scholarly journals IV.—The Eggs and Larvæ of Teleosteans

1887 ◽  
Vol 33 (1) ◽  
pp. 97-136 ◽  
Author(s):  
J. T. Cunningham

The purpose of this memoir is (1) to make known a number of drawings and descriptions of the eggs, embryos, and larvæ of the species of Teleosteans which I have been able to study at the Scottish Marine Station; (2) to review as comprehensively as possible what is known at the present time concerning the structure of the embryos and larvæ of the species of Teleosteans, and to discover what features are common to each family or each order; (3) to discuss the changes which take place in the protoplasm and nucleus of the mature ovum immediately after it is shed, both when fertilised and when unfertilised. The ova of the following species were taken directly from the parent fish, and artificially fertilised. The necessary operations were carried out, in some cases by myself, on board fishing boats—usually steam trawlers from Granton. In many instances I did not myself go out in the boats, but the ova were obtained and brought to me at the laboratory by Alexander Turbyne, keeper of the station. But in every case there is no uncertainty as to the species of the fish from which the ova were taken; if there was any doubt, specimens of the parent fish were brought with the ova.

The Scottish Marine Biological Association has a historical link with the Royal Society through the Challenger Expedition which took place in response to representations by the Council of the Society. Its inspirer and director was Professor Charles Wyville Thomson of Edinburgh, and the administrative centre for the working out of its results was situated in that city. After Wyville Thomson’s premature death in 1882 his place was taken by the senior naturalist of the expedition John Murray. In addition to his work as Head of the Challenger Office, Murray, with the financial aid of many personal friends, founded the small Scottish Marine Station built at the margin of a submerged quarry at Granton and having as tender a small yacht the Medusa , fully equipped with sounding and dredging apparatus, and a floating barge laboratory the Ark . The activities of the station under its superintendent J. T. Cunnings ham were directed specially towards fishery problems—the spawning grounds of the herring, the pelagic eggs and larvae of the other food fishes, and that special enemy of the line fishermen, the hagfish Myxine .


2015 ◽  
Vol 42 (1) ◽  
pp. 165-170
Author(s):  
P. G. Moore

Three letters from the Sheina Marshall archive at the former University Marine Biological Station Millport (UMBSM) reveal the pivotal significance of Sheina Marshall's father, Dr John Nairn Marshall, behind the scheme planned by Glasgow University's Regius Professor of Zoology, John Graham Kerr. He proposed to build an alternative marine station facility on Cumbrae's adjacent island of Bute in the Firth of Clyde in the early years of the twentieth century to cater predominantly for marine researchers.


2013 ◽  
Vol 40 (1) ◽  
pp. 45-51 ◽  
Author(s):  
P. G. Moore

The Lochbuie Marine Institute on the Isle of Mull (Inner Hebrides), established in 1886, had links with the short-lived National Fish Culture Association of Great Britain and Ireland (inaugurated 1882). Its amalgamation with the Scottish Marine Station at Granton (Edinburgh) was informally suggested in 1887, but it ceased to exist about this time.


2020 ◽  
Vol 47 (1) ◽  
pp. 63-75
Author(s):  
P. G. Moore

John Robertson Henderson was born in Scotland and educated at the University of Edinburgh, where he qualified as a doctor. His interest in marine natural history was fostered at the Scottish Marine Station for Scientific Research at Granton (near Edinburgh) where his focus on anomuran crustaceans emerged, to the extent that he was eventually invited to compile the anomuran volume of the Challenger expedition reports. He left Scotland for India in autumn 1885 to take up the Chair of Zoology at Madras Christian College, shortly after its establishment. He continued working on crustacean taxonomy, producing substantial contributions to the field; returning to Scotland in retirement in 1919. The apparent absence of communication with Alfred William Alcock, a surgeon-naturalist with overlapping interests in India, is highlighted but not resolved.


Author(s):  
Tatiana Vasilievna Pomogaeva ◽  
Aliya Ahmetovna Aseinova ◽  
Yuriy Aleksandrovich Paritskiy ◽  
Vjacheslav Petrovich Razinkov

The article presents annual statistical data of the Caspian Research Institute of Fishery. There has been kept track of the long term dynamics of the stocks of three species of Caspian sprat (anchovy, big-eyed kilka, sprat) and investigated a process of substituting a food item of sprats Eurytemora grimmi to a small-celled copepod species Acartia tonsa Dana. According to the research results, there has been determined growth potential of stocks of each species. Ctenophoran-Mnemiopsis has an adverse effect on sprat population by eating fish eggs and larvae. Ctenophoram - Mnemiopsis is a nutritional competitor to the full-grown fishes. The article gives recommendations on reclamation of stocks of the most perspective species - common sprat, whose biological characteristics helped not to suffer during Ctenophoram outburst and to increase its population during change of the main food item. Hydroacoustic survey data prove the intensive growth of common sprat biomass in the north-west part of the Middle Caspian. According to the results of the research it may be concluded that to realize the volumes of recommended sprat catch it is necessary to organize the marine fishery of common sprat at the Russian Middle Caspian shelf.


Author(s):  
Peter Munk ◽  
Jørgen G. Nielsen

This chapter describes the taxonomy of fish eggs and larvae. Most fish eggs and larvae are planktonic, and are commonly found in plankton net tows. Collectively these fish stages are referred to as ichthyoplankton. The chapter covers their life cycle, ecology, and general morphology. It includes a section that indicates the systematic placement of the taxon described within the tree of life, and lists the key marine representative illustrated in the chapter (usually to genus or family level). This section also provides information on the taxonomic authorities responsible for the classification adopted, recent changes which might have occurred, and lists relevant taxonomic sources.


2019 ◽  
Vol 128 (1) ◽  
pp. 107-121 ◽  
Author(s):  
Katherine E Dale ◽  
M Timothy Tinker ◽  
Rita S Mehta

Abstract The geographical range of many marine species is strongly influenced by the dispersal potential of propagules such as eggs and larvae. Here, we investigate morphological diversity and the effect of body shape on geographical range of leptocephali, the unique, laterally compressed larvae of eels (order Anguilliformes). We used phylogenetically informed analyses to examine the morphological variation of larvae for 17 Eastern Pacific eel species from three adult habitats. We also investigated whether morphological traits of leptocephali could predict larval latitudinal range, hypothesizing that body shape may influence passive dispersal via currents. We found that no two species shared the same multivariate growth trajectories, with the size and scaling of pectoral fin length and snout-to-anus length being particularly variable. Larvae with longer relative predorsal and snout-to-anus lengths at median sizes exhibited wider larval geographical ranges. Body aspect ratio and maximum body length at metamorphosis, two traits we hypothesized to be important for passive transport, were not significant predictors of maximal larval range. We discovered an increase in phylogenetic signal over larval development as eels approach metamorphosis, potentially due to similar selective pressures between related species (such as juvenile habitat or adult morphology). Lastly, we conclude that larval body shape is probably influenced by adult habitat and adult morphology.


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