English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The reproductive characteristics of two estuarine crabs, Chasmagnathus convexus and Helice tridens, which coexist in the Shigenobu River Estuary, Shikoku Island, Japan, were examined on the basis of data collected between April 2001 and March 2002. Seasonal changes in the female gonadosomatic index and occurrence of ovigerous females showed that females of C. convexus spawned mainly from December to March and those of H. tridens spawned from April to July. The mean egg clutch size of C. convexus and H. tridens was 41,600 and 42,500 eggs, respectively (not significantly different) but the mean egg diameter of C. convexus (0.46 mm) was significantly larger than that of H. tridens (0.36 mm). The mean annual fecundity is higher in H. tridens because it produces more egg clutches per year.

plankton and benthos research/plankton and benthos research

Reproductive characteristics of two estuarine crabs Chasmagnathus convexus and Helice tridens (Brachyura: Varunidae) in the Shigenobu River Estuary, Japan