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Articles 241 - 270 of 280

Full-Text Articles in Marine Biology

A Sea Change For Aquatic Sustainability : Meeting The Challenge Of Fish Resources Management And Aquatic Sustainability In The 21st Century, Department Of Fisheries Jun 2010

A Sea Change For Aquatic Sustainability : Meeting The Challenge Of Fish Resources Management And Aquatic Sustainability In The 21st Century, Department Of Fisheries

Fisheries Occasional Publications

No abstract provided.


The Loss Of Species: Mangrove Extinction Risk And Geographic Areas Of Global Concern, Beth A. Polidoro, Kent E. Carpenter, Lorna Collins, Norman C. Duke, Aaron M. Ellison, Joanna C. Ellison, Elizabeth J. Farnsworth, Edwino S. Fernando, Kandasamy Kathiresan, Nico E. Koedam, Suzanne R. Livingstone, Toyohiko Miyagi, Gregg E. Moore, Vien Ngoc Nam, Jin Eong Ong, Jurgenne H. Primavera, Serverino G. Salmo, Jonnell C. Sanciango, Sukristijono Sukardjo, Yamin Wang, Jean Wan Hong Yong Apr 2010

The Loss Of Species: Mangrove Extinction Risk And Geographic Areas Of Global Concern, Beth A. Polidoro, Kent E. Carpenter, Lorna Collins, Norman C. Duke, Aaron M. Ellison, Joanna C. Ellison, Elizabeth J. Farnsworth, Edwino S. Fernando, Kandasamy Kathiresan, Nico E. Koedam, Suzanne R. Livingstone, Toyohiko Miyagi, Gregg E. Moore, Vien Ngoc Nam, Jin Eong Ong, Jurgenne H. Primavera, Serverino G. Salmo, Jonnell C. Sanciango, Sukristijono Sukardjo, Yamin Wang, Jean Wan Hong Yong

Biological Sciences Faculty Publications

Mangrove species are uniquely adapted to tropical and subtropical coasts, and although relatively low in number of species, mangrove forests provide at least US $1.6 billion each year in ecosystem services and support coastal livelihoods worldwide. Globally, mangrove areas are declining rapidly as they are cleared for coastal development and aquaculture and logged for timber and fuel production. Little is known about the effects of mangrove area loss on individual mangrove species and local or regional populations. To address this gap, species-specific information on global distribution, population status, life history traits, and major threats were compiled for each of the …


Fishing Industry Impact Study : James Price Point Proposed Liquefied Natural Gas Precinct, Department Of Fisheries Feb 2010

Fishing Industry Impact Study : James Price Point Proposed Liquefied Natural Gas Precinct, Department Of Fisheries

Fisheries Occasional Publications

No abstract provided.


Adsorption Of Lead (Ii) By A Non-Living Algal Biomass., Mudher A Hussein Jan 2010

Adsorption Of Lead (Ii) By A Non-Living Algal Biomass., Mudher A Hussein

Student Works (2010-2019)

Conventional techniques for removing dissolved heavy metals are only practical and cost-effective when applied to high strength wastes with heavy metal ion concentrations greater than 100 ppm. The possibility of using a non-living algal biomass to solve this problem was studied. Lead(II) was used in this study because it has been reported to cause several disorders in human. The non-living algal biomass was obtained from the filamentous green alga Spirogyra neglecta. The effects of initial concentration and contact time, pH, and temperature on the adsorption of lead(II) by the non-living algal biomass were studied. The equilibrium isotherms and kinetics were …


Biodiversity Assessment Of The Fishes Of Saba Bank Atoll, Netherlands Antilles, Jeffrey T. Williams, Kent E. Carpenter, James L. Van Tassell, Paul Hoetjes, Wes Toller, Peter Etnoyer, Michael Smith Jan 2010

Biodiversity Assessment Of The Fishes Of Saba Bank Atoll, Netherlands Antilles, Jeffrey T. Williams, Kent E. Carpenter, James L. Van Tassell, Paul Hoetjes, Wes Toller, Peter Etnoyer, Michael Smith

Biological Sciences Faculty Publications

Biodiversity surveys were conducted on Saba Bank, Netherlands Antilles, to assess ichthyofaunal richness and to compare with published surveys of other Caribbean localities. The primary objective was to estimate the total species richness of the Saba Bank ichthyofauna. A variety of sampling techniques was utilized to survey the fish species of both the visually accessible megafauna and the camouflaged and small-sized species comprising the cryptic ichthyofauna. Based on results presented herein, the number of species known on Saba Bank is increased from 42 previously known species to 270 species. Expected species-accumulation curves demonstrate that the current estimate of species richness …


Fisheries Occasional Publication No 75 - Research And Development Plan 2009-10, Department Of Fisheries Western Australia Oct 2009

Fisheries Occasional Publication No 75 - Research And Development Plan 2009-10, Department Of Fisheries Western Australia

Fisheries Occasional Publications

The Department of Fisheries R&D plan for 2009/10 outlines the research, monitoring and assessment activities that are specifically directed towards supporting the collection of information that will assist in achieving the objectives of the Fish Resources Management Act (1994) for the coming five year period. This series is updated on an annual basis and should be read in conjunction with the most recent State of Fisheries report where comprehensive analyses of the current status of each of the fisheries and fish habitat resources are described.

The plan specifically focuses on those activities that are currently planned or identified which directly …


Fisheries Occasional Publication No. 67 - Review Of Fisheries Research Report (177), Aldo Steffe, Department Of Fisheries Western Australia Apr 2009

Fisheries Occasional Publication No. 67 - Review Of Fisheries Research Report (177), Aldo Steffe, Department Of Fisheries Western Australia

Fisheries Occasional Publications

To provide a review of the Research Report (177) on recreational boat-based fishing in the West Coast Bioregion during 2005/06 including: • The appropriateness of the basic creel survey design used for deriving estimates of catch, effort and catch rates for this type of fishery. • An assessment of whether the assumptions, scope and omissions were suitably identified. • The robustness of the catch estimates, and any conclusions that were included in the report, and total and seasonal recreational catch estimates. These initial terms of reference were expanded to include some discussion on issues raised by (a) the WA Fisheries …


Fisheries Occasional Publication No. 66 - Scientific Review Of The West Coast Demersal Scalefish Fishery, Western Australia, Michael O'Neill, Department Of Fisheries Western Australia Apr 2009

Fisheries Occasional Publication No. 66 - Scientific Review Of The West Coast Demersal Scalefish Fishery, Western Australia, Michael O'Neill, Department Of Fisheries Western Australia

Fisheries Occasional Publications

In December 2008 the Hon Norman Moore MLC, Minister for Fisheries Western Australia appointed two independent experts to assess separately 1) the validity of scientific advice to management and 2) options to manage recreational fishing of west coast demersal scalefish. The following review (1) assesses the validity of research outlining the status of baldchin groper (Choerodon rubescens), West Australian dhufish (Glaucosoma hebraicum) and snapper (Pagrus auratus) as described in the terms of reference. In addition to the terms of reference, an opinion was requested regarding the current appropriateness of the research advice (Wise et al 2007) and the resulting management …


Fisheries Occasional Publication No. 63 - Western Rock Lobster Ecological Risk Assessment, Department Of Fisheries, Western Australia, International Risk Consultants Group Of Companies Mar 2009

Fisheries Occasional Publication No. 63 - Western Rock Lobster Ecological Risk Assessment, Department Of Fisheries, Western Australia, International Risk Consultants Group Of Companies

Fisheries Occasional Publications

This Ecological Risk Assessment, conducted by IRC Environment (part of International Risk Consultants) and Department of Fisheries WA (FWA) was the result of an initiative by the WA Fishing Industry Council (WAFIC) and (FWA). This report is based on a risk assessment workshop undertaken in February 2001 at the FWA Marine Research Laboratories in Waterman but includes additional background material to justify some of the rankings of the workshop.

The broad intent of the workshop was to provide a register of the potential main ecological risks that arise from the various activities carried out by the western rock lobster (WRL) …


Fisheries Occasional Publication No.057 - Introduced Marine Species In Western Australia, Department Of Fisheries Western Australia Mar 2009

Fisheries Occasional Publication No.057 - Introduced Marine Species In Western Australia, Department Of Fisheries Western Australia

Fisheries Occasional Publications

As the largest State in Australia, Western Australia (WA) has a long and relatively pristine coastline that stretches over 12,500 km, or over 20,700 km if the State’s 3,747 islands are included. The coast ranges over 20 degrees of latitude from the temperate south coast to the northern tip of the tropical Kimberley. There are a wide variety of coastal marine habitats in this vast area. The south coast has extensive white sandy beaches interspersed with granite headlands. A diverse range of nearly 800 species of temperate marine algae, or seaweeds, occurs in the area. With 26 species, the seagrasses …


Thirty-Seven Additional Microsatellite Loci In The Pacific Lion-Paw Scallop (Nodipecten Subnodosus) And Cross-Amplification In Other Pectinids, Jessica Lynn Petersen, Ana M. Ibarra, Bernie May Jan 2009

Thirty-Seven Additional Microsatellite Loci In The Pacific Lion-Paw Scallop (Nodipecten Subnodosus) And Cross-Amplification In Other Pectinids, Jessica Lynn Petersen, Ana M. Ibarra, Bernie May

Department of Animal Science: Faculty Publications

We characterized 37 new microsatellite markers in the Pacific lion-paw scallop (Nodipecten subnodosus) and tested for cross-amplification in four other species. Genetic diversity was estimated using 24 individuals from the Lagoon Ojo de Liebre, B.C.S., Mexico. Allelic richness varied from 5 to 27 alleles per locus and the average expected heterozygosity was 0.76. Ten loci exhibited significant departure from Hardy–Weinberg equilibrium likely due to the presence of null alleles. Sixteen of these markers cross-amplified in closely related N. nodosus, while little or no amplification was observed in three Argopecten species.


Trematoda (Platyhelminthes) Of The Gulf Of Mexico, Robin M. Overstreet, Joshua O. Cook, Richard W. Heard Jan 2009

Trematoda (Platyhelminthes) Of The Gulf Of Mexico, Robin M. Overstreet, Joshua O. Cook, Richard W. Heard

Harold W. Manter Laboratory of Parasitology: Faculty Publications

First paragraph:

The platyhelminth class Trematoda, consisting of the subclasses Aspidogastrea and Digenea, contains individuals referred to as digeneans, trematodes, or flukes. Aspidogastreans, not digeneans in the strict sense2 number about 80 species in total (Rohde 2005), but adults in the Gulf of Mexico of 4 species have been reported from teleost and chondrichthyan fishes (Hendrix and Overstreet I 977) and one from a turtle (Wharton 1939). Consequently, this chapter deals with trematodes rather than just digeneans, even though all the records but the 5 refer to digeneans. Trematoda is the largest group of platyhelminths, and trematode adults, other than …


Fisheries Occasional Publication No.72 - Western Rock Lobster Ecological Effects Of Fishing Research Plan., Rhys Brown Nov 2008

Fisheries Occasional Publication No.72 - Western Rock Lobster Ecological Effects Of Fishing Research Plan., Rhys Brown

Fisheries Occasional Publications

The commercial West Coast Rock Lobster Fishery (WCRLF) targets the western rock lobster (WRL), Panulirus cygnus, averaging approximately 10,000 tonnes of lobsters each year. Currently approximately 450 to 500 boats operate in the Fishery in waters ranging from 5 m to 200 m depth adjacent to the Western Australian coast and stretching from Cape Leeuwin in the south to Shark Bay in the north. The Fishery is managed by the Department of Fisheries (DoF) in Western Australia, using an input control system designed to constrain exploitation/fishing effort and deliver sustainable catches. The annual value of the catch is estimated at …


Fisheries Research Report No. 181 - Developing Long-Term Indicators For The Sub-Tidal Embayment Communities Of Cockburn Sound, Danielle Johnston, C. Wakefield, A Sampey, J Fromont, D C. Harris Oct 2008

Fisheries Research Report No. 181 - Developing Long-Term Indicators For The Sub-Tidal Embayment Communities Of Cockburn Sound, Danielle Johnston, C. Wakefield, A Sampey, J Fromont, D C. Harris

Fisheries Research Reports

Swan Catchment Council Project – 01-0506 T 2006 – 2008 program

The geomorphology of Cockburn Sound is unique to the lower west coast of Australia due to the relative paucity of sheltered nearshore marine embayments along this coastline. Numerous studies on many of the commercially and/or recreationally important species that inhabit Cockburn Sound have demonstrated that for many of them this marine embayment constitutes an integral part of their life history. Since the commencement of industrial and urban development in the mid 1950s, in the waters and along the shores of Cockburn Sound, the marine fauna utilising this area have …


Dictionary Of Invertebrate Zoology, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott Gardner Jan 2008

Dictionary Of Invertebrate Zoology, Mary Ann Basinger Maggenti, Armand R. Maggenti, Scott Gardner

Zea E-Books Collection

An exhaustive dictionary of over 13,000 terms relating to invertebrate zoology, including etymologies, word derivations and taxonomic classification. Entries cover parasitology, nematology, marine invertebrates, insects, and anatomy, biology, and reproductive processes for the following phyla: Acanthocephala Annelida Arthropoda Brachiopoda Bryozoa Chaetognatha Cnidaria Ctenophora Echinodermata Echiura Entoprocta Gastrotricha Gnathostomulida Kinorhyncha Loricifera Mesozoa Mollusca Nemata Nematomorpha Nemertea Onychophora Pentastoma Phoronida Placozoa Platyhelminthes Pogonophora Porifera Priapula Rotifera Sipuncula Tardigrada.

doi:10.13014/K2DR2SN5


Identifying Economic Indicators For Ecosystem-Based Management:, Scott Norris Dec 2006

Identifying Economic Indicators For Ecosystem-Based Management:, Scott Norris

Publications

In America and across the world, the use of ecosystem-based management is

increasing. One of the primary challenges faced in using this method of management is the integration of economic data and environmental information. This report explores the use of a new tool for integrating economic data, ecosystem-based economic indicators, in a case study of Elkhorn Slough National Estuarine Research Reserve, an estuarine environment located in Monterey County, CA. Research and literature reviews were used to detail the economic activities of the area, in order to identify possible indicators,criteria for evaluating the indicators, and potential sources of indicator data. After …


Characterization Of 35 Microsatellite Loci In The Pacific Lion-Paw Scallop (Nodipecten Subnodosus) And Their Cross-Species Amplification In Four Other Scallops Of The Pectinidae Family, Ana M. Ibarra, Jessica Lynn Petersen, Thomas R. Famula, Bernie May Jan 2006

Characterization Of 35 Microsatellite Loci In The Pacific Lion-Paw Scallop (Nodipecten Subnodosus) And Their Cross-Species Amplification In Four Other Scallops Of The Pectinidae Family, Ana M. Ibarra, Jessica Lynn Petersen, Thomas R. Famula, Bernie May

Department of Animal Science: Faculty Publications

Four microsatellite-enriched DNA libraries yielded 35 microsatellite loci from 100 primer pairs designed for Pacific lion-paw scallop, Nodipecten subnodosus. The number of alleles ranged from four to 28. Three of the 35 loci were not in Hardy–Weinberg equilibrium and linkage disequilibrium was found for one pair of loci. These microsatellites will be used to analyze the population structure of the species in Mexico’s Baja Peninsula to propose management strategies for scallop aquaculture development. Twenty-six primer pairs cross-amplified in Nodipecten nodosus, whereas none (Argopecten ventricosus) or few cross-amplified in the Argopecten species.


Proceedings Of The Western Australian Dhufish Workshop 2004, Mark Pagano, Terry Fuller Jan 2006

Proceedings Of The Western Australian Dhufish Workshop 2004, Mark Pagano, Terry Fuller

Fisheries Occasional Publications

The Western Australian Dhufish Workshop 2004 was a joint project between Recfishwest and the Western Australian Department of Fisheries.

The workshop incorporated presentations from the Department of Fisheries, Recfishwest, the Western Australian Fishing Industry Council, Murdoch University and Challenger TAFE to showcase current knowledge relating to the iconic dhufish in Western Australia. The perspectives of a recreational fisher, a commercial wetline operator and a metropolitan charter boat operator were also presented.

Through information sharing and discussion the workshop provided a platform to better understand the fundamental issues that underpin current and future management arrangements for this valuable resource. Both commercial …


Myxozoan Genera: Definition And Notes On Taxonomy, Life-Cycle Terminology And Pathogenic Species, Jiří Lom, Iva Dyková Jan 2006

Myxozoan Genera: Definition And Notes On Taxonomy, Life-Cycle Terminology And Pathogenic Species, Jiří Lom, Iva Dyková

Harold W. Manter Laboratory of Parasitology: Library Materials

A list of myxozoan genera is presented in the current taxonomical scheme. These genera are defined; their type species and most important pathogens along with their hosts are listed. Simultaneously, definitions of actinospore stages representing sexual stages of the myxosporean life cycle are given; altogether, 17 actinospore collective groups with 180 types have been described. Life cycles of the two classes of the phylum Myxozoa, Malacosporea and Myxosporea, are briefly outlined with specification of the appropriate terms. Up to now, 4 malacosporean and 2,180 myxosporean species assigned to a total of 62 genera, have been established. The surviving classification of …


An Evaluation Of The Use Of Technical Conservation Measures Within The Inshore Mixed Fishery Of Dingle Bay, Co. Kerry, Ireland., Tony Holmes Jun 2004

An Evaluation Of The Use Of Technical Conservation Measures Within The Inshore Mixed Fishery Of Dingle Bay, Co. Kerry, Ireland., Tony Holmes

Theses

Discarding has been identified as a global problem in fisheries. ICES, the EU and national governments have prioritised studying discarding as an area of research. In conjunction with Bord Iascaigh Mhara (BIM), the Marine Institute, Institute of Technology, Tralee and the Dingle Bay Inshore Management Development committee a study of the impacts of incorporating technical conservation measures (TCM’s) into trawls was undertaken. TCM’s under investigation included 80mm and 90mm square mesh panels inserted in the top-sheet before the cod-end, 100mm codends and a separator trawl. It was found that boats using 100mm cod-ends produced less discards than when towing standard …


Trachelomonas Spp. And Other Euglenophyceae Taxa In A Southeastern Virginia Lake, Harold G. Marshall Apr 2001

Trachelomonas Spp. And Other Euglenophyceae Taxa In A Southeastern Virginia Lake, Harold G. Marshall

Virginia Journal of Science

Trachelomonas species from Lake Kilby, a reservoir lake in southeastern Virginia are described with supportive electron micrographs. The most abundant Trachelomonas species wereT. hispida and T. volvocina. Other members of the Euglenophyceae occurring in this lake are identified.


Trachelomonas Spp. And Other Euglenophyceae Taxa In A Southeastern Virginia Lake, Harold G. Marshall Jan 2001

Trachelomonas Spp. And Other Euglenophyceae Taxa In A Southeastern Virginia Lake, Harold G. Marshall

Biological Sciences Faculty Publications

Trachelomonas species from Lake Kilby, a reservoir lake in southeastern Virginia are described with supportive electron micrographs. The most abundant Trachelomonas species were T. hispida and T. volvocina. Other members of the Euglenophyceae occurring in this lake are identified.


Diversity And Abundance Of Seaweeds On The Coral Reef Flats At Cape Rachado, West Coast Peninsular Malaysia, Jillian Lean Sim Ooi Jan 2001

Diversity And Abundance Of Seaweeds On The Coral Reef Flats At Cape Rachado, West Coast Peninsular Malaysia, Jillian Lean Sim Ooi

Student Works (2000-2009)

Three sites on the fringing coral reef flats at Cape Rachado, West Coast Peninsular Malaysia, were selected for the study of seaweed diversity and abundance. Each of these sites was identifiable with exposure to a particular environmental stress. Site A suffered from heavy loads of total suspended solids (TSS) caused by the removal of its adjoining coastal mangrove stand. Site B, by virtue of its accessibility and location on a popular stretch of beach, received a greater number of swimmers and beachwalkers. Water effluent (sewage) outlets from the various resorts lining the coast were observed at sites A and B. …


Kelimpahan Dan Biojisim Makrofauna Di Hutan Bakau Dan Kawasan Bersebelahan, Zainal Abidin Zakaria Jan 2000

Kelimpahan Dan Biojisim Makrofauna Di Hutan Bakau Dan Kawasan Bersebelahan, Zainal Abidin Zakaria

Student Works (2000-2009)

A study of abundance and biomass of the macrofauna in the mangroves in Sementa (Selangor) and Kuala Sepetang (Perak) was carried out monthly from September 1993 to December 1994 and from January 1994 to December 1994 . Two sites, a forested and a cleared area (deforested) were selected in each location for the study. Sampling for macrofauna was done by randomly selecting a spot and then pressing an aluminium quadrate of 40 cm x 40 cm into the sediment up to a depth of 20 cm. Eight quadrates were sampled on each occasion. The macrofauna community consisted of the following …


Distribution Of Some Heavy Metals In Selected Components Of A Coral Reef Ecoysystem At Cape Rachado, Malaysia, Abdulbaset Abdurrahman Ab. Abuissa Jan 2000

Distribution Of Some Heavy Metals In Selected Components Of A Coral Reef Ecoysystem At Cape Rachado, Malaysia, Abdulbaset Abdurrahman Ab. Abuissa

Student Works (2000-2009)

The coral reef ecosystem at Cape Rachado, is the only remaining fringing coral reef along the west coast of Peninsular Malaysia. The reef represents an interesting ecosystem with diverse flora and fauna and possesses a critical geographical location at the Straits of Malacca. The reef ecosystem especially the associated seaweed flora, was shown to be sensitive to development when increased silt levels led to loss of sensitive species of seaweeds. As yet, no study of heavy metal distribution and bioaccumulation in the coral reef area has been done. This study was aimed to investigate the distribution and bioaccumulation of iron, …


The Distribution And Abundance Of Fish And Macrobenthic Communities In Relation To Environmental Factors In Klang Strait (Malaysia), Salem Wniss Zgozi Jan 2000

The Distribution And Abundance Of Fish And Macrobenthic Communities In Relation To Environmental Factors In Klang Strait (Malaysia), Salem Wniss Zgozi

Student Works (2000-2009)

Fish and macroinvertebrate distribution and abundance in the Klang Strait (Malaysia) were investigated in relation to waler and bottom sediment characteristics. Thirteen water and bottom sediment parameters were measured and analysed using principal component analysis (PCA). PCA of these parameters distinguished three major habitat groupings in the Klang Strait: ( I) nearshore estuaries and mudflats, characterized by very turbid, lower salinity waters and muddy substrates, (2) offshore sandy habitat centred around the northern half of Angsa Bank, and characterized by less turbid, oxygen-riched and higher salinity water, and (3) offshore very fine sand habitat located largely on the southern half …


Phytoplankton Composition Within The Tidal Freshwater Region Of The James River, Virginia, Harold G. Marshall, Lubomira Burchardt Jan 1998

Phytoplankton Composition Within The Tidal Freshwater Region Of The James River, Virginia, Harold G. Marshall, Lubomira Burchardt

Biological Sciences Faculty Publications

Based on a 10.5 year data set, 271 taxa were identified at a single tidal freshwater station in the James River. The mean monthly concentrations of major algal categories, total biomass and productivity are given. Diatom maxima were associated with peak periods of river discharge, with chlorophytes, cyanobacteria, and autotrophic picoplankton abundance and productivity greater during reduced river flow and more stable water conditions.


Metazoan Parasites And Other Symbionts Of Cetaceans In The Caribbean, Antonio A. Mignucci-Giannoni, Eric P. Hoberg, Doug Siegel-Causey, Ernest H. Williams Jr. Jan 1998

Metazoan Parasites And Other Symbionts Of Cetaceans In The Caribbean, Antonio A. Mignucci-Giannoni, Eric P. Hoberg, Doug Siegel-Causey, Ernest H. Williams Jr.

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The parasite fauna in cetaceans from Puerto Rico, the Virgin Islands, and the larger Caribbean region is poorly known. We provide the first records for parasite biodiversity among a diverse assemblage of cetaceans from the Caribbean Sea. Internal and external parasites and commensals were collected from stranded whales and dolphins salvaged in Puerto Rico, the United States and British Virgin Islands, Jamaica, and Venezuela between 1989 and 1997. A total of 47 individuals of 16 species of whales and dolphins (15 odontocetes and one mysticete) were examined. Overall, parasites and commensals were found in 34 (72.3%) animals, representing 13 species …


Faunal Diversity Among Avian Parasite Assemblages: The Interaction Of History, Ecology, And Biogeography In Marine Systems, Eric P. Hoberg Jan 1996

Faunal Diversity Among Avian Parasite Assemblages: The Interaction Of History, Ecology, And Biogeography In Marine Systems, Eric P. Hoberg

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Systematics and parasite biodiversity provide power and predictability in broad studies of history, ecology and biogeography in marine systems. Parasitic helminths are elegant markers of contemporary and historical ecological relationships, geographic distribution and host-phylogeny. Complex life cycles of helminths are strongly correlated with intricate food-webs. Dependence on a series of intermediate, paratenic, and definitive hosts indicates that each parasite species represents an array of organisms within a community and tracks broadly and predictably across many trophic levels. Host and geographic ranges of parasites are historically constrained by genealogical and ecological associations, and these determinents interact resulting in characteristic parasite community …


Historical Biogeography And Modes Of Speciation Across High-Latitude Seas Of The Holarctic: Concepts For Host-Parasite Coevolution Among The Phocini (Phocidae) And Tetrabothriidae (Eucestoda), Eric P. Hoberg Jan 1995

Historical Biogeography And Modes Of Speciation Across High-Latitude Seas Of The Holarctic: Concepts For Host-Parasite Coevolution Among The Phocini (Phocidae) And Tetrabothriidae (Eucestoda), Eric P. Hoberg

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Species of Anophryocephalus are host-specific parasites of pinnipeds in the Holarctic. Phylogenetic analysis of 7 species postulates A. anophrys as the basal taxon and A. inuitorum as basal to A. skrjabini; A. arcticensis is basal to A. nunivakensis and A. eumetopii + A. ochotensis (single tree; consistency index = 74.4%; homoplasy slope ratio = 36.45%). Evaluation of host and geographic distributions postulates ringed seals of the Atlantic-Arctic as ancestral hosts, and the Arctic basin as a paraphyletic area with respect to the North Pacific. Cospeciation within this assemblage was dependent on intense isolation of small effective populations of definitive hosts …