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Pinna rudis Linnaeus, 1758 (Bivalvia: Pinnidae) has an Atlantic-Mediterranean distribution. Habitat degradation is considered the main cause of population declines in the recent past, raising the conservation status of the species to the category of vulnerable in some places. Population dynamics studies of P. rudis are still necessary to fully understand its conservation requirements. Moreover, new methods of individual data collection should be developed as individuals are highly sensitive to extraction and manipulation. In the present study, we propose a non-invasive method to collect P. rudis morphometric data in situ. For this, we sampled 900 m2 of the sea bed at Matiota Beach on São Vicente Island, Cabo Verde Archipelago, and collected 18 individuals to compute the relationship between shell length and width. The regression equation between the parameters allowed us to estimate the total size of 59 P. rudis individuals obtained from the beach. The non-invasive method adopted allowed determination of the total size of the individuals without removing them from the substratum and, thereby, allowing the comparative study of the species in different zones.
Based on six weeks spent in the field on six Cabo Verdean Islands in September/ October 2016 and 2017, we present 18 additions to the checklist of terrestrial biodiversity of the archipelago (ten arthropods, one bird, two fungi, and five flowering plants). Four of them are first records for Cabo Verde, the others for particular islands. Most interesting are the apple of Sodom fruit fly Dacus longistylus, perhaps actively introduced for biocontrol of the toxic apple of Sodom tree and the additions to the distribution of several bee species of the genera Amegilla, Megachile, and Xylocopa. Our observations indicate that the biodiversity of Cabo Verde is still incompletely known and more fieldwork is needed.
The West African region possesses one of the largest knowledge gaps in the distribution and taxonomy of all species, especially inconspicuous ones. This work presents one of the few bat studies ever carried out in the Cabo Verde Islands. Knowledge on the distribution of the seven species recorded in this remote archipelago is still very scarce and with very low resolution (many at island level), so new records are expectable and invaluable for the establishment of conservation policies. A review on the scattered and digitally unavailable (due to the old date of publication) knowledge of the Cabo Verde bat fauna with the first bat records for two islands and new occurrence data for two species on three islands is presented. It is expected that this work can constitute a reference for future bat works in the region, while providing acoustic data that can easily be updated upon future taxonomic revisions.
Untapped potential
(2018)
This first number of the seventh volume of Zoologia Caboverdiana is focussed on two groups of organisms that remain largely understudied in Cabo Verde. We are namely referring to mammals, both terrestrial and aquatic, and to terrestrial invertebrates. Two original articles and a short note, by authors from five different nationalities, including Cabo-Verdean, consolidate the vitality of this peer-reviewed journal.
Muito potencial
(2018)
No primeiro número do sétimo volume desta revista dedicamos a nossa atenção a dois grupos de organismos pouco estudados em Cabo Verde. Referimo-nos nomeadamente aos mamíferos, tanto terrestres como marinhos, e aos invertebrados terrestres. Este número consolida ainda a vitalidade desta revista com revisão por pares, com dois artigos originais e uma nota breve de autores de cinco nacionalidades diferentes, incluindo a cabo-verdiana.
Of the circa 25 species of butterfly species occurring in the Cabo Verde Archipelago, only one species is endemic: Chilades evorae (Lycaenidae). The species was reared by the authors and colour photographs of the early stages of this species are presented for the first time. The host-plants on the islands of Santo Antão, São Vicente, and Santa Luzia are illustrated with photographs. The butterfly is reported from Raso for the first time, together with a potential host-plant. A tachinid fly species Cadurciella sp. parasitising C. evorae is also reported.
Gervais’ beaked whale Mesoplodon europaeus (Gervais, 1855) is restricted to the Atlantic Ocean. Although most records are from the North Atlantic, it is probably continuously distributed in deep warm waters around the equator (Mead 1989, Norman & Mead 2001). Its occurrence in West Africa is poorly known, as records are rare. It is classified as Data Deficient (Taylor et al. 2008).
It is with great joy and imbued with the contagious Christmas spirit lived in Macaronesia that I present the second issue of the sixth volume of this journal. This issue consolidates the new path tracked the beginning of 2016, which focused on the renewal of the editorial board and the broadening of the scope of the journal to new scientific areas.
É com grande alegria, e imbuída do contagiante espírito Natalício que se vive na Macaronésia, que apresento o segundo número do sexto volume desta revista. Este número consolida o novo rumo traçado no início de 2016, que apostou na renovação do corpo editorial e na ampliação do âmbito da revista para novas áreas científicas.
DNA sequences disclose a new species of Africonus cone snail from São Vicente (Gastropoda: Conidae)
(2017)
The sequencing of complete mitochondrial genomes of cone species belonging to the (sub)genus Africonus, which is endemic to Cabo Verde, has allowed the reconstruction of phylogenetic relationships among these species, as well as delimitation and validation of their taxonomic status. While several species were found to be synonyms, some populations had enough DNA sequence divergence to merit the species status. This is the case of some populations inhabiting São Vicente, which are hereby described as a new species. The new species shares similarity in shell morphology to Africonus miruchae (Röckel, Rolán & Monteiro, 1980), endemic to Sal, due to convergence, and with Africonus denizi Afonso & Tenorio, 2011, endemic to São Vicente, due to close phylogenetic relationship. Additionally, the three species have significant differences in radular morphology.