scholarly journals The Red-fin Goby, Evorthodus minutus Meek & Hildebrand, 1928: a new record from Santa Cruz Island, Galapagos Archipelago

Check List ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 1-5
Author(s):  
Omar Valencia-Méndez ◽  
Dave Catania ◽  
Andrés López-Pérez
Keyword(s):  
Brackish Water ◽  
New Record ◽  
Central American ◽  
Range Extension ◽  
Eastern Pacific ◽  
Santa Cruz Island ◽  
Santa Cruz ◽  
Galapagos Archipelago ◽  
Brackish Water Species ◽  
Water Species

The Red-fin Goby, Evorthodus minutus Meek & Hildebrand, 1928, is a coastal brackish species which is commonly distributed from Sinaloa, Mexico to Guayaquil, Ecuador and particularly abundant in mangroves of Central American eastern Pacific. We report a new record of E. minutus collected from the Santa Cruz Island, part of the Galapagos Archipelago. This new record represents a range extension and is allows for a relevant discussion about colonization pathways in the equatorial eastern Pacific of a brackish-water species.

Macrostomum shenda and M. spiriger, two new brackish-water species of Macrostomum (Platyhelminthes: Macrostomorpha) from China

Zootaxa ◽  
2019 ◽  
Vol 4603 (1) ◽  
pp. 105
Author(s):  
FAN XIN ◽  
SI-YU ZHANG ◽  
YONG-SHI SHI ◽  
LEI WANG ◽  
YU ZHANG ◽  
...  
Keyword(s):  
Brackish Water ◽  
Phylogenetic Analyses ◽  
28S Rdna ◽  
Body Region ◽  
Rdna Sequences ◽  
Molecular Phylogenetic ◽  
28S Rdna Sequences ◽  
Pore Opening ◽  
Brackish Water Species ◽  
Water Species

In this study, two new brackish-water species of Macrostomum (M. shenda n. sp. and M. spiriger n. sp.) collected from Shenzhen, China, were described based on morphological, histological, and molecular phylogenetic analyses. Macrostomum shenda n. sp. differs from its congeners in the oblique and non-thickening distal opening of its narrow funnel-shaped stylet. In addition, its sperm have neither bristles nor brush, and are surrounded by an undulating membrane in the mid-body region. In M. spiriger n. sp., the stylet is spirally twisted. Its reproductive apparatus has a seminal bursal pore opening exteriorly. Results of the 18S and 28S rDNA phylogenetic analyses also support the establishments of these two new species. Moreover, the 18S and 28S rDNA sequences of some species within Macrostomum in previous studies have been revised to avoid ambiguity, while Macrostomum dongyuanensis Wang & Sun, 2015 was re-identified as a new record of M. quiritium Kolasa, 1973 from China.

Chaetoceros pauciramosus sp. nov. (Bacillariophyceae), a Widely Distributed Brackish Water Species in the C. lorenzianus Complex

Protist ◽  
2018 ◽  
Vol 169 (5) ◽  
pp. 615-631 ◽  
Author(s):  
Zuo Yi Chen ◽  
Nina Lundholm ◽  
Øjvind Moestrup ◽  
Janina Kownacka ◽  
Yang Li
Keyword(s):  
Brackish Water ◽  
Brackish Water Species ◽  
Water Species

Observations by Means of Cine Photography on the Behaviour of the Haptonema in Plankton Flagellates of the Class Haptophyceae

1971 ◽  
Vol 51 (1) ◽  
pp. 207-217 ◽  
Author(s):  
B. S. C. Leadbeater
Keyword(s):  
Fine Structure ◽  
Light Microscopy ◽  
Brackish Water ◽  
Type Species ◽  
Smooth Surface ◽  
Marine Species ◽  
Phaeocystis Globosa ◽  
The Third ◽  
Brackish Water Species ◽  
Water Species

INTRODUCTIONInitially the haptonema was recorded as a ‘little additional flagellum’ by Scherffel (1899) when he described Phaeocystis globosa. Similarly, the haptonema was referred to as the ‘third flagellum’ on the apparently tri-flagellate, brackish-water Prymnesium saltans Massart (Massart, 1920). Two further brackish water species of Prymnesium were described by Carter (1937) and all were characterized by a very short immobile ‘third appendage’. Lackey (1939) found a freshwater organism similar to Prymnesium but it possessed a ‘third flagellum’ several times the length of the true flagella. He re-corded that the third appendage was held out rigidly when the cell was at rest but during rapid swimming he was unable to see it and thought that this was due to an extremely rapid beat. He named his new organism Chrysochromulina parva and C. parva Lackey is now the type species of a considerable genus.Parke, Manton & Clarke (1955,1956,1958,1959) made a study of the light microscopy and fine structure of numerous marine species of Chrysochromulina. Their results showed that the ‘third flagellum’ differed in appearance and structure from that of a true flagellum and hence they decided to call this organelle a haptonema owing to its thread-like form and its ability to adhere to a smooth surface (Parke, Manton & Clarke, 1955). Their observations revealed that the haptonema could attach to a surface by an ‘adhesive tip’ and that the majority of species could coil their haptonemata into a helix and extend it again. In some species, e.g. C. strobilus (Parke, Manton & Clarke, 1959), the haptonema was usually tightly coiled whilst the cell was swimming.

scholarly journals The Distribution of Gammarus Species in Estuaries. Part I

1947 ◽  
Vol 27 (1) ◽  
pp. 1-52 ◽  
Author(s):  
G. M. Spooner
Keyword(s):  
Fresh Water ◽  
Brackish Water ◽  
Field Work ◽  
Bottom Fauna ◽  
Qualitative Composition ◽  
British Isles ◽  
Free Swimming ◽  
The Status ◽  
Brackish Water Species ◽  
Water Species

The work of which an account is here given was largely carried out from the autumn of 1937 to the spring of 1940, when it was interrupted by the war. In taking it up again (in July 1945) while, facilities for field work are still limited, the author feels it useful to publish results as they stand and indicate where further work is considered advisable.In examinations of the free-swimming bottom fauna of the Tamar and other estuaries, attention was inevitably drawn to the populations of Gammarus species, which make up the greater bulk of it. Before quantitative observations were planned, some interesting points came to light with regard to the qualitative composition of populations. This aspect lent itself more readily to study and, though byno means a new field for exploration, soon proved worth examining ingreater detail than previous workers had attempted.The broad fact of a replacement of one Gammarus species by another in passing up an estuary was well enough known, though exact knowledge for the British Isles only starts from the time when G. zaddachi Sexton was recognized as a regular member of the upper estuarine fauna of the Tay (Bassindale, 1933; Alexander, Southgate & Bassindale, 1935) and of the Deben (Serventy, 1935). This species proved to be the main brackish-water species overlapping with the marine G. locusta (L.) near the seaward end, and with the fresh-water G. pulex (L.) at the river end (or ‘head’) of the estuary. The status in estuaries of two other brackish-water species, G. duebeni Lillj. and G. chevreuxi Sexton, remained obscure.

Shellfishing Seasons in the Prehistoric Southeastern United States

1986 ◽  
Vol 51 (1) ◽  
pp. 21-37 ◽  
Author(s):  
Cheryl Claassen
Keyword(s):  
United States ◽  
Brackish Water ◽  
Gulf Coast ◽  
Negative Impact ◽  
Atlantic Coast ◽  
Southeastern United States ◽  
Early Spring ◽  
Warm Weather ◽  
Brackish Water Species ◽  
Water Species

Shellfish seasonality studies are summarized in this article, which presents the results of analysis at 94 sites in nine southeastern states. All but six of the sites are middens or shell lenses composed of marine or brackish water species (M. mercenaria, R. cuneata, D. variabilis). Shells in those sites along the Atlantic coast were collected from fall to early spring, while shells in sites on the Gulf coast were collected during early spring to summer. Freshwater shellfish middens in four states have been investigated and consistently indicated collection during warm weather. The uniformity of the results indicates that the variation in species used, techniques used, sample sizes, or geography have no noticeable negative impact on the usefulness of the results. It is argued that shellfish were a staple in the diet of many prehistoric horticultural peoples in spite of the fact that they are a dietary supplement for modern hunters and collectors.

scholarly journals Southward range extension of the goldeye rockfish, Sebastes thompsoni (Actinopterygii: Scorpaeniformes: Scorpaenidae), to northern Taiwan

2021 ◽  
Vol 51 (2) ◽  
pp. 153-158
Author(s):  
Tak-Kei Chou ◽  
Chi-Ngai Tang
Keyword(s):  
Northern Hemisphere ◽  
New Record ◽  
Cold Water ◽  
Range Extension ◽  
Reported Study ◽  
Water Species ◽  
Cold Water Species ◽  
Northern Taiwan

The goldeye rockfish, Sebastes thompsoni (Jordan et Hubbs, 1925), is known as a typical cold-water species, occurring from southern Hokkaido to Kagoshima. In the presently reported study, a specimen was collected from the local fishery catch off Keelung, northern Taiwan, which represents the first specimen-based record of the genus in Taiwan. Moreover, the new record of Sebastes thompsoni in Taiwan represented the southernmost distribution of the cold-water genus Sebastes in the Northern Hemisphere.

Two New Brackish-Water Species of Macrostomum (Platyhelminthes: Macrostomorpha) from China and Their Phylogenetic Positions

2021 ◽  
Vol 38 (3) ◽  
Author(s):  
Siyu Zhang ◽  
Yongshi Shi ◽  
Zicheng Zeng ◽  
Fan Xin ◽  
Li Deng ◽  
...  
Keyword(s):  
Brackish Water ◽  
Brackish Water Species ◽  
Water Species
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