Germination Capacity of Annona deceptrix (Westra) H. Rainer (Annonaceae) an Endemic and Endangered Species in Manabí, Ecuador

Annona deceptrix is an endemic and endangered tree from Ecuador according to the IUCN Red List of Endangered Species™. Its endangered status has been related with anthropogenic activities and some intrinsic characteristics of this species such as a low germination capacity of its seeds under natural conditions which is a serious limitation to obtain plants to establish conservation and breeding strategies. The objective of this study was to determine the seed germination capacity of A. deceptrix under different conditions and pre-germination treatments as a decisive factor in the survival of the species in ecosystems. The six pre-germination treatments were seed mechanical scarification (fine sandpaper), seed imbibitions in gibberellic acid solutions with three different concentrations (600, 700, 800 ppm) for 24 hours, imbibition of seeds in distilled water for 48 hours and direct sowing (control). For each treatment was sown twenty seeds under greenhouse conditions and germination chamber. The variables evaluated were: total number of germinated seeds, germination capacity, maximum germination value and germination energy. Mechanical scarification was the best treatment with 100 % germinated seed and showed to be significantly different than the other treatment. In this regards, the rest of the treatment the germination ranged between 35 % to 55 % and did not show statistical differences each other. In conclusion, the seeds of A. deceptrix have a low germination capacity in natural conditions and then they need a pre-germination process such as mechanical-scarification to guarantees for their performance in the ecosystems.

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Co-extinct and critically co-endangered species of parasitic lice, and conservation-induced extinction: should lice be reintroduced to their hosts?

Oryx ◽

10.1017/s0030605313000628 ◽

2014 ◽

Vol 49 (1) ◽

pp. 107-110 ◽

Cited By ~ 24

Author(s):

Lajos Rózsa ◽

Zoltán Vas

Keyword(s):

Endangered Species ◽

Host Specificity ◽

Host Species ◽

Conservation Status ◽

Iucn Red List ◽

Red List ◽

Published Data ◽

Common Phenomenon ◽

Global Extinction

AbstractThe co-extinction of parasitic taxa and their host species is considered a common phenomenon in the current global extinction crisis. However, information about the conservation status of parasitic taxa is scarce. We present a global list of co-extinct and critically co-endangered parasitic lice (Phthiraptera), based on published data on their host-specificity and their hosts’ conservation status according to the IUCN Red List. We list six co-extinct and 40 (possibly 41) critically co-endangered species. Additionally, we recognize 2–4 species that went extinct as a result of conservation efforts to save their hosts. Conservationists should consider preserving host-specific lice as part of their efforts to save species.

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Managing Protected Areas Benefits: New Findings of <em>Zeuneriana marmorata</em>, Endangered Species as Listed in IUCN Red List (Insecta: Orthoptera)

10.3390/iece-10519 ◽

2021 ◽

Author(s):

Filippo Maria Buzzetti ◽

Marco Bardiani ◽

Fausto Leandri

Keyword(s):

Endangered Species ◽

Protected Areas ◽

Iucn Red List ◽

Red List ◽

New Findings

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Miconia rheophytica (Melastomataceae: Miconieae), a new and endangered species from the Magdalena Medio region of Colombia

Phytotaxa ◽

10.11646/phytotaxa.371.1.7 ◽

2018 ◽

Vol 371 (1) ◽

pp. 55

Author(s):

JUAN MAURICIO POSADA-HERRERA ◽

FRANK ALMEDA

Keyword(s):

Endangered Species ◽

Iucn Red List ◽

Red List ◽

Conservation Assessment ◽

Iucn Red List Categories ◽

Leaf Surfaces ◽

Red List Categories ◽

Bright Blue ◽

Lanceolate Leaf

Miconia rheophytica is described, illustrated, and compared with presumed relatives in the Octopleura clade. It is distinguished by its narrowly elliptic to ovate-lanceolate leaf blades with entire to subentire margins that have evenly spaced spreading smooth eglandular trichomes 0.8−1.4 mm long, an indumentum of dendritic trichomes with short axes and terete radiating arms on distal internodes, adaxial petiole surfaces, and primary and secondary veins on abaxial leaf surfaces, unribbed hypanthia that are constricted and tapered distally below the torus and covered with a mixture of basally roughened trichomes and dendritic trichomes with short axes, anthers with two ± truncate apical pores, eglandular anther appendages, 3-locular ovary, and berries that are bright blue at maturity. It is known only from flash-flooded riverbanks in three river canyons in the Magdalena Medio region of Antioquia, Colombia. A conservation assessment of “Endangered” is recommended for this species based on IUCN Red List Categories and Criteria.

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How secure is the Lord Howe Island Woodhen? A population viability analysis using VORTEX

Pacific Conservation Biology ◽

10.1071/pc970125 ◽

1997 ◽

Vol 3 (2) ◽

pp. 125 ◽

Cited By ~ 15

Author(s):

Barry W. Brook ◽

Leong Lim ◽

Robert Harden ◽

Richard Frankham

Keyword(s):

Captive Breeding ◽

Population Viability Analysis ◽

Iucn Red List ◽

Population Viability ◽

Viability Analysis ◽

Wild Pigs ◽

Lord Howe Island ◽

Iucn Red List Categories ◽

Over Exploitation ◽

Endangered Status

The Lord Howe Island Woodhen is a flightless rail endemic to Lord Howe Island that became endangered due to human over-exploitation and predation from wild pigs. It has recently recovered from a population size of 20?30 to around 200 as a result of a captive breeding and reintroduction programme. Its classification has been downgraded from endangered to vulnerable, but no quantitative assessment of its future prospects had been undertaken. A population viability analysis (PVA) was performed on the Lord Howe Island Woodhen to project its possible fate using VORTEX, a package that realistically reflects the woodhen's recent history. Prospective analyses showed the woodhen to be acutely sensitive to minor changes in mortality and fecundity, and to catastrophes, due to exotic species, inbreeding, or disease. A remote population needs to be established if the likelihood of the woodhen's extinction is to be minimized. According to the most recent IUCN Red List categories, the woodhen satisfies the criteria for endangered status.

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Check list of waterbirds at Wadi Djedi in Ziban Oasis-Algeria

Arxius de Miscel·lània Zoològica ◽

10.32800/amz.2019.17.0034 ◽

2019 ◽

pp. 34-43

Author(s):

Y. Nouidjem ◽

F. Mimeche ◽

E. Bensaci ◽

S. Merouani ◽

A. Arar ◽

...

Keyword(s):

Endangered Species ◽

Iucn Red List ◽

Red List ◽

White Stork ◽

Check List ◽

Ciconia Ciconia ◽

Water Birds ◽

Kentish Plover

This pioneering work is the first to document the aquatic avifauna community of the Wadi Djedi in the Ziban region in southeast of Algeria. We present results obtained through the monthly counts of waterbirds conducted from September 2013 to September 2016. On this wetland we recorded 36 species of water birds representing 11 families. The Anatidae family was the most numerous, with 11 species. From among all the species, 18 were wintering species, nine were visitors, eight were sedentary breeding species (including the ruddy shelduck Tadorna furruginea and Kentish plover Charadrius alexandrines) and one species was migratory nesting (the white stork Ciconia ciconia). Two species (the teal marbled Marmaronetta angustirostris and ferruginous duck Aythya nyroca) are listed as Vulnerable on the IUCN Red List of endangered species.

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Odonates from Bodoquena Plateau: checklist and information about endangered species

Biota Neotropica ◽

10.1590/1676-0611-bn-2016-0310 ◽

2017 ◽

Vol 17 (3) ◽

Cited By ~ 4

Author(s):

Ricardo Koroiva ◽

Marciel Elio Rodrigues ◽

Francisco Valente-Neto ◽

Fábio de Oliveira Roque

Keyword(s):

Endangered Species ◽

Iucn Red List ◽

Red List ◽

Mato Grosso ◽

Number Of Species ◽

Red List Species ◽

Data Deficient ◽

First Time ◽

Species Being ◽

Mato Grosso Do Sul

Abstract Here we provide an updated checklist of the odonates from Bodoquena Plateau, Mato Grosso do Sul state, Brazil. We registered 111 species from the region. The families with the highest number of species were Libellulidae (50 species), Coenagrionidae (43 species) and Gomphidae (12 species). 35 species are registered in the IUCN Red List species, four being Data Deficient, 29 of Least Concern and two species being in the threatened category. Phyllogomphoides suspectus Belle, 1994 (Odonata: Gomphidae) was registered for the first time in the state.

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A new endemic psyllid genus, Stevekenia gen. nov. (Hemiptera: Psylloidea, Triozidae), from the Hawaiian Islands with two new and rare species on threatened host plants in the endemic genus Nothocestrum (Solanaceae)

Zootaxa ◽

10.11646/zootaxa.4286.3.4 ◽

2017 ◽

Vol 4286 (3) ◽

pp. 370 ◽

Cited By ~ 1

Author(s):

DIANA M. PERCY

Keyword(s):

New Species ◽

Host Plants ◽

Plant Density ◽

Hawaiian Islands ◽

Morphological Characters ◽

Iucn Red List ◽

Term Survival ◽

Endemic Genus ◽

Endangered Status

A new endemic psyllid genus from the Hawaiian Islands, Stevekenia gen. nov., is described. Two new species, both single island endemics, feed on host plants in the endemic genus Nothocestrum (Solanaceae). Stevekenia nothocestri sp. nov. is found on Nothocestrum longifolium on the island of Oahu and Stevekenia aiea sp. nov. is found on N. peltatum on the island of Kauai. The host plants are montane rainforest species and both are on the IUCN Red List of Threatened Species. In particular, N. peltatum, which is endemic to the island of Kauai, is considered critically endangered, and therefore a similarly endangered status for these host-specific insects is likely. Only a few specimens of each Stevekenia species have been found, suggesting occurrence at low abundance. The host plants survive either as isolated individuals or small fragmented populations, which may already constitute less than the required critical host plant density for the long term survival of this psyllid genus. Unique morphological characters distinguish Stevekenia from other Hawaiian genera, and the placement of this genus within Triozidae is discussed. Mitochondrial DNA barcodes for the new species are provided.

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Population size, distribution and status of the remote and Critically Endangered Bawean deer Axis kuhlii

Oryx ◽

10.1017/s0030605316000429 ◽

2016 ◽

Vol 51 (4) ◽

pp. 665-672 ◽

Cited By ~ 5

Author(s):

Dede Aulia Rahman ◽

Georges Gonzalez ◽

Stéphane Aulagnier

Keyword(s):

Population Size ◽

Faecal Pellet ◽

Iucn Red List ◽

Critically Endangered ◽

Density Estimates ◽

Distribution Maps ◽

Population Size Estimates ◽

Endangered Status ◽

Size Estimates ◽

Model Approach

AbstractConservation of rare ungulates requires reliable population size estimates and distribution maps for prioritizing investments and assessing the effectiveness of conservation measures. We used both camera trapping and a random encounter model approach, and faecal pellet group counts, to update the range and population size of the Bawean deer Axis kuhlii in the Bawean Island Nature Reserve and Wildlife Sanctuary, Indonesia. We studied 2-month periods to fulfil the assumption of population closure. Both methods provided similar population density estimates (higher in the dry season) of c. 227–416 individuals. The estimated range of the species is significantly narrower than previously reported. The main threats (habitat loss as a result of illegal logging, and disturbance by dogs and hunters) are ongoing. Based on these results we suggest that the species should retain its Critically Endangered status on the IUCN Red List.

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