Marine Biology Commons^™

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 …

A Wake-Based Correlate Of Swimming Performance And Foraging Behavior In Seven Co-Occurring Jellyfish Species, John O. Dabiri, Sean Colin, K. Katija, John H. Costello

Arts & Sciences Faculty Publications

It is generally accepted that animal–fluid interactions have shaped the evolution of animals that swim and fly. However, the functional ecological advantages associated with those adaptations are currently difficult to predict on the basis of measurements of the animal–fluid interactions. We report the identification of a robust, fluid dynamic correlate of distinct ecological functions in seven jellyfish species that represent a broad range of morphologies and foraging modes. Since the comparative study is based on properties of the vortex wake – specifically, a fluid dynamical concept called optimal vortex formation – and not on details of animal morphology or phylogeny, …

The Importance Of Open Access In Technology Transfer For Marine Ornamental Aquaculture: The Case Of Hobbyist-Led Breeding Initiative, Andrew L. Rhyne

Arts & Sciences Faculty Publications

Access to peer-reviewed literature is often restricted to a limited segment of the target audience. Barriers are in place to prevent open access information. Here, I present a case study of how the internet and hobbyists are transforming both access and flow of information from closed circles to open dialogue within the field of marine ornamental fish rearing. This open approach is leading to innovation a rate remarkably faster and at a lower costs than could have been accomplished by traditional methods. Aquaculture societies, aquarium professionals, hobbyists, and scientists pursuing the captive production of species should embrace this movement. Whether …

The Evolution Of Euhermaphroditism In Caridean Shrimps: A Molecular Perspective Of Sexual Systems And Systematics, G. Curt Fiedler, Andrew L. Rhyne, Ryoko Segawa, Tadashi Aotsuka, Nikolaos V V. Schizas

Arts & Sciences Faculty Publications

The hippolytid genus Lysmata is characterized by simultaneous hermaphroditism, a very rare sexual system among Decapoda. Specialized cleaning behavior is reported in a few pair-living species; these life history traits vary within the genus. Unfortunately, the systematics of Lysmata and the Hippolytidae itself are in contention, making it difficult to examine these taxa for trends in life history traits. A phylogeny of Lysmata and related taxa is needed, to clarify their evolutionary relationships and the origin of their unique sexual pattern. In this study, we present a molecular phylogenetic analysis among species of Lysmata, related genera, and several putative …

Effects Of Salinity On Reproduction And Survival Of The Calanoid Copepod Pseudodiaptomus Pelagicus, Cortney L. Ohs, Andrew L. Rhyne, Scott W. Grabe, Matthew A. Dimaggio, Erik Stenn

Arts & Sciences Faculty Publications

Four experiments were conducted on the calanoid copepod, Pseudodiaptomus pelagicus, to determine the effects of salinity on survival, development time, reproductive output, and population growth in order to define the optimal salinity for culture. To determine the appropriate experimental salinity range we exposed nauplii and adults to abrupt salinity changes from 35 g/L to 5, 10, 15, 35, 42, and 48 g/L at 30 °C and determined survival after 24 hours. The second experiment stocked early stage nauplii into 1 L beakers after which they were cultured using standard procedures for 10 days at six salinities (10, 15, 20, …

Bryostatins: Biological Context And Biotechnological Prospects, Amaro E. Trindade-Silva, Grace E. Lim-Fong, Koty H. Sharp

Arts & Sciences Faculty Publications

Coral animals harbor diverse microorganisms in their tissues, including archaea, bacteria, viruses, and Bryostatins are a family of protein kinase C modulators that have potential applications in biomedicine. Found in miniscule quantities in a small marine invertebrate, lack of supply has hampered their development. In recent years, bryostatins have been shown to have potent bioactivity in the central nervous system, an uncultivated marine bacterial symbiont has been shown to be the likely natural source of the bryostatins, the bryostatin biosynthetic genes have been identified and characterized, and bryostatin analogues with promising biological activity have been developed and tested. Challenges in …

Roles Of Src Family Kinase Signaling During Fertilization And The First Cell Cycle In The Marine Protostome Worm Cerebratulus, Stephen A. Stricker, David J. Carroll, Wai L. Tsui

Ocean Engineering and Marine Sciences Faculty Publications

For eggs to generate a calcium response during fertilization, the sperm of many deuterostome animals must first activate a group of egg kinases, called Src family kinases (SFKs). However, whether SFK activation is also required for fertilization-induced calcium signals in eggs of protostomes remains unknown. Thus, in this study, unfertilized oocytes of the marine protostome worm Cerebratulus were treated with either PP2 to inhibit SFKs or with U73122 to block phospholipase C activity downstream of SFK. Compared with control fertilizations, the inhibitors significantly reduced post-insemination levels of polar body formation and cleavage, but apparently did so via different mechanisms, based …

Dopamine Modulates The Lateral Giant Neuron And Serotonergic Facilitation In Crayfish, Joshua Scott Titlow

Theses, Dissertations and Capstones

The lateral giant (LG) neural circuit is a model system used to study the function of individual neurons. The LG circuit is part of a tail flip escape reflex that is a defensive behavior for crayfish. This thesis begins by addressing the effects of dopamine (DA), a neurotransmitter involved in normal and abnormal behaviors of most animals. Here it is shown that dopamine decreases the excitability of the LG neuron, a trigger for the escape reflex. An electrophysiology protocol was used to mimic sensory input to the LG neuron. Stimulating a sensory nerve in the last ganglion with an electrode …

Do Different Levels Of Fishing Pressure, Through Spatial Management, Influence Communities And Ecological Interactions In Seagrass Meadows In South Western Australia?, Karina Inostroza

Theses : Honours

Marine Protected Areas (MPAs) are internationally recognised as a significant spatial management and cost-effective strategy to restore and conserve the marine ecosystems structure and function from human impact. MPAs have been declared with the aim to address a single or a set of management objectives in response to anthropogenic threats, such as fishing, which can have repercussions on biodiversity through indirect interactions or top-down control within an ecosystem or across ecosystems where consumers migrate to forage. However, this indirect impact of fishing remains poorly understood, and as a consequence, the effectiveness of MP As in conserving those ecological processes and …

2010 Piscataqua Region Comprehensive Conservation And Management Plan (Ccmp), Piscataqua Region Estuaries Partnership

PREP Reports & Publications

In the fall of 2010, the Piscataqua Region Estuaries Partnership (PREP) completed an 18-month effort to understand current and future environmental issues affecting the Region’s estuaries, to establish realistic goals and objectives for the next 10 years, and to create effective action plans to systematically achieve the shared environmental goals of a broad base of Regional stakeholders.

With input from more than 150 individuals, representing 82 organizations, PREP compiled the 2010 Piscataqua Region Comprehensive Conservation and Management Plan (CCMP) that lays the foundation for work over the next decade to protect and restore the Region’s estuaries and associated watersheds

2010 Piscataqua Region Comprehensive : Executive Summary, Piscataqua Region Estuaries Partnership

PREP Reports & Publications

In the fall of 2010, the Piscataqua Region Estuaries Partnership (PREP) completed an 18-month effort to understand current and future environmental issues affecting the Region’s estuaries, to establish realistic goals and objectives for the next 10 years, and to create effective action plans to systematically achieve the shared environmental goals of a broad base of Regional stakeholders.

With input from more than 150 individuals, representing 82 organizations, PREP compiled the 2010 Piscataqua Region Comprehensive Conservation and Management Plan (CCMP) that lays the foundation for work over the next decade to protect and restore the Region’s estuaries and associated watersheds.

Phocine Distemper Virus Induced Demyelination In The Spinal Cord Of Infected Harbor Seals (Phoca Vitulina), Thomas Siemens

All Theses And Dissertations

Phocine Distemper Virus (PDV) is a Morbillivirus that has been responsible for the death of approximately 40,000 phocid seals in the last three decades. The most commonly reported pathology is virally induced demyelination of the cerebrum and brainstem which leaves axons bare and limits their conductivity of action potentials. While these conditions have been studied at length, there is little mention of spinal cord involvement. This study aims to determine whether demyelination found in the brainstem continues into the cervical spinal cord. The results indicate that demyelination in the cervical spinal cord does not occur alongside the brainstem. It is …

Endohelminths Of A Snake Mackerel, Gempylus Serpens (Trichiuroidea: Gempylidae), From The Gulf Of Mexico, Charles K. Blend, Norman O. Dronen, James S. Franks, George W. Benz

Gulf and Caribbean Research

Endohelminths are reported from a female snake mackerel, Gempylus serpens (Trichiuroidea: Gempylidae), captured from a depth of 61 m in the Gulf of Mexico 140 km south of the mouth of Mobile Bay, AL, in August 1998. A diverse endohelminth parasite fauna was found: 29 plerocercoid type I tetraphyllideans from the lower intestine; 4 didymozoid metacercariae allocated to the collective group Monilicaecum and one didymozoid metacercaria of the collective group Torticaecum from the pyloric cecum; one juvenile Gonocerca phycidis from the stomach; and 5 larvae (L3 stage) comprising 3 species of Anisakis from the pyloric cecum. These nematodes were identified …

Recruitment And Colonization Of Macroalgae To A Newly Constructed Rocky Intertidal Habitat In The Northwest Gulf Of Mexico, Ryan L. Fikes, Roy L. Lehman

Gulf and Caribbean Research

Marine macroalgal assemblages on artificial structures play an important ecological role in coastal and estuarine ecosystems and may supplement natural communities in nearby waters. The rocky jetties of Packery Channel, located near Corpus Christi, Texas represent a recent addition of hard structure for colonization in the northwest Gulf of Mexico. The purpose of this research was to monitor the initial immigration of macroalgal species during the first year of colonization and determine the effects of wave energy on recruitment. Ten sampling sites were established along the offshore portion of the new Packery Channel jetties. Samples were taken bimonthly from along …

Observations On The Kalliapseudid Tanaidacea (Crustacea: Malacostraca: Peracarida) From The Northwestern Atlantic, With An Illustrated Key To The Species, David T. Drumm, Richard W. Heard

Gulf and Caribbean Research

New information for the kalliapseudid Tanaidacea occurring in the northwestern Atlantic is presented and discussed, including data on range extensions and new depth ranges for 4 species. The taxa studied came from the shelf and coastal waters of the southeastern United States, Puerto Rico and Trinidad. The occurrence of Mesokalliapseudes bahamensis Sieg is extended from the Bahamas and Belize to the coastal waters of East and Gulf coasts (South Carolina to West Florida). The range of Psammokalliapseudes granulosus Brum is expanded northward into the eastern Gulf of Mexico and new locality records for this species are established for Tobago and …

Evaluating Management Actions For Spotted Seatrout, Cynoscion Nebulosus, In Mississippi With An Age-Structured Projection Model, Richard S. Fulford, J. Read Hendon

Gulf and Caribbean Research

Spotted seatrout, Cynoscion nebulosus, is an important recreational fishery in the coastal waters of the Gulf of Mexico and is the most sought after gamefish in coastal Mississippi. The management of C. nebulosus is state-specific, and unlike other similarly managed species, data on both population structure and movement support the existence of local sub-stocks. It is important for each state to clearly examine its own sub-stock in the context of its own state fishery in order to properly manage for local sustainability. We used an age-structured assessment model to examine the status (1993–2005) of the Mississippi C. nebulosus population …

Notes On The Biology Of An Adult Female Chimaera Cubana Captured Off St. Croix, U.S. Virgin Islands, William B. Driggers Iii, Jill M. Hendon, Michael J. Andres, Stephen S. Curran, Christopher T. Gledhill, Mark A. Grace, Michael D. Hendon, Christian M. Jones, Brandi T. Noble, Kevin R. Rademacher

Gulf and Caribbean Research

Within the western North Atlantic Ocean there are at least 4 genera and 5 species of chimaeroids occurring in deep waters generally associated with outer continental slopes or areas of high bathymetric relief (Didier 2002; Didier 2004). Two chimaeroids, Chimaera cubana and Hydrolagus alberti, are known to be indigenous to the Caribbean Sea in waters associated with the Greater and Lesser Antilles. While H. alberti occurs throughout the Gulf of Mexico and the Caribbean Sea, C. cubana is thought to be endemic to an area bounded by Cuba and Colombia (IUCN 2009). These two chimaeras are readily differentiated by …

Salinity Tolerance And Osmotic Response Of The Estuarine Hermit Crab Pagurus Maclaughlinae In The Indian River Lagoon, Florida, Sarah E. Rhodes-Ondi, Richard L. Turner

Ocean Engineering and Marine Sciences Faculty Publications

Pagurus maclaughlinae is the most common hermit in the Indian River Lagoon System. Wide variations in lagoonal salinity make it likely that P. maclaughlinae is euryhaline and that other hermit species in the area are more stenohaline, at least in some stages of their life histories. In a study of salinity tolerance, crabs were held unfed at salinities of 5–50 (25 control) for up to 30 d. Based on survivorship curves, P. maclaughlinae tolerated acute exposure to salinities of 10–45 for up to 18 d, and survivorship up to 30 d at 20–45 equaled or exceeded survivorship of the control. …

Morphological Differences Among Eyeless Amphipods In The Genus Stygobromus Dwelling In Different Subterranean Habitats, David C. Culver, John R. Holsinger, Mary C. Christman, Tanja Pipan

Biological Sciences Faculty Publications

The amphipod genus Stygobromus occurs in a variety of subterranean habitats in North America, including caves, phreatic (groundwater) lakes, and superficial subterranean habitats (seeps and epikarst). The habitats share the absence of light but differ in other features, such as pore size of the habitat, available food, and degree of seasonality. Measurements of body size, antennal size, and antennal segment number of type specimens were compared for 56 species occurring in the eastern United States. Except for differences in body size, differences among species in the four different habitats were not significant. Body size was related to relative pore size …

Snail Grazing Facilitates Growth Of A Bloom-Forming Alga, Michele Guidone, Carol S. Thornber, Emily Field

Biology Faculty Publications

Herbivory often has a negative effect on plants. However, there is a growing number of examples, primarily in terrestrial ecosystems, where herbivory causes an increase in plant size, growth rate, and/or reproductive output. In marine ecosystems, the positive effects of herbivores on macroalgae are not as well studied, although limited evidence exists for herbivore-induced increases in macroalgal growth rates via 2 mechanisms: nutrient addition via grazer defecation, and epiphyte removal. In this study, we examined the effects of grazing by the mud snail Ilyanassa obsoleta on Ulva lactuca, the dominant bloom-forming macroalga in many New England estuaries. We found …