dhIs59 [Topo::daf-9::GFP + lin-15(+)]. Perinuclear expression in a ventral pair of bilateral neurons identified as the IL1Vs or URAVs in the anterior ganglia. By mid-L2, expression in the cytoplasm of the hypodermis, the syncitial epidermis, but absent from midline, epidermal seam cells. Levels peak around the L2 molt and diminish during L4. In some cases, transient expression seen in the L3 vulval blast cells. Also expressed within the hermaphrodite spermatheca starting in late L4 larvae and continuing eve in old adults. In males, expression in IL1V/URAVs and hypodermis but not somatic gonad. In dauer larvae, strong expression in IL1V/URAV and specifically extends into axonal but not dendritic processes. In post-dauer stages, expression in a pattern similar to reproductively growing animals, except expression is absent in the hypodermis. Grow at 20C. May still contain lin-15(n765) mutation in the background.

asEx83 [spe-19(+) + myo-3p::GFP]. Pick GFP+ to maintain. asEx83 contains 7.3kb genomic fragment including spe-19 (Y113G7A.10) and 850bp of upstream sequence. Transgene rescues spe-19(eb52) sperm activation defect. GFP+ hermaphrodites are fertile. non-GFP hermaphrodites are sterile. All males are fertile.

Him. Temperature-sensitive sterile. Small brood size even at permissive temperatures; pick fertile animals and maintain at 15C. Worms lacking spe-45 function produce morphologically normal and motile sperm that cannot fuse with oocytes despite direct contact in the reproductive tract. spe-45 hermaphrodites and males are subfertile at 16C and sterile at 25C. Reference: Singaravelu G, et al. Current Biology 2015. http://dx.doi.org/10.1016/j.cub.2015.10.055

asEx95 [T22B11.1(genomic) + myo-3p::GFP]. Pick GFP+ animals to maintain. as39 is a non-conditional allele of spe-51. Mutant hermaphrodites and males are severely subfertile due to a sperm defect. The extrachromosomal array asEx95 effectively rescues the fertility defect. Him. Reference: Mei X, et al. Curr Biol. 2023 Jul 3;S0960-9822(23)00780-7. doi: 10.1016/j.cub.2023.06.029. PMID: 37453427.

aeaIs8 [ift-20p::GCaMP6s::3xNLS + lin-15(+)]. hpIs728 [gpc-1p::wCherry + lin-15(+)]. Unc. Nuclear-localized GCaMP6s expressed in ciliated sensory neurons. Cytoplasmic wCherry expression in a subset of neurons. Derived by crossing EG9631 (unc-13) hermaphrodites with ZM10104 (aeaIs8; hpIs728) heterozygous males. Reference: Lin A, et al. bioRxiv 2022.05.27.493772; doi: https://doi.org/10.1101/2022.05.27.493772.

Heterozygotes are WT and segregate WT, DpyUnc, dead eggs and Lon males. Maintain by picking WT.

Panagrolaimus rigidus (Schneider, 1886). Males and females. Animals are long.

Isolated in Towers Hill State Park in WI. Males are rare. No SDS resistant dauers. Animals are osmosensitive, can be dried competely and recover in water. Rhabditidae. Previously known as Rhabditis sp.

Isolated in Pennsylvania. SDS resistant dauers. Males are rare.

Isolated in Pennsylvania. Males are rare.

Isolated at Niagara Falls in Canada. SDS resistant dauers look like C. elegans predauers. Males are rare.

nIs190 [myo-2::GFP]. Him. Heterozygotes are wild-type GFP+ and segregate WT GFP+ heterozygotes, Rol Uncs, dead embryos, and males. nIs190 [myo-2::GFP] integrated in or near mnC1. Approx 0.5% recombination seen between nIs190 and mnC1. Fails to complemement all markers on mnC1.

adeIs1 [mex-5::spd-1::GFP + unc-119(+)] II. The transgene has been inserted on chromosome II, using the MosSCI technique. This strains expresses the SPD-1 protein fused to GFP in the germline (both males and females) and in embryos. SPD-1 is nucleolar in interphase and labels the central spindle in mitosis and meiosis, later accumulating at the midbody. Reference: Nahaboo W, et al. Mol Biol Cell. 2015 Jun 1;26(11):2020-9. doi: 10.1091/mbc.E14-12-1577.

Temperature sensitive. Maintain by mating males & females at 15C. fog-2(q71) is male-female.

Heterozygotes are Unc and segregate Uncs (heterozygotes), non-Unc spo-11 homozygotes, and dead eggs (nT1 homozygotes). spo-11 homozygotes produce an average of ~200 fertilized eggs but only about 0.1 progeny survive to adulthood. When mated to N2 males, spo-11 homozygotes will produce at least 5-10 cross progeny.

Heterozygotes are fertile Rollers and segregate fertile non-Rollers (heterozygote), Unc Rollers (unc-51 homozygotes), and non-Unc Rollers that give 96-97% dead eggs (a high % of the survivors are males).

Balanced heterozygotes are GFP+ Unc and segregate GFP+ Unc (heterozygotes), non-GFP non-Unc spo-11(me44) homozygotes, and dead eggs (nT1 homozygotes). spo-11(me44) homozygotes are viable and produce more than 90% dead eggs (a large fraction of the survivors are males — strong Him phenotype); cytologically they lack chiasmata in diakinesis-stage oocytes and lack RAD-51 foci. Maintain by picking Unc.

Balanced heterozygotes are GFP+ Unc and segregate GFP+ Unc (heterozygotes), non-GFP non-Unc him-3(me80) homozygotes, and dead eggs (nT1 homozygotes). him-3(me80) homozygotes are viable and non-Unc. They produce more than 85% dead eggs and a large fraction (11%) of the survivors are males (Him phenotype). Cytologically they exhibit a reduced level of HIM-3 loading and fewer stretches of SYP-1 than WT. In diakinesis-stage oocytes, they contain a mixture of bivalents and univalents. Maintain by picking Unc.

Balanced heterozygotes are Unc and segregate Unc (heterozygotes), non-Unc syp-2(ok307) homozygotes, and dead eggs (nT1 homozygotes). syp-2(ok307) homozygotes are viable and non-Unc. They produce 96% dead eggs and 44% males; cytologically they lack chiasmata in diakinesis-stage oocytes, exhibit persistent polarized nuclear organization during earlier meiotic prophase, lack synaptonemal complexes, and exhibit unstable pairing of homologous chromosomes.

Sperm activation in virgin males. Poor sperm transfer.

Balanced heterozygotes are GFP+ Unc and segregate GFP+ Unc (heterozygotes), non-GFP non-Unc syp-1(me17) homozygotes, and dead eggs (nT1 homozygotes). syp-1(me17) homozygotes produce 95% dead embryos and 38% males. Cytologically they lack chiasmata in diakinesis-stage oocytes, exhibit persistent polarized nuclear organization during earlier meiotic prophase, lack synaptonemal complexes, and exhibit unstable pairing of homologous chromosomes. qIs50 is an insertion of ccEx9747 with markers: myo-2::GFP expressed brightly in the pharynx throughout development, pes-10::GFP expressed in embryos, and a gut promoter (F22B7.9) driving GFP in the intestine.

Heterozygotes are wild-type and segregate wild-type heterozygotes, DpyUncs (mnC1 homozygotes), and him-14 homozygotes that produce >95% dead embryos and 45% males. Among these surviving progeny, cytologically they have 12 univalents in diakinesis-stage oocytes owing to a failure to form crossovers during meiosis.

Sperm activation in virgin males. Very poor sperm transfer.

Age-dependent defect in meiotic double-strand break formation. Homozygous mutants produce elevated frequency of males and dead embryos resulting from defects in meiotic chromosome segregation. The frequency of both males and dead embryos increases in later broods. Reference: Rosu S, et al. PLoS Genet. 2013;9(8):e1003674.

Non-conditional hermaphrodite sterile. Males fertile. Self-progeny produced after mating.

Self-sterile hermaphrodites; fertile males. Mated hermaphrodites produce self and outcross progeny. Self progeny are 33% males.

Temperature sensitive. Maintain at 15C. Throws males.

Fertile at 16c and 20C. Sterile at 25C-Produces some defective embryos and 0-5 progeny. Throws males.

Temperature sensitive. Maintain at 15C. Produces about 30% males.

Temperature sensitive, maintain at 16C. Segregates males. Average progeny at 16C is 7 +/- 5. Average progeny at 25C is 0.1 +/- .1.

Maintain by mating. Hermaphrodites produce nonfunctional sperm and are fertilization defective. Self-fertility is <1% at 16C or 25C. Males are fertile.

Male-hermaphrodite mating strain. Males are fertile, hermaphrodites are sterile.

Male-hermaphrodite mating strain. Males are fertile, hermaphrodites are sterile.

Temperature-sensitive. Maintain at 15C. Fertile at 15C. Partially fertile at 20C. Sterile at 25C. Spermatogenesis arrests at the spermatocyte stage. Increase lifespan in males and hermaphrodites.

Male-hermaphrodite mating strain. Males are fertile, hermaphrodites are sterile.

Male/hermaphrodite mating strain. Hermaphrodites self-sterile at all temps, males fertile. Spermatids activate "normally" in TEA. In pronase they produce spikes but never form pseudopods. Similar to spe-12 and spe-8.

Temperature sensitive Dpy. Male/hermaphrodite mating strain. Hermaphrodites self-sterile at all temps; males fertile. Spermatids arrest with spikes in pronase; form normal pseudopods in TEA.

Male/hermaphrodite mating strain. Hermaphrodites self-sterile at all temps; males fertile.

Homozygous male/hermaphrodite line. Males are fertile. Hermaphrodites are sterile, but slightly leaky producing a few progeny (at 25C - ts not tested). In pronase, spermatids from males activate to form many long spikes, terminating at this stage. A very few (1-3 per worm) activate to form normal-looking, motile spermatozoons.

Hermaphrodites are sterile; Males are fertile. Hermaphrodites lay oocytes (produce a few fertile eggs and many oocytes). Produce viable progeny when mated to males. Hermaphrodites produce 10X more self progeny at 20C (2.5/herm) than at either 16C or 25C.

Temperature sensitive spe-27 allele. Hermaphrodites are sterile at 25C but produce 30-40 progeny/hermaphrodite at 16C. Males are fertile.

Temperature sensitive spe-27 allele. Hermaphrodites sterile at 25C; hermaphrodites produce 30-40 progeny/hermaphrodite at 16C. Males cannot mate due to the unc-22 mutation. Maintain at 15C.

Temperature sensitive spe-27 allele. Leaky sterile at 20C. Males at 20C produce spermatids that form spikes in pronase. Males are fertile. Temperature sensitive dpy-20 allele. Maintain at 15C.

spe-6(hc163) suppresses the ts self-sterile phenotype of spe-27(it132). Also suppresses spe-8, spe-12, and spe-29. Causes precocious spermatid activation. Lays eggs and oocytes. Males are weakly fertile. Fertile between 15-25C.

Heterozygotes are WT and segregate WT, Unc-36 and dead eggs. Maintain by picking WT. Original isolation: BO strain BC1261 unc-22(s727) hermaphrodite heat shocked for 1 hour at 34C. Crossed to N2 strain BC1270 unc-22(s7) unc-31(e169)/nT1 IV; +/nT1 V. Picked individual WT hermaphrodites. Screened for the absence of gravid Unc-22. Retained strain as BC1379. Balanced over eT1: BC1379 unc-22(s727)[BO]/nT1[N2] IV; sDf31[BO]/nT1[N2] hermaphrodite crossed to BC 1265 dpy-18(e364)/eT1 III; unc-46(e177)/eT1 V. Pick WT hermaphrodites that twitch in 1% nicotine. Retained one strain that segregated Unc-36 as BC1428. Pseudolinked sDf31 to dpy-18: BC1428 +/eT1 III; sDf31[BO]/eT1 V crossed to BC 1265 dpy-18/eT1 III; unc-46/eT1 V male. Picked WT hermaphrodite F1. From strains segregating Unc-36 but no Dpy or Unc-46 or DpyUnc-46, cross WT hermaphrodites to BC1265 males. From strains producing Dpy, crossed individual WT males to BC70 eT1;eT1. From each cross, crossed WT X WT. Kept one strain producing on Dpy or DpyUncs as S-H716 male. Picked one hermaphrodite to start BC1519. Comments: 1) The LGV region balanced by eT1 should be all BO. 2) Probably the rest of the genome still has a considerable amount from BO since it was crossed to N2 only 4 times. This strain was generated by the Genetic Toolkit project, which should be acknowledged in any publications resulting from its use: The Genetic Toolkit is funded by the NIH National Center for Research Resources (NCRR) (USA) to Ann M. Rose, David L. Baillie, and Donald L. Riddle. Report all experimental results to David Baillie.

Animals with the duplication are WT. Animals which have lost the duplication are DpyUnc. Segregates 2% males. The males are sterile. The duplication is homozygous lethal.

GFP knocked into C terminal of vit-2 gene by CRISPR/Cas9 using self-excising drug selection cassette method of Dickinson et al. (2015, Genetics). Strain is derived from BCN9070, which was outcrossed to remove a linked background mutation on LG X causing transgenic males to mate poorly. Reference: Perez MF, et al. Nature. 2017 Dec 7;552(7683):106-109.

As homozygote suppresses blister formation in bli-1(sc73), bli-2(sc768) and bli-6(sc16). WT phenotype. Males sometimes have small blisters above their bursas. Males mate well. See wbg9.1p51.

bqSi577 [myo-2p::GFP + unc-119(+)] IV. Germline granules defective, ~30% sterility. Males fail to be attracted by hermaphrodite-secreted volatile sex pheromones. Express GFP in pharyngeal muscles. Reference: Toker IA, et al. Dev Cell. 2022 Feb 7;57(3):298-309.e9. PMID: 35134343

Animals which carry ctDp6 are WT. Animals which have lost ctDp6 are DpyUnc Males. Maintain by picking WT.