Branchinella affinis, Linder, 1941, Linder, 1941

Timms, Brian V, 2012, Further studies on the fairy shrimp genus Branchinella (Crustacea: Anostraca: Thamnocephalidae) in Australia, with descriptions of five new species, Zootaxa 3595, pp. 35-60: 36-38

publication ID

http://doi.org/ 10.5281/zenodo.254592

publication LSID

lsid:zoobank.org:pub:B628934A-BF37-41A2-8E77-EC19A3A1F5AC

DOI

http://doi.org/10.5281/zenodo.5685421

persistent identifier

http://treatment.plazi.org/id/03909832-FFE4-0018-6CC0-F978D0F7FD64

treatment provided by

Plazi

scientific name

Branchinella affinis
status

 

B. affinis Linder, 1941  

( Fig. 1 View FIGURE 1 A, B)

B. affinis Linder, 1941   , pp 257 – 61, fig. 36; Geddes, 1981, p. 271–272, Fig. 10 View FIGURE 10 ; Timms, 2002, p 73, Fig. 2 View FIGURE 2 . B. affinis   var. wonganensis Linder, 1941   , p. 261, fig. 39 d.

B. clandestina Timms, 2005   , p. 441–444, Figs.1 View FIGURE 1 , 2 View FIGURE 2 A. New Combination

Material. New South Wales, stock dam 19.5 km SE of Wilcannia, 31 o 43 ’ 05”S, 143 o 27 ’ 50 ”E, 20 January 2007, BVT, AM P 88357 View Materials ; Queensland, 58 km NW of Hungerford on Hungerford-Thargomindah Rd, claypan, 28 o 50 ’ 23 ”S, 143 o 53 ’ 46 ”E, 26 February 2011, BVT, AM P 88358 View Materials ; Queensland, 84 km S of Thargomindah on Hungerford-Thargomindah Rd, floodout of a stock dam, 28 o 39 ’ 47 ”S, 143 o 48 ’ 41 ”E, 26 February, 2011, BVT, AM P 88364 View Materials ; Queensland, 36 km N of Thagomindah on Thargomindah-Quilpie Rd, ‘Yapunyah pool,’ 27 o 49 ’ 10 ”S, 144 o 09’ 26 ”E, 28 February, 2011, BVT, AM P 88359 View Materials ; Northern Territory, Alice Springs, Ilparpa claypan, 23 o 45 ’ 14 ”S, 133 o 47 ’ 52 ”E, 22 Januray 2010, Jochem van der Reijden, AM P 88363 View Materials ; Northern Territory, Horseshoe Bend Station on the Finke River, a claypan, ca 25 o 13 ’S, 134 o 15 ’E, 26 April 2004, Magdalena Zofkova. AM P 88360 View Materials ; South Australia, 40 km N of Marla on Stuart Highway, a claypan, 26 o 59 ’ 50 ”S, 133 o 24 ’ 58 ”E, 10 March 2011, BVT, AM P 88361 View Materials ; South Australia, ca 23 km E of Oodnadatta Track at Algebuckina Crossing of the Neales, Gidgee Ck, 27 o 57 ’ 10 ”S, 136 o 03’ 30 ”E, 2 April 2001, Peter Hudson, SAM C 7035; South Australia, 18 km N of William Creek on Oodnadatta Track, a claypan, 28 o 51 ’ 30, 136 o 09’ 49 ”E, 12 March 2011, BVT, AM P 88362 View Materials .

Remarks. Branchinella affinis   occurs across Australia ( Timms, 2004) and is one of the more variable Branchinella   species ( Geddes, 1981). This variability is partly documented by Geddes (1981) to which must now be added the slightly different form of B. clandestina   . In a molecular analysis of the 16 SmtDNA region, Pinceel et al. (2012) found the genetic difference between B. clandestina   and B. affinis   to be only 1.8 %, far less than a difference> 4 % that Adamowicz & Purvis (2005) and Adamowicz et al. (2009) claim to differentiate species for rDNA coding genes. The diagnostic features of B. clandestina   , namely the unusually narrow frontal appendage, its branching at about 5 / 6 ths the length, limited sensory papillae on the frontal appendage branches, and the curving in three planes of the basal segment of the second antennae ( Timms, 2005) should now be considered as further variations in morphology of B. affinis   . The egg is not different ( Fig. 1 View FIGURE 1 B), but then eggs of B. affinis   are not distinctive (Timms and Lindsay, 2011). All of these variations have been seen in recent years in various degrees in specimens from many sites across Australia, including those listed in the materials from areas not previously collected. For instance, the two specimens from near Wilcannia, New South Wales, have claspers shaped like those in the B. clandestina   , but otherwise would be considered B. affinis   sensu stricto. So, B. clandestina   is regarded as a junior synonym of B. affinis   . Further work, especially using molecular techniques, is needed to understand variation within this taxon. The description of B. erosa   sp. nov. below is the first attempt at this.

SAM

South African Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Branchiopoda

Order

Anostraca

Family

Thamnocephalidae

Genus

Branchinella

Loc

Branchinella affinis

Timms, Brian V 2012
2012
Loc

B. clandestina

Timms 2005
2005
Loc

B. affinis

Linder 1941
1941
Loc

var. wonganensis

Linder 1941
1941