Results 81 to 90 of about 158,404 (231)

Marine Mammals in the Anthropocene: Developing a Systematic Evidence Base of Threats to Nineteen Species

Mammal Review, Volume 56, Issue 1, March 2026.
Marine mammals are vulnerable to a variety of anthropogenic threats, yet a global systematic map of the literature for 19 species found both spatial and temporal disparity in research effort between threats and between species. There are knowledge gaps for species and threats, with effort unequal across many species' ranges.
Emily L. Hague, Rachael R. Sinclair, Joanna L. Kershaw, Davina Derous, Ross M. Culloch, Carol E. Sparling, Nicholas Baker‐Horne, Marija Sciberras, Teresa F. Fernandes, Lauren H. McWhinnie   +9 more
wiley   +1 more source

High Ammonia and Low pH in the Urine of the Ghost Crab, Ocypode quadrata

The Biological Bulletin, 1994
Nitrogen excreted into the urine (100 mM were found in the urine of laboratory-held Ocypode quadrata, suggesting that this notion might not be applicable to all crustaceans. To address this issue, hemolymph and urine were removed from freshly captured O. quadrata and analyzed for nitrogenous catabolites and major ions. Hemolymph composition was similar
De Vries, M C, Wolcott, Donna L., Holliday, C W   +2 more
openaire   +4 more sources

Burrow morphology of the land crab Gecarcinus lateralis and the ghost crab Ocypode quadrata on San Salvador Island, The Bahamas: comparisons and palaeoenvironmental implications

Burrow morphologies of the land crab Gecarcinus lateralis and the ghost crab Ocypode quadrata were investigated on East Beach, San Salvador Island, The Bahamas, with the goals of critical comparison of their morphologies and of clarifying and advancing ...
Seike, Koji, Curran, Allen
core   +1 more source

Ghost Crab Foraging on Waties Island

, 2000
The ghost crab, Ocypode quadrata, is a common animal found on many beaches. They prey on mole crabs and coquina clams found in the swash zone. The purpose of this study is to determine whether ghost crabs are foraging optimally, getting their highest ...
Carsey, Maegan A.
core  

Variation in the body growth parameters of the ghost crab Ocypode quadrata from morphodynamically distinct sandy beaches

Brazilian Journal of Oceanography
Investigations of patterns of distribution of sandy beach macrofauna show that dissipative beaches tend to concentrate higher richness and biomass at the intertidal zone, as well as better fitness and larger sizes of a species, than reflective beaches ...
Maíra Pombo, Alexander Turra
doaj   +1 more source

The Twilight Activity of the Ghost Crab, Ocypode quadrata on Waties Island, S.C.

, 1997
Early literature on the ghost crab, Ocypode quadrata, established that it was a nocturnal scavenger. However, studies conducted in the late 1970\u27s and early 1980\u27s show that the ghost crab fulfills a variety of ecological roles during the day and ...
Peaslee, Jason
core  

Comparing random forests and convoluted neural networks for mapping ghost crab burrows using imagery from an unmanned aerial vehicle

, 2019
Sandy beaches are important ecosystems that line a third of the world's ice-free coastlines. Unfortunately, these environments and the life they support are often threatened by various anthropogenic and natural factors.
Leon, Javier X, Schoeman, David, Leon, Javier X., Schoeman, D S, Bycroft, Rachel   +4 more
core   +1 more source

Study of some morphometric traits, condition factor and growth parameters of the ghost crab Ocypode rotundata Miers, 1882 in Qeshm Island, Persian Gulf [PDF]

بوم‌شناسی آبزیان, 2018
In this study, sexual dimorphism and growth traits of Ocypode rotundata were investigated. 736 individuals were collected in Qeshm Island, eastern Persian Gulf, from February 2015 to January 2016.
Mojtaba Naderi, Seyed Abbas Hosseini, Seyed AliiAkbar Hedayati, Jamileh Pazooki, Mariano Lastra   +4 more
doaj  

Spatial distribution of the ghost crab Ocypode quadrata in low-energy tide-dominated sandy beaches

, 2005
Turra, A., Gonçalves, M. A. O., Denadai, M. R. (2005): Spatial distribution of the ghost crab Ocypode quadrata in low-energy tide-dominated sandy beaches.
Turra, A., Gonçalves, M. A. O., Denadai, M. R.   +2 more
core   +1 more source

Larval development of Ghost Crab Ocypode ceratophthalma (Pallas) under laboratory conditions [PDF]

, 2005
In the semi-terrestrial crab family Ocypodidae, the ghost crab Ocypade cerataphtha/ma (Pallas) represents the sandy shore ecosystem. Of the eleven species of the genus Ocypade recorded from Indo-West Pacific region (Serene, 1968), the ghost crab O ...
Kakati, V S
core