The large branchiopod, Triops cancriformis simplex (Gihi, 1921) (Crustacea: Notostraca) in temporary rain pools, recorded for the first time in Taif-KSA

Hassan, Montaser M.

doi:10.1016/j.jobaz.2015.04.006

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…T. simplex is present in Eastern Spain with a population in Ares del Maestre (Comunitat Valenciana), a location well within the distribution area of T. cancriformis in the Iberian Peninsula, and that may explain why some authors disagree on the taxonomic identity of Triops populations in that region (see Zierold et al, 2007). Nevertheless, all reported populations of T. simplex are gonochoric (Longhurst, 1955;Thièry, 1996;Hassan, 2015) which enables the assignment of the Sorraia population to the species Triops cancriformis (where non-gonochoric populations are known) without performing a genetic study.…”

Section: Discussionmentioning

confidence: 99%

First record of the tadpole shrimp Triops cancriformis (Lamarck,1801) (Crustacea: Branchiopoda: Notostraca) in Portugal

Machado¹,

Sousa²,

Fonseca³

et al. 2017

Limnetica

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First record of the tadpole shrimp Triops cancriformis (Lamarck,1801) (Crustacea: Branchiopoda: Notostraca) in PortugalNotostracan crustaceans identified as Triops cancriformis according to the presently accepted morphological criteria were recorded for the first time in Portugal in 2007. All previous records of Triops in Portugal belong to mauritanicus lineage species i.e. T. vicentinus or T. baeticus. A specimen purportedly belonging to T. cancriformis (Carvalho, 1944) has been re-identified by Machado in 2014 as T. baeticus after morphological examination. During 2007, hundreds of individuals of T. cancriformis were observed throughout the rice paddies on the northern margin of Sorraia River (Vale do Sorraia, Coruche). In the last 9 years, monthly checks during the rainy season have failed to record high population abundances and only a few specimens have been observed in the flooded tracks left by trucks and other heavy machinery on the elevated margins of the paddies. The low number of individuals observed in the latter years possibly results from changes of ecological conditions. Thus far, males of T. cancriformis have not been recorded, which may indicate that the observed population is either androdioecious or made of hermaphrodite or parthenogenetic populations. This situation contrasts with the other confirmed populations of this species in the Iberian Peninsula that are gonochoric. Parthenogenetic/hermaphrodite/androdioecious lineages, present in Northern and Central Europe, are considered to have derived from gonochoric Iberian populations in the Pleistocene which makes this finding all the more interesting in evolutionary terms. Has this population resulted from a recent recolonization from non-Iberian populations? Or has it derived directly from the assumed Iberian Pleistocene refuge? The potentially high dispersal abilities of Triops diapausing cysts and the possibility of hermaphrodite/parthenogenetic reproduction favour the 1st hypothesis of recolonization. Possible sources of individuals are (i) cysts attached to migratory birds arriving possibly from Southern France or Northern Italy and that are regularly seen feeding at these rice fields or ii) cysts unwittingly transported with the rice seeds used in the Vale do Sorraia. Both are in accordance with the assumption that nongonochoric reproductive mode confers a colonization advantage over gonochoric populations, which lack evidence of fast long distance dispersal ability. Future multilocus phylogenetic analysis is expected to clarify the origin of T. cancriformis found in the Sorraia's rice fields.

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Section: Discussionmentioning

confidence: 99%

First record of the tadpole shrimp Triops cancriformis (Lamarck,1801) (Crustacea: Branchiopoda: Notostraca) in Portugal

Machado¹,

Sousa²,

Fonseca³

et al. 2017

Limnetica

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Aquatic invertebrate mandibles and sclerotized remains in Quaternary lake sediments

Courtney-Mustaphi,

Steiner,

von Fumetti

et al. 2023

J Paleolimnol

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Subfossil remains of aquatic invertebrates found in lacustrine sediments are useful paleoenvironmental indicators. Strongly scleroticized chitinous body parts from the exoskeleton or exuviae from invertebrates are often the most resistant to degradation during syn- and post-depositional processes. Invertebrate mandibles and body parts that superficially resemble mandibles, such as claw-like appendages and pygopodia, are frequently found in sieved Quaternary lacustrine, palustrine, and deltaic sediments. Guides, catalogs and atlases have been published that are well suited for the identification of subfossil remains for several invertebrate groups, such as chironomids, cladocerans, and ostracods, among others. However, aquatic invertebrate remains of several ecologically important invertebrate groups continue to be underused in paleoenvironmental studies, in part, because there are few visual keys or other documentation sources (e.g. descriptions, catalogs or atlases) that increase awareness and facilitate identification. Here we present sets of digital photomicrographs of pre-identified aquatic invertebrate specimens collected from streams, lakes and ponds that have been chemically cleared to preserve structures that are observed in subfossil remains in sieved sediment samples, commonly the > 100 μm size fractions. In addition, we present examples of these structures from Quaternary lake-sediment samples and cite the dispersed literature that demonstrate that these remains are preserved and remain identifiable in the fossil record. We document mandibles from several taxonomic groups that include Crustacea: Amphipoda, Isopoda, Ostracoda, and Notostraca; and Insecta orders: Coleoptera, Diptera, Ephemeroptera, Hemiptera, Odonata, Lepidoptera, Megaloptera, Plecoptera, and Trichoptera. The compilation of microphotographs also includes pygopodia and claw appendages of Plecoptera and Trichoptera, with additional images of other common invertebrate mouthpart and head remains. We describe several types of fossilizing structures that are, to our knowledge, not previously described in the paleoecological literature (e.g. mandibles of amphipods or plecopterans) but also show that some structures are considerably more variable than expected based on available descriptions, such as the mandibles of Ephemeroptera or Trichoptera, and that these can potentially be separated into different morphotypes useful for identification of subfossil material. We also discuss the potential of analyzing and interpreting the additional remains together with the remains of more commonly analyzed invertebrate groups (e.g. Chironomidae) to contribute to paleoenvironmental interpretations, which will allow assessments of functional groups (e.g. predators, shredders, grazers) or habitat types (e.g. littoral, profundal or lotic environments) that aquatic invertebrate remains originate from.

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Review of the large branchiopod crustacean fauna of Qatar (Anostraca, Notostraca, Spinicaudata) and adjacent countries

Rogers

Bary

Alatalo

et al. 2022

Zoology in the Middle East

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The large branchiopod, Triops cancriformis simplex (Gihi, 1921) (Crustacea: Notostraca) in temporary rain pools, recorded for the first time in Taif-KSA

Cited by 3 publications

References 20 publications

First record of the tadpole shrimp Triops cancriformis (Lamarck,1801) (Crustacea: Branchiopoda: Notostraca) in Portugal

First record of the tadpole shrimp Triops cancriformis (Lamarck,1801) (Crustacea: Branchiopoda: Notostraca) in Portugal

Aquatic invertebrate mandibles and sclerotized remains in Quaternary lake sediments

Review of the large branchiopod crustacean fauna of Qatar (Anostraca, Notostraca, Spinicaudata) and adjacent countries

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