There are abundant reports of symbiosis wherein crustaceans live inside or on mollusks; however, there few published records gastropods hosting decapods. This study examines the biological association between fifteen snails (124.86 ± 19.01) from species Pacific crown conch Melongena patula and porcelain crab Euceramus transversilineatus. Morphometric relationships both invertebrates, as well so...

An exceptionally preserved new ostracod crustacean from the Silurian of Herefordshire, England, preserves eggs and possible juveniles within its carapace, providing an unequivocal and unique view of parental brood care in the invertebrate fossil record. The female fossil is assigned to a new family and superfamily of myodocopids based on its soft-part anatomy. It demonstrates a remarkably conse...

Sustainability is one of the essential issues in utilizing lobster coastal waters Ayah, Kebumen Regency. Its management requires information on growth parameters and utilization status lobster. This study examines ornate spiny (Panulirus ornatus) Ayah’s water. The was conducted from November 2020 to January 2021. Lobster were analyzed by distribution frequency carapace length using ELEFAN I met...

Abstract Assessing size at maturity for European lobster Homarus gammarus across the North East Atlantic remains a fundamental knowledge gap this commercially valuable fishery. This study first time collates existing data on physiological of female H. Atlantic, including new from Scotland, Wales, and Isle Man. Physiological estimates were undertaken using 1309 lobsters 11 locations standardized...

Growth is a priority trait from the point of view of genetic improvement. Molecular markers linked to quantitative trait loci (QTL) have been regarded as useful for marker-assisted selection (MAS) in complex traits as growth. Using an intermediate F2 cross of slow and fast growth parents, a genetic linkage map of Pacific whiteleg shrimp, Litopenaeusvannamei, based on amplified fragment length p...

The scalloped spiny lobster Panulirus homarus supports numerous traditional diving, trap and trammel net fisheries in the Western Indian Ocean. Commercial catches made in 2003 to 2005 in the Arabian Sea region of Oman (a coastline of ~1100 km, comprising Dhofar and Al-Wusta) were sampled for length and sex composition, and female reproductive condition. On average, lobsters caught in Dhofar wer...

A new trigonotarbid (Arachnida: Trigonotarbida: Trigonotarbidae) is described as Archaeomartus roessleri n. sp. from the Upper Carboniferous (Pennsylvanian; Namurian B, higher Marsdenian) of Hagen-Vorhalle, Germany. Originally assigned to Trigonotarbus johnsoni Pocock, 1911, our new fossil has a distinctly lobed carapace and thus resembles more closely the Early Devonian species Archaeomartus l...

Multiple populations of Hadrurus pinteri from Baja California Sur, Mexico have been examined. It is demonstrated that the southern populations of this species have a larger number of accessory trichobothria (neobothriotaxy) than the northern populations, numbers exceeding the maximum currently recorded for the genus. Examination of carapace and chela coloration and its patterns show a close aff...