING IN THE FIDDLER CRAB UCA ARCUATA
It is experimentally demonstrated that individuals without burrows more often entered burrows without chimneys than burrows with chimneys, and the seasonal variation in chimney construction as well as differences in the probability of construction among various sex and size classes also support this conclusion.
MOLECULAR PHYLOGENY OF GRAPSOID AND OCYPODOID CRABS WITH SPECIAL REFERENCE TO THE GENERA METAPLAX AND MACROPHTHALMUS
A molecular phylogenetic analysis suggests that the behavioral and morphological similarities observed between Metaplax and Macrophthalmus species are probably due to convergent evolution, despite a close phylogenetic relationship.
Genetic and behavioral diversity in the Macrophthalmusjaponicus species complex (Crustacea: Brachyura: Ocypodidae)
Although the genetic divergence among these populations was at a level similar to those observed among other intraspecific crustacean populations, the overall differences suggest that Korean and Japanese M. banzai represent a complex of two species or subspecies.
Synchronous waving in two species of fiddler crabs
- P. Backwell, M. Jennions, K. Wada, M. Murai, J. Christy
- Environmental Scienceacta ethologica
- 1 February 2006
It is shown that in both species waving is closely synchronised between neighbouring males in clusters, both in the presence of mate-searching females and in their absence, which may be the result of a precedence effect causing male competition to produce leading signals.
GROWTH, BREEDING, AND RECRUITMENT IN SCOPIMERA GLOBOSA AND ILYOPLAX PUSILLUS (CRUSTACEA : OCYPODIDAE) IN THE ESTUARY OF WAKA RIVER, MIDDLE JAPAN
- K. Wada
- Environmental Science
- 30 March 1981
Field studies were conducted on the growth, breeding cycle and recruitment of the two ocypodid crabs Scopimera globosa De Haan and Ilyoplax pusillus de Haan, in the estuary of Waka River, suggesting that S. globosa has a slightly shorter longevity and a slightly earlier maturation than I. pusillus.
Resource utilization for decorating in three intertidal majid crabs (Brachyura: Majidae)
Comparisons between materials used for decoration and gut contents revealed that T. cornigera and M. platipes used algal species differently for decorating and feeding, while P. Quadridens quadridens used the same algalspecies for both decoratingand feeding.