Reef fish fauna in the coastal waters of Vietnam

2020 ◽  
Vol 50 (6) ◽  
Author(s):  
Long Van Nguyen ◽  
Dat Xuan Mai
Keyword(s):  
2018 ◽  
Vol 30 (1) ◽  
pp. 36-45
Author(s):  
Chung Il Lee ◽  
Hea Kun Jung ◽  
Soon Man Kwon ◽  
Moon Hee Han ◽  
Kang Su Seol ◽  
...  
Keyword(s):  

2018 ◽  
Vol 69 (10) ◽  
pp. 1496
Author(s):  
David R. Schiel ◽  
Tony Ayling ◽  
Michael J. Kingsford ◽  
Christopher N. Battershill ◽  
J. Howard Choat ◽  
...  

Marine reserves exhibit increases in targeted fish species, but long-term effects on biodiversity are poorly understood. Factors other than reserve status may affect decadal changes, including environmental change. We examined the fish fauna at the iconic Poor Knights Islands over 4 decades (1974–2016) before and after implementation of a no-take marine reserve in 1998. We document a substantial increase in commercially and recreationally targeted Chrysophrys auratus, which was virtually absent before 1994 but by 2016 had reached up to 11 fish per 500m2 (220 per hectare). There were also large changes to the fish community, including the decline of subtropical and coastal wrasses, some species with no change and others that increased significantly. Many declines occurred >20 years before the arrival of abundant C. auratus, suggesting the changes do not represent a trophic cascade. Furthermore, this normally benthic-feeding fish has adopted a mid-water foraging behaviour targeting planktivorous fish. The increase in C. auratus appears to be linked both to reserve status and catch regulations in the wider region. Overall, the data point to long-term environmental fluctuations from the late 1970s having a negative effect on the abundance of more than half the reef fish species at these islands.


2009 ◽  
Vol 2 (1) ◽  
pp. 90-98 ◽  
Author(s):  
David E. Galván ◽  
Leonardo A. Venerus ◽  
Alejo J. Irigoyen

2020 ◽  
Vol 25 (2(47)) ◽  
pp. 113-139
Author(s):  
С. М. Снігірьов ◽  
В.В. Заморов ◽  
Ю.В. Караванский ◽  
В. З. Пицык ◽  
А.П. Куракин ◽  
...  
Keyword(s):  

1994 ◽  
Vol 45 (4) ◽  
pp. 665 ◽  
Author(s):  
CA Gray ◽  
NM Otway

Variations in assemblages of demersal fishes occurring in different depths of water (30, 60 and 100 m) on the inner continental shelf off Sydney are described. Assemblages comprised a diverse and abundant ichthyofauna; many species were of economic importance. Classification analyses showed that assemblages of demersal fishes at 30 and 60 m depth were most similar to each other and that they consistently differed from those at 100 m depth. This difference may reflect a change in the demersal ichthyofauna from a nearshore to an offshore assemblage. The depth-delineated differences between assemblages agree with those found in similar studies on demersal fishes in coastal waters elsewhere. The distributions and relative abundances of many species differed markedly among depths, but such differences were not always consistent between localities or throughout time. Despite this, some species showed some temporal affinity with a particular site and/or depth. The study confirmed spatial and temporal variabilities in the demersal fish fauna in coastal waters off Sydney; such heterogeneity must be considered when future studies are designed.


Zootaxa ◽  
2009 ◽  
Vol 2298 (1) ◽  
pp. 64-68 ◽  
Author(s):  
ALFONSO AGUILAR-PERERA ◽  
ARMIN TUZ-SULUB

The Mardi Gras wrasse, Halichoeres burekae, is a planktivorous fish considered to be endemic to the Gulf of Mexico and recently described. It was previously known only from the Flower Gardens Banks National Marine Sanctuary (USA) and Veracruz, (Mexico). We recorded Halichoeres burekae (initial female [50–70 mm TL] and terminal male [60–90 mm TL] phases) in the Alacranes Reef, a reef platform located off northern Yucatan Peninsula, southern Gulf of Mexico. This fish is relatively common in shallow (2 m) and deep (25 m) waters in the Alacranes Reef, where it forms small (15 individuals) to large (200 individuals) aggregations. This record represents a range extension for H. burekae and indicates a general lack of knowledge about the southern Gulf of Mexico reef fish fauna.


2019 ◽  
Vol 46 (4) ◽  
pp. 723-733 ◽  
Author(s):  
Erwan Delrieu‐Trottin ◽  
Laura Brosseau‐Acquaviva ◽  
Stefano Mona ◽  
Valentina Neglia ◽  
Emily C. Giles ◽  
...  

2019 ◽  
Author(s):  
Erwan Delrieu-Trottin ◽  
Nicolas Hubert ◽  
Emily C. Giles ◽  
Pascaline Chifflet-Belle ◽  
Arnaud Suwalski ◽  
...  

AbstractElucidating demographic history during the settlement of ecological communities is crucial for properly inferring the mechanisms that shape patterns of species diversity and their persistence through time. Here, we used genomic data and coalescent-based approaches to elucidate for the first time the demographic dynamics associated with the settlement by endemic reef fish fauna of one of the most remote peripheral islands of the Pacific Ocean, Rapa Nui (Easter Island). We compared the demographic history of nine endemic species in order to explore their demographic responses to Pleistocene climatic fluctuations. We found that Rapa Nui endemic species share a common demographic history as signatures of population expansions were retrieved for almost all of the species studied here, and synchronous demographic expansions initiated during the last glacial period were recovered for more than half of the studied species. These results suggest that eustatic fluctuations associated with Milankovitch cycles have played a central role in species demographic histories and in the final stage of the community assembly of many Rapa Nui reef fishes. Specifically, sea level low stands resulted in the maximum reef habitat extension for Rapa Nui endemic species; we discuss the potential role of seamounts in allowing endemic species to cope with Pleistocene climatic fluctuations, and we highlight the importance of local historical processes over regional ones. Overall, our results shed light on the mechanisms by which endemism arises and is maintained in peripheral reef fish fauna.


2018 ◽  
Vol 18 (2) ◽  
pp. 166-177
Author(s):  
Le Thi Thu Thao ◽  
Vo Van Quang ◽  
Nguyen Phi Uy Vu

Three surveys were carried out in May, August and December 2014 at 7 sampling location to determine species composition of fish fauna in the coastal waters of Quang Ngai province (the Central Vietnam). A total number of 178 species of fishes were identified belonging to 125 genera, 68 families and 13 orders. Analysis of community structure of fish fauna showed that Perciformes order was the most popular, making up 71.9%; Tetraodontiformes (8.4%); Pleuronectiformes (5.6%). Serranidae family was the most abundant with 14 species, making up 7.9% of the total number of species; Carangidae: 12 species (6.7%); Lutjanidae, Gobiidae had the same number of species with 9 species (5.1%); Scombridae: 7 species (3.9%); Soleidae: 6 species (3.4%); Haemulidae, Mullidae, Tetraodontidae: 5 species (2.8%);... Cluster analysing based on the Bray-Curtis similarity index of nine fish faunas (Thai Binh, Son Tra, Thu Bon, Quang Nam, Nha Phu-Binh Cang, Ben Tre and Tra Vinh) showed that fish composition of the coastal estuaries of Tra Vinh and Ben Tre had the highest similarity (80%), subsequently fish fauna of Quang Ngai had similarity with that of Nha Phu-Binh Cang (39%), Quang Ngai and Quang Nam (42%), Quang Nam and Nha Phu-Binh Cang (41%), Quang Nam and Son Tra (38%), Thai Binh and Ben Tre (37%), Quang Ngai and Son Tra (36%). The result was also classified into two distinct groups of 7 fish faunas: Group 1-Tra Vinh, Ben Tre and Thai Binh; group 2-Quang Ngai, Quang Nam, Nha Phu-Binh Cang and Son Tra. The species richness (Margalef’s index) of Quang Ngai (34.2) was less abundant than other areas, the highest species richness belonged to Tra Vinh (38.2), Thai Binh (38.0), Quang Nam (37.8), Nha Phu-Binh Cang (35.1), Son Tra (30.9), Ben Tre (29.4). The diversity of species composition according to the level taxa in each region showed the characteristic of each fish fauna.


Author(s):  
Jaime Garzón F. ◽  
Arturo Acero P.

A comparison of reef fish fauna from the Cartagena (Rosario and San Bernardo islands) and Santa Marta (including Tayrona National Park) regions, Colombian Caribbean, is presented. This comparison is based on more than Ave years of sampling in Santa Marta and on 76 hours of underwater observations and collection in the islands around Cartagena. It has been found that many species present in the Cartagena region do not exist or have reduced populations in the Santa Marta reefs, but are present in the Bahama Islands, which are more than 8 times farther from Cartagena than Santa Marta. Such factors as the relative environmental instability, influence of turbid currents and less developed coral reefs, may be acting as limiting conditions for the development of these fishes in the Santa Marta region. The distribution in Venezuela of the species considered is also analyzed; there is a similar phenomenon to that of the Colombian Caribbean, probably produced by the influence of upwelling and turbid waters on some coastal areas.


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