Records of offspring production for 192 female cockroaches (Blaptica dubia) kept at either 50% or 30% relative humidity for two weeks during gestation. We then kept all females alone at 50% humidity for 10 weeks and counted the number of nymphs each female produced in up to two clutches. Full details about this nonGeographicDataset can be found at https://doi.org/10.5285/5c404d9f-8b66-48a6-8d9d-250dea74d57a

These data are gonad index (gonad mass/total animal mass) and egg size measurements for two Antarctic marine invertebrates, the starfish Odontaster validus and the brittle star Ophionotus victoriae. Data are for samples hand-collected monthly, where weather permits, by scuba divers from sites near the British Antarctic Survey's research station at Rothera Point, Adelaide Island. Samples were first collected in 1997 and have continued for 19 years to 2015.

Data presented are mean biomass values of samples of Aequiyoldia eightsii larvae collected between June and September 1990 using a 100 micron plankton net deployed from a small inflatable boat from Factory Cove, Signy Island, South Orkney Islands. Samples were returned to the laboratory and larvae removed from bulk samples by eye using a Wild M5 field microscope. Numbers in samples were between 8 and 40, but predominantly 15 or 20. Sampling, sorting and later processing was conducted by Jeremy Colman. The data were used to evaluate the development rate and duration of the pelagic larval phase of this sediment dwelling Antarctic bivalve mollusc. Data analyses were conducted in MINITAB. Funding source: The work was fully supported by core funds to the British Antarctic Survey from the Natural Environment Research council, UK