scholarly journals Distribution, Period of Gravidity, and Host Identification for the Narrow Pigtoe Mussel

2020 ◽  
pp. 0000-0000
Author(s):  
Kathryn M Holcomb ◽  
Jordan M Holcomb ◽  
Sandra C Pursifull ◽  
John R Knight
Keyword(s):  
Fish Species ◽  
Yellow River ◽  
Conservation Status ◽  
Freshwater Mussel ◽  
Distribution Data ◽  
Cyprinella Venusta ◽  
Status Assessment ◽  
Hydrologic Unit Code ◽  
Gravid Females ◽  
Fish Hosts

The narrow pigtoe Fusconaia escambia is a freshwater mussel found only in the Escambia and Yellow river basins in northwest Florida and southern Alabama. It is listed as threatened under the U.S. Endangered Species Act. Like other freshwater mussels (Unionidae), its life cycle involves a larval stage (i.e., glochidial) in which most species are obligate parasites on the gills or fins of fishes. Knowledge of life history, population demographics, population genetics, and threats for the narrow pigtoe is lacking throughout its range, which impedes conservation of this species. Therefore, our objectives were to 1) compare historical and current distribution data using a conservation status assessment map, 2) determine period of gravidity, and 3) identify fish hosts. We used a conservation status assessment map to examine spatial and temporal changes in narrow pigtoe distribution and the possibility that the species has been extirpated from a subbasin (i.e., Hydrologic Unit Code level 10 watershed boundary; U.S. Geological Survey National Hydrography Dataset). Period of gravidity for the narrow pigtoe was determined by examining the gills of mussels in the field, and peak gravidity was considered to be the month in which the greatest number of gravid females was encountered. Fish hosts were determined by infecting individuals of 18 fish species with glochidia in a laboratory setting. Overall, the narrow pigtoe appears to be maintaining stable populations in Florida, but too few surveys have been conducted in Alabama subbasins for us to fully assess its status throughout its range. Peak months of gravidity were May-July, with the greatest percent of gravid females observed in May, although they were observed as early as 9 March and as late as 25 October. Nine fish species from five genera were identified as hosts for narrow pigtoe, with Blacktail Shiner Cyprinella venusta and Weed Shiner Notropis texanus consistently producing the greatest number of viable juvenile mussels. Host and gravidity findings from this study will be useful if propagation efforts become necessary for conservation of the narrow pigtoe.

scholarly journals Re-discovery of Catasetum mojuense (Orchidaceae: Catasetinae), a poorly-known Amazonian species

2020 ◽  
Vol 15 (4) ◽  
pp. 447-452
Author(s):  
Felipe Fajardo Villela Antolin Barberena ◽  
Deivid Lucas de Lima da Costa ◽  
José Antônio Lima Rocha Junior
Keyword(s):  
Geographic Distribution ◽  
Conservation Status ◽  
The State ◽  
Critically Endangered ◽  
Type Locality ◽  
Morphological Description ◽  
Distribution Data ◽  
Main Concern ◽  
Status Assessment

The re-discovery of Catasetum mojuense A.T. Oliveira & J.B.F. Silva (Orchidaceae), an Amazonian species described in 1999 from the State of Pará, Brazil, is reported. In addition to geographic distribution data, a morphological description, taxonomical and ecological comments, conservation status assessment and photographs of C. mojuense are also provided. The species is characterised by having epiphytic habit, non-resupinate staminate flowers, brown-spotted petals, galeiform and smooth (no ribs) lip, lateral lobes with sparsely short-fimbriate margins and convergent antennae. Catasetum mojuense is morphologically similar to Catasetum discolor (Lindl.) Lindl, but is easily distinguished by the longer sepals and petals and the spotted petals on the staminate flowers. The new locality of occurence for C. mojuense is approximately 190 km east of the type locality, also in the State of Pará. The species is assessed as Critically Endangered. Habitat depletion and the limited number of sites of occurrence are the main concern for the conservation of C. mojuense.

scholarly journals Conservation status assessment of the highest forests in the world: Polylepis flavipila forests as a case study

2021 ◽  
Vol 7 (1) ◽  
pp. 160-169
Author(s):  
Fressia Nathalie Ames-Martínez ◽  
Harold Rusbelth Quispe-Melgar ◽  
Daniel Renison
Keyword(s):  
Conservation Status ◽  
The World ◽  
Status Assessment

Pariana caxiuanensis (Parianinae, Poaceae): a new species of an enigmatic genus of herbaceous bamboos from the Brazilian Amazon

Phytotaxa ◽  
2021 ◽  
Vol 510 (2) ◽  
Author(s):  
KAUÊ NICOLAS LINDOSO DIAS ◽  
FABRÍCIO MOREIRA FERREIRA ◽  
PEDRO LAGE VIANA
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Brazilian Amazon ◽  
Morphological Description ◽  
Herbaceous Bamboos ◽  
Status Assessment ◽  
A New Species

Pariana caxiuanensis (Poaceae) is described and illustrated as a new species from the Brazilian Amazon. The new species is characterized by having the leaves clustered at the apex of the leafy culm, fimbriae few to absent, dimorphic flowering culms, large ligules (2.5–4 mm long), and pubescent to hirsute synflorescences. We present a morphological description, illustrations of the new species, the conservation status assessment, and a key to differentiate P. caxiuanensis from its morphologically related congeners.

scholarly journals New record of Allamanda blanchetti Kunth (Apocynaceae) for the Brazilian Atlantic Forest

2021 ◽  
Vol 5 (3) ◽  
pp. 112
Author(s):  
Diego Santos ◽  
Swami Leitão Costa ◽  
Francisco Carlos Pinheiro Costa
Keyword(s):  
Atlantic Forest ◽  
New Record ◽  
Conservation Status ◽  
First Record ◽  
Brazilian Atlantic Forest ◽  
Information Distribution ◽  
Upland Forest ◽  
Distribution Maps ◽  
New Information ◽  
Status Assessment

This study report the first record of Allamanda blanchetii Kunth in the Atlantic Forest, Brazil. This species was collected from an upland forest in Semi-deciduous Seasonal Forest. This occurrence adds new information about the distribution of this species and expands its range to Brazil, which is important for its conservation. We provide taxonomic information, distribution maps, conservation status assessment, photograps, and an identification key for the Allamanda L. species in the Atlantic Forest.

scholarly journals Global and Regional IUCN Red List Assessments: 6

2018 ◽  
Vol 6 ◽  
pp. 31-44 ◽  
Author(s):  
Giuseppe Fenu ◽  
Mohamed Abdelaal ◽  
Gianluigi Bacchetta ◽  
Luciano Bongiorni ◽  
Annalena Cogoni ◽  
...  
Keyword(s):  
Vascular Plants ◽  
Conservation Status ◽  
Iucn Red List ◽  
Red List ◽  
Global Level ◽  
Regional Assessment ◽  
Iucn Categories ◽  
Status Assessment

In this contribution, the conservation status assessment of four vascular plants according to IUCN categories and criteria are presented. It includes the assessment ofEpipactismaricae(Croce, Bongiorni, De Vivo & Fori) Presser & S.Hertel at global level, and the regional assessment ofCerintheretortaSm. (Italy), PlatantherakuenkeleiH.Baumannsubsp.kuenkelei (Europe) andTyphaelephantinaRoxb. (Egypt).

scholarly journals Conservation-Status Gaps for Marine Top-Fished Commercial Species

Fishes ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 2
Author(s):  
Imanol Miqueleiz ◽  
Rafael Miranda ◽  
Arturo Hugo Ariño ◽  
Elena Ojea
Keyword(s):  
Fish Species ◽  
Conservation Status ◽  
Species Conservation ◽  
Biodiversity Loss ◽  
Vulnerability Index ◽  
Iucn Red List ◽  
Red List ◽  
Commercial Fish ◽  
Commercial Species ◽  
Marine Realm

Biodiversity loss is a global problem, accelerated by human-induced pressures. In the marine realm, one of the major threats to species conservation, together with climate change, is overfishing. In this context, having information on the conservation status of target commercial marine fish species becomes crucial for assuring safe standards. We put together fisheries statistics from the FAO, the IUCN Red List, FishBase, and RAM Legacy databases to understand to what extent top commercial species’ conservation status has been assessed. Levels of assessment for top-fished species were higher than those for general commercial or highly commercial species, but almost half of the species have outdated assessments. We found no relation between IUCN Red List traits and FishBase Vulnerability Index, depreciating the latter value as a guidance for extinction threat. The RAM database suggests good management of more-threatened species in recent decades, but more data are required to assess whether the trend has reverted in recent years. Outdated IUCN Red List assessments can benefit from reputed stock assessments for new reassessments. The future of IUCN Red List evaluations for commercial fish species relies on integrating new parameters from fisheries sources and improved collaboration with fisheries stakeholders and managers.

scholarly journals Distribution patterns and conservation status of Crocus species in Iran, one of the diversity centers of Crocus in the Middle East

2021 ◽  
Vol 48 (2) ◽  
pp. 156-168
Author(s):  
Melika Tabasi ◽  
Ahmadreza Mehrabian ◽  
Sadaf Sayadi
Keyword(s):  
Middle East ◽  
Conservation Status ◽  
Distribution Patterns ◽  
Field Studies ◽  
Distribution Data ◽  
Herbarium Specimens ◽  
Distribution Centers ◽  
Boundary Area ◽  
Universal Transverse Mercator ◽  
Western Asia

Abstract Assessing distribution patterns of valuable taxa plays an important role in the biodiversity conservation of these taxa. The genus Crocus L. (Iridaceae) comprises about 100 species that are distributed mainly in the Mediterranean region and western Asia. The present study purposed to assess the distribution patterns of Iranian Crocus species (including C. sativus L. and 8 wild species) and their conservation status in Iran as one of diversity centers of Crocus in the Middle East. A set of geographic distribution data was compiled through field studies, and reviews of herbarium specimens, iNaturalist, and various Flora. Localities were marked on geo-referenced maps (1/106) of Iran using ArcView version 3.2 (Esri, 2000). The distribution patterns of the taxa were mapped per 0.25° × 0.25° universal transverse Mercator grid cells (25 km2 with the exception of boundary area). Based on the species distribution (SDI) (33%) and species specialization (SSI) (44%) indices, those Iranian Crocus species that are threatened are mainly distributed in Irano-Turanian region. The mountainous ecosystems of Almeh and Western Alborz are important distribution centers of these taxa. Iranian Crocus species with SSI < 0.5 (C. almehensis, C. gilanicus, C. michelsonii, and C. caspius) have the highest conservation value.

scholarly journals Resurrection of the Butterfly-winged Comber, Serranus papilionaceus Valenciennes, 1832 (Teleostei, Serranidae) and its phylogenetic position within genus Serranus

ZooKeys ◽  
2021 ◽  
Vol 1017 ◽  
pp. 111-126
Author(s):  
Adriana Vella ◽  
Noel Vella ◽  
Carolina Acosta-Díaz
Keyword(s):  
Conservation Status ◽  
Valid Species ◽  
Phylogenetic Position ◽  
Mitochondrial Coi ◽  
Interspecific Divergence ◽  
Population Conservation ◽  
Status Assessment ◽  
Morphological Differences ◽  
Species Specific ◽  
High Level

The family Serranidae is represented by 92 genera and 579 valid species, with the genus Serranus Cuvier, 1816, containing 30 species. In this study, specimens of Butterfly-winged Comber, Serranus papilionaceus Valenciennes, 1832, were collected from the Canary Islands and compared morphologically and genetically to Painted Comber, Serranus scriba (Linnaeus, 1758), from the Mediterranean Sea. Morphological differences, especially in the colour banding pattern, were corroborated by genetic differences in mitochondrial (COI and ND2) and nuclear (Rhod and PTR) markers. The mitochondrial DNA markers revealed a high level of divergence and no shared haplotypes between the two species (interspecific divergence: COI 4.31%; ND2 8.68%), and a phylogenetic analysis showed that these two species are closely related sister species sharing common ancestry. This study is therefore offering to resurrect S. papilionaceus Valenciennes, 1832 as a valid species increasing the number of eastern Atlantic Serranus species to 11. This should direct new species-specific research, including its population conservation status assessment across its distribution.

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