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Fisheries Report No 22 - The Western Rock Lobster Fishery 1971 - 1972, G. R. Morgan, E H. Barker

Fisheries Research Reports

The fishery for the western rock lobster* is one of the most important single fisheries in Australia and an important export earner for the State. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and which are designed to limit the total effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both to ensure that the effort is remaining within the accepted limits and that the regulations are adequately performing their function of maintaining reasonably stable catches. Inherent …

Fisheries Report No 25 - The Western Australian Amateur Fishery For Australian Herring (Arripis Georgianus) - Results Of The 1973 Creel Census, R C.J. Lenanton, N. G. Hall

Fisheries Research Reports

Historically, the Western Australian production of Australian herring (Arrtpts georgtanus) has fluctuated from year to year in response to changing market demand. Prior to 1968, the annual catch taken by professional fishermen was relatively stable, ranging from 200 000 kg (approx. 500 000 pounds) to 450 000 kg (approx. 1 000 000 pounds). From 1968, commercial production has risen to a peak of 1 187 440 kg (2 617 857 pounds) recorded in 1972/73 (Table I). An increase in demand for herring as bait for the rock lobster fishery is considered to be the major factor involved in this observed …

Vegetative Morphology And Anatomy Of The Salt Marsh Rush, Juncus Roemerianus, Lionel N. Eleuterius

Gulf and Caribbean Research

The extensive rhizome development found in Juncus roemerianus makes this species unique among rushes and is a biological feature responsible, in part, for its domination of large tracts of salt marsh. Branching in certain mature plants is distinctly sympodial, while in most it is obscured by precocious development of the continuation bud and appears to be monopodial. Each vegetative unit is composed of a scaly rhizome which grows to varying lengths and then abruptly turns up at the end to become an erect shoot. A continuation rhizome consistently arises from an axillary bud in a ventral scale leaf. Transitional leaves …

Shrimp Population Densities Within Mobile Bay, Harold C. Loesch

Gulf and Caribbean Research

Brown shrimp and white shrimp populations available to the shrimp trawl in Mobile Bay were estimated on a monthly basis by two methods: one using existing commercial statistics and the other using experimental trawling. These methods produced similar estimates for brown shrimp whose peak standing crop in Mobile Bay occurred in June-July and was estimated at 200,000-300,000 pounds. Commercial landings peaked in July at about 342,000 pounds and were higher than the standing crop, indicating an extremely fast growth rate.

White shrimp data were variable, with commercial statistics indicating a crop in Mobile Bay of about 100,000 pounds from September …

A Bibliography Of Anomalies Of Fishes: Supplement 3, C.E. Dawson, Elizabeth Heal

Gulf and Caribbean Research

This third supplement adds 158 titles to “A Bibliography of Anomalies of Fishes,” which was originally published in this journal in 1964; the first supplement followed in 1966 and the second supplement, in 1971. Citations now total 1498 in the series.

El Tiburón De La Película “Tiburón”, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Biology And Distribution Of The Macrocoelenterates Of Mississippi Sound And Adjacent Waters, W. David Burke

Gulf and Caribbean Research

Studies conducted in Mississippi Sound from April 1971 through June 1973 elucidated the seasonal and areal distribution of seven species of macrocoelenterates: Aurelia aurita (L), Chrysaora quinquecirrhu (Desor 1848), Pelagia noctiluca Forskål 1775, Chiropsalmus quadrumantus (Miiller 1859), Rhopilema verrillii (Fewkes 1887), Stomolophus meleagris L. Agassiz 1862, and Physalia physalis (L). Physical parameters presumed relevant to the distribution of each of these animals are presented. Developmental histories of certain of these forms are described.

Penaeid Shrimp Distributions In Mobile Bay, Alabama, Including Low-Salinity Records, Harold C. Loesch

Gulf and Caribbean Research

Low-salinity records in the Gulf of Mexico area for taking Penaeus duorarum in water of 0.7‰ and 28°C, and Penaeus aztecus in water of 0.2‰ and 29.5°C were established in Mobile Bay, Alabama. Catches in Mobile Bay of approximately 20,000 each of P. aztecus and Penaeus setiferus, distributed over a 30-month period, show that P. aztecus taken in the hotter months had a wider salinity preference (5 to 30‰) than those taken in the cooler months (10 to 15‰). During the warmer months P. setiferus was most common in waters below 5‰ and during the winter months was almost …

Growth Of The Shrimp, Penaeus Aztecus, Fed A Diet Of Live Mysids (Crustacea: Mysidacea), John Ogle, Wayne Price

Gulf and Caribbean Research

Commercial brown shrimp (Penaeus aztecus) were shown to consume large numbers of mysid shrimp (Mysidopsis almyra) under laboratory conditions. Growth of shrimp fed a diet of mysids was comparable to growth of shrimp fed a diet of Artemia nauplii. It is suggested that mysid shrimp may serve as a food source for juvenile penaeid shrimp in northwestern Gulf coast estuaries.

Technique For Estimating Trawl Efficiency In Catching Brown Shrimp (Penaeus Aztecus), Atlantic Croaker (Micropogon Undulatus) And Spot (Leiostomus Xanthurus), Harold Loesch, James Bishop, Arthur Crowe, Robin Kuckyr, Paul Wagner

Gulf and Caribbean Research

Mark-recapture experiments conducted in a small 17.5 ha lake in Barataria Bay, Louisiana, were used to estimate the efficiency of a 4.9-m (16-foot) otter trawl in capturing brown shrimp, Atlantic croaker, and spot in water 1.5 m deep. The trawl was observed to sweep an area 2.5 m in width. Trawl efficiency was determined to be approximately one-third to one-half for brown shrimp, one-fourth for Atlantic croaker, and only 6 percent for spot.

The Ecology Of Some Harpacticoid Copepods Of A California Sand Flat, David R. Williams

University of the Pacific Theses and Dissertations

The main purpose of this study is to describe the population ecology of eight species of harpacticoid copepods over a period of one year with emphasis on the effects of physical interactions and biotic factors on these populations. The species were: Amphiascopsis sintus (Claus) 1866, Stenhelia (D.) oblonga Lang, 1965, Heterolaphote variables Lang, 1965, Ectinosoma melaniceps Boek ? var. T. Scott, 1902, Paralophonte subterraneas Lang, 1965, Tisbe furcata (Baird) 1837, Diasaccus spinatus Cambell, 1929 and Parathelestris bulbiseta Cambell?.

The Structure Of Experimental Clastic-Substrate Marine Communities, Wayne Aloysius Evans

University of the Pacific Theses and Dissertations

It is hypothesized that difference between containers and between sediments will produce structural differences in the resulting communities by intensifying competition for resources, and by excluding certain classes of predators. It is also hypothesized that the level of the effect of container, substrate, and time on community structures will be dependent on tidal level.

Paine (1969) and Dayton (1972) have demonstrated that the structure of some communities is largely determined by the effects of foundation, or keystone, species. It is suggested that the structure of classic-substrate communities may be determined similarly.

Seasonal Distribution Of Higher Marine And Aquatic Fungi In The Back Bay National Wildlife Refuge, Scott Schatz

Biological Sciences Theses & Dissertations

Abstract unavailable.

The Life History Of The Teardrop Darter, Etheostoma Barbouri Kuehne And Small, In Kentucky, Rory Flynn

Masters Theses & Specialist Projects

The life history of the teardrop darter, Etheoctoma (Catonotus) barbouri Kuehne and Small, was intensively studied from September, 1972, through August 1973. A total of 299 teardrop darters was seined from two isolated populations in Alexander and Little Muddy Creeks, Kentucky. These darters are known only to occur in second, third or fourth order tributaries of the Green River in Kentucky and Tennessee, and normally seek protection afforded by rocky or vegetated edges of such streams.

Gonosomatic ratios indicated that teardrop darters spawned from late March through late May in waters 12.5 - 15.5 C. Young females developed primary ova …

Microbenthic Algal Production Of An Intertidal Sandflat In Little Creek Harbor, Virginia Beach, Virginia, Clayton Barry Shedrow

OES Theses and Dissertations

Estimated annual net microbenthic algal production of an intertidal sandflat on Little Creek Inlet, Virginia Beach, Virginia, was 105 g C/m². Seasonally, primary production was greatest during the summer and fall periods (38 and 49 g C/m², respectively). Productivity was found to vary directly with water temperature and standing crop of benthic diatoms, and inversely with incident solar radiation and standing crops of sedimentary chlorophyll 'a' and 'c'. Orthophosphate and nitrate-N appeared to be limiting factors, nitrate-N more so than orthophosphate. Mean annual net photosynthetic efficiency (based upon total light) for the microphytobenthic community was 0.09%. …

Shell Growth In The Scallop Argopecten Irradians. I. Isotope Incorporation With Reference To Diurnal Growth, Alfred P. Wheeler, Patricia Blackwelder, Karl M. Wilbur

Marine & Environmental Sciences Faculty Articles

1. Incorporation of calcium and carbonate into shell has been studied in the scallop Argopecten irradians using ⁴⁵Ca and ¹⁴C-bicarbonate.

2. The incorporation of ⁴⁵Ca and ¹⁴C-carbonate into shell was linear with time after a lag period of 1 to 2 hours. The shell-forming mantle tissue attained a steady state with respect to ⁴⁵Ca in the sea water medium within 2 hours.

3. The molar ratio of ⁴⁵Ca to ¹⁴C-carbonate deposited in shell was not significantly different from unity during 5 hours.

4. The rate of incorporation of ¹⁴C-carbonate into shell was …

Distribution And Relative Abundance Of Billfishes (Istiophoridae) Of The Indian Ocean, John Kenneth Howard, Walter A. Starck Ii

Studies in Tropical Oceanography

No abstract provided.

Fisheries Report No 19 - The Western Rock Lobster Fishery 1973 - 1974, G. R. Morgan, E H. Barker

Fisheries Research Reports

The fishery for the western rock lobster* is one of the most important single fisheries in Australia and an important export earner for the State. The fishery is governed by a complex set of regulations which have been reviewed by Bowen (1971) and which are designed to limit the total effort to acceptable levels and to enforce a legal minimum size. It is thus important to constantly monitor the state of the fishery both to ensure that the effort is remaining within the accepted limits and that the regulations are adequately performing their function of maintaining reasonably stable catches. Inherent …

Las Anguilas, Eternas Pasajeras De Las Aguas, Aldemaro Romero Jr., Xavier Gimeno

Publications and Research

No abstract provided.

Una Tortuga Llamada “Matá-Matá”, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

La Ballena Gris, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Fisheries Report No 18 - Tuna Survey In Waters Off The Western Australian Coast During The Period August 1973 To August 1974, J. P. Robins

Fisheries Research Reports

In September 1972, Markwell Ross Fisheries Pty Ltd (a subsidiary fishing division of Q.U.F. Industries Ltd) approached the Western Australian Department of Fisheries and Fauna (now Department of Fisheries and Wildlife) for assistance in the development and carrying out of a purse seining programme using the 25m rock lob­ster vessel F.B. Western Star.

Negotiation and agreement was reached, with the objective to under­take and carry out an investigation into the feasibility of developing a purse seine fishery for tuna in Western Australian waters. The Department of Fisheries and Wildlife (Development Section) supplied, on loan, capital fishing equipment (purse seine net, …

Fisheries Report No 17 - Some Aspects Of Tuna And Its Potential In The Oceanic Waters Off Western Australia, J. P. Robins

Fisheries Research Reports

In this report an endeavour has been made to describe very briefly the growth of the tuna fishery in Australia, world production, utilisation, price and future demand, tuna species descriptions, species occurrence around the Australian coast and the results of two aerial surveys for tuna off. the west and north-west coasts of Western Australia.

El Delfín, “Modelo” De La Ingeniería Naval, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Aquatic Ascomycetes From Lake Itasca, Minnesota, A. R. Cavaliere

Biology Faculty Publications

A preliminary report of the aquatic Ascomycetes of Lake Isasca, Minnesota. Included is an introduction, methods of harvesting and studying, a key, description, and illustrations of 19 common ascomycetous fungi inhabiting the study area.

Amino Acid Changes During In Vitro Decomposition Of Marsh Plant Detritus, Armando A. De La Cruz, Kirit D. Chapatwala, William E. Poe

Gulf and Caribbean Research

Dead plant material was collected from a tidal marsh, ground to a uniform size (250 μm) and decomposed in vitro at 30°C in darkness for 36 days. Crude protein, total amino acids, and essential amino acids increased from 19.0 to 31.0 mg/g, 11.1 to 17.6 mg/g and 5.8 to 8.1 mg/g respectively from day 0 to day 36. The amino acid and crude protein values observed in the detritus are generally low but the increment during decomposition is considered significant in terms of the marine consumers that depend on highly decomposed detritus for food.

Pericardial Adhesions In The Cobia Rachycentron Canadum (Linnaeus), Harold D. Howse, James S. Franks, Robert F. Welford

Gulf and Caribbean Research

Pericardial adhesions are reported in diseased hearts of the cobia Rachycentron canadum (Linnaeus). The epicardium and pericardium are either tightly fused or connected by numerous thick collagenous adhesions over most of the heart surface.

A Comparison Of Petersen Tags And Biological Stains Used With Internal Tags As Marks For Shrimp, B.D. Welker, S.H. Clark, C.T. Fontaine, R.C. Benton

Gulf and Caribbean Research

During May 20-31, 1968, 14,301 brown shrimp (Penaeus aztecus) were marked and released in Biloxi Bay, Mississippi. Of these 7,023 were marked by injection with a combination of Niagara Sky Blue 6B stain and polyvinyl chloride (PVC) internal tags and 7,278 were marked with Petersen tags. The objectives of this experiment were to compare the two methods as marks for shrimp and to obtain information on growth rates and migrations. Eighteen weeks after release, 1,942 (28%) of those marked with the biological stain-internal tag combination and 2,286 (31%) of those marked with Petersen tags had been recovered. The …

Mississippi Flora. Iv. Dicotyledon Families With Aquatic Or Wetland Species, Samuel B. Jones Jr.

Gulf and Caribbean Research

The first paper in this series treated some of the monocotyledon families with aquatic or wetland species (Jones 1974). The primary aim of this paper is to improve our knowledge of some of the dicotyledon families with aquatic and wetland plants in Mississippi. Hopefully, this paper will be reviewed and criticized by many, and corrected before the proposed Guide to the Flora of Mississippi is published.

Bioacústica En El Comportamiento De Los Animales Subacuáticos, Aldemaro Romero Jr.

Publications and Research

No abstract provided.