Category: Check List

Tiny habitant from Abrolhos bank (Brazil) sheds light on tropical Atlantic biogeography

For the first time, the bivalve mollusc Guyanella clenchi has been reported from Abrolhos Bank, Brazil.

For the first time, the bivalve mollusc Guyanella clenchi has been reported from Abrolhos Bank, Brazil. This almost unknown bivalve had previously been reported solely from the Caribbean region. Apart from being the southernmost record for the species, its presence also helps the experts to determine the way the marine fauna from the Caribbean interacts with its South American relatives.

The bivalve, which is a minute mollusc of only a few millimetres, had been known from Suriname, Guadeloupe, Colombia and French Guiana for nearly half a century. However, it is almost absent from the bibliographical registers and zoological collections.

Then, unexpectedly, during recent cruises to Abrolhos Bank (Bahia, Brazil), carried out as part of the Pro-Abrolhos project at Instituto Oceanografico da Universidade de Sao Paulo (IO-USP), enough specimens were retrieved to document the mysterious species from the Brazilian site.

The resulting study is published in the open-access journal Check List by Dr Barbara Louise Valentas-Romera, Museu de Zoologia da Universidade de Sao Paulo (MZSP), together with MSc Flavia Maria Pereira Costa and Dr Ana Maria Setubal Pires-Vanin, both affiliated to Instituto Oceanografico da Universidade de Sao Paulo (IO-USP).

According to the scientists, the discovery is very important for the understanding of the interaction between the mollusc faunas from the Caribbean and Southern Atlantic regions. While a mixture of these had long been known at both localities, serving as evidence that many species are indeed capable of crossing the geographical barriers between the two oceanic areas, it seems that no one had managed to answer how exactly this is happening. Now, the discovery of the tiny species shows that even small-sized molluscs have the ability to disperse so widely.

Additionally, the discovery of fresh specimens, complete with the body inside the shell, brings to light new information about the anatomy of the species itself, since the existing knowledge had only been derived from dry shells. Now, the secretive bivalve is to finally undergo molecular analyses.

The researchers behind the study explain:

“Despite its small size, the new occurrence of Guyanella clenchi brings new key data needed to understand the biogeography of the Caribbean and Southern Atlantic regions and improve our knowledge of the molluscs inhabiting the Brazilian coast, specifically the Abrolhos Bank, which is an important South Atlantic biodiversity hotspot.”

Abrolhos Bank is the largest and most species-rich coral reef in the Southern Atlantic. It is located in the Abrolhos Archipelago area and is part of the Abrolhos Marine National Park. Its most notable peculiarity is the giant coral structures shaped like mushrooms, locally known as “Chapeiroes”. A “chapeirao” can reach up to 25 metres in height and 50 metres in diameter. The region is considered the most biodiverse spot in the Southern Atlantic Ocean, providing home to several species that occur nowhere else.

Abrolhos Bank region (Bahia, Brazil).
Image by Dr Bárbara Louise Valentas-Romera.

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Original source:

Valentas-Romera BL, Costa FMP, Pires-Vanin AMS (2019) Range extension of Guyanella clenchi (Altena, 1968) (Bivalvia, Lucinidae) with new records from Abrolhos Bank, Brazil. Check List15(4): 549-554. https://doi.org/10.15560/15.4.549

Scientists discover over 450 fossilised millipedes in 100-million-year-old amber

Since the success of the Jurassic Park film series, it is widely known that insects from the Age of the Dinosaurs can be found exceptionally well preserved in amber, which is in fact fossilised tree resin.

Especially diverse is the animal fauna preserved in Cretaceous amber from Myanmar (Burma). Over the last few years, the almost 100-million-year-old amber has revealed some spectacular discoveries, including dinosaur feathers, a complete dinosaur tail, unknown groups of spiders and several long extinct groups of insects.

However, as few as three millipede species, preserved in Burmese amber, had been found prior to the study of Thomas Wesener and his PhD student Leif Moritz at the Zoological Research Museum Alexander Koenig – Leibniz Institute for Animal Biodiversity (ZFMK). Their research was recently published in the open-access journal Check List.

One of the newly discovered fossilised millipedes. Photo by Dr Thomas Wesener.

Having identified over 450 millipedes preserved in the Burmese amber, the scientists confirmed species representing as many as 13 out of the 16 main orders walking the Earth today. The oldest known fossils for half of these orders were found within the studied amber.

The researchers conducted their analysis with the help of micro-computed tomography (micro-CT). This scanning technology uses omni-directional X-rays to create a 3D image of the specimen, which can then be virtually removed from the amber and digitally examined.

The studied amber is mostly borrowed from private collections, including the largest European one, held by Patrick Müller from Käshofen. There are thought to be many additional, scientifically important specimens, perhaps even thousands of them, currently inaccessible in private collections in China.

Over the next few years, the newly discovered specimens will be carefully described and compared to extant species in order to identify what morphological changes have occurred in the last 100 million years and pinpoint the speciation events in the millipede Tree of Life. As a result, science will be finally looking at solving long-standing mysteries, such as whether the local millipede diversity in the southern Alps of Italy or on the island of Madagascar is the result of evolutionary processes which have taken place one, ten or more than 100-million years ago.

According to the scientists, most of the Cretaceous millipedes found in the amber do not differ significantly from the species found in Southeast Asia nowadays, which is an indication of the old age of the extant millipede lineages.

On the other hand, the diversity of the different orders seems to have changed drastically. For example, during the Age of the Dinosaurs, the group Colobognatha – millipedes characterised by their unusual elongated heads which have evolved to suck in liquid food – used to be very common. In contrast, with over 12,000 millipede species living today, there are only 500 colobognaths.

Another curious finding was the discovery of freshly hatched, eight-legged juveniles, which indicated that the animals lived and reproduced in the resin-producing trees.

“Even before the arachnids and insects, and far ahead of the first vertebrates, the leaf litter-eating millipedes were the first animals to leave their mark on land more than 400-million-years ago,” explain the scientists. “These early millipedes differed quite strongly from the ones living today – they would often be much larger and many had very large eyes.”

The larger species in the genus Arthropleura, for example, would grow up to 2 m (6.5 ft) long and 50-80 cm (2-3 ft) wide – the largest arthropods to have ever crawled on Earth. Why these giants became extinct and those other orders survived remains unknown, partly because only a handful of usually badly preserved fossils from the whole Mesozoic era (252-66-million years ago) has been retrieved. Similarly, although it had long been suspected that the 16 modern millipede orders must be very old, a fossil record to support this assumption was missing.

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Original source:

Wesener T, Moritz L (2018) Checklist of the Myriapoda in Cretaceous Burmese amber and a correction of the Myriapoda identified by Zhang (2017). Check List 14(6): 1131-1140. https://doi.org/10.15560/14.6.1131

Wildlife on the highway to hell: Roadkill in the largest wetland, Pantanal region, Brazil

Adult individual of Erythrolamprus aesculapii captured in roadside habitats of BR-262. Photo by Michel Passos

Scientists provide crucial data to prompt further conservation and safety measures at the notorious BR-262 highway

Having systematically monitored wild animals killed on the Brazilian federal highway BR-262, which passes through the Pantanal region, a research team from the Federal University of Mato Grosso do Sul, Brazil, published their data concerning birds and reptiles in the open access journal Check List.

Apart from information crucial for future conservation activities, the paper provides new and unexpected roadkill records, including the Black-and-white hawk-eagle.

Authored by Wagner Fischer and his colleagues Raquel Faria de Godoi and Antonio Conceição Paranhos Filho, the article is part of the first dataset of vertebrate mortality in the region. A separate paper of theirs is planned to present the data concerning mammals gathered during the same survey, which took place between 1996 and 2000.

An adult individual of Xenodon matogrossensis captured in roadside habitats of BR-262. Photo by Cyntia Santos.

Having mapped bird and reptile roadkill on the highway between the cities of Campo Grande and Corumbá in the Brazilian savannah, the team reports a total of 930 animals representing 29 reptile and 47 bird species. In addition, the data provide the first regional geographic record of the colubrid snake Hydrodynastes bicinctus.

The researchers conclude that the species richness observed in the road-killed animals clearly confirms earlier concerns about wildlife-vehicle collisions in the Pantanal region. Such accidents lead to long-term and chronic impact on both wildlife and road safety.

“Mitigation of wildlife-vehicle collisions on this road continues to claim urgency for biodiversity conservation and for human and animal safety and care,” say the authors.

“For managers, the main goal should be to determine target species of greatest concern, focusing on those vulnerable to local extinction or those which represent major risks of serious accidents.”

In the past, the team’s dataset had already been used as a guide to road fauna management. In particular, it was used by government road managers when planning animal overpassess and underpassess equipped with roadside fences as part of the long-term project Programa Estrada Viva: BR-262. So far, however, only some of the less efficient safety methods, such as road signs and lowered speed limits, have been applied at the most critical points.

Over the past several years, a few independent studies have been conducted to monitor roadkill in a similar manner. Two of them (2010 and 2017) looked into mammal-vehicle collisions, while the third recorded reptiles and birds as well. All of them serve to demonstrate that BR-262 continues to be a major cause for the regional wildlife mortality, which in turn increases the risks of serious accidents.

“BR-262 keeps its inglorious fame as a highway to hell for human and wild lives,” points out lead author Wagner Fischer.

Roadkill on the BR-262 highway, Pantanal region, Brazil. Photos by Ricardo Fraga and Wagner Fischer.

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Original source:

Fischer W, Godoi RF, Filho ACP (2018) Roadkill records of reptiles and birds in Cerrado and Pantanal landscapes. Check List 14(5): 845-876. https://doi.org/10.15560/14.5.845

ScienceOpen indexes >1,000 articles from ARPHA-hosted journals RIO & Check List in a trial

Two scholarly journals published on ARPHA – Research Ideas and Outcomes (RIO Journal) and Check List – now have their articles freely available via the community-focused search and discovery platform ScienceOpen.

This new trial between the two high-tech innovators and Open Science proponents presents an important step forward to making research publications not only easier to find and access, but also more inviting to fellow scientists seeking new collaborations and platforms for voicing their ideas and expertise.

Currently, there are 168 and 948 article records fed to ScienceOpen straight from RIO and Check List respectively.

While the articles’ underlying data, such as author names, citations, keywords, journals and more, are automatically harvested and analyzed by ScienceOpen, so that research items can be easily interlinked, readers are encouraged to further provide context to the research items. The user-friendly intuitive interface invites them to add their comments, recommendations or open post-publication peer reviews, and even create their own topical collections regardless of affiliations and journals.

To make sure users land on the most relevant articles in what feels like the blink of an eye compared to traditional methods, ScienceOpen also accommodates an advanced multi-layer search engine relying on a total of 20 smart filters and six sorting parameters.

“We have long worked closely with ScienceOpen, as it only makes sense given our shared vision for the future of academia, so the present trial project happened very naturally,” says Prof. Lyubomir Penev, founder and CEO of ARPHA and its developer – scholarly publisher and technology provider Pensoft. “Nowadays, we are well aware that scientific findings are of little merit if ‘living’ in a vacuum. Therefore, we need research articles to be as discoverable as possible, and, no less importantly, to be open to feedback and further work.”

“We are thrilled to add this new content to the ScienceOpen as we have both strong researcher communities in zoology and in scholarly communications within our broadly interdisciplinary content. The ARPHA platform is a natural fit to deliver rich metadata to our discovery services and we are very much looking forward to working with their team,” says Stephanie Dawson, CEO of ScienceOpen.

 

About ScienceOpen:

ScienceOpen is an independent start-up company based in Berlin and Boston, which explores new ways to open up information for the scholarly community. It provides a freely accessible search and discovery platform that puts research in context. Smart filters, topical collections and expert input from the academic community help users to find the most relevant articles in their field and beyond.

The biodiversity data journal Check List joins Pensoft’s open access portfolio

The well-reputed and established journal Check List is the latest biodiversity-themed title to join scholarly publisher Pensoft’s peer-reviewed and open access family. Its first issue in collaboration with Pensoft is now published on the journal’s new website.

Check List is an online open access journal launched in 2005 in Brazil. It publishes distribution summaries, annotated lists of species and notes on the geographic distribution of all taxa. The journal stands for the idea that maintaining records of the range of a species is the very first step towards undertaking effective actions for its conservation. Furthermore, its team believes that publishing such data provides the baseline for biodiversity preservation as a whole.

The move sees Check List migrating to the Pensoft-developed journal publishing platform ARPHA (abbreviation for Authoring, Reviewing, Publishing, Hosting and Archiving) to provide its authors, editors and users with a brand new look and feel along with a whole set of high-tech perks.

While the all-new sleek interface is evident at first visit of the Check List‘s new website, there is much more under the surface. The partnership with Pensoft and ARPHA means that Check Listwill enjoy fast-track and convenient publishing. The manuscripts will be taken care for from the authoring stage, through reviewing and dissemination – all the way to archiving. The papers will be published in three formats (PDF, XML, HTML) and full of semantic enhancements.

Recognising the importance of easy and efficient publication of accessible data in the spirit of both biodiversity conservation and open science, ARPHA allows for data to be published as supplementary files along with the article, or through internationally recognised repositories, such as GBIF, Genbank, Barcode of Life, Dryad, and others.

“It is fantastic to have Check List join the world’s leading and most technologically advanced biodiversity publisher,” comments Check List Editor-in-Chief Marcus Guidoti.

“At Pensoft, we are happy to once again share and apply our long-year experience and know-how in scholarly publishing and biodiversity data handling,” says Prof. Lyubomir Penev, the founder and Managing Director of Pensoft. “I am certain that this collaboration will advance the technological and publishing label of Check List to the benefit of the scientific community”

Check List is the second scholarly journal of South American origin to join Pensoft’s growing portfolio, after another highly regarded Brazilian-born academic title – Zoologia – moved to ARPHA earlier this year.