scholarly journals Multi-level biological responses in Ucides cordatus (Linnaeus, 1763) (Brachyura, Ucididae) as indicators of conservation status in mangrove areas from the western atlantic

2016 ◽  
Vol 133 ◽  
pp. 176-187 ◽  
Author(s):  
Luis Felipe de Almeida Duarte ◽  
Caroline Araújo de Souza ◽  
Caio Rodrigues Nobre ◽  
Camilo Dias Seabra Pereira ◽  
Marcelo Antonio Amaro Pinheiro
Keyword(s):  
Conservation Status ◽  
Western Atlantic ◽  
Ucides Cordatus ◽  
Biological Responses ◽  
Multi Level

scholarly journals Marine ichthyofauna of Santa Catarina Island, Southern Brazil: checklist with comments on the species

2019 ◽  
Vol 19 (3) ◽  
Author(s):  
Gisela Costa Ribeiro ◽  
André Pereira Cattani ◽  
Mauricio Hostim-Silva ◽  
Leandro Clezar ◽  
Ana Carolina dos Passos ◽  
...  
Keyword(s):  
Conservation Status ◽  
Species Distributions ◽  
Marine Fishes ◽  
Brazilian Coast ◽  
Coastal Environments ◽  
Southern Brazil ◽  
Santa Catarina ◽  
Western Atlantic ◽  
The Caribbean ◽  
Brazilian Province

Abstract: This study aimed to present a checklist of marine fishes from coastal environments of the Island of Santa Catarina, including comments on the zoogeographic affinities, conservation status of each species, and functional groups. A total of 169 fish species belonging to 30 orders and 58 families were recorded. The most speciose families were Sciaenidae, Carangidae and, Engraulidae, representing 26,62% of the recorded species. Anchoa was the richest genus, followed by Sphoeroides and Cynoscion. Most of the species have their distribution limited to the western Atlantic, and two groups of fish were distinguished according to the species distributions: 1) species occurring in the Caribbean and in the Brazilian Province; and 2) Transatlantic species. Thirteen species are critically threatened, 10 are overexploited on the Brazilian coast, and 2 are threatened by extinction. Most of the species are either marine stragglers or marine migrants, and most of them are zoobenthivores, piscivores, or both.

Genetic diversity among populations of the Western Atlantic mangrove crab Ucides cordatus (Linnaeus, 1763) (Decapoda: Brachyura: Ocypodidae): evidence for panmixia and useful data for future management and conservation

2019 ◽  
Vol 39 (4) ◽  
pp. 386-395 ◽  
Author(s):  
Raquel C Buranelli ◽  
Darryl L Felder ◽  
Fernando L Mantelatto
Keyword(s):  
Sudden Expansion ◽  
Current Evidence ◽  
Restricted Gene Flow ◽  
Demographic Expansion ◽  
Western Atlantic ◽  
Ucides Cordatus ◽  
Mangrove Crab ◽  
Population Demographic ◽  
Management And Conservation ◽  
Future Management

Abstract The mangrove crab Ucides cordatus (Linnaeus, 1763) is a keystone species in mangroves, and recent changes in population sizes have been attributed primarily to overharvest, selective capture, and loss of habitat due to destruction of mangroves. We analyzed genetic variability and phylogeographic pattern among populations of U. cordatus along the western Atlantic coast in order to document levels of genetic differentiation, aiming to provide data to be used in future management and conservation strategies. MtDNA cytochrome oxidase I (COI) was analyzed and compared among populations. We computed a haplotype network, haplotype and nucleotide diversities, index of fixation, Mantel test, analysis of molecular variance (AMOVA), neutrality tests, and pairwise mismatch distributions under the sudden expansion model of demographic expansion; Maximum likelihood phylogenetic reconstruction was also undertaken for the haplotypes found. We found no geographic structure and no significant indication for restricted gene flow between populations from sites along a distance of 12,000 km, indicating that sampled individuals currently represent a single panmictic population. Demographic results revealed demographic expansion along the evolutionary history of U. cordatus, probably related to climatic biogeographic events. Although there is no current evidence of any substantial genetic break or of demographic reduction between the western Atlantic populations that we investigated, the genetic signal of regional population depletion warrants future monitoring in the course of resource management.

Molecular evidence supporting the expansion of the geographical distribution of the Brazilian cownose ray Rhinoptera brasiliensis (Myliobatiformes: Rhinopteridae) in the western Atlantic

Zootaxa ◽  
2017 ◽  
Vol 4341 (4) ◽  
pp. 593 ◽  
Author(s):  
PAOLA PALACIOS-BARRETO ◽  
VANESSA P. CRUZ ◽  
FAUSTO FORESTI ◽  
BIANCA DE S. RANGEL ◽  
MANUEL URIBE-ALCOCER ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Conservation Status ◽  
Nuclear Gene ◽  
Large Degree ◽  
Molecular Evidence ◽  
Western Atlantic ◽  
Cownose Ray ◽  
Distribution Ranges ◽  
Northern Portion ◽  
The Caribbean

The genus Rhinoptera is composed of eight species widely distributed in tropical, subtropical and temperate coastal waters, which inhabit bays, estuaries and river mouths. Cownose ray Rhinoptera bonasus has been reported to inhabit the Western Atlantic including the Gulf of Mexico and the Caribbean, whereas the Brazilian cownose ray R. brasiliensis has been considered endemic to the coast of Brazil. Recent reports of R. brasiliensis in the Gulf of Mexico bring about the question of whether the species has a wider range than previously reported. Here, the mitochondrial genes COI, Cytb, NADH2 and the nuclear gene RAG1 were used to distinguish among species and to confirm the presence of R. brasiliensis in the Gulf of Mexico. R. brasiliensis specimens collected along the southern Gulf of Mexico showed a remarkable genetic and morphological affinity when compared with R. brasiliensis specimens from Brazil, supporting the presence of the species in Mexico (from Veracruz through Campeche) and providing evidence that its distribution ranges from Brazil to the Caribbean Sea and the Gulf of Mexico. Both species overlap geographically to a large degree, leading to a reassessment of their conservation status. Our results also show that R. bonasus distribution in the Gulf of Mexico may be restricted to the northern portion, in US waters. 

scholarly journals What do we know about Anisotremus moricandi (Teleostei: Haemulidae), an endangered reef fish?

2007 ◽  
Vol 7 (2) ◽  
pp. 317-319
Author(s):  
Thelma Lúcia Pereira Dias
Keyword(s):  
Reef Fish ◽  
Small Groups ◽  
Conservation Status ◽  
General Information ◽  
Western Atlantic ◽  
Espírito Santo ◽  
Rocky Reefs ◽  
Espirito Santo

This article provides general information on habitat, behavior, and conservation status of Anisotremus moricandi and reinforces its distribution to the western Atlantic. The species inhabits rocky reefs with low coralline overgrowth and it is found in reef crevices in small groups or solitary individuals. The distribution of A. moricandi seems to be discontinuous occurring in the coasts of Panama (Caribbean side), Aruba, Colombia, Orchila Island (Venezuela) and in Brazil (from Ceará State to Espírito Santo State).

scholarly journals Checklist of the fish fauna of the Araçá Bay, São Sebastião Channel, northern coast of São Paulo, Brazil

Check List ◽  
2016 ◽  
Vol 12 (6) ◽  
pp. 2004 ◽  
Author(s):  
Rafael Andrei Lamas ◽  
Carmen Lúcia Del Bianco Rossi-Wongtschowski ◽  
Riguel Feltrin Contente
Keyword(s):  
Fish Species ◽  
Native Species ◽  
Conservation Status ◽  
High Tide ◽  
Fish Fauna ◽  
Sao Paulo ◽  
Tide Pool ◽  
Northern Coast ◽  
São Paulo ◽  
Western Atlantic

This paper presents for the first time a checklist of the fish fauna of Araça Bay, São Sebastião Channel, northern coast of São Paulo state, Brazil. Fishes were sampled in five surveys from October 2012 to February 2014 using nine different types of sampling gear during high tide. Tide pool fishes were also sampled in four surveys from March to October 2014. Geographic distribution and conservation status of each species are reported. A total of 126 species was recorded in Araçá Bay, including two non-native species and new records in the São Sebastião region for 16 species. The fish species richness found in Araçá Bay was greater than the previously recorded for the São Sebastião Channel and other adjacent areas. Most of the Araçá fish species show a wide distribution along the western Atlantic Ocean (32%). Few species are included in the international (29%) and Brazilian (3.3%) official lists of threatened species.

scholarly journals Biological responses in gills and hepatopancreas of Ucides cordatus (Crustacea, Decapoda, Ocypodidae) as indicative of environmental contamination in mangrove areas in Maranhão State, Brazil

2020 ◽  
Vol 48 (2) ◽  
pp. 226-236 ◽  
Author(s):  
Wanda Batista de Jesus ◽  
Suelen Rosana Sampaio De Oliveira ◽  
Ticianne De Sousa de Oliveira Mota Andrade ◽  
Jucimary Braga Machado Sousa ◽  
Débora Batista Pinheiro-Sousa ◽  
...  
Keyword(s):  
B Cells ◽  
Environmental Contamination ◽  
Reference Area ◽  
Biometric Data ◽  
Ucides Cordatus ◽  
Histological Technique ◽  
Biological Responses ◽  
Port Area ◽  
Standard Deviations

This study aimed to identify alterations in gills and hepatopancreas of the crab Ucides cordatus as indicative of environmental contamination in mangrove areas subject to chemical effluents from port activities in Maranhão, Brazil. Samples of gills and hepatopancreas were removed from each animal and fixed in Davidson's solution until the procedure of histological technique. The biometric data (means and standard deviations) of the specimens collected in the study areas indicated that the crabs in the reference area are significantly (P < 0.05) higher and heavier than the crabs collected in the potentially impacted area (port area). Gill alterations (rupture of pilaster cells, dilation of the marginal channel, cuticle rupture and necrosis) and hepatopancreas alterations (abnormal lumen, vacuolized B cells, pycnotic nuclei and necrosis) were significantly (gbn < 0.05) more frequent in crabs collected in the port area than crabs collected in the reference area. These data indicate that the health of crabs is compromised due to the pollutants present in the mangroves that surround the port area in São Marcos’ Bay.

scholarly journals Morphological sexual maturity of the marine crab Xanthodius parvulus at the State Marine Park Laje de Santos, São Paulo, Brazil

2021 ◽  
Vol 111 ◽  
Author(s):  
Isabela Chellegatti ◽  
Rogério Caetano da Costa ◽  
Antonio L. Castilho ◽  
Isabela R. R. Moraes ◽  
Daphine R. Herrera ◽  
...  
Keyword(s):  
Sexual Maturity ◽  
Conservation Status ◽  
Marine Reserve ◽  
Carapace Width ◽  
Sao Paulo ◽  
Mature Stage ◽  
Brazilian Coast ◽  
Reproductive Pattern ◽  
São Paulo ◽  
Western Atlantic

ABSTRACT The marine crab Xanthodius parvulus (Fabricius, 1793) is naturally distributed in the Western Atlantic, being commonly found in the northeastern Brazilian coast. However, this species has been also recorded in the southeastern coast, especially in São Paulo State, on islands located close to harbors, which are becoming a place of occurrence for exotic species. This study aimed to estimate the morphological sexual maturity (relative growth) of X. parvulus the functional biological patterns of the species in a No-take marine reserve. The crabs were sampled at the Marine State Park of Laje de Santos, an important protected area from São Paulo that is located close to the largest Brazilian harbor, Santos, using an artificial substrate and active search methods (scuba diving). The morphological sexual maturity of females was estimated in 7.28 mm, according to the Abdomen Width vs. Carapace Width relationship, while for males this value was 8.83 mm based on the Gonopod Length vs. Carapace Width relationship, the females presented an increase in abdominal growth, even during the mature stage in order to achieve higher reproductive success, since the abdominal structure is used to protect the embryos. The Gonopod Length vs. Carapace Width relationship showed that males copulate with different sized females, since a non-exaggerated growth of the gonopods keeps them adequate to the size of the female genital pore, i.e., juveniles exhibited negative allometry and adults presented isometry. Thus, estimating the size of the sexual maturity of a species requires the development of a model to acknowledge its biological and reproductive pattern, being an important tool to increase the knowledge about the behavior of this species and one of the parameters to evaluate its conservation status.

Occurrence and biogeographic significance of Heliaster (Echinodermata: Asteroidea) from the Pliocene of southwest Florida

1988 ◽  
Vol 62 (01) ◽  
pp. 126-132 ◽  
Author(s):  
Douglas S. Jones ◽  
Roger W. Portell
Keyword(s):  
Central American ◽  
Eastern Pacific ◽  
Whole Body ◽  
Marine Fauna ◽  
Western Atlantic ◽  
Southwest Florida ◽  
Extant Species ◽  
Geologic Record ◽  
Central American Isthmus

Whole body asteroid fossils are rare in the geologic record and previously unreported from the Cenozoic of Florida. However, specimens of the extant species,Heliaster microbrachiusXantus, were recently discovered in upper Pliocene deposits. This marks the first reported fossil occurrence of the monogeneric Heliasteridae, a group today confined to the eastern Pacific. This discovery provides further non-molluscan evidence of the close similarities between the Neogene marine fauna of Florida and the modern fauna of the eastern Pacific. The extinction of the heliasters in the western Atlantic is consistent with the pattern of many other marine groups in the region which suffered impoverishment following uplift of the Central American isthmus.

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