A Handbook of the Common Invertebrates of the Pacific Coast

Ecology ◽  
1940 ◽  
Vol 21 (1) ◽  
pp. 93-94 ◽  
Author(s):  
Ralph Buchsbaum
Keyword(s):  
Pacific Coast ◽  
The Pacific ◽  
The Common

Diet of common dolphinfish (Coryphaena hippurus) in the Pacific coast of Ecuador

2016 ◽  
Vol 97 (1) ◽  
pp. 207-213 ◽  
Author(s):  
José Luis Varela ◽  
Cristhian Ronald Lucas-Pilozo ◽  
Manuel María González-Duarte
Keyword(s):  
Pacific Coast ◽  
Feeding Habits ◽  
Dosidicus Gigas ◽  
Invertebrate Species ◽  
Coryphaena Hippurus ◽  
Important Prey ◽  
The Pacific ◽  
The Common ◽  
Hippocampus Hippocampus ◽  
High Degree

The diet and the feeding habits of the common dolphinfish (Coryphaena hippurus) in the Pacific coast of Ecuador was assessed by examining 320 stomachs of individuals ranging from 51 to 149 cm in total length. Fish was the predominant prey group in the diet (Alimentary Index, %AI = 95.39) followed by cephalopods (%AI = 4.13) and crustaceans (%AI = 0.48). Among the 17 prey items that make up the dolphinfish diet, the Exocoetidae family was the most important prey (%AI = 57.13), Dosidicus gigas being the most abundant invertebrate species (%AI = 7.65). Feeding patterns were evaluated using the graphing method of Amundsen, which suggested that this species shows a varying degree of specialization on different prey taxa. Thus, while some species were unimportant and rare (Hippocampus hippocampus, Lagocephalus lagocephalus, Gobiidae and Argonauta sp.), several dolphinfishes showed a high degree of specialization on Scombridae, Pleuroncodes planipes, Portunus xantusii and Opisthonema libertate. Size-related and temporal shifts in dietary composition were investigated by PERMANOVA analysis, which showed wide variations among size classes and periods of capture. The results of this study indicate that the common dolphinfish is an opportunistic feeder, which is capable of consuming a wide variety of schooling epipelagic organisms.

Descriptions of Acanthocephalus parallelcementglandatus (Echinorhynchidae) and Neoechinorhynchus (N.) pennahia (Neoechinorhynchidae) (Acanthocephala) from amphibians and fish in Central and Pacific coast of Vietnam, with notes on N. (N.) longnucleatus

2018 ◽  
Vol 63 (3) ◽  
pp. 572-585 ◽  
Author(s):  
Omar M. Amin ◽  
Richard A. Heckmann ◽  
Nguyen Van Ha
Keyword(s):  
Pacific Coast ◽  
South Coast ◽  
North Coast ◽  
Female Specimen ◽  
Male Specimen ◽  
The Pacific ◽  
Central Vietnam ◽  
The Common ◽  
Males And Females ◽  
Coast Of Vietnam

Abstract Three species of acanthocephalans are described from fishes caught in the Pacific coast off eastern Vietnam and from amphibians in the midlands in 2016: (1) Acanthocephalus parallelcementglandatus Amin, Heckmann, Ha, 2014 (Echinorhynchidae), described from 1 male specimen is now fully described from males and females collected from 2 species of amphibians, the similar frog Hylarana attigua Inger, Orlov, Darevsky and the odorous frog Odorrana sp. Fei, Ye, Huang (Ranidae) in Huong Thuy, Hue City and Chu Yang Sin Park, central Vietnam, respectively, as well as from the needlefish Tylosurus sp. Cocco (Belonidae) in Binh Thuân in the Pacific South. The allotype female is designated. Neoechinorhynchus (N.) pennahia Amin, Ha, Ha, 2011 described from 1 female specimen is now fully described from males and females collected from the Toli shad (Chinese herring), Tenualosa toli (Valenciennes) (Clupeidae) in the Pacific north coast off Haiphong. The allotype male is designated. One specimen of Neoechinorhynchus (Neoechinorhynchus) longnucleatus Amin, Ha, Ha, 2011 is also reported from the common ponyfish, Leiognathus equulus (Forssskål) (Leiognathidae) in the Pacific south coast of Nha Trang and its ecology briefly discussed.

scholarly journals Solid waste management in transition

2019 ◽  
pp. 37-45
Author(s):  
Maria Belova
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Pacific Coast ◽  
Solid Waste Management ◽  
Time Period ◽  
The Pacific ◽  
The Common ◽  
Common Problems ◽  
Cis Countries ◽  
The Eu

While constructing market economies on the ruins of the central planning systems from theeastern part of Germany to the Pacific coast of Russia, many countries have faced a number ofsimilar problems in the field of the solid waste management. But in the so called 'economiesin transition' these problems were treated in different ways,The group of the countries of Central and Eastern Europe on their way to the EU membershipadopted the European principles of the SWM. They were to find an adequate solution to theessential waste problems earlier and in the very limited time period, On the other hand, thecountries that now belong to the CIS, had somewhat put the problems of the SWM aside,therefore the process is in the most cases yet in its primary stage still. On their way to theeffective SWM, these countries often orient towards the European model as well, thoughhaving more freedom in adapting it to the national circumstances.The objective of the paper presented is to analyze the common problems of the countries intransition, evaluate the effectiveness of the European shaped solutions for the EU newmember states and highlight the positive and negative points to be aware of when reformingSWM in the CIS countries.

A Survey of the Parasites of Freshwater Fishes from the Mainland of British Columbia

1954 ◽  
Vol 11 (6) ◽  
pp. 673-708 ◽  
Author(s):  
Ralph V. Bangham ◽  
James R. Adams
Keyword(s):  
United States ◽  
British Columbia ◽  
Introduced Species ◽  
Pacific Coast ◽  
Freshwater Fishes ◽  
The United States ◽  
Parasite Fauna ◽  
Eastern Canada ◽  
The Pacific ◽  
The Common

Examination of 5,456 fish of 36 different species during 1951 and 1952 showed 4,925 or 90 per cent to be infected with at least one species of parasite. Records include fish from many lakes and streams of the Columbia and Fraser drainages and from a few localities in the Skeena, Peace, Liard and Skagit drainages. Parasites are recorded for each species of fish from each locality. The incidence of parasitism in the fish was comparable with that found by other surveys in eastern Canada and the United States. No major differences were found in the parasite faunas of the different river systems. Most of the common parasites were forms of circumpolar or general North American distribution. Several species of parasites described only from the Pacific coast area were common in certain hosts. Introduced species of fish showed very light infections with but few species of their normal parasites. The parasite fauna of fishes of this area appears to be less varied than in eastern and southern parts of the continent.

Distribution, Ecology, and Biology of the Salmonid Leech, Piscicola salmositica (Rhynchobdellae: Piscicolidae)

1965 ◽  
Vol 22 (5) ◽  
pp. 1175-1195 ◽  
Author(s):  
Clarence D. Becker ◽  
Max Katz
Keyword(s):  
Pacific Coast ◽  
Average Rate ◽  
Late Winter ◽  
Spawning Areas ◽  
The Pacific ◽  
Lotic Environment ◽  
Early Fall ◽  
Western Washington ◽  
The Common ◽  
Growth And Reproduction

Piscicola salmositica Meyer 1946 is widely distributed throughout the Pacific coast of North America from central British Columbia to northern California. Habitual ectoparasites of teleost fishes, these piscicolid leeches are ordinarily encountered in association with spawning adult salmon (genus Oncorhynchus) and other Salmonidae; the common name "salmonid leech" is therefore applied. Piscicola salmositica, in common with its teleost hosts, occurs in a characteristic lotic environment — streams with moderate to swift currents, generally low temperatures, high dissolved oxygen content, and gravelled beds.An annual cycle of abundance is evident. Salmonid leeches appear in early fall attached to their hosts as they ascend into hatchery and natural spawning areas. From late September to February, during a period of feeding, growth, and reproduction, the leech populations attain a great abundance. By late winter, subsequent to the death of their hosts, the leeches have become virtually nonexistent, apparently as a result of high mortality among the mature individuals, some downstream displacement, and limited prédation by sculpins (Cottus sp.). Only the small, immature leeches are believed to survive the summer and return attached to spawning salmon the following fall.During the period of abundance in Soos Creek, a western Washington study stream, the lengths of feeding leeches increased at a rate of 2–3 mm per week. Weight, in relation to length, was dependent upon the amount of salmon blood ingested.Reproduction of salmonid leeches in Soos Creek was correlated with low water temperatures. Breeding began in temperatures of about 12 C in October and continued during December and January even in temperatures dropping to 5 C. The leeches attained sexual maturity at a length of about 15 mm; mature individuals then copulated and fastened cocoons to the lower surfaces of stones in the streambed. Deposited cocoons were dark brown and averaged 1.4 by 1.2 mm. In the laboratory, the average rate of reproduction ranged from 1.6 to 2.5 cocoons per leech per day, but the largest leeches (23–30 mm) produced the greatest number of cocoons. One young leech developed in each cocoon, emerging at a length of about 5.3 mm. Complete embryonic development and hatching occurred in about 7 days.

THE CESTODA OF CANADIAN FISHES: I. THE PACIFIC COAST REGION

1932 ◽  
Vol 7 (1) ◽  
pp. 221-243 ◽  
Author(s):  
ROBERT ARNOLD WARDLE
Keyword(s):  
British Columbia ◽  
Pacific Coast ◽  
Pacific Salmon ◽  
Ophiodon Elongatus ◽  
The Pacific ◽  
The Common ◽  
Leptocottus Armatus ◽  
Coast Region

The results are given of a survey of the cestode fauna of 1,500 fishes representing 26 species common in the straits of Georgia, British Columbia. The survey yielded only five species of adult and four species of larval cestodes. No cestodes were found in members of the Pleuronectidae and Embiotocidae and—with one exception—the Scorpaenidae, and the rate of infection in other families was singularly low.The cestodarian species in Hydrolagus colliei is regarded as identical with the Atlantic Gyrocotyle urna Gr. et Wag. The common cestode of the Pacific salmon is regarded as Eubothrium oncorhynchi n. sp., closely allied with the European Eubothrium crassum Bloch. Bothriocephalus scorpii Müll. occurred in Leptocottus armatus and Hexagrammos decagrammus, Bothriocephalus occidentalis Linton in Leptocottus armatus and Sebastodes maliger, and Gilquinia tetrabothrius v. Ben. in Squalus sucklii; a redescription is given of the two latter species. The larval forms recorded were two species of Diphyllobothrium in Oncorhynchus, a species of Nybelinia in Ophiodon elongatus, and a species of Phyllobothrium in Oncorhynchus.

Sign in / Sign up

Export Citation Format

Share Document