Titlebook: Biology and Conservation of Horseshoe Crabs; John T. Tanacredi,Mark L. Botton,David Smith Book 2009 Springer-Verlag US 2009 Biome.Ecology.

背景

BINGE

使残废

Sperm Attachment on the Egg of Malaysian King Crab, ,similar to the other three horseshoe crab species, ., and . The sperm consists of a head, 4.6 µm, containing the nucleus capped with an acrosomal vesicle, and a long flagellum, 33 µm. The spherical egg (2.25–2.58 mm in diameter) consists of two main parts: yolk and chorion. The chorion is composed o

序曲

Hyperplasia

CARE

用树皮

Distribution of Juvenile Horseshoe Crabs in Subtidal Habitats of Delaware Bay Using a Suction-Dredgeiculties with sampling in this habitat. A suction-dredge was constructed consisting of a “T”-shaped sampling head; an 8-hp trash pump, a 15.2-m-long non-collapsible hose-pipe; and a gunwale-mounted catch-basin to survey newly hatched juvenile horseshoe crabs in shallow subtidal habitats of lower Del

窗帘等

Reproductive Competition and Sexual Selection in Horseshoe Crabs synchronously, only ., the American horseshoe crab, has intense male–male competition (high operational sex ratios and multi-male groups around nesting pairs) and very high female nesting densities. These differences in reproductive competition are reflected in differences between American and Asia

蒸发

Additive

Daniel Ennöckl,Nicolas Raschauerge-scale environmental parameters that limit their global distribution are . (estuarine environments, continental shelves as avenues of distribution, ocean deeps as deterrents), . which sets boundaries, . that define predominant potential spawning sites, and the influence of ..