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"Crustaceans"
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Next time you see a pill bug
\"Chances are that just under a nearby rock, you'll spot a roly-poly pill bug. Encourage a child to take a close look, and introduce a fascinating creature. Gently pick it up and watch as it rolls into a ball and unrolls to take a walk. This cousin to lobsters and crabs sheds its crusty skin and will tickle your hand with its 14 (count 'em!) wiggly legs. The book will inspire elementary-age children to experience the enchantment of everyday phenomena such as pill bugs\"-- Provided by publisher.
Book
Giant isopods and other crafty crustaceans
This book briefy examines the world and behaviors of isopods and crustaceans.
Book
Diet of the Invasive Atlantic Blue Crab Callinectes sapidus Rathbun, 1896 (Decapoda, Portunidae) in the Guadalquivir Estuary (Spain)
The Atlantic blue crab Callinectes sapidus (Decapoda, Portunidae) Rathbun, 1896 is native to the east coasts of North and South America and has recently expanded its distribution in the non-native range into the Gulf of Cadiz (SW Iberian Peninsula, Europe). Considering the impacts caused by this invasive species in numerous estuarine ecosystems and its generalist feeding behavior, this study aims to provide the first account of the Atlantic blue crab diet on the East Atlantic coast. We studied the species’ feeding habits using stomach content analyses to predict food web interactions and putative impacts. Samples were obtained in the Guadalquivir estuary (SW Spain, Europe), which was colonized in 2017. The main food items identified on their stomach were, fish (49.9%), mollusks (44.4%) and crabs (32.3%). They also consumed plant material (27.2%), and the sediment (32.3%) in their digestive tract was likely the result of secondary ingestion. The Atlantic blue crab exhibited the same omnivorous behavior as in the native area. There was no sexual variation in diet composition or feeding activity in general, but there was a seasonal variation in the diet composition of females. The decrease of the caramote prawn Penaeus kerathurus (Forskål 1775) observed in the Guadalquivir estuary since 2021 is likely not due to the Atlantic blue crab because they seldomly eat this prey. Overall, our study provides clear baseline information to expand the knowledge about the ecological roles of the Atlantic blue crab in non-native ecosystems.
Journal Article
Why do lobsters eat each other? : and other odd crustacean adaptations
\"There are few behavioral adaptations that seem more odd to us than cannibalism. Scientists have noticed the rising incidence of lobster cannibals in recent years, and the reason may be connected to global warming. Readers will find the odd information about these and other crustaceans to be a fascinating study in animal adaptations, a crucial component of the elementary science curriculum.\"-- From publisher's description.
Book
Medicinal herbs and phytochemicals to combat pathogens in aquaculture
The global production of aquaculture has grown rapidly and is dominated by China, Vietnam, and other East Asian countries. The use of antibiotics is widespread in the aquaculture industry but has been slowly decreasing as the benefits of medicinal herbs become clear. Various medicinal herbs are known to have excellent properties, such as antiviral, antibacterial, and antifungal activity; hormonal balancing; and physiological support (immune and digestive systems). The aim of this paper is to review the latest scientific information on the application of medicinal herbs in different aquaculture sectors, including marine, freshwater and crustacean culture, and the potential problems and recommendations for the application of medicinal herbs in aquaculture, to provide clues for the development of medicinal herbs for epidemic disease resistance of aquaculture industry in the future.
Journal Article
Hank's big day : the story of a bug
Hank is a pill bug whose daily routine involves nibbling a dead leaf, climbing up a long stick, avoiding a skateboarder, and playing pretend with his best friend, a human girl named Amelia.
Book
Tracking movements of decapod crustaceans
Decapod crustaceans are ecologically and economically important invertebrates but are vulnerable to anthropogenic pressures and climate change. Understanding their spatial ecology is essential for their management and conservation, with telemetry emerging as a useful tool to quantify space-use and movements. Here, we synthesized the use of telemetry to study decapods among articles published from 1971 to 2019 (n = 102 studies), by taxonomic group of the study species, study location, objectives, number of animals tagged and their tag recovery rate, types (and trends) of telemetry used, and IUCN conservation status. These studies revealed insight into the behaviours and roles of decapods across habitats and geographic regions. The most common study species were crayfish and lobsters (41 %, Astacidea), and these studies also had the highest number of individuals tagged per study (mean = 149 individuals). Most studies (86 %) were conducted in the northern hemisphere. Acoustic tags were the most commonly used equipment (66 % of studies) and were first employed in 1971, followed by radio-telemetry (mid-1990s), passive integrated transponders (mid-2000s), and data storage tags (late 2000s). Almost half (48 %) of studies focused on species that had a conservation status of Least Concern, perhaps reflecting an applied science focus on animals of commercial interest rather than conservation importance. The positive allometric relationship between body length and movement rate (exponent = 0.86) demonstrates the type of broader ecological insight that combining these studies can provide. Tracking decapod movements will likely become increasingly important for managing fisheries, protecting sensitive species, and understanding invasion biology.
Journal Article
Correction: Assessing the effects of a 660 nm diode laser on crustacean eyes
[This corrects the article DOI: 10.1371/journal.pone.0317706.].
Journal Article
Emerging Diseases and Epizootics in Crabs Under Cultivation
While most crab production for human consumption worldwide comes from capture fisheries, there is increasing production of selected species using aquaculture-based methods. This is both for the purpose of stock replacement and direct yield for human consumption. Disease has limited the ability to produce larval crabs in commercial hatcheries and this together with suitable feeds, are major hurdles in the sustainable development of cultivation methods. Juvenile and adult crabs are also subject to a range of diseases that can cause severe economic loss. Emerging pathogens/parasites are of major importance to crab aquaculture as they can cause high levels of mortality and are difficult to control. Diseases caused by viruses and bacteria receive considerable attention but the dinoflagellate parasites, Hematodinium spp., also warrant concern because of their wide host range and lack of control methods to limit their spread. This concise review examines the emerging diseases in several crabs that have been selected as candidates for aquaculture efforts including Chinese mitten crabs ( Eriocheir sinensis ), mud crabs ( Scylla spp.), swimming crabs ( Portunus spp.), blue crabs ( Callinectes sapidus ) and shore crabs ( Carcinus maenas ). The latter is also a prolific invasive species known to harbour diverse macro- and micro-parasites that can affect commercially important bivalves and crustaceans.
Journal Article