Browsing by Journal Issue "scas/vol75/iss2"
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A Contribution to the Life History of a Small Rattail Fish, Coryphaenoides carapinus
The North Atlantic macrourid Coryphaenoides (Lionurus) carapinus lives between about 1200 and 2800 m off southern New England, with greatest abundance of about 2.4 individuals/ 1000 m- in the transition zone from slope to ... -
A New Nonparasitic Species of Lamprey of the Genus Entosphenus Gill, 1862, (Petromyzonidae) From South Central California
A new nonparasitic lamprey from the Friant-Kern Canal, east of Delano, California, is described and illustrated. The holotype (number CAS 35987) is deposited in the California Academy of Sciences, San Francisco, California. ... -
A Study of the Orientation of Selected Embiotocid Fishes to Depth and Shifting Seasonal Vertical Temperature Gradients
The effects of seasonal temperature variation on the depth distribution of five species of embiotocids in King Harbor, California were studied. Three types of depth distributions were found: Micromelrus minimus was restricted ... -
Aquarium Maintenance of Mesopelagic Animals: A Progress Report
Literature and experiments in progress concerning the capture and aquarium maintenance of midwater fishes and invertebrates are discussed. The longevity and survival of mesopelagic animals captured in Monterey Bay, California, ... -
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Development and Distribution of Larvae and Early Juveniles of the Commercial Lanternfish, Lampanyctodes hectoris (Gunther), Off the West Coast of Southern Africa with a Discussion of Phylogenic Relationships of the Genus
Lampanyctodes hectoris is a species of lanternfish which is becoming an important part of the pelagic fishery off South Africa. The Southwest Africa Pelagic Egg and Larval Survey has provided an abundance of larval specimens ... -
Ethological Isolating Mechanisms in Goodeid Fishes of the Genus Xenotoca (Cyprinodontiformes, Osteichthyes)
Although no natural hybrids are known, fertile laboratory hybrids were readily obtained from Xenotoca eiseni and X. melanosoma in forced crosses in which a conspecific mate was not available. In choice crosses with males ... -
Feeding Ecology of the Pit Sculpin, Cottus pitensis in Ash Creek, Califonia
The diet of the Pit sculpin, Cottus pitensis, consists mainly of benthic invertebrates and is similar to the diet of other stream-dwelling members of the genus Coitus. They feed at all hours but show a peak of feeding ... -
Fish Remains From an Archaeological Site at Rancho Carrillo on the Silver Strand, San Diego County, California
A collection of 170 fish remains from an archaeological site on the Silver Strand, immediately west of San Diego Bay. California, represents nine species, all of which are edible: Mustelus californicus, Sardinops sagax, ... -
Four New Pupfishes of the Genus Cyprinodon from Mexico, with a Key to the C. eximius Complex
The pupfishes (genus Cyprinodon) referable to the C. eximius complex comprise seven species that are restricted to, or had their origin in, the Chihuahuan Desert region of Mexico and adjacent parts of Texas and New Mexico. ... -
Hermaphroditism and Gonadal Teratoma-Like Growths in Sturgeon (Acipenser)
Two adult sturgeon (Acipenser oxyrhyncIuis and A. brevirostrum) from the Hudson River exhibited ovotestes. In the former, testicular and ovarian tissues were mostly separated", in the latter, intermingled. One ovotestis ... -
Influence of Tides and Waves on the Spawning Behavior of the Gulf of California Grunion, Leuresthes sardina (Jenkins and Evermann)
A preliminary analysis of 53 spawning runs of the Gulf grunion, Leuresthes sardina (Jenkins and Evermann) from 1968 to 1973 in the northern Gulf of California suggests that the initiation of a spawning run is strongly ... -
Life History of the Freshwater Lampreys, Okkelbergia aepyptera and Lampetra lamottenii (Pisces: Petromyzonidae), on the Delmarva Peninsula (East Cost, United States)
We studied the life history of the least brook lamprey, Okkelbergia aepyptera, and the American brook lamprey, Lampetra lamottenii, in Delaware. Observations of nest construction and spawning in O. aepyptera are presented. ... -
New Data on the Rare Alepocephalid Fish Photostylus pycnopterus
New data are given on the unique and infrequently reported mesopelagic alepocephalid fish Pholostylus pycnopterus. The second figure of the species and the first figure of its distribution are presented. The new information ... -
Numbers of Species and Faunal Resemblance of Marine Fishes in California Bays and Estuaries
Fish species numbers and surface area of 13 California bays and estuaries and the California continental shelf were positively correlated, and the slope (z) of the log-log regression was 0.21. Mouth width of bays was the ... -
Reproductive Products in Marine Food Webs
The role of gametes and reproductive products such as sperm, eggs and seeds will be generally discussed as a part of the food flux in terrestrial and marine food webs. Particularly important is the opposed role of reproductive ... -
The Significance of Coloration in Fishes of the Genus Hypsoblennius Gill
The social behavior and associated colorations of five Pacific species of Hypsoblennius were observed under field and laboratory conditions. Behavior patterns were classified as to their functional relationship to types ... -
Thermal and Respiratory Studies with Reference to Temperature and Oxygen Tolerance for the Unarmored Stickleback Gasterosteus aculeatus williamsoni Hubbs
The tolerance to high temperature and low oxygen concentration was measured for the unarmored stickleback. These fish have a critical thermal maximum (CTM) of 30.5 °C when acclimated to 8°C and a CTM of 34.6''C when ... -
Vertebral Variation in the Emerald Shiner Notropis atherinoides from the Ohio River: An Apparent Contradiction to "Jordan's Rule"
Vertebral numbers of the emerald shiner Notropis atherinoides collected from approximately 100-mile intervals of the Ohio River during 1957-1959 were analyzed using x-rays. Counts ranged from 36 to 42 with an overall mean ...