Author: Claudio DiBaccoPublisher:
ISBN:
Category :
Languages : en
Pages : 442
Book Description
Bay-ocean Exchange of Crab Larvae
Author: Claudio DiBaccoThe Natural History of the Crustacea
Author: Klaus AngerPublisher: Oxford University Press
ISBN: 0190648961
Category : Science
Languages : en
Pages : 432
Book Description
This is the seventh volume of a ten-volume series on The Natural History of the Crustacea. Chapters in this volume synthesize our current understanding of early crustacean development from the egg through the embryonic and larval phase. The first part of this book focuses on the elemental aspects of crustacean embryonic development. The second part of the book provides an account of the larval phase of crustaceans and describes processes that influence the development from hatching to an adult-like juvenile. The third and final part of the book explores ecological interactions during the planktonic phase and how crustacean larvae manage to find food, navigate the dynamic water column, and avoid predators in a medium that offers few refuges.
Bay-Ocean Exchange Processes: Development and Application of a Meroplankton Tracer Technique
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Further advancement in understanding the dynamics of larval exchange between estuarine and coastal marine benthic invertebrate populations requires: (1) knowing the origins of field-sampled larvae, and (2) synoptic assessments of horizontal and vertical larval distribution patterns over large areas for extended periods. Larval concentration and water velocity data were sampled concurrently and used to estimate larval flux rates between regions of San Diego Bay (SDB) and nearshore coastal waters in southern California. Simulations with a 2-D hydrodynamic model of SDB indicated widely differing larval transport probabilities depending on whether tidal vertical migration behavior occurs in the water column. Field studies indicate that crab (Pachygrapsus crassipes) zoeae migrate vertically in SDB, a behavior that promotes transport out of the Bay. In contrast, larvae of other crab species (Lophopanopeus spp.), which do not migrate vertically, are retained within SDB during development. An elemental larval fingerprinting technique (based on Cu, Zn, Al, Mn, and Sr) was developed to distinguish SDB from non-SDB spawned P. crassipes zoeae. With this method, bi-directional larval exchange was observed between SDB and coastal waters. Approximately 26% of P. crassipes larvae observed at the SDB entrance, and 5% at a mid-bay site, originated outside the Bay. This exchange is likely to have significant consequences for larval populations. Laboratory experiments revealed reduced survivorship in larvae spawned from or reared in SDB water relative to pristine coastal waters. Combined use of trace elemental fingerprinting and synoptic field methods can facilitate understanding of larval transport and ultimately population dynamics of coastal species.
The Natural History of the Crustacea
Author: Klaus AngerPublisher: Oxford University Press, USA
ISBN: 0190648953
Category : Science
Languages : en
Pages : 489
Book Description
This is the seventh volume of a ten-volume series on The Natural History of the Crustacea. Chapters in this volume synthesize our current understanding of early crustacean development from the egg through the embryonic and larval phase. The first part of this book focuses on the elemental aspects of crustacean embryonic development. The second part of the book provides an account of the larval phase of crustaceans and describes processes that influence the development from hatching to an adult-like juvenile. The third and final part of the book explores ecological interactions during the planktonic phase and how crustacean larvae manage to find food, navigate the dynamic water column, and avoid predators in a medium that offers few refuges.
Advances in Marine Biology
Author: Publisher: Academic Press
ISBN: 0080524508
Category : Science
Languages : en
Pages : 341
Book Description
This new volume of Advances in Marine Biology contains reviews on a wide range of important subjects such as: long-term oceanographic and ecological research in the western English Channel; marine biofouling on fish farms and its remediation; interactions between behaviour and physical forcing in the control of horizontal transport of decapod crustacean larvae; comparison of marine copepod outfluxes: nature, rate, fate and role in the carbon and nitrogen cycles. Advances in Marine Biology has been providing in-depth and up-to-date reviews on all aspects of Marine Biology since 1963 -- over 40 years of outstanding coverage! The series is well-known for both its excellence of reviews as well as the strength of its thematic volumes devoted to a particular field in detail, such as 'The Biochemical Ecology of Marine Fishes' and 'Molluscan Radiation'. Radiation'. - Series Encompasses 40 Years of Coverage - Up-to-date Reviews on Wide-Ranging Topics
Distribution and Abundance of Larvae of King Crab, Paralithodes Camtschatica, and Pandalid Shrimp in the Kachemak Bay Area, Alaska, 1972 and 1976
Author: Evan B. HaynesPublisher:
ISBN:
Category : Crabs
Languages : en
Pages : 548
Book Description
Bulletin
Author: Effects of Ocean Acidification on Development of Alaskan Crab Larvae
Author: Raphaelle DescoteauxPublisher:
ISBN:
Category : Crabs
Languages : en
Pages : 116
Book Description
The oceans absorb a large proportion of the carbon dioxide gas (CO2) emitted into the atmosphere. This CO2 changes the chemistry of seawater to make it more acidic, a phenomenon termed ocean acidification. Ocean acidification can have negative impacts on marine fauna, especially during early life stages, presenting a risk to ecosystems and fisheries. This research tested the effects of ocean acidification on the larval development of three crab species in Alaska: Tanner crab (Chionoecetes bairdi), rock crab (Glebocarcinus oregonensis), and Dungeness crab (Metacarcinus magister). Experiments were undertaken to assess the effects of exposure to low-pH conditions (decrease of up to 0.6 pH units from current levels, range of pH ~8.1 to 7.5) on survival, growth (morphometrics and mass), and carapace mineral composition of larval Tanner, rock, and Dungeness crabs. Results showed a decrease in survival as well as a small but nonsignificant decrease in size of Tanner crabs. There was a small and complex effect of pH on survival of Dungeness crabs. Rock crabs raised in low-pH conditions (pH 7.5) had higher individual biomass than those raised in ambient conditions (pH 8.1). There was no significant impact of pH on mineralization of any species. Therefore, low pH had a negative effect on development of Tanner crabs, a small effect on Dungeness larval survival and no discernible negative effect on rock crab larvae. Differences in response to ocean acidification may be related to pre-adaptation to variable pH conditions through lifestyle such that species that live in deeper, more stable waters (e.g., Tanner crab) are more vulnerable than species living in shallower, more variable waters (e.g., rock and Dungeness crabs). These observations suggest that ocean acidification will have negative impacts on Tanner and Dungeness crab larval survival with potential implications for recruitment to the adult population and consequently, for their fisheries.
Explorations
Author: Relative Seasonal Abundance and Distribution of Crab Larvae in San Francisco Bay, California, May, 1978-April, 1979
Author: Timothy Eugene ArehartPublisher:
ISBN:
Category : Crabs
Languages : en
Pages : 144
Book Description