REPRODUCTIVE CYCLE AND RECRUITMENT PERIOD OF OCYPODE QUADRATA (DECAPODA, OCYPODIDAE) AT A SANDY BEACH IN SOUTHEASTERN BRAZIL [PDF]
Abstract The reproductive cycle and recruitment period of a ghost crab population from Ubatuba, Sao Paulo, Brazil were investigated by means of examining the developmental stages of gonads of breeding crabs and the ingress of young recruits to the studied population.
Negreiros-Fransozo, M. L. +2 more
openaire +2 more sources
Distribuição de Ocypode quadrata (Fabricius, 1787) em praias arenosas do nordeste do Brasil [PDF]
The abundance, distribution and morphometry of Ocypode quadrata (Fabricius, 1787) burrows were analyzed in twelve sandy beaches of Pernambuco (NE- Brazil; 7º51’- 8º45’30” S; 34º49’ 35º06’ W), with different grades of anthropic impact.
Souza, José +3 more
core +1 more source
Skeletal muscle fiber types in the ghost crab,Ocypode quadrata:implications for running performance [PDF]
SUMMARYGhost crabs possess rapid running capabilities, which make them good candidates for comparing invertebrate exercise physiology with that of more extensively studied vertebrates. While a number of studies have examined various aspects of running physiology and biomechanics in terrestrial crabs,none to date have defined the basic skeletal muscle ...
Michael J, Perry +4 more
openaire +2 more sources
Controle natural de Achatina fulica (Mollusca, Gastropoda) por Ocypode quadrata (Crustacea, Decapoda) em restinga antropizada de Ilhéus, Bahia, Brasil [PDF]
The aim of this study was to evaluate the predationof the introduced African snail Achatina fulica by the native crab Ocypode quadrata, both of them are common organismsin the anthropogenic sea shore vegetation of the northern littoral at Ilhéus ...
Delabie, Jacques Hubert Charles +1 more
core +1 more source
Reed Parrotbill nest predation by tidal mudflat crabs: Evidence for an ecological trap?
Understanding the relationships between nesting habitat quality and predation risk is essential for developing appropriate conservation management for threatened species. This is particularly relevant where anthropogenic pressures could decouple the environmental cues used by birds to assess nesting habitat quality from increased predation risk.
Donglai Li +6 more
wiley +1 more source
Distribuição de ocypode quadrata (fabricius, 1787) em praias arenosas do nordeste do Brasil [PDF]
A distribuição, abundância e morfometria das tocas de Ocypode quadrata foram analisados em doze praias arenosas de Pernambuco (NE-BR – 7º51’- 8º45’30” S; 34º49’ 35º06’ O), com diferentes níveis de impacto ambiental.
Bonifácio, Paulo Henrique de Oliveira +3 more
core +1 more source
Distribución espacial de los macroinvertebrados de playas arenosas de Cuba oriental
El objetivo del presente trabajo es realizar un inventario de los macroinvertebrados bentónicos y describir su estructura espacial en 15 playas de la costa oriental de Cuba.
Frank A. Ocaña +5 more
doaj
The domestic cat Felis silvestris catus is considered a potential threat to the native fauna of regions it populates, particularly when it has free access to these areas. Although this problem is known in Brazil, little is known regarding the effects of this species on natural areas.
Giovanne Ambrosio Ferreira +2 more
wiley +1 more source
FIGURE 3. A: General view of spermatozoa within the seminal receptacles of Ocypode quadrata. Scale bar: 100 µm. Stained with PAS. B. Detail of the spermatozoa within the matrix. Scale bar: 20 µm. Stained with Toluidine blue.
López-Greco, Laura S. +3 more
core +1 more source
Comparative morphology of the seminal receptacles of Ocypode quadrata (Fabricius, 1787) (Brachyura, Ocypodoidea) [PDF]
The seminal receptacles of the Eubrachyura are an ecto-mesodermic differentiation of the genital ducts where the spermatophores are stored and fertilization takes place. The position in which the oviduct is connected to the seminal receptacles varies among species and two types, dorsal and ventral, can be distinguished.
Lopez-Greco, Laura S. +3 more
openaire +1 more source

